tag:blogger.com,1999:blog-4609238170931947864Wed, 01 Feb 2012 07:08:17 +0000low pass filterL200 PSUDC12V to DC50V converter200W Audio AmplifierParallel Port Relay Interface18W audio amplifier5v power supply circuitInfra Red Night VisionIR Remote-Control CheckerDelayVariable DC Power SupplyOver / Under voltage cut-off5v/1A power supplyLED TimerMAX 2606FM Stereo EncoderMicrocontrollerAC Current MonitorAtmel ProgrammerChristmas Star12 Volt 30 Amp PSUTelephoneAudio level Meter50 Watt Power Amplifierlight and LEDMotorola Hi-Fi power amplifierAmplifier25 Watt Audio AmplifierAutomotive 12V to +-20V converter13.8V/10A power supplytimer17W Audio Amplifiersoft start PSUAlarmLong Loopstick Antenna6V to 12V converterMorse CodeCommunicationSTKLA4440audio level indicator circuitDC13.8V to DC250VMosFet Audio AmplifierDC Converters2n3055 Amplifiermosquito repellerOp-Amp radioInverterMini-box 2W AmplifierRFMains LEDSolar PanelsFM TransmitterHeadphone AmplifierElectronic ThermostatVolume Controller15W Audio AmplifierToysQROOver voltage Protection for LM317PrescalerChristmasFM 30W TransmitterNi-Cad Battery ChargerSelf Switching PSUInfra Red SwitchAntennaStrobe LightUniversal PSU -L200LED Circuits60 Watt Power AmplifierLoudspeaker protection3-30/2.5A Stabilized power supplyBalanced Line ConverterMuscular Bio StimulatorGuitar AmplifierTV ModulatorSleeping-AidTV Signal Amplifier100W Audio AmplifierLCD DisplayPassive Aircraft ReceiverTV TransmitterAudio power AmplifierProgrammable LED FlashersFM PLL TransmitterBattery30 Meter Receiver ProjectTransmitterPIC ProgrammerRegulated Power SupplyProximity DetectorUltrasonicAmplifier TimerClass-A Audio Amplifier13.8V/20A power supplyTV AmplifierVHF TransmitterFull-duplex IntercomAmplifier of acoustic frequenciesHi-FiUnbalancedBurglar AlarmSubwhooferHamSecurityHigh current Supply500W (220V) InverterInfra Red AudioLaser Transmission555cw TransmitterProgrammerAudioRelayDTMFAllpass network shifts signals 90°FM StereoTransmitterRF AmplifierSurround SoundPower supplyVideo Signal AmplifierHeat Sensitive SwitchTransmitter power Amplifierelectronic mosquito repeller cd4047Voltage Inverter13.8V/40A power supplyBass AmplifierBass-TrebleCode Lock120 VAC InverterLead Acid Battery ChargerBFOLight/dark activated relayDoor Bell circuitsAM Transmitteron-off switchTone ControlLaserPSU with Overvoltage ProtectionRadio40 m Band Direct Conversion ReceiverParrot Sounding buzzer circuitsReceiverLamp Fadersound Operated SwitchAlertstarDimmer9V 2A power supplyDual Power SupplyCB TransmittorBattery ChargerAudio circuitsModular Audio PreamplifierPreAmplifierGyrator CircuitH-BridgeTime DelayBattery-Tester (1.5-15V)Active Antennaremote controllerWhistle ResponderTTL Power SupplyQuadraphonic AmplifierBuzzer CircuitsFixed Power Supply150W Audio AmplifierIncreasing Regulator CurrentIgnition CircuitAudio mixerFrequency GeneratorsInfra RedUPSMusic CircuitsElectronic Circuits, Hobby Circuits, Audio-video circuits, Radio circuits, Power supply, Digital Circuits, Embedded Circuits, Amplifiers 無料の電子回路、ホビー回路、オーディオ-ビデオ回路、無線回路、電源、デジタル回路、組み込み回路、アンプhttp://electronics4everyone.blogspot.com/noreply@blogger.com (renlabs)Blogger323125noreply@blogger.comnoElectronic Circuits, Hobby Circuits, Audio-video circuits, Radio circuits, Power supply, Digital Circuits, Embedded Circuits, Amplifiers 無料の電子回路、ホビー回路、オーディオ-ビデオ回路、無線回路、電源、デジタル回路、組み込み回路、アンプElectronic Circuits, Hobby Circuits, Audio-video circuits, Radio circuits, Power supply, Digital Circuits, Embedded Circuits, Amplifiers 無料の電子回路、ホビー回路、オーディオ-ビデオ回路、無線回路、電源、デジタル回路、組み込み回路、アンプtag:blogger.com,1999:blog-4609238170931947864.post-937516184409763359Mon, 30 Jan 2012 16:01:00 +00002012-01-30T08:02:13.672-08:00Subscribe to Electronics Circuits by Emailhttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/83tKCV--u_s/t2012.