EEVblog https://www.eevblog.com No Script, No Fear, All Opinion Mon, 28 Sep 2026 04:33:48 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.9 https://www.eevblog.com/wp-content/uploads/2018/05/cropped-Logo512x512-32x32.png EEVblog https://www.eevblog.com 32 32 David L. Jones no episodic (c)2011 David L. Jones Copyright © David L. Jones 2013 podcast EEVblog https://eevblog.com/images/logo/EEVblogDaveLab250x250logo.jpg https://www.eevblog.com 7306500 podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematicAn off-the-cuff Electronics Engineering video blog for enthusiasts and engineers.EEVblogdavid@alternatezone.comDavid L. Jones EEVblog 1775 – Get paid $175 Get paid $175/hr to eliminate your own PCB Design job! Mailbag https://www.eevblog.com/2026/09/28/eevblog-1776-get-paid-175-hr-to-eliminate-your-own-pcb-design-job/ Mon, 28 Sep 2026 04:33:48 +0000 https://www.eevblog.com/?p=76435 Get paid $175/hr to train AI how to use Altium Designer so it can replace your own job as a PCB designer!
https://jobs.micro1.ai/post/cca1a8fa-3a37-4485-91f0-99d1fe2b95bc
https://openai.com/index/gpt-6-astra/

Forum: https://www.eevblog.com/forum/blog/eevblog-1776-$175hr-to-teach-ai-how-to-automate-altium-pcb-design/

]]> 76435 david@alternatezone.com (David L. Jones) EEVblog 1775 – Get paid $175/hr to eliminate your own PCB Design job! Mailbag https://www.eevblog.com/2026/09/28/eevblog-1775-mailbag/ Mon, 28 Sep 2026 04:31:14 +0000 https://www.eevblog.com/?p=76429 More Mailbag!

00:00 – DrPD UBC-C Open Source PD Protocol Analyser
https://www.crowdsupply.com/t76-org/dr-pd
https://t76.org/drpd/docs/
https://github.com/T76-org/drpd/tree/main

24:34 – Sabrent USB-C and USB-A 8 power 252W Charger
https://link.amazon/B03E4bswK

35:03 – The Audio Circuits Cookbook: Building Blocks and Tools to Design Professional Audio Devices
https://link.amazon/B0auUWq4f

Forum: https://www.eevblog.com/forum/blog/eevblog-1775-mailbag/

]]> 76429 david@alternatezone.com (David L. Jones) EEVblog 1774 – PayPal Here Part 2 – Security Boogaloo https://www.eevblog.com/2026/09/28/eevblog-1774-paypal-here-part-2-security-boogaloo/ Mon, 28 Sep 2026 04:29:08 +0000 https://www.eevblog.com/?p=76423 Part 2 of the PayPal Here teardown, because everyone wanted to know what was under the anti-tamper security mesh, so lets take a look.

Datasheet: https://www.nxp.com/docs/en/data-sheet/IMX25CEC.pdf

00:00 – We return to the PayPal Here POS terminal teardown
04:11 – They want to stop Skimming hacks, it’s not just the keys
07:39 – Removing the keypad security mesh + a SURPRISE!
11:31 – On-die physical security
12:09 – Removing the card reader security anti-tamper mesh
13:36 – Speculating on hacking this POS terminal

Forum: https://www.eevblog.com/forum/blog/eevblog-1773-paypal-here-pos-terminal-teardown/

]]> full 17:20 76423 david@alternatezone.com (David L. Jones)noPart 2 of the PayPal Here teardown, because everyone wanted to know what was under the anti-tamper security mesh, so lets take a look. Datasheet: https://www.nxp.com/docs/en/data-sheet/IMX25CEC.pdf 00:00 – We return to the PayPal Here POS terminal teardown 04:11 – They want to stop Skimming hacks, it’s not just the keys 07:39 – Removing the keypad …David L. JonesPart 2 of the PayPal Here teardown, because everyone wanted to know what was under the anti-tamper security mesh, so lets take a look. Datasheet: https://www.nxp.com/docs/en/data-sheet/IMX25CEC.pdf 00:00 – We return to the PayPal Here POS terminal teardown 04:11 – They want to stop Skimming hacks, it’s not just the keys 07:39 – Removing the keypad …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1773 – PayPal Here POS Terminal TEARDOWN https://www.eevblog.com/2026/09/28/eevblog-1773-paypal-here-pos-terminal-teardown/ Mon, 28 Sep 2026 04:26:51 +0000 https://www.eevblog.com/?p=76417 Teardown of the now obsoleted PayPal Here POS Payment terminal.

00:00 – PayPal Here POS payment terminal
03:56 – Teardown
05:10 – Case security clips
06:31 – Battery
08:02 – Security tamper mesh
10:43 – POS Terminal companies and my job at KeyCorp
12:14 – Bye Bye secure keys
14:24 – Battery removal
16:29 – i.MX258 Secure ARM processor

Links:
https://www.nxp.com/docs/en/data-sheet/IMX25CEC.pdf
https://listings.pcisecuritystandards.org/documents/pci_pts_poi_sr.pdf

Forum: https://www.eevblog.com/forum/blog/eevblog-1773-paypal-here-pos-terminal-teardown/

]]> full 76417 david@alternatezone.com (David L. Jones)noTeardown of the now obsoleted PayPal Here POS Payment terminal. 00:00 – PayPal Here POS payment terminal 03:56 – Teardown 05:10 – Case security clips 06:31 – Battery 08:02 – Security tamper mesh 10:43 – POS Terminal companies and my job at KeyCorp 12:14 – Bye Bye secure keys 14:24 – Battery removal 16:29 – …David L. JonesTeardown of the now obsoleted PayPal Here POS Payment terminal. 00:00 – PayPal Here POS payment terminal 03:56 – Teardown 05:10 – Case security clips 06:31 – Battery 08:02 – Security tamper mesh 10:43 – POS Terminal companies and my job at KeyCorp 12:14 – Bye Bye secure keys 14:24 – Battery removal 16:29 – …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1772 – OpAmp Exam Question 2: Complex Electric Boogaloo https://www.eevblog.com/2026/09/15/eevblog-1772-opamp-exam-question-2-complex-electric-boogaloo/ Tue, 15 Sep 2026 00:26:33 +0000 https://www.eevblog.com/?p=76410 A follow-up to the previous video showing the complex AC impedance answer to the OpAmp exam question.

Part 1: https://www.youtube.com/watch?v=nDEGqme5Z4g

https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/

OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf

]]> full 76410 david@alternatezone.com (David L. Jones)noA follow-up to the previous video showing the complex AC impedance answer to the OpAmp exam question. Part 1: https://www.youtube.com/watch?v=nDEGqme5Z4g https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/ OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1LfDavid L. JonesA follow-up to the previous video showing the complex AC impedance answer to the OpAmp exam question. Part 1: https://www.youtube.com/watch?v=nDEGqme5Z4g https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/ OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lfpodcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1771 – A Tricky OpAmp Exam Question https://www.eevblog.com/2026/09/15/eevblog-1771-a-tricky-opamp-exam-question/ Tue, 15 Sep 2026 00:22:20 +0000 https://www.eevblog.com/?p=76404 Dave answers an exam question on OpAmps that’s interestingly tricky. Bonus opamp tutorial on biasing.

Part 2: https://www.youtube.com/watch?v=33rS0oLULqw

https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/

OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf

00:00 – A tricky exam question
01:45 – What’s missing?
03:11 – The two most important Opamp rules
04:44 – THINK about what sort of exam you are in BEFORE answering the question
07:04 – Capacitive reactance “AC resistance”
08:53 – They want you to use frequency, but also IGNORE it? How does that work?
10:21 – When it doubt, assume a short circuit
10:59 – Solving the first part of the question
12:20 – The 2nd rule of AC circuit analysis
13:33 – Solving the second part of the question, what is the AC gain?
15:29 – There is no need to muck around, move on to the next question
15:58 – Let’s talk about Opamp Biasing
22:59 – Single pole high pass filter
23:31 – Ripple removal filter
26:24 – Conclusion, why is this question is clever?

]]> full 76404 david@alternatezone.com (David L. Jones)noDave answers an exam question on OpAmps that’s interestingly tricky. Bonus opamp tutorial on biasing. Part 2: https://www.youtube.com/watch?v=33rS0oLULqw https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/ OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf 00:00 – A tricky exam question 01:45 – What’s missing? 03:11 – The two most important Opamp rules 04:44 – THINK about what sort of exam you are in BEFORE answering the question …David L. JonesDave answers an exam question on OpAmps that’s interestingly tricky. Bonus opamp tutorial on biasing. Part 2: https://www.youtube.com/watch?v=33rS0oLULqw https://www.eevblog.com/forum/beginners/how-to-analyze-the-opamp-circuit/ OpAmp playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHu2FviAaZaiyXwN41G4b1Lf 00:00 – A tricky exam question 01:45 – What’s missing? 03:11 – The two most important Opamp rules 04:44 – THINK about what sort of exam you are in BEFORE answering the question …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1770 – Rigol RSA800 Real Time Spectrum Analyser TEARDOWN + Reverse Engineering https://www.eevblog.com/2026/09/08/eevblog-1770-rigol-rsa800-real-time-spectrum-analyser-teardown-reverse-engineering/ Tue, 08 Sep 2026 01:21:59 +0000 https://www.eevblog.com/?p=76396 Teardown and reverse engineering of the new Rigol RSA800 series Real Time Spectrum Analyser, from 4.5GHz to 13GHz.
4.5GHz RSA804
8.5GHz RSA808
14GHz RSA814
https://www.rigolna.com/products/spectrum-analyzers/rsa800/

00:00 – Rigol’s new RSA800 Real Time Spectrum Analyser
06:48 – Teardown
11:42 – RF front end box teardown. Mad Man Muntz
14:55 – Back side of the RF block
16:50 – Reverse Engineering with DaveCAD
22:05 – Attenuator & Preamplifier
23:41 – Interesting split into separate HF and LF mixers
25:47 – Preselect filters
27:33 – Flux residue!
28:23 – HF and LF Mixers and 1st stage PLL
30:58 – Downconversion mixing explained
32:48 – 2nd Stage Active IF Mixer, now we are getting serious
36:01 – Final 3rd stage active mixer
36:57 – Dave is WRONG, but why you might want two ADC’s vs one
39:20 – No Dave, it’s a DAC
40:25 – Speculating on the custom ADC used, and digital quadrature sampling
41:49 – Mystery LTC part, and what on earth is going on here with these PCB couplers?
44:32 – Teardown Conclusion
45:51 – Demo comparison of a DSA815 and RSA808, Real Time vs Swept Analysis