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/fi7wj66f0av_te2jGECaJadzJO0/0/da"><img src="http://feedads.g.doubleclick.net/~a/fi7wj66f0av_te2jGECaJadzJO0/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/fi7wj66f0av_te2jGECaJadzJO0/1/da"><img src="http://feedads.g.doubleclick.net/~a/fi7wj66f0av_te2jGECaJadzJO0/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/83tKCV--u_s" height="1" width="1"/>http://electronics4everyone.blogspot.com/2012/01/t2012.htmltag:blogger.com,1999:blog-4609238170931947864.post-8377455785295049571Tue, 01 Feb 2011 02:24:00 +00002011-01-31T18:25:28.242-08:00Subscribe to Electronics Circuits by Emailhttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/_CVSMNgAka8/t2.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/KKPcy-YS7kOzCvA5WFnwZMN12GI/0/da"><img src="http://feedads.g.doubleclick.net/~a/KKPcy-YS7kOzCvA5WFnwZMN12GI/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/KKPcy-YS7kOzCvA5WFnwZMN12GI/1/da"><img src="http://feedads.g.doubleclick.net/~a/KKPcy-YS7kOzCvA5WFnwZMN12GI/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/_CVSMNgAka8" height="1" width="1"/>http://electronics4everyone.blogspot.com/2011/01/t2.htmltag:blogger.com,1999:blog-4609238170931947864.post-4883404657332437405Thu, 28 Oct 2010 20:04:00 +00002010-10-28T13:04:27.424-07:00Subscribe to Electronics Circuits by Emailhttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/1CG3F1APOdk/te.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/6YHg-B7n1c4H_VqZQPXnYX0e4XA/0/da"><img src="http://feedads.g.doubleclick.net/~a/6YHg-B7n1c4H_VqZQPXnYX0e4XA/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/6YHg-B7n1c4H_VqZQPXnYX0e4XA/1/da"><img src="http://feedads.g.doubleclick.net/~a/6YHg-B7n1c4H_VqZQPXnYX0e4XA/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/1CG3F1APOdk" height="1" width="1"/>http://electronics4everyone.blogspot.com/2010/10/te.htmltag:blogger.com,1999:blog-4609238170931947864.post-330112448191332959Fri, 24 Sep 2010 02:39:00 +00002010-10-05T10:34:28.184-07:00AudioAudio circuitsAmplifierSubscribe to Electronics Circuits by EmailThis is just another 20W audio amplifier circuit , but this time based on the LM1875 audio amplifier IC from National Semiconductors. With a 25V dual power supply LM1875 can deliver 20W of audio power into a 4 ohm speaker. The LM1875 requires very less external components and has very low distortion. The IC is also packed with a lot good features like http://feedproxy.google.com/~r/ElectronicsCircuits/~3/BvEWJhoW6ZI/subscribe-to-electronics-circuits-by.htmlnoreply@blogger.com (renlabs)1<p><a href="http://feedads.g.doubleclick.net/~a/VNl7u_9GqOtPUoAHwjs4Vs80ufY/0/da"><img src="http://feedads.g.doubleclick.net/~a/VNl7u_9GqOtPUoAHwjs4Vs80ufY/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/VNl7u_9GqOtPUoAHwjs4Vs80ufY/1/da"><img src="http://feedads.g.doubleclick.net/~a/VNl7u_9GqOtPUoAHwjs4Vs80ufY/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/BvEWJhoW6ZI" height="1" width="1"/>http://electronics4everyone.blogspot.com/2010/09/subscribe-to-electronics-circuits-by.htmltag:blogger.com,1999:blog-4609238170931947864.post-4081203483499451932Thu, 01 Jul 2010 06:20:00 +00002010-07-01T02:36:00.411-07:00Solar PanelsSubscribe to Electronics Circuits by EmailI hope to cover this article with the following. Don’t know I have succeed in this.What are solar panels?How do solar panels work?How to make panels?Solar Panels use arrays of solar photovoltaic cells to convert incoming photons from sun into usable electricity. With solar panels we are using echo friendly renewable energy from the sun.Solar panels are http://feedproxy.google.com/~r/ElectronicsCircuits/~3/yKSOOmgEjlg/all-about-solar-panels.htmlnoreply@blogger.com (renlabs)1<p><a href="http://feedads.g.doubleclick.net/~a/M3glE7q3EYIlnSMMeJdxQHMpATM/0/da"><img src="http://feedads.g.doubleclick.net/~a/M3glE7q3EYIlnSMMeJdxQHMpATM/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/M3glE7q3EYIlnSMMeJdxQHMpATM/1/da"><img src="http://feedads.g.doubleclick.net/~a/M3glE7q3EYIlnSMMeJdxQHMpATM/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/yKSOOmgEjlg" height="1" width="1"/>http://electronics4everyone.blogspot.com/2010/06/all-about-solar-panels.htmltag:blogger.com,1999:blog-4609238170931947864.post-6510772265000650266Tue, 01 Jun 2010 04:03:00 +00002010-07-01T02:38:11.877-07:00Lead Acid Battery ChargerBatteryHistory of Lead Acid BatteryThe lead-acid storage battery, an important energy storage device, is the most widely used secondary storage cell by automobile and other industries. Storage cells are devices which release a flow of electron through an external circuit as a result of reactions occurring between the active electrode materials and ions transported by the electrolyte. The cells in which http://feedproxy.google.com/~r/ElectronicsCircuits/~3/1zWqEtFHais/lead-acid-storage-battery.htmlnoreply@blogger.com (renlabs)1<p><a href="http://feedads.g.doubleclick.net/~a/EEXzcfDgNG7EwqsakJJ6PA0RIew/0/da"><img src="http://feedads.g.doubleclick.net/~a/EEXzcfDgNG7EwqsakJJ6PA0RIew/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/EEXzcfDgNG7EwqsakJJ6PA0RIew/1/da"><img src="http://feedads.g.doubleclick.net/~a/EEXzcfDgNG7EwqsakJJ6PA0RIew/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/1zWqEtFHais" height="1" width="1"/>http://electronics4everyone.blogspot.com/2010/05/lead-acid-storage-battery.htmltag:blogger.com,1999:blog-4609238170931947864.post-6820212094446907704Wed, 31 Mar 2010 04:44:00 +00002010-07-01T02:39:34.990-07:00Atmel ProgrammerMicrocontrollerIntroduction This ISP Programmer can be used either for in-system programming or as a stand-alone spi programmer for Atmel ISP programmable devices. The programming interface is compatible to STK200 ISP programmer hardware so the users of STK200 can also use the software which can program both the 8051 and AVR series devices. HardwareFigure 1 shows the circuit http://feedproxy.google.com/~r/ElectronicsCircuits/~3/uL5U7cF-u0w/isp-flash-microcontroller-programmer.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/5gwcPROMUPIET0iBPdDpkPoQ_js/0/da"><img src="http://feedads.g.doubleclick.net/~a/5gwcPROMUPIET0iBPdDpkPoQ_js/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/5gwcPROMUPIET0iBPdDpkPoQ_js/1/da"><img src="http://feedads.g.doubleclick.net/~a/5gwcPROMUPIET0iBPdDpkPoQ_js/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/uL5U7cF-u0w" height="1" width="1"/>http://electronics4everyone.blogspot.com/2010/03/isp-flash-microcontroller-programmer.htmltag:blogger.com,1999:blog-4609238170931947864.post-2171788554306685820Mon, 11 Jan 2010 09:15:00 +00002010-07-01T02:40:20.925-07:00MAX 2606FM TransmitterTransmitterSubscribe to Electronics Circuits by EmailHere’s a single chip FM transmitter circuit using Maxim semiconductors IC MAX2606. The MAX2606 is a compact, high-performance intermediate frequency VCO specially designed for wireless communication circuits. They have monolithic construction with low-noise and a low-power operation in a compact 6-pin SOT23 packing .Th1s low-noise IC feature an on-chip http://feedproxy.google.com/~r/ElectronicsCircuits/~3/rNPcejPoK1U/single-chipmax-2606-based-fm.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/IdeIBA0X5j0y4j2Fb4sm8sXDl1c/0/da"><img src="http://feedads.g.doubleclick.net/~a/IdeIBA0X5j0y4j2Fb4sm8sXDl1c/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/IdeIBA0X5j0y4j2Fb4sm8sXDl1c/1/da"><img src="http://feedads.g.doubleclick.net/~a/IdeIBA0X5j0y4j2Fb4sm8sXDl1c/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/rNPcejPoK1U" height="1" width="1"/>http://electronics4everyone.blogspot.com/2010/01/single-chipmax-2606-based-fm.htmltag:blogger.com,1999:blog-4609238170931947864.post-7560776599605323955Thu, 31 Dec 2009 08:58:00 +00002010-03-30T21:17:34.649-07:00TelephoneRFremote controllerDTMFHere is a circuit of a remote control unit which makes use of the radio frequency signals to control various electrical appliances. This remote control unit has 4 channels which can be easily extended to 12. This circuit differs from similar circuits in view of its simplicity and a totally different concept of generating the control signals. Usually remote control circuits make use of infrared http://feedproxy.google.com/~r/ElectronicsCircuits/~3/rexKKpQakJ0/radio-remote-control-using-dtmf.