Forum: https://www.eevblog.com/forum/testgear/new-rigol-rsa800-spectrum-analyser/

Hi-Res Photos:
Rigol RSA800 Spectrum Analyser Teardown

Datasheets:
SIS378 Switch: https://www.sicoresemi.com/ueditor/php/upload/file/20250818/1755497980219246.pdf
SIAT116 Attenuator: https://www.sicoresemi.com/ueditor/php/upload/file/20260427/1777277733715489.pdf
LF Mixer : https://www.sicoresemi.com/ueditor/php/upload/file/20250923/1758612877124723.pdf
SIM445 HF Mixer: https://www.sicoresemi.com/ueditor/php/upload/file/20260709/1783577453983448.pdf
SIA070 Amplifier: https://www.sicoresemi.com/ueditor/php/upload/file/20260509/1778310579506957.pdf
SIS119 Absorptive Switch: https://www.sicoresemi.com/ueditor/php/upload/file/20250324/1742806808125089.pdf
SIP052 Phase Converter: https://www.sicoresemi.com/ueditor/php/upload/file/20240627/1719477861130248.pdf
SIA332 Amplifier: https://www.sicoresemi.com/ueditor/php/upload/file/20240924/1727159790115927.pdf
LMX2820 PLL: https://www.ti.com/lit/ds/symlink/lmx2820.pdf
LTC5577 Active Mixer: https://www.analog.com/media/en/technical-documentation/data-sheets/5577f.pdf

]]> full 76396 david@alternatezone.com (David L. Jones)noTeardown and reverse engineering of the new Rigol RSA800 series Real Time Spectrum Analyser, from 4.5GHz to 13GHz. 4.5GHz RSA804 8.5GHz RSA808 14GHz RSA814 https://www.rigolna.com/products/spectrum-analyzers/rsa800/ 00:00 – Rigol’s new RSA800 Real Time Spectrum Analyser 06:48 – Teardown 11:42 – RF front end box teardown. Mad Man Muntz 14:55 – Back side of the RF block …David L. JonesTeardown and reverse engineering of the new Rigol RSA800 series Real Time Spectrum Analyser, from 4.5GHz to 13GHz. 4.5GHz RSA804 8.5GHz RSA808 14GHz RSA814 https://www.rigolna.com/products/spectrum-analyzers/rsa800/ 00:00 – Rigol’s new RSA800 Real Time Spectrum Analyser 06:48 – Teardown 11:42 – RF front end box teardown. Mad Man Muntz 14:55 – Back side of the RF block …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1769 – Who Needs Three Phases? REPAIR https://www.eevblog.com/2026/09/08/eevblog-1769-who-needs-three-phases-repair/ Tue, 08 Sep 2026 01:17:33 +0000 https://www.eevblog.com/?p=76390 Can you repair a PSU by REMOVING a component? Well, in this case, yeah, kinda.
Not recommended for new designs, but it works (for now) because the design margins allowed it.

00:00 – My NerdQaxe++ Bitcoin miner has failed. Guru Meditation!
02:13 – Bitmain 1370 chipset thermal paste
03:54 – The flipchip die under the microscope
04:48 – Thermal paste application triggering
06:55 – Time for a new strategy R2. The Vreg temp sensor is now the suspect
07:53 – A look at the open source hardware schematic in KiCAD
https://github.com/shufps/qaxe
09:42 – The TPS53647 4 Phase ASIC Buck PSU controller
https://www.ti.com/lit/ds/symlink/tps53647.pdf
10:23 – The CSD95472Q5MC Synchronous Buck NexFET Smart Power Stage
https://www.ti.com/lit/ds/symlink/csd95472q5mc.pdf
11:50 – We can try wacking a heatsink on + Jaycar field trip
12:41 – Did that fix it?
14:10 – It’s becoming obvious what the fault is now
16:24 – Thermal camera testing
16:56 – Oscilloscope time on the 3 phase PSU
18:21 – Desoldering time, maybe
19:42 – Will removing this component work?
23:52 – AutoBalance multi-phase buck conversion for the win

Forum: https://www.eevblog.com/forum/blog/eevblog-1769-repair-by-removing-a-component/

]]> full 76390 david@alternatezone.com (David L. Jones)noCan you repair a PSU by REMOVING a component? Well, in this case, yeah, kinda. Not recommended for new designs, but it works (for now) because the design margins allowed it. 00:00 – My NerdQaxe++ Bitcoin miner has failed. Guru Meditation! 02:13 – Bitmain 1370 chipset thermal paste 03:54 – The flipchip die under the …David L. JonesCan you repair a PSU by REMOVING a component? Well, in this case, yeah, kinda. Not recommended for new designs, but it works (for now) because the design margins allowed it. 00:00 – My NerdQaxe++ Bitcoin miner has failed. Guru Meditation! 02:13 – Bitmain 1370 chipset thermal paste 03:54 – The flipchip die under the …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1768 – Mailbag https://www.eevblog.com/2026/08/28/eevblog-1768-mailbag/ Fri, 28 Aug 2026 09:06:45 +0000 https://www.eevblog.com/?p=76380 More Mailbag!

00:00 – Dave & Dylan open random Mailbag
03:49 – DIY bodged laser engraver
04:14 – MPPT Solar charge controller
04:56 – Mixed bags
06:01 – DLP Projector Mirror Arrays
08:05 – TDA2030A Power Amp
08:39 – Analog/Digital combo watch
12:23 – Solar Panels
13:52 – Engineering Spelling + 34401A VFD Replacement
https://hubequip.net/products/hp-agilent-34401a-vfd-to-led-display-replacement-led-conversion
17:58 – Treedix USB Cable Tester
https://treedix.com/
24:33 – Zoyi ZT-XC1 Combo LCR & Multimeter
https://s.click.aliexpress.com/e/_c4kzCJV5

Forum: https://www.eevblog.com/forum/blog/eevblog-1768-mailbag/

]]> full 76380 david@alternatezone.com (David L. Jones)noMore Mailbag! 00:00 – Dave & Dylan open random Mailbag 03:49 – DIY bodged laser engraver 04:14 – MPPT Solar charge controller 04:56 – Mixed bags 06:01 – DLP Projector Mirror Arrays 08:05 – TDA2030A Power Amp 08:39 – Analog/Digital combo watch 12:23 – Solar Panels 13:52 – Engineering Spelling + 34401A VFD Replacement https://hubequip.net/products/hp-agilent-34401a-vfd-to-led-display-replacement-led-conversion …David L. JonesMore Mailbag! 00:00 – Dave & Dylan open random Mailbag 03:49 – DIY bodged laser engraver 04:14 – MPPT Solar charge controller 04:56 – Mixed bags 06:01 – DLP Projector Mirror Arrays 08:05 – TDA2030A Power Amp 08:39 – Analog/Digital combo watch 12:23 – Solar Panels 13:52 – Engineering Spelling + 34401A VFD Replacement https://hubequip.net/products/hp-agilent-34401a-vfd-to-led-display-replacement-led-conversion …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1767 – Harogic PXN-90 9GHz Spectrum Analyser TEARDOWN https://www.eevblog.com/2026/08/20/eevblog-1767-harogic-pxn-90-9ghz-spectrum-analyser-teardown/ Thu, 20 Aug 2026 05:08:39 +0000 https://www.eevblog.com/?p=76368 Teardown and detailed analysis of the Harogic PXN-90 9GHz Spectrum Analyser.
https://www.harogic.com/product/harogic-px-series-standard-spectrum-analyzer-receiver/

Forum: https://www.eevblog.com/forum/blog/eevblog-1767-harogic-pxn-90-9ghz-spectrum-analyser-teardown/

Harogic PXN-90 Spectrum Analyzer

]]> full 76368 david@alternatezone.com (David L. Jones)noTeardown and detailed analysis of the Harogic PXN-90 9GHz Spectrum Analyser. https://www.harogic.com/product/harogic-px-series-standard-spectrum-analyzer-receiver/ Forum: https://www.eevblog.com/forum/blog/eevblog-1767-harogic-pxn-90-9ghz-spectrum-analyser-teardown/David L. JonesTeardown and detailed analysis of the Harogic PXN-90 9GHz Spectrum Analyser. https://www.harogic.com/product/harogic-px-series-standard-spectrum-analyzer-receiver/ Forum: https://www.eevblog.com/forum/blog/eevblog-1767-harogic-pxn-90-9ghz-spectrum-analyser-teardown/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic eevBLAB 143 – HUGE Youtube Change on View Count https://www.eevblog.com/2026/08/20/eevblab-143-huge-youtube-change-on-view-count/ Thu, 20 Aug 2026 05:07:01 +0000 https://www.eevblog.com/?p=76362 Youtube have just completely changed what constitutes a “view” !
And they have doubled the limit on monestisation thresholds.
https://support.google.com/youtube/thread/433409976

]]> 76362 david@alternatezone.com (David L. Jones) EEVblog Now Available on Spotify https://www.eevblog.com/2026/08/20/eevblog-now-available-on-spotify/ Thu, 20 Aug 2026 05:05:26 +0000 https://www.eevblog.com/?p=76356 All the EEVblog videos are now available on Spotify thanks to Dylan vibe coding a bulk upload engine with Claude AI. No API? No problem! Plus some interesting EEVblog stats.
https://open.spotify.com/show/2LsuS1kDu8jbE3GsOxDQrk
One day the Spotify Monetisation might come through.

]]> 76356 david@alternatezone.com (David L. Jones) EEVblog 1766 – FAILED Rode PodMic USB Teardown https://www.eevblog.com/2026/08/20/eevblog-1766-failed-rode-podmic-usb-teardown/ Thu, 20 Aug 2026 05:02:19 +0000 https://www.eevblog.com/?p=76350 Dave’s Rode PodMic USB failed, so might as well do a quick teardown before returning it under warranty.