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/wxjXpIU-p0t4pk-MMLidIEsLKp8/0/da"><img src="http://feedads.g.doubleclick.net/~a/wxjXpIU-p0t4pk-MMLidIEsLKp8/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/wxjXpIU-p0t4pk-MMLidIEsLKp8/1/da"><img src="http://feedads.g.doubleclick.net/~a/wxjXpIU-p0t4pk-MMLidIEsLKp8/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/rexKKpQakJ0" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/12/radio-remote-control-using-dtmf.htmltag:blogger.com,1999:blog-4609238170931947864.post-4817045890496161717Tue, 01 Dec 2009 03:41:00 +00002009-11-30T19:45:21.676-08:00light and LEDChristmas StarChristmasSubscribe to Electronics Circuits by EmailHere is a low-cost circuit of Christmas star that can be easily constructed even by a novice. The main advantage of this circuit is that it doesn’t require any step-down transformer or ICs. Components like resistors R1 and R2.capacitors C1, C2, and C3, diodes D1 and D2, and zener ZD1 are used to develop a fairly steady 5V DC supply voltage that provides http://feedproxy.google.com/~r/ElectronicsCircuits/~3/IKj16uECfuE/mains-operate-christmas-star.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/-UsQW4UZSBgS6Yt4_YYWDjXGS6U/0/da"><img src="http://feedads.g.doubleclick.net/~a/-UsQW4UZSBgS6Yt4_YYWDjXGS6U/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/-UsQW4UZSBgS6Yt4_YYWDjXGS6U/1/da"><img src="http://feedads.g.doubleclick.net/~a/-UsQW4UZSBgS6Yt4_YYWDjXGS6U/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/IKj16uECfuE" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/11/mains-operate-christmas-star.htmltag:blogger.com,1999:blog-4609238170931947864.post-8337093327964991393Mon, 30 Nov 2009 12:10:00 +00002009-11-30T19:46:05.475-08:00light and LEDChristmas StarChristmasSubscribe to Electronics Circuits by EmailUsing light effects for decoration on festive occasions is a normal practice. Designers are coming up with varieties of electronic circuits to fill the imagination of users. Here is an easy-to-assemble circuit for christmas decoration as shown in Fig.1. It comprises four transistors, eighteen LEDs, a few resistors and two capacitors. Transistors T1 and http://feedproxy.google.com/~r/ElectronicsCircuits/~3/2-9nYrfmobA/led-lighting-for-christmas.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/qWrpn3LoWd3V_2ZfBWmC6UXpm44/0/da"><img src="http://feedads.g.doubleclick.net/~a/qWrpn3LoWd3V_2ZfBWmC6UXpm44/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/qWrpn3LoWd3V_2ZfBWmC6UXpm44/1/da"><img src="http://feedads.g.doubleclick.net/~a/qWrpn3LoWd3V_2ZfBWmC6UXpm44/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/2-9nYrfmobA" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/11/led-lighting-for-christmas.htmltag:blogger.com,1999:blog-4609238170931947864.post-2015345722067524648Wed, 28 Oct 2009 11:13:00 +00002009-10-28T04:16:49.212-07:00FM TransmitterTransmitterSubscribe to Electronics Circuits by EmailThis circuit is a circuit diagram fm transmitter. This circuit is somewhat different from the previous fm transmitter circuit. Transmitter circuit described here has the additional RF power amplifier stage, after the oscillator stage, to increase the power output of 200-250 milliwatts. With a good matching 50-ohm ground plane antenna or multi-element yagihttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/5oUmaEms5LM/long-range-fm-transmitter-circuit.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/Cw1uDuQsc5H2mNyvySbwsdjO8Jo/0/da"><img src="http://feedads.g.doubleclick.net/~a/Cw1uDuQsc5H2mNyvySbwsdjO8Jo/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/Cw1uDuQsc5H2mNyvySbwsdjO8Jo/1/da"><img src="http://feedads.g.doubleclick.net/~a/Cw1uDuQsc5H2mNyvySbwsdjO8Jo/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/5oUmaEms5LM" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/10/long-range-fm-transmitter-circuit.htmltag:blogger.com,1999:blog-4609238170931947864.post-7480110858045118957Wed, 28 Oct 2009 11:01:00 +00002009-10-28T04:07:34.310-07:00Power supplyInverterSubscribe to Electronics Circuits by Email This DC to AC inverter circuit work based on unstable multi vibrator does. In this circuit, IC CD4047 is chosen as a heart of unstable multi vibrator, because this IC type gives a complementary output that has opposite phase to another ( pin 10 and 11 as seen in Figure 1), and has 50 % duty cycle that satisfy to generate a pulse for http://feedproxy.google.com/~r/ElectronicsCircuits/~3/2l7JhocBaMQ/simple-dc-to-ac-inverter.htmlnoreply@blogger.com (renlabs)1<p><a href="http://feedads.g.doubleclick.net/~a/LqwXOAAIjer5u-GvZJ-WMANcUbo/0/da"><img src="http://feedads.g.doubleclick.net/~a/LqwXOAAIjer5u-GvZJ-WMANcUbo/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/LqwXOAAIjer5u-GvZJ-WMANcUbo/1/da"><img src="http://feedads.g.doubleclick.net/~a/LqwXOAAIjer5u-GvZJ-WMANcUbo/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/2l7JhocBaMQ" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/10/simple-dc-to-ac-inverter.htmltag:blogger.com,1999:blog-4609238170931947864.post-4194838748841896174Fri, 23 Oct 2009 11:46:00 +00002009-10-23T04:55:53.022-07:00Door Bell circuitsBuzzer CircuitsAudio circuitsParrot Sounding buzzer circuitsMusic CircuitsHere is a mains-operated doorbell that produces parrot-likesweet voice without requiring any musical IC. The circuit is cheap and easy to construct. The AC mains is fed to the circuit without using any step-down transformer.The complete circuit is shown in Fig. 1. The main components of the circuit are a resistor-capacitor network, transistor BC337 and audio output transformer X1. The oscillationhttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/bOv0eN5_fOc/parrot-sounding-ac-door-bell.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/xeUGSGUC3Bq_I6NZBujxB3Lr9sw/0/da"><img src="http://feedads.g.doubleclick.net/~a/xeUGSGUC3Bq_I6NZBujxB3Lr9sw/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/xeUGSGUC3Bq_I6NZBujxB3Lr9sw/1/da"><img src="http://feedads.g.doubleclick.net/~a/xeUGSGUC3Bq_I6NZBujxB3Lr9sw/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/bOv0eN5_fOc" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/10/parrot-sounding-ac-door-bell.htmltag:blogger.com,1999:blog-4609238170931947864.post-3350051494127558054Wed, 30 Sep 2009 05:40:00 +00002009-09-29T22:58:20.935-07:00AudioAudio power AmplifierSubscribe to Electronics Circuits by EmailThe Circuit present here is a 20Watts Car Stereo Amplifier. The main features of this powerful MULTIWATT® package (a trademark of SGS-THOMSON Microelectronics), a power amplifier IC chips designed specifically for car radio application, are the high current capability (3.5A) and the capability to drive a very low impedance (down to 1.6R). Here is the http://feedproxy.google.com/~r/ElectronicsCircuits/~3/tHbbMCHQ1LI/20-watts-rms-amplifier-using-tda2004.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/wioS4xTDJJYkvh75rzHGFiyXZBY/0/da"><img src="http://feedads.g.doubleclick.net/~a/wioS4xTDJJYkvh75rzHGFiyXZBY/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/wioS4xTDJJYkvh75rzHGFiyXZBY/1/da"><img src="http://feedads.g.doubleclick.net/~a/wioS4xTDJJYkvh75rzHGFiyXZBY/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/tHbbMCHQ1LI" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/09/20-watts-rms-amplifier-using-tda2004.htmltag:blogger.com,1999:blog-4609238170931947864.post-2967426024743847142Thu, 17 Sep 2009 03:40:00 +00002009-09-16T20:45:56.359-07:00Strobe LightStrobe lights are widely used by disco lovers to create wonderful visual effects in disco halls and auditoriam. The circuit of a battery operated portable miniature strobe light, which can be constructed using readily available inexpensive components, is described here. For convenience and simplicity, an ordinary neon lamp is used here in place of the conventional Xenon tube. The whole gadget canhttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/mS9hi8vViDc/strobe-light.