Forum: https://www.eevblog.com/forum/blog/rode-podmic-usbs-are-failing!/

]]> full 76350 david@alternatezone.com (David L. Jones)noDave’s Rode PodMic USB failed, so might as well do a quick teardown before returning it under warranty. Forum: https://www.eevblog.com/forum/blog/rode-podmic-usbs-are-failing!/David L. JonesDave’s Rode PodMic USB failed, so might as well do a quick teardown before returning it under warranty. Forum: https://www.eevblog.com/forum/blog/rode-podmic-usbs-are-failing!/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1765 – This $19 ESP32 Makes Home Automation EASY https://www.eevblog.com/2026/08/20/eevblog-1765-this-19-esp32-makes-home-automation-easy/ Thu, 20 Aug 2026 05:00:00 +0000 https://www.eevblog.com/?p=76342 Using an Waveshare ESP32 RS485 module on the Brink Flair 400 home air ventilation system to email alert if the inlet pressure goes about 400 pascals. And using Claude AI to generate the Arduino code required.

00:00 – Brink Flair 400 ventilation system
02:04 – Waveshare ESP32-S3-RS485-CAN module
06:32 – Using Claude to generate Arduino code
17:04 – Pirate Mode Activated
24:21 – Installation and testing

]]> full 76342 david@alternatezone.com (David L. Jones)noUsing an Waveshare ESP32 RS485 module on the Brink Flair 400 home air ventilation system to email alert if the inlet pressure goes about 400 pascals. And using Claude AI to generate the Arduino code required. 00:00 – Brink Flair 400 ventilation system 02:04 – Waveshare ESP32-S3-RS485-CAN module 06:32 – Using Claude to generate Arduino …David L. JonesUsing an Waveshare ESP32 RS485 module on the Brink Flair 400 home air ventilation system to email alert if the inlet pressure goes about 400 pascals. And using Claude AI to generate the Arduino code required. 00:00 – Brink Flair 400 ventilation system 02:04 – Waveshare ESP32-S3-RS485-CAN module 06:32 – Using Claude to generate Arduino …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1764 – Can I Retire Now? https://www.eevblog.com/2026/08/06/eevblog-1764-can-i-retire-now/ Thu, 06 Aug 2026 01:36:03 +0000 https://www.eevblog.com/?p=76334 I guess I have 1 million subscribers now.

Forum: https://www.eevblog.com/forum/blog/eevblog-1764-can-i-retire-now/

]]> full 76334 david@alternatezone.com (David L. Jones)noI guess I have 1 million subscribers now. Forum: https://www.eevblog.com/forum/blog/eevblog-1764-can-i-retire-now/David L. JonesI guess I have 1 million subscribers now. Forum: https://www.eevblog.com/forum/blog/eevblog-1764-can-i-retire-now/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1763 – Meet Dylan https://www.eevblog.com/2026/08/03/eevblog-1763-meet-dylan/ Mon, 03 Aug 2026 03:49:04 +0000 https://www.eevblog.com/?p=76328 Meet Dylan

Forum: https://www.eevblog.com/forum/blog/eevblog-1763-meet-dylan/

]]> full 76328 david@alternatezone.com (David L. Jones)noMeet Dylan Forum: https://www.eevblog.com/forum/blog/eevblog-1763-meet-dylan/David L. JonesMeet Dylan Forum: https://www.eevblog.com/forum/blog/eevblog-1763-meet-dylan/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1762 – BIOHAZARD TEARDOWN!: Logitech Keyboard https://www.eevblog.com/2026/08/03/eevblog-1762-biohazard-teardown-logitech-keyboard/ Mon, 03 Aug 2026 03:44:31 +0000 https://www.eevblog.com/?p=76322 What lurks inside Dave’s decade old Logitech keyboard? Gross-out WARNING!

Forum: https://www.eevblog.com/forum/blog/eevblog-1762-logitech-keyboard-vs-food-gross-teardown/

]]> full 76322 david@alternatezone.com (David L. Jones)noWhat lurks inside Dave’s decade old Logitech keyboard? Gross-out WARNING! Forum: https://www.eevblog.com/forum/blog/eevblog-1762-logitech-keyboard-vs-food-gross-teardown/David L. JonesWhat lurks inside Dave’s decade old Logitech keyboard? Gross-out WARNING! Forum: https://www.eevblog.com/forum/blog/eevblog-1762-logitech-keyboard-vs-food-gross-teardown/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1761 – Micsig MHO14 Tablet Oscilloscope TEARDOWN https://www.eevblog.com/2026/07/24/eevblog-1761-micsig-mho14-tablet-oscilloscope-teardown/ Fri, 24 Jul 2026 07:25:50 +0000 https://www.eevblog.com/?p=76314 Teardown of the new Micsig HMO14 4CH 200MHz 6th generation tablet oscilloscope with built in multimeter.
Follow up on the lack of input ptotection! https://www.youtube.com/watch?v=W2o8otvVML4

Forum: https://www.eevblog.com/forum/blog/eevblog-1761-micsig-mho14-tablet-oscilloscope-teardown/

00:00 – Micsig MHO14 12bit 6th generation oscilloscope
05:00 – Rubber baby buggy bumber
08:13 – The RF shield retaining clips
09:32 – The heat sink mounting is GLORIOUS!
11:34 – PCB detailed inspection
16:02 – ADC
19:20 – Front end
22:17 – The Multimeter front end is great, but WEIRD!

]]> full 76314 david@alternatezone.com (David L. Jones)noTeardown of the new Micsig HMO14 4CH 200MHz 6th generation tablet oscilloscope with built in multimeter. Follow up on the lack of input ptotection! https://www.youtube.com/watch?v=W2o8otvVML4 Forum: https://www.eevblog.com/forum/blog/eevblog-1761-micsig-mho14-tablet-oscilloscope-teardown/ 00:00 – Micsig MHO14 12bit 6th generation oscilloscope 05:00 – Rubber baby buggy bumber 08:13 – The RF shield retaining clips 09:32 – The heat sink mounting is …David L. JonesTeardown of the new Micsig HMO14 4CH 200MHz 6th generation tablet oscilloscope with built in multimeter. Follow up on the lack of input ptotection! https://www.youtube.com/watch?v=W2o8otvVML4 Forum: https://www.eevblog.com/forum/blog/eevblog-1761-micsig-mho14-tablet-oscilloscope-teardown/ 00:00 – Micsig MHO14 12bit 6th generation oscilloscope 05:00 – Rubber baby buggy bumber 08:13 – The RF shield retaining clips 09:32 – The heat sink mounting is …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic An Unusual Repair https://www.eevblog.com/2026/07/16/an-unusual-repair/ Thu, 16 Jul 2026 03:53:35 +0000 https://www.eevblog.com/?p=76306 An Unusual Repair of a returned new BM786 multimeter

Forum: https://www.eevblog.com/forum/repair/an-unusual-bm786-repair/

]]> 76306 david@alternatezone.com (David L. Jones) EEVblog 1760 – Today in the Dumpster (July 12th, 2026) https://www.eevblog.com/2026/07/16/eevblog-1760-today-in-the-dumpster-july-12th-2026/ Thu, 16 Jul 2026 03:50:02 +0000 https://www.eevblog.com/?p=76300 Today in the dumpster!

Forum: https://www.eevblog.com/forum/blog/eevblog-1760-today-in-the-dumpster-(july-12th-2026)/

]]> full 76300 david@alternatezone.com (David L. Jones)noToday in the dumpster! Forum: https://www.eevblog.com/forum/blog/eevblog-1760-today-in-the-dumpster-(july-12th-2026)/David L. JonesToday in the dumpster! Forum: https://www.eevblog.com/forum/blog/eevblog-1760-today-in-the-dumpster-(july-12th-2026)/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1759 – ACES Hardware Meetup (Startup Hardware is Hard) https://www.eevblog.com/2026/07/16/eevblog-1759-aces-hardware-meetup-startup-hardware-is-hard/ Thu, 16 Jul 2026 03:48:10 +0000 https://www.eevblog.com/?p=76294 The 10th ACES hardware meetup in Sydney at Engineers Australia. All talks and open mics.
https://luma.com/sydney-114f

00:00 – Engineers Australia HQ
03:19 – Intro
05:42 – Cibby Pulikkaseril from Zabidou
https://www.zabidou.com/
14:42 – Matt Crott from MAKO Aero – Prototype to Product
https://mako.aero/
25:28 – Panel discussion with Cibby, Matt and Brendan Hill from TEN13 Venture Capital
https://www.ten13.vc/
42:28 – Toby Tank from Onset, The Omnia Collective
https://theonset.com.au/
44:52 – An amazing demo of an omnidirectional semi-holographic display, the AndoTrope from Mike Ando!
https://www.riumplus.com/
50:06 – Student Tokamak nuclear reactor
52:31 – Ali and his DIY robot actuators
56:23 – Xtrainr fitness tracker hardware
https://xtrainr.ai/
59:18 – Startup robotics building vision system
1:03:37 – Haptic Virtual Reality Glove from On0
https://on0.com/
1:07:56 – Brian, a Year 12 High School Student doing drone development
1:09:09 – Dropbear AI fast cloud AI models
https://www.dreamscalelabs.com/
1:11:58 – Robocup Junior
https://junior.robocup.org/
1:14:46 – Hot Take: Hardware isn’t hard
1:17:41 – Jim from Taylor Street Creative Space
https://taylorstreet.space/
1:23:01 – Student Robotics
1:26:36 – No Pizza For You!