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/znptaGymvHHjOWT8nHiPSsVOmf0/0/da"><img src="http://feedads.g.doubleclick.net/~a/znptaGymvHHjOWT8nHiPSsVOmf0/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/znptaGymvHHjOWT8nHiPSsVOmf0/1/da"><img src="http://feedads.g.doubleclick.net/~a/znptaGymvHHjOWT8nHiPSsVOmf0/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/mS9hi8vViDc" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/09/strobe-light.htmltag:blogger.com,1999:blog-4609238170931947864.post-962803378226300505Mon, 31 Aug 2009 09:18:00 +00002009-08-31T02:37:44.332-07:00Power supplyDC ConvertersThe selected switching topology is called a "push-pull" converter, because the transformer has a double primary (or a "centre-tapped" one, if your prefer). The centre tap is permanently connected to the car battery (via an LC filter to avoid creating peaks in the battery lines, which could affect other electronic equipment in the car). The two ends of the primary are connected to a pair of http://feedproxy.google.com/~r/ElectronicsCircuits/~3/O3g4Rj3H2GQ/sg3525-dc-converter-12v-to-35v-35v.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/ELQRc62JeyiT7szPWwL7ZsM_J4Q/0/da"><img src="http://feedads.g.doubleclick.net/~a/ELQRc62JeyiT7szPWwL7ZsM_J4Q/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/ELQRc62JeyiT7szPWwL7ZsM_J4Q/1/da"><img src="http://feedads.g.doubleclick.net/~a/ELQRc62JeyiT7szPWwL7ZsM_J4Q/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/O3g4Rj3H2GQ" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/08/sg3525-dc-converter-12v-to-35v-35v.htmltag:blogger.com,1999:blog-4609238170931947864.post-7162698627493869474Thu, 30 Jul 2009 09:02:00 +00002009-07-30T02:07:10.362-07:00Surround SoundAudioAmplifierIt is fun to make a variable space in your small room, but it’s hard to make the actuator to move your wall or room partition. Using analog audio line delay, you can adjust your room virtually. Just turn a knob in your audio set and you can adjust your room size. The circuit described here will make your dream come true, giving a feel that your speaker is located 15 meters behind you, even thoughhttp://feedproxy.google.com/~r/ElectronicsCircuits/~3/ZnZ2HM5xZVU/analog-audio-delay-line3d-sound.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/QI_L4z_9Ee4iS_ZEpHQyuJMgTR0/0/da"><img src="http://feedads.g.doubleclick.net/~a/QI_L4z_9Ee4iS_ZEpHQyuJMgTR0/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/QI_L4z_9Ee4iS_ZEpHQyuJMgTR0/1/da"><img src="http://feedads.g.doubleclick.net/~a/QI_L4z_9Ee4iS_ZEpHQyuJMgTR0/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/ZnZ2HM5xZVU" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/07/analog-audio-delay-line3d-sound.htmltag:blogger.com,1999:blog-4609238170931947864.post-8208452528287847328Fri, 03 Jul 2009 05:24:00 +00002009-07-02T22:26:03.960-07:00Heat Sensitive Switchon-off switchUsing a thermistor in the position shown makes a heat activated sensor. A change in temperature will alter the output of the op amp and energize the relay and light the LED. Swapping the position of the thermistor and 47k resistor makes a cold or frost alarm.http://feedproxy.google.com/~r/ElectronicsCircuits/~3/YKfF33gFIXQ/temperature-monitor.