Forum: https://www.eevblog.com/forum/blog/eevblog-1759-aces-hardware-meetup-(startup-hardware-is-hard)/

]]> full 76294 david@alternatezone.com (David L. Jones)noThe 10th ACES hardware meetup in Sydney at Engineers Australia. All talks and open mics. https://luma.com/sydney-114f 00:00 – Engineers Australia HQ 03:19 – Intro 05:42 – Cibby Pulikkaseril from Zabidou https://www.zabidou.com/ 14:42 – Matt Crott from MAKO Aero – Prototype to Product https://mako.aero/ 25:28 – Panel discussion with Cibby, Matt and Brendan Hill from TEN13 …David L. JonesThe 10th ACES hardware meetup in Sydney at Engineers Australia. All talks and open mics. https://luma.com/sydney-114f 00:00 – Engineers Australia HQ 03:19 – Intro 05:42 – Cibby Pulikkaseril from Zabidou https://www.zabidou.com/ 14:42 – Matt Crott from MAKO Aero – Prototype to Product https://mako.aero/ 25:28 – Panel discussion with Cibby, Matt and Brendan Hill from TEN13 …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1758 – A Greek Dumpster Tragedy https://www.eevblog.com/2026/07/16/eevblog-1758-a-greek-dumpster-tragedy/ Thu, 16 Jul 2026 03:45:07 +0000 https://www.eevblog.com/?p=76288 A Greek Dumpster TV LED Backlight replacement Tragedy

Forum: https://www.eevblog.com/forum/blog/eevblog-1758-a-greek-dumpster-tragedy/

00:00 – Dumpster LG 4K TV backlight phosphor failure
02:34 – LED spectrum measurements
03:48 – Teardown
08:49 – LCD TV layers
09:36 – Come-a-gutsa
11:50 – Through the magic of Ali Express
14:49 – Replacing the LED strips
17:55 – Sagan discovers electric screwdrivers
19:31 – A Greek Tragedy

]]> full 76288 david@alternatezone.com (David L. Jones)noA Greek Dumpster TV LED Backlight replacement Tragedy Forum: https://www.eevblog.com/forum/blog/eevblog-1758-a-greek-dumpster-tragedy/ 00:00 – Dumpster LG 4K TV backlight phosphor failure 02:34 – LED spectrum measurements 03:48 – Teardown 08:49 – LCD TV layers 09:36 – Come-a-gutsa 11:50 – Through the magic of Ali Express 14:49 – Replacing the LED strips 17:55 – Sagan discovers electric screwdrivers …David L. JonesA Greek Dumpster TV LED Backlight replacement Tragedy Forum: https://www.eevblog.com/forum/blog/eevblog-1758-a-greek-dumpster-tragedy/ 00:00 – Dumpster LG 4K TV backlight phosphor failure 02:34 – LED spectrum measurements 03:48 – Teardown 08:49 – LCD TV layers 09:36 – Come-a-gutsa 11:50 – Through the magic of Ali Express 14:49 – Replacing the LED strips 17:55 – Sagan discovers electric screwdrivers …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1757: Sharp GF-7600 Boombox Repair PART 2 Electric Boogaloo https://www.eevblog.com/2026/07/16/eevblog-1757-sharp-gf-7600-boombox-repair-part-2-electric-boogaloo/ Thu, 16 Jul 2026 03:40:17 +0000 https://www.eevblog.com/?p=76282 Sharp GF-7600 Boombox Repair Part 2 Electric Boogaloo
Dismantling, cleaning and fixing the dodgy mains switch contact.

Forum: https://www.eevblog.com/forum/blog/eevblog-1756-57-boombox-bodge-repair/

]]> full 76282 david@alternatezone.com (David L. Jones)noSharp GF-7600 Boombox Repair Part 2 Electric Boogaloo Dismantling, cleaning and fixing the dodgy mains switch contact. Forum: https://www.eevblog.com/forum/blog/eevblog-1756-57-boombox-bodge-repair/David L. JonesSharp GF-7600 Boombox Repair Part 2 Electric Boogaloo Dismantling, cleaning and fixing the dodgy mains switch contact. Forum: https://www.eevblog.com/forum/blog/eevblog-1756-57-boombox-bodge-repair/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1756 – Sharp 1980’s Boombox Bodge Repair https://www.eevblog.com/2026/07/16/eevblog-1756-sharp-1980s-boombox-bodge-repair/ Thu, 16 Jul 2026 03:38:48 +0000 https://www.eevblog.com/?p=76276 Bodge repairing THE boombox of the 1980’s, the Sharp GF-7600 for a 1980’s party.

]]> full 76276 david@alternatezone.com (David L. Jones)noBodge repairing THE boombox of the 1980’s, the Sharp GF-7600 for a 1980’s party.David L. JonesBodge repairing THE boombox of the 1980’s, the Sharp GF-7600 for a 1980’s party.podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1755 – Tolicore Femtoammeter TEARDOWN + REVERSE ENGINEER https://www.eevblog.com/2026/06/24/eevblog-1755-tolicore-femtoammeter-teardown-reverse-engineer/ Wed, 24 Jun 2026 03:28:30 +0000 https://www.eevblog.com/?p=76266 Demo, teardown and reverse engineering of the Tolicore 3720 Femtoammeter and voltage source.
https://tolicore.com/products/3720-femtoammeter-voltage-source/
https://tolicore.com/product-documents/3720-Datasheet.pdf
Keithley low current measurement handbook: https://www.tek.com/en/documents/product-article/keithley-low-level-measurements-handbook—7th-edition
Counting LED photons video: https://www.youtube.com/watch?v=TJcMgoJ4DOE

00:00 – Femtoammeter measurement
01:16 – Tolicore 3720 Femtoammeter unboxing
03:39 – Power on and UI
05:18 – 20pA full scale range
10:13 – Bluetooth and
11:35 – Humidity measurement is important
12:21 – Crazy sensitive!
13:45 – LED as a current source demo
15:28 – 1nA measurement test
16:43 – Burden voltage and electrometer input + self calibration
20:14 – Teardown
22:20 – Voiding the warranty
25:05 – Reverse engineering
27:32 – How a PCB guard ring works
33:52 – Humidity matters
34:33 – The voltage output
35:23 – Porcelain Multilayer Capacitors
36:22 – Voltmeter input
38:24 – Potentiostatic and Amperostatic Coulometry
40:15 – ADA4530-1 Internal schematic
42:25 – Contamination and PCB assembly cleaning matters
44:03 – Rogers PCB material

Forum: https://www.eevblog.com/forum/blog/eevblog-1755-tolicore-femtoammeter-teardown-reverse-engineer/

]]> 76266 david@alternatezone.com (David L. Jones)noDemo, teardown and reverse engineering of the Tolicore 3720 Femtoammeter and voltage source. https://tolicore.com/products/3720-femtoammeter-voltage-source/ https://tolicore.com/product-documents/3720-Datasheet.pdf Keithley low current measurement handbook: https://www.tek.com/en/documents/product-article/keithley-low-level-measurements-handbook—7th-edition Counting LED photons video: https://www.youtube.com/watch?v=TJcMgoJ4DOE 00:00 – Femtoammeter measurement 01:16 – Tolicore 3720 Femtoammeter unboxing 03:39 – Power on and UI 05:18 – 20pA full scale range 10:13 – Bluetooth and 11:35 – Humidity …David L. JonesDemo, teardown and reverse engineering of the Tolicore 3720 Femtoammeter and voltage source. https://tolicore.com/products/3720-femtoammeter-voltage-source/ https://tolicore.com/product-documents/3720-Datasheet.pdf Keithley low current measurement handbook: https://www.tek.com/en/documents/product-article/keithley-low-level-measurements-handbook—7th-edition Counting LED photons video: https://www.youtube.com/watch?v=TJcMgoJ4DOE 00:00 – Femtoammeter measurement 01:16 – Tolicore 3720 Femtoammeter unboxing 03:39 – Power on and UI 05:18 – 20pA full scale range 10:13 – Bluetooth and 11:35 – Humidity …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1754 – 2026 Electronex Show WALKAROUND https://www.eevblog.com/2026/06/24/eevblog-1754-2026-electronex-show-walkaround/ Wed, 24 Jun 2026 03:26:22 +0000 https://www.eevblog.com/?p=76260 2026 Electronex Show Walkaround

Forum: https://www.eevblog.com/forum/blog/eevblog-1754-2026-electronex-show-walkaround/

]]> full 23:08 76260 david@alternatezone.com (David L. Jones)no2026 Electronex Show Walkaround Forum: https://www.eevblog.com/forum/blog/eevblog-1754-2026-electronex-show-walkaround/David L. Jones2026 Electronex Show Walkaround Forum: https://www.eevblog.com/forum/blog/eevblog-1754-2026-electronex-show-walkaround/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1753 – Designing a 2000V Isolated Oscilloscope (Cleverscope) https://www.eevblog.com/2026/06/24/eevblog-1753-designing-a-2000v-isolated-oscilloscope-cleverscope/ Wed, 24 Jun 2026 03:24:34 +0000 https://www.eevblog.com/?p=76254 Bart from Cleverscope returns to discuss and show off designing a 2000V isolated oscilloscope, and demonstrates measuring high voltage GaN transistors and Solid State Transformers.
https://cleverscope.com/products/CS548

Forum: https://www.eevblog.com/forum/blog/eevblog-1753-designing-a-2000v-isolated-oscilloscope-(cleverscope)/

]]> full 26:39 76254 david@alternatezone.com (David L. Jones)noBart from Cleverscope returns to discuss and show off designing a 2000V isolated oscilloscope, and demonstrates measuring high voltage GaN transistors and Solid State Transformers. https://cleverscope.com/products/CS548 Forum: https://www.eevblog.com/forum/blog/eevblog-1753-designing-a-2000v-isolated-oscilloscope-(cleverscope)/David L. JonesBart from Cleverscope returns to discuss and show off designing a 2000V isolated oscilloscope, and demonstrates measuring high voltage GaN transistors and Solid State Transformers. https://cleverscope.com/products/CS548 Forum: https://www.eevblog.com/forum/blog/eevblog-1753-designing-a-2000v-isolated-oscilloscope-(cleverscope)/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1752 – Texas Instruments SCREWED UP the NE5532 https://www.eevblog.com/2026/06/05/eevblog-1752-texas-instruments-screwed-up-the-ne5532/ Fri, 05 Jun 2026 03:50:33 +0000 https://www.eevblog.com/?p=76242 WTF were Texas Instruments thinking changing the design and major specs of the 45+ year old jellybean NE5532 audio opamp WITHOUT changing the part number?!

New datasheet: https://www.ti.com/lit/ds/symlink/ne5532.pdf
Old datasheet: https://www.mouser.com/datasheet/2/405/ne5532a-556776.pdf
Change Notification: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5726/PCN20231114002.1.pdf
Onsemi datasheet: https://www.onsemi.com/pdf/datasheet/ne5534-d.pdf
Forum thread: https://www.eevblog.com/forum/chat/ti-ne5532-audio-opamp-changes/
OPI134: https://www.ti.com/lit/ds/symlink/opa4134.pdf

00:00 – TI have changed the classic jellybean NE5534
03:27 – Product Change Notifications (PCN’s)
06:43 – List of the changes
09:07 – Don’t worry abut that 600ohm load rubbish
10:45 – Let’s look at other manufacturers
12:50 – The OPA134 has a WILD change!
18:15 – They formally claim the changes have NO IMPACT! This could get them sued…
19:20 – Is the Single NE5534 impacted?
20:30 – This LMH6518 change might be killing oscilloscopes!
23:25 – Here is how it’s done: LM317

General forum related to this video: https://www.eevblog.com/forum/blog/eevblog-1752-wtf-texas-instruments-big-ne5532-changes/

]]> full 76242 david@alternatezone.com (David L. Jones)noWTF were Texas Instruments thinking changing the design and major specs of the 45+ year old jellybean NE5532 audio opamp WITHOUT changing the part number?! New datasheet: https://www.ti.com/lit/ds/symlink/ne5532.pdf Old datasheet: https://www.mouser.com/datasheet/2/405/ne5532a-556776.pdf Change Notification: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5726/PCN20231114002.1.pdf Onsemi datasheet: https://www.onsemi.com/pdf/datasheet/ne5534-d.pdf Forum thread: https://www.eevblog.com/forum/chat/ti-ne5532-audio-opamp-changes/ OPI134: https://www.ti.com/lit/ds/symlink/opa4134.pdf 00:00 – TI have changed the classic jellybean NE5534 03:27 – Product Change …David L. JonesWTF were Texas Instruments thinking changing the design and major specs of the 45+ year old jellybean NE5532 audio opamp WITHOUT changing the part number?! New datasheet: https://www.ti.com/lit/ds/symlink/ne5532.pdf Old datasheet: https://www.mouser.com/datasheet/2/405/ne5532a-556776.pdf Change Notification: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5726/PCN20231114002.1.pdf Onsemi datasheet: https://www.onsemi.com/pdf/datasheet/ne5534-d.pdf Forum thread: https://www.eevblog.com/forum/chat/ti-ne5532-audio-opamp-changes/ OPI134: https://www.ti.com/lit/ds/symlink/opa4134.pdf 00:00 – TI have changed the classic jellybean NE5534 03:27 – Product Change …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1751 – Oscilloscope Phase Measurement Masterclass https://www.eevblog.com/2026/05/30/eevblog-1751-oscilloscope-phase-measurement-masterclass/ Fri, 29 May 2026 23:25:59 +0000 https://www.eevblog.com/?p=76234 5 different ways to measure phase angle on your oscilloscope.

00:00 – What is phase angle measurement?
01:48 – Automated measurement
06:38 – Cursor Measurement
12:24 – Graticule measurement
13:55 – Positive or Negztive? A trap for young players
14:50 – Another graticule method using horizontal shift
16:00 – How to increase horizontal measurement resolution
17:55 – Lissajous figure (X-Y mode) measurement
22:14 – Measure phase angle using Voltage? Yes, it’s possible!

Forum: https://www.eevblog.com/forum/blog/eevblog-1751-oscilloscope-phase-measurement-masterclass/

]]> full 76234 david@alternatezone.com (David L. Jones)no5 different ways to measure phase angle on your oscilloscope. 00:00 – What is phase angle measurement? 01:48 – Automated measurement 06:38 – Cursor Measurement 12:24 – Graticule measurement 13:55 – Positive or Negztive? A trap for young players 14:50 – Another graticule method using horizontal shift 16:00 – How to increase horizontal measurement resolution …David L. Jones5 different ways to measure phase angle on your oscilloscope. 00:00 – What is phase angle measurement? 01:48 – Automated measurement 06:38 – Cursor Measurement 12:24 – Graticule measurement 13:55 – Positive or Negztive? A trap for young players 14:50 – Another graticule method using horizontal shift 16:00 – How to increase horizontal measurement resolution …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1750 – Mailbag https://www.eevblog.com/2026/05/30/eevblog-1750-mailbag/ Fri, 29 May 2026 23:23:09 +0000 https://www.eevblog.com/?p=76228 More Mailbag!

00:00 – Linus Tech Tips Screwdrivers!
https://www.lttstore.com/collections/ratcheting-screwdrivers
https://www.lttstore.com/collections/precision-multi-bit-screwdriver
15:30 – Closer look at the screwdrivers
18:52 – Red Light Skin Therapy device
22:31 – Spectrum measurements
27:19 – EZABoard Arduino Learning Kit
https://ezaboard.com/
Videos shot on 16mm film!
https://odysee.com/@MatthewMulder:d
35:40 – Vintage Tek Museum CurveBug Curve Tracer Debugging Tool
https://vintagetek.org/curvebug/

Forum: https://www.eevblog.com/forum/blog/eevblog-1750-mailbag/

]]> full 76228 david@alternatezone.com (David L. Jones)noMore Mailbag! 00:00 – Linus Tech Tips Screwdrivers! https://www.lttstore.com/collections/ratcheting-screwdrivers https://www.lttstore.com/collections/precision-multi-bit-screwdriver 15:30 – Closer look at the screwdrivers 18:52 – Red Light Skin Therapy device 22:31 – Spectrum measurements 27:19 – EZABoard Arduino Learning Kit https://ezaboard.com/ Videos shot on 16mm film! https://odysee.com/@MatthewMulder:d 35:40 – Vintage Tek Museum CurveBug Curve Tracer Debugging Tool https://vintagetek.org/curvebug/ Forum: https://www.eevblog.com/forum/blog/eevblog-1750-mailbag/David L. JonesMore Mailbag! 00:00 – Linus Tech Tips Screwdrivers! https://www.lttstore.com/collections/ratcheting-screwdrivers https://www.lttstore.com/collections/precision-multi-bit-screwdriver 15:30 – Closer look at the screwdrivers 18:52 – Red Light Skin Therapy device 22:31 – Spectrum measurements 27:19 – EZABoard Arduino Learning Kit https://ezaboard.com/ Videos shot on 16mm film! https://odysee.com/@MatthewMulder:d 35:40 – Vintage Tek Museum CurveBug Curve Tracer Debugging Tool https://vintagetek.org/curvebug/ Forum: https://www.eevblog.com/forum/blog/eevblog-1750-mailbag/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1749 – Werewolf VFLEX USB-C Power Supply Adapters https://www.eevblog.com/2026/05/22/eevblog-1749-werewolf-vflex-usb-c-power-supply-adapters/ Fri, 22 May 2026 04:53:17 +0000 https://www.eevblog.com/?p=76220 Review of the Werewolf VFLEX USB-C power supply cable system.
https://werewolf.us/collections/werewolf-products/products/vflex-3-pack-starter-kit

Forum: https://www.eevblog.com/forum/blog/eevblog-1749-werewolf-vflex-usb-c-power-supply-adapters/

]]> full 76220 david@alternatezone.com (David L. Jones)noReview of the Werewolf VFLEX USB-C power supply cable system. https://werewolf.us/collections/werewolf-products/products/vflex-3-pack-starter-kit Forum: https://www.eevblog.com/forum/blog/eevblog-1749-werewolf-vflex-usb-c-power-supply-adapters/David L. JonesReview of the Werewolf VFLEX USB-C power supply cable system. https://werewolf.us/collections/werewolf-products/products/vflex-3-pack-starter-kit Forum: https://www.eevblog.com/forum/blog/eevblog-1749-werewolf-vflex-usb-c-power-supply-adapters/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1748 – Dumpster iMac BONANZA! https://www.eevblog.com/2026/05/13/eevblog-1748-dumpster-imac-bonanza/ Wed, 13 May 2026 01:32:52 +0000 https://www.eevblog.com/?p=76212 The dumpster really delivered today, with no less than FOUR 4K Retina display iMac’s! Plus a Nikon DSLR camera!

Forum: https://www.eevblog.com/forum/blog/eevblog-1748-dumpster-imac-bonanza/

]]> full 76212 david@alternatezone.com (David L. Jones)noThe dumpster really delivered today, with no less than FOUR 4K Retina display iMac’s! Plus a Nikon DSLR camera! Forum: https://www.eevblog.com/forum/blog/eevblog-1748-dumpster-imac-bonanza/David L. JonesThe dumpster really delivered today, with no less than FOUR 4K Retina display iMac’s! Plus a Nikon DSLR camera! Forum: https://www.eevblog.com/forum/blog/eevblog-1748-dumpster-imac-bonanza/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1746 – Schottky vs PN Diodes & Measurement Traps https://www.eevblog.com/2026/05/09/eevblog-1746-schottky-vs-pn-diodes-measurement-traps/ Sat, 09 May 2026 03:57:26 +0000 https://www.eevblog.com/?p=76207 Demonstrating the difference between Schottky diodes and PN junction silicon diodes, and how your multimeter can influence your measurement when troubleshooting.
Answering an interesting Twitter question.

https://x.com/blind_via/status/2052223991839170919
https://www.tti.com/content/ttiinc/en/resources/blog/infographics/schottky-diodes.html
https://engineering.purdue.edu/~ee606/downloads/ECE606_f12_Lecture17.pdf

Forum: https://www.eevblog.com/forum/blog/eevblog-1746-schottky-vs-pn-diodes-measurement-traps/

00:00 – Twitter question
01:21 – Recreating the problem
03:08 – Why doesn’t it read zero volts? Let’s try a PN junction diode
04:21 – Schottky vs PN Junction diodes, they are NOT the same!
06:06 – What about a diode tester?
07:15 – Why doesn’t the Schottky diode work like a diode?
08:39 – It’s a multimeter measurement TRAP!
10:37 – A closer look at Schottky diodes
14:21 – Datasheet inspection, and advantages vs disadvantages of Schottky diodes
15:21 – Reverse leakage current, PN vs Schottky
17:16 – THREE orders of magnitude difference!
22:29 – Digital vs Analog multimeter, Analog WINS!

]]> full 76207 david@alternatezone.com (David L. Jones)noDemonstrating the difference between Schottky diodes and PN junction silicon diodes, and how your multimeter can influence your measurement when troubleshooting. Answering an interesting Twitter question. https://x.com/blind_via/status/2052223991839170919 https://www.tti.com/content/ttiinc/en/resources/blog/infographics/schottky-diodes.html https://engineering.purdue.edu/~ee606/downloads/ECE606_f12_Lecture17.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1746-schottky-vs-pn-diodes-measurement-traps/ 00:00 – Twitter question 01:21 – Recreating the problem 03:08 – Why doesn’t it read zero volts? Let’s try a PN junction diode 04:21 …David L. JonesDemonstrating the difference between Schottky diodes and PN junction silicon diodes, and how your multimeter can influence your measurement when troubleshooting. Answering an interesting Twitter question. https://x.com/blind_via/status/2052223991839170919 https://www.tti.com/content/ttiinc/en/resources/blog/infographics/schottky-diodes.html https://engineering.purdue.edu/~ee606/downloads/ECE606_f12_Lecture17.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1746-schottky-vs-pn-diodes-measurement-traps/ 00:00 – Twitter question 01:21 – Recreating the problem 03:08 – Why doesn’t it read zero volts? Let’s try a PN junction diode 04:21 …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1746 – The 555 is 55 Years Old! https://www.eevblog.com/2026/05/05/eevblog-1746-the-555-is-55-years-old/ Tue, 05 May 2026 06:45:23 +0000 https://www.eevblog.com/?p=76201 A tribute to the 555 timer and Hans Caminzind, which turns 55 years old this year. Released on May the 5th, International 555 Timer Day at 5:55pm with a length of 5:55
And Dave demonstrates blowing out the birthday candle with his 555 Killer One Shot circuit.

Use coupon code 555 for 5% off on the EEVblog store
Hardware Store: https://eevblog.store/

https://spectrum.ieee.org/chip-hall-of-fame-signetics-ne555
https://www.righto.com/2016/02/555-timer-teardown-inside-worlds-most.html
http://www.historyofelectronics.com/Much-Ado-About-Almost-Nothing.pdf

Forum: https://www.eevblog.com/forum/blog/eevblog-1746-the-555-is-55-years-old!/

]]> full 76201 david@alternatezone.com (David L. Jones)noA tribute to the 555 timer and Hans Caminzind, which turns 55 years old this year. Released on May the 5th, International 555 Timer Day at 5:55pm with a length of 5:55 And Dave demonstrates blowing out the birthday candle with his 555 Killer One Shot circuit. Use coupon code 555 for 5% off on …David L. JonesA tribute to the 555 timer and Hans Caminzind, which turns 55 years old this year. Released on May the 5th, International 555 Timer Day at 5:55pm with a length of 5:55 And Dave demonstrates blowing out the birthday candle with his 555 Killer One Shot circuit. Use coupon code 555 for 5% off on …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic Norwest Business Park Internet is DOWN FOR 2 WEEKS! https://www.eevblog.com/2026/04/30/norwest-business-park-internet-is-down-for-2-weeks/ Thu, 30 Apr 2026 06:47:25 +0000 https://www.eevblog.com/?p=76195 Walk time rant. The NBN Internet in the Norwest Business Park has been down for 6 days now since April 24th, and was supposed to be fixed today. But the latest update is now 8th May!
This impacts thousands of businesses in the business park, and Telstra mobile is on it’s knees as a result as everyone scrambles for another solution. And my backup Optus 5G connection is also barely operational under the strain.
I’m uploading this from home because I only have 1Mbps upload speed at the lab.

]]> 76195 david@alternatezone.com (David L. Jones) EEVblog 1745 – How LOUD is the Continuity Tester https://www.eevblog.com/2026/04/27/eevblog-1745-how-loud-is-the-continuity-tester/ Mon, 27 Apr 2026 05:49:02 +0000 https://www.eevblog.com/?p=76183 Testing the loudness of a new version of the BM2257 multimeter firmware using the CRY2851 Class 1 sound level meter.
https://www.crysound.com/product/cry2851-sound-level-meter/
COUPON CODE: LOUD for 10% off the BM2257
Hardware Store: https://eevblog.store/

00:00 – BM2257 Firmware changes
01:58 – Crysound CRY2851 Class 1 Sound Level Analyser
06:26 – Lab baseline dBA measurement
07:39 – dBA vs dBC vs dBZ weighting
08:51 – BM2257 Buzzer measurements
10:06 – Low frequency spectral analysis (How Low is Dave’s voice?)
11:00 – Designing and building a DIY acoustic test chamber
11:57 – BM2257 frequency spectrum analysis
14:04 – Different angle and distance repeat measurement
15:09 – Conclusion
17:26 – Bonus ventilation fan measurement

Forum: https://www.eevblog.com/forum/blog/eevblog-1745-how-loud-is-the-continuity-tester/

]]> full 76183 david@alternatezone.com (David L. Jones)noTesting the loudness of a new version of the BM2257 multimeter firmware using the CRY2851 Class 1 sound level meter. https://www.crysound.com/product/cry2851-sound-level-meter/ COUPON CODE: LOUD for 10% off the BM2257 Hardware Store: https://eevblog.store/ 00:00 – BM2257 Firmware changes 01:58 – Crysound CRY2851 Class 1 Sound Level Analyser 06:26 – Lab baseline dBA measurement 07:39 – dBA …David L. JonesTesting the loudness of a new version of the BM2257 multimeter firmware using the CRY2851 Class 1 sound level meter. https://www.crysound.com/product/cry2851-sound-level-meter/ COUPON CODE: LOUD for 10% off the BM2257 Hardware Store: https://eevblog.store/ 00:00 – BM2257 Firmware changes 01:58 – Crysound CRY2851 Class 1 Sound Level Analyser 06:26 – Lab baseline dBA measurement 07:39 – dBA …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1744 – NEW Micsig DP700 High Voltage Differential Probe https://www.eevblog.com/2026/04/15/eevblog-1744-new-micsig-dp700-high-voltage-differential-probe/ Wed, 15 Apr 2026 00:38:34 +0000 https://www.eevblog.com/?p=76173 The DP700 is Micsig’s third suck of the sav on a high voltage differential probe. Not to be confused with the MDP700 which this replaces.

https://www.micsig.com/DPA/

00:00 – Comparison to the DP10007 and MDP700
03:58 – Unboxing of the DP700
05:52 – CMRR measurement hardware setup
09:52 – Sanity check gain and bandwidth check.
11:29 – Zero function
12:25 – Measuring the CMRR
16:30 – Trap for young players. RMS vs AC RMS, it’s all in the sigma
17:44 – Another trap for young players, double sigma
19:07 – CMRR at 100MHz
22:41 – Real world test on a 100V GaN MOSFET
25:28 – Teardown
29:44 – PCB inspection

Forum: https://www.eevblog.com/forum/blog/eevblog-1744-new-micsig-dp700-high-voltage-differential-probe/

Teardown photos:
Micsig DP700 High Voltage Differential Probe Teardown

]]> full 76173 david@alternatezone.com (David L. Jones)noThe DP700 is Micsig’s third suck of the sav on a high voltage differential probe. Not to be confused with the MDP700 which this replaces. https://www.micsig.com/DPA/ 00:00 – Comparison to the DP10007 and MDP700 03:58 – Unboxing of the DP700 05:52 – CMRR measurement hardware setup 09:52 – Sanity check gain and bandwidth check. 11:29 …David L. JonesThe DP700 is Micsig’s third suck of the sav on a high voltage differential probe. Not to be confused with the MDP700 which this replaces. https://www.micsig.com/DPA/ 00:00 – Comparison to the DP10007 and MDP700 03:58 – Unboxing of the DP700 05:52 – CMRR measurement hardware setup 09:52 – Sanity check gain and bandwidth check. 11:29 …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1743 – Mechanical Vibration Detection with your Oscilloscope Probe https://www.eevblog.com/2026/03/31/eevblog-1743-mechanical-vibration-detection-with-your-oscilloscope-probe/ Tue, 31 Mar 2026 10:00:40 +0000 https://www.eevblog.com/?p=76159 Dave shows you how to use your oscilloscope probe to detect mechanical vibrational modes on your PCB. And shows off the Crysound Acoustic Imaging Camera!
https://www.kickstarter.com/projects/pocket-acoustic-cam/crysound-pocket-acoustic-imaging-camera/

Forum: https://www.eevblog.com/forum/blog/eevblog-1743-mechanical-vibration-detection-with-your-oscilloscope-probe/

]]> full 76159 david@alternatezone.com (David L. Jones)noDave shows you how to use your oscilloscope probe to detect mechanical vibrational modes on your PCB. And shows off the Crysound Acoustic Imaging Camera! https://www.kickstarter.com/projects/pocket-acoustic-cam/crysound-pocket-acoustic-imaging-camera/ Forum: https://www.eevblog.com/forum/blog/eevblog-1743-mechanical-vibration-detection-with-your-oscilloscope-probe/David L. JonesDave shows you how to use your oscilloscope probe to detect mechanical vibrational modes on your PCB. And shows off the Crysound Acoustic Imaging Camera! https://www.kickstarter.com/projects/pocket-acoustic-cam/crysound-pocket-acoustic-imaging-camera/ Forum: https://www.eevblog.com/forum/blog/eevblog-1743-mechanical-vibration-detection-with-your-oscilloscope-probe/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1742 – Today in the Dumpster Room https://www.eevblog.com/2026/03/31/eevblog-1742-today-in-the-dumpster-room/ Tue, 31 Mar 2026 07:51:13 +0000 https://www.eevblog.com/?p=76153 More Dumpster Diving. What did we score today?

Forum: https://www.eevblog.com/forum/blog/eevblog-1742-today-in-the-dumpster-room/

]]> full 76153 david@alternatezone.com (David L. Jones)noMore Dumpster Diving. What did we score today? Forum: https://www.eevblog.com/forum/blog/eevblog-1742-today-in-the-dumpster-room/David L. JonesMore Dumpster Diving. What did we score today? Forum: https://www.eevblog.com/forum/blog/eevblog-1742-today-in-the-dumpster-room/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1741 – Mailbag! https://www.eevblog.com/2026/03/25/eevblog-1741-mailbag/ Wed, 25 Mar 2026 11:14:26 +0000 https://www.eevblog.com/?p=76147 More amazing Mailbag!

00:00 – BOOK Professional Electronic Design Best Practices, Volume II
06:01 – A Crusty Nautalytics Simple Compass
11:46 – DPS DIN Power Supply Modules
https://digitalpowersystems.eu/hdr20/

USB-AC-PD


20:22 – The Book: The Ultimate Guide to Rebuilding a Civilization

Forum: https://www.eevblog.com/forum/blog/eevblog-1741-mailbag/

]]> full 76147 david@alternatezone.com (David L. Jones)noMore amazing Mailbag! 00:00 – BOOK Professional Electronic Design Best Practices, Volume II 06:01 – A Crusty Nautalytics Simple Compass 11:46 – DPS DIN Power Supply Modules https://digitalpowersystems.eu/hdr20/ USB-AC-PD 20:22 – The Book: The Ultimate Guide to Rebuilding a Civilization Forum: https://www.eevblog.com/forum/blog/eevblog-1741-mailbag/David L. JonesMore amazing Mailbag! 00:00 – BOOK Professional Electronic Design Best Practices, Volume II 06:01 – A Crusty Nautalytics Simple Compass 11:46 – DPS DIN Power Supply Modules https://digitalpowersystems.eu/hdr20/ USB-AC-PD 20:22 – The Book: The Ultimate Guide to Rebuilding a Civilization Forum: https://www.eevblog.com/forum/blog/eevblog-1741-mailbag/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1740 – Dumpster Diving Dell Laptop HAUL! https://www.eevblog.com/2026/03/16/eevblog-1740-dumpster-diving-dell-laptop-haul/ Mon, 16 Mar 2026 05:50:12 +0000 https://www.eevblog.com/?p=76139 Looking at a dumpster diving Dell laptop HAUL! with Sagan!

Forum: https://www.eevblog.com/forum/blog/eevblog-1740-dumpster-diving-dell-laptop-haul!/

]]> full 76139 david@alternatezone.com (David L. Jones)noLooking at a dumpster diving Dell laptop HAUL! with Sagan! Forum: https://www.eevblog.com/forum/blog/eevblog-1740-dumpster-diving-dell-laptop-haul!/David L. JonesLooking at a dumpster diving Dell laptop HAUL! with Sagan! Forum: https://www.eevblog.com/forum/blog/eevblog-1740-dumpster-diving-dell-laptop-haul!/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1739 – UNUSUAL FAULT! in a Beelink Ryzen 9 Mini PC https://www.eevblog.com/2026/03/16/eevblog-1739-unusual-fault-in-a-beelink-ryzen-9-mini-pc/ Mon, 16 Mar 2026 05:48:10 +0000 https://www.eevblog.com/?p=76133 The Beelink EQR6 Ryzen 9 Mini PC mysteriously failed after an upgrade, why?

00:00 – This Beelink EQR6 failed just after an upgrade, WHY?
02:28 – Is is the flat flexes?
04:45 – Woah, what’s THIS?
07:17 – Nooooooooo! It can’t be…

Forum: https://www.eevblog.com/forum/blog/eevblog-1739-unusual-fault-in-a-beelink-ryzen-9-mini-pc/

]]> full 76133 david@alternatezone.com (David L. Jones)noThe Beelink EQR6 Ryzen 9 Mini PC mysteriously failed after an upgrade, why? 00:00 – This Beelink EQR6 failed just after an upgrade, WHY? 02:28 – Is is the flat flexes? 04:45 – Woah, what’s THIS? 07:17 – Nooooooooo! It can’t be… Forum: https://www.eevblog.com/forum/blog/eevblog-1739-unusual-fault-in-a-beelink-ryzen-9-mini-pc/David L. JonesThe Beelink EQR6 Ryzen 9 Mini PC mysteriously failed after an upgrade, why? 00:00 – This Beelink EQR6 failed just after an upgrade, WHY? 02:28 – Is is the flat flexes? 04:45 – Woah, what’s THIS? 07:17 – Nooooooooo! It can’t be… Forum: https://www.eevblog.com/forum/blog/eevblog-1739-unusual-fault-in-a-beelink-ryzen-9-mini-pc/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1738 – Solar Freakin’ Roadways NEW FUNDING! https://www.eevblog.com/2026/03/07/eevblog-1738-solar-freakin-roadways-new-funding/ Sat, 07 Mar 2026 04:35:59 +0000 https://www.eevblog.com/?p=76125 Everyone’s favorite Solar Roadway, the OG Solar Freakin’ Roadways is still going strong with NEW EQUITY FUNDING!

WeFunder: https://wefunder.com/solar.roadways.incorporated
StartEngine: https://www.startengine.com/offering/solar-roadways
US Army contract: https://www.highergov.com/contract/W5170122C0119/

Forum: https://www.eevblog.com/forum/blog/eevblog-1738-solar-freakin-roadways-new-funding!/

]]> full 76125 david@alternatezone.com (David L. Jones)noEveryone’s favorite Solar Roadway, the OG Solar Freakin’ Roadways is still going strong with NEW EQUITY FUNDING! WeFunder: https://wefunder.com/solar.roadways.incorporated StartEngine: https://www.startengine.com/offering/solar-roadways US Army contract: https://www.highergov.com/contract/W5170122C0119/ Forum: https://www.eevblog.com/forum/blog/eevblog-1738-solar-freakin-roadways-new-funding!/David L. JonesEveryone’s favorite Solar Roadway, the OG Solar Freakin’ Roadways is still going strong with NEW EQUITY FUNDING! WeFunder: https://wefunder.com/solar.roadways.incorporated StartEngine: https://www.startengine.com/offering/solar-roadways US Army contract: https://www.highergov.com/contract/W5170122C0119/ Forum: https://www.eevblog.com/forum/blog/eevblog-1738-solar-freakin-roadways-new-funding!/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1737 – Alex Lidow: Inventor of the Power MOSFET https://www.eevblog.com/2026/03/07/eevblog-1737-alex-lidow-inventor-of-the-power-mosfet/ Sat, 07 Mar 2026 04:32:59 +0000 https://www.eevblog.com/?p=76119 A chat with Alex Lidow, the inventor of the original Power MOSFET and HEXFET at International Rectifier.
Former CEO of International Rectifier (founded by his father!), and now Founder & CEO of EPC (Efficient Power Conversion) that make the most efficient GaN FET’s on the market.
https://epc-co.com
We cover everything from inventing the power MOSFET on his first day on the job to silicon physics and AI data centres and humanoid robots.

00:00 – Alex Lidow
05:08 – What’s the definition of an Engineer?
06:07 – Inventing the Power MOSFET 400V/1ohm first day on the job with Tom Herman
09:16 – The flash of brilliance: Inject charge into the region
10:36 – Steve Wozniak and the Apple IIE PSU
12:02 – IRF100 and IRF130 HEXFET
14:18 – 42 Competitors!
15:54 – Major Innovations in MOSFET’s
17:00 – CoolMOS from Siemens
18:23 – TrenchMOS from Vishay
19:17 – Silicon Carbide started as a diode
21:46 – 2D Electron Gas (2DEG)
24:40 – Silicon MOSFET game is won by the deepest pockets
25:09 – Getting fired from IR and starting Starting EPC
26:28 – Get that damn Gallium out of my Silicon fab!
29:31 – Integrated GaN Solutions
31:03 – The physics of Radiation Hardening in MOSFET’s
34:23 – The market for high voltage transistors
36:00 – The 200V and under MOSFET market is performance driven
39:13 – Protecting Patents in China is EASIER than in the US!
41:41 – AI Data centres and NVIDIA modules
44:46 – 800V AI power module architecture
47:42 – Multi level DC-DC topology ISOP
49:46 – Frequency trade-off in LLC DC-DC converter design
56:13 – Humanoid robots
58:16 – What is the most popular GaN?
59:24 – Buyouts?
01:00:36 – Evaluation Boards
01:03:34 – Darkening the digital sky

Forum: https://www.eevblog.com/forum/blog/eevblog-1737-alex-lidow-inventor-of-the-power-mosfet/

]]> full 76119 david@alternatezone.com (David L. Jones)noA chat with Alex Lidow, the inventor of the original Power MOSFET and HEXFET at International Rectifier. Former CEO of International Rectifier (founded by his father!), and now Founder & CEO of EPC (Efficient Power Conversion) that make the most efficient GaN FET’s on the market. https://epc-co.com We cover everything from inventing the power MOSFET …David L. JonesA chat with Alex Lidow, the inventor of the original Power MOSFET and HEXFET at International Rectifier. Former CEO of International Rectifier (founded by his father!), and now Founder & CEO of EPC (Efficient Power Conversion) that make the most efficient GaN FET’s on the market. https://epc-co.com We cover everything from inventing the power MOSFET …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1736 – TOP 5 Jellybean MOSFET’s https://www.eevblog.com/2026/03/07/eevblog-1736-top-5-jellybean-mosfets/ Sat, 07 Mar 2026 03:44:31 +0000 https://www.eevblog.com/?p=76113 What are the TOP 5 Jellybean MOSFET’s?

00:00 – MOSFET vs BJT
02:21 – What is a Jellybean?
04:14 – 2N7002 N-Channel wimpy generic
13:10 – BSS84 P-Channel wimpy generic
14:47 – AO3400 N-Channel SOT-23
21:30 – Continuous Current vs Pulse Current Rating and SOA Graph
24:15 – AO3401 P-Channel SOT-23
25:56 – AO4410 N-Channel SO-8 High Current
30:10 – AO4407 P-Channel SO-8 High Current
31:18 – IRLML2502 N-Channel Low Gate Voltage
33:51 – IRLML6401 P-Channel Low Gate Voltage
34:15 – IRLZ44 N-Channel Big Package
37:21 – IRF510 Special Mention
37:37 – IRF4905 P-Channel Big Package

Jellybean Playlist: https://www.youtube.com/playlist?list=PLvOlSehNtuHtdQF-m5UFZ5GEjABadI3kI

Forum: https://www.eevblog.com/forum/blog/eevblog-1736-top-5-jellybean-mosfets/

]]> full 76113 david@alternatezone.com (David L. Jones)noWhat are the TOP 5 Jellybean MOSFET’s? 00:00 – MOSFET vs BJT 02:21 – What is a Jellybean? 04:14 – 2N7002 N-Channel wimpy generic 13:10 – BSS84 P-Channel wimpy generic 14:47 – AO3400 N-Channel SOT-23 21:30 – Continuous Current vs Pulse Current Rating and SOA Graph 24:15 – AO3401 P-Channel SOT-23 25:56 – AO4410 N-Channel …David L. JonesWhat are the TOP 5 Jellybean MOSFET’s? 00:00 – MOSFET vs BJT 02:21 – What is a Jellybean? 04:14 – 2N7002 N-Channel wimpy generic 13:10 – BSS84 P-Channel wimpy generic 14:47 – AO3400 N-Channel SOT-23 21:30 – Continuous Current vs Pulse Current Rating and SOA Graph 24:15 – AO3401 P-Channel SOT-23 25:56 – AO4410 N-Channel …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic eevBLAB 138 – The AI Supply Chain is INSANE https://www.eevblog.com/2026/02/26/eevblab-138-the-ai-supply-chain-is-insane/ Wed, 25 Feb 2026 23:10:15 +0000 https://www.eevblog.com/?p=76103 Nobody truly understands the complexity of modern supply chains for the technology we take for granted. How the AI supply chain works, from ChatGPT to sugercane
https://aisupplychain.vercel.app/
https://x.com/chiefofautism

Forum: https://www.eevblog.com/forum/blog/eevblab-138-you-dont-understand-supply-chains!/

]]> full 76103 david@alternatezone.com (David L. Jones)noNobody truly understands the complexity of modern supply chains for the technology we take for granted. How the AI supply chain works, from ChatGPT to sugercane https://aisupplychain.vercel.app/ https://x.com/chiefofautism Forum: https://www.eevblog.com/forum/blog/eevblab-138-you-dont-understand-supply-chains!/David L. JonesNobody truly understands the complexity of modern supply chains for the technology we take for granted. How the AI supply chain works, from ChatGPT to sugercane https://aisupplychain.vercel.app/ https://x.com/chiefofautism Forum: https://www.eevblog.com/forum/blog/eevblab-138-you-dont-understand-supply-chains!/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1735 – Power Rail Probing & Oscilloscope DC Offset EXPLAINED https://www.eevblog.com/2026/02/20/eevblog-1735-power-rail-probing-oscilloscope-dc-offset-explained/ Fri, 20 Feb 2026 04:42:17 +0000 https://www.eevblog.com/?p=76097 How to measure DC power rail high bandwidth waveforms with the offset control on your oscilloscope. Active Probes, Passive Probes, Z0 probes, and specific DC Power Rail Probes are compared.

00:00 – How to measure power rails with Active Probes and Power Rail probes
08:03 – Signal Skew
09:54 – 10:1 Passive Probe
10:18 – Example of an 8 bit scope with no offset adjust
10:39 – Trap for young players. Input referred offset.
12:41 – Cheap DIY Z0 Probe
14:41 – Offset range changes based on V/div, don’t be fooled.
16:48 – Rigol Scopes
17:20 – Siglent Scopes & How models differ
18:53 – Why the complete opposite between Keysight/R&S and Rigol/Siglent?

PRP1: https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/
Power Rail Probe DIY project in Silicon Chip:
https://www.siliconchip.com.au/Issue/SC/2025/November

Forum: https://www.eevblog.com/forum/blog/eevblog-1735-oscilloscope-dc-offset-explained/

]]> full 76097 david@alternatezone.com (David L. Jones)noHow to measure DC power rail high bandwidth waveforms with the offset control on your oscilloscope. Active Probes, Passive Probes, Z0 probes, and specific DC Power Rail Probes are compared. 00:00 – How to measure power rails with Active Probes and Power Rail probes 08:03 – Signal Skew 09:54 – 10:1 Passive Probe 10:18 – …David L. JonesHow to measure DC power rail high bandwidth waveforms with the offset control on your oscilloscope. Active Probes, Passive Probes, Z0 probes, and specific DC Power Rail Probes are compared. 00:00 – How to measure power rails with Active Probes and Power Rail probes 08:03 – Signal Skew 09:54 – 10:1 Passive Probe 10:18 – …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1734 – Uni-T UT892 2000V High Voltage Multimeter TESTED https://www.eevblog.com/2026/02/17/eevblog-1734-uni-t-ut892-2000v-high-voltage-multimeter-tested/ Tue, 17 Feb 2026 00:48:21 +0000 https://www.eevblog.com/?p=76089 The Uni-T UT892 High Voltage Multimeter is unusually rated to 2000V!
Teardown and testing time, is it any good?

00:00 – Uni-T UT892 2000V High Voltage Multimeter
02:39 – Unboxing
03:40 – FAIL right off the bat! Probes matter.
05:53 – Teardown
08:06 – Where’s the MOV’s?
09:07 – The case design leaves a lot to be desired
09:23 – PCB switch contact side
09:44 – Houston, we have a clearance problem.
11:20 – It’s going in unprotected
13:08 – The case sucks
13:56 – High Voltage testing within range
15:15 – What’s up with this NCV tester?
16:48 – Do we care about the autoranging and continuity tester at this point?
17:35 – 2500V test
19:05 – 5000V test!
21:03 – Inspection + chipset
21:26 – 5000V test again with cover off
22:20 – What a surprise! It failed exactly where I said it would.
23:25 – Proper high voltage design
24:50 – Conclusion

Forum: https://www.eevblog.com/forum/blog/eevblog-1734-uni-t-ut892-2000v-high-voltage-multimeter-tested/

]]> full 76089 david@alternatezone.com (David L. Jones)noThe Uni-T UT892 High Voltage Multimeter is unusually rated to 2000V! Teardown and testing time, is it any good? 00:00 – Uni-T UT892 2000V High Voltage Multimeter 02:39 – Unboxing 03:40 – FAIL right off the bat! Probes matter. 05:53 – Teardown 08:06 – Where’s the MOV’s? 09:07 – The case design leaves a lot …David L. JonesThe Uni-T UT892 High Voltage Multimeter is unusually rated to 2000V! Teardown and testing time, is it any good? 00:00 – Uni-T UT892 2000V High Voltage Multimeter 02:39 – Unboxing 03:40 – FAIL right off the bat! Probes matter. 05:53 – Teardown 08:06 – Where’s the MOV’s? 09:07 – The case design leaves a lot …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1733 – Mailbag: 2GHz Power Rail Probe, Retro Chip Tester https://www.eevblog.com/2026/02/06/eevblog-1733-mailbag-2ghz-power-rail-probe-retro-chip-tester/ Fri, 06 Feb 2026 02:29:20 +0000 https://www.eevblog.com/?p=76081 More mailbag!

00:00 – Vetus Pars Retro Chip Tester
https://retrotroniks.com/product/vetus-pars-retro-chip-tester/
17:05 – PRP1 2GHz Power Rail probe
https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/
22:07 – PRP1 Teardown
24:10 – PRP1 Circuit Explanation
27:08 – PRP1 Testing
32:09 – Comparison with Agilent 2GHz Active Probe

Forum: https://www.eevblog.com/forum/blog/eevblog-1733-mailbag-2ghz-power-rail-probe-retro-chip-tester/

]]> full 76081 david@alternatezone.com (David L. Jones)noMore mailbag! 00:00 – Vetus Pars Retro Chip Tester https://retrotroniks.com/product/vetus-pars-retro-chip-tester/ 17:05 – PRP1 2GHz Power Rail probe https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/ 22:07 – PRP1 Teardown 24:10 – PRP1 Circuit Explanation 27:08 – PRP1 Testing 32:09 – Comparison with Agilent 2GHz Active Probe Forum: https://www.eevblog.com/forum/blog/eevblog-1733-mailbag-2ghz-power-rail-probe-retro-chip-tester/David L. JonesMore mailbag! 00:00 – Vetus Pars Retro Chip Tester https://retrotroniks.com/product/vetus-pars-retro-chip-tester/ 17:05 – PRP1 2GHz Power Rail probe https://www.eevblog.com/forum/testgear/prp1-low-cost-2ghz-power-rail-probe/ 22:07 – PRP1 Teardown 24:10 – PRP1 Circuit Explanation 27:08 – PRP1 Testing 32:09 – Comparison with Agilent 2GHz Active Probe Forum: https://www.eevblog.com/forum/blog/eevblog-1733-mailbag-2ghz-power-rail-probe-retro-chip-tester/podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic EEVblog 1732 – 20yo 1000+ Cycle Panasonic Li-Ion Battery TESTED https://www.eevblog.com/2026/01/30/eevblog-1732-20yo-1000-cycle-panasonic-li-ion-battery-tested/ Fri, 30 Jan 2026 01:17:21 +0000 https://www.eevblog.com/?p=76073 How much capacity has this 20+yo 1000+ cycle Panasonic 14500 lithium ion battery lost?

00:00 – Panasonic electronic shaver teardown
06:30 – Battery dimensions match the type number
08:24 – The battery capacity test setup
10:40 – 500mA Constant Current test
11:38 – How much energy is left in a “flat” battery?
13:46 – 250mA Constant Current test
14:54 – 100mA Constant Current test
15:13 – Results analysis. Talking head Dave
19:11 – How to scale time in Excel
21:20 – How to get a characteristic battery capacity graph in Excel
24:35 – Energy in a battery and the characteristic curve area, it’s just an integral
26:30 – Optimising product design and battery cutoff voltage
29:13 – Battery current measured

Forum: https://www.eevblog.com/forum/blog/eevblog-1732-20yo-1000-cycle-panasonic-li-ion-battery-tested/

]]> full 29:37 76073 david@alternatezone.com (David L. Jones)noHow much capacity has this 20+yo 1000+ cycle Panasonic 14500 lithium ion battery lost? 00:00 – Panasonic electronic shaver teardown 06:30 – Battery dimensions match the type number 08:24 – The battery capacity test setup 10:40 – 500mA Constant Current test 11:38 – How much energy is left in a “flat” battery? 13:46 – 250mA …David L. JonesHow much capacity has this 20+yo 1000+ cycle Panasonic 14500 lithium ion battery lost? 00:00 – Panasonic electronic shaver teardown 06:30 – Battery dimensions match the type number 08:24 – The battery capacity test setup 10:40 – 500mA Constant Current test 11:38 – How much energy is left in a “flat” battery? 13:46 – 250mA …podcast,video,engineer,engineering,electronics,design,build,book,review,equipment,pcb,circuit,schematic