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/2_MKdWnBkLZgZKjdai9GAVeFDDA/0/da"><img src="http://feedads.g.doubleclick.net/~a/2_MKdWnBkLZgZKjdai9GAVeFDDA/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/2_MKdWnBkLZgZKjdai9GAVeFDDA/1/da"><img src="http://feedads.g.doubleclick.net/~a/2_MKdWnBkLZgZKjdai9GAVeFDDA/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/YKfF33gFIXQ" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/07/temperature-monitor.htmltag:blogger.com,1999:blog-4609238170931947864.post-907843771310898010Fri, 03 Jul 2009 05:22:00 +00002009-07-02T22:24:00.682-07:00sound Operated Switchon-off switchThis sensitive sound operated switch can be used with a dynamic microphone insert as above, or be used with an electric (ECM) microphone. If an ECM is used then R1 (shown dotted) will need to be included. A suitable value would be between 2.2k and 10kohms. The two BC109C transistors form an audio preamp, the gain of which is controlled by the 10k preset. The output is further amplified by a http://feedproxy.google.com/~r/ElectronicsCircuits/~3/3YFamIoHipg/sound-operated-switch.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/gQe6No7W12HdQQ3WOwKfkWYzfvI/0/da"><img src="http://feedads.g.doubleclick.net/~a/gQe6No7W12HdQQ3WOwKfkWYzfvI/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/gQe6No7W12HdQQ3WOwKfkWYzfvI/1/da"><img src="http://feedads.g.doubleclick.net/~a/gQe6No7W12HdQQ3WOwKfkWYzfvI/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/3YFamIoHipg" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/07/sound-operated-switch.htmltag:blogger.com,1999:blog-4609238170931947864.post-8837486460069968869Fri, 03 Jul 2009 05:19:00 +00002009-07-02T22:21:47.283-07:00Time Delaytimeron-off switchA switched timer for intervals of 5 to 30 minutes incremented in 5 minute steps. Simple to build, simple to make, nothing too complicated here. However you must use the CMOS type 555 timer designated the 7555, a normal 555 timer will not work here due to the resistor values. Also a low leakage type capacitor must be used for C1, and I would strongly suggest a Tantalum Bead type. Switch 3 adds an http://feedproxy.google.com/~r/ElectronicsCircuits/~3/tLESuZVAqD4/5-to-30-minute-timer.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/HZsGB8aKOH5LlRct2JseS4ZZWRw/0/da"><img src="http://feedads.g.doubleclick.net/~a/HZsGB8aKOH5LlRct2JseS4ZZWRw/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/HZsGB8aKOH5LlRct2JseS4ZZWRw/1/da"><img src="http://feedads.g.doubleclick.net/~a/HZsGB8aKOH5LlRct2JseS4ZZWRw/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/tLESuZVAqD4" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/07/5-to-30-minute-timer.htmltag:blogger.com,1999:blog-4609238170931947864.post-268048199642611816Fri, 03 Jul 2009 05:13:00 +00002009-07-02T22:14:16.882-07:00Audio mixerAudioThe mixer circuit below has 3 line inputs and 3 mic inputs. The mic inputs are suitable for low impedance 200-1000R dynamic microphones. An ECM or condenser mic can also be used, but must have bias applied via a series resistor. As with any mixer circuit, a slight loss is always introduced. The final summing amplifier has a gain of 2 or 6dB to overcome this. The Input line level should be around http://feedproxy.google.com/~r/ElectronicsCircuits/~3/yrLap0miCUM/6-input-mixer.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/hcN6wTegY_Umujti-WDL2wiQheE/0/da"><img src="http://feedads.g.doubleclick.net/~a/hcN6wTegY_Umujti-WDL2wiQheE/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/hcN6wTegY_Umujti-WDL2wiQheE/1/da"><img src="http://feedads.g.doubleclick.net/~a/hcN6wTegY_Umujti-WDL2wiQheE/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/yrLap0miCUM" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/07/6-input-mixer.htmltag:blogger.com,1999:blog-4609238170931947864.post-2805703977236275718Tue, 30 Jun 2009 12:18:00 +00002009-06-30T05:22:26.928-07:00VHF TransmitterTransmitterTV TransmitterHere's a simple video transmitter for VHF TV channel will accept baseband video input, hence it can be driven by most CCD cameras and VCR video outputs. It ouputs roughly 80mW and when used with a 40cm telescopic antenna over 100 metres range is possible.The transistor of the video transmitter can be a BC108, BC546, BC337 or a 2N2222. L1 is wound on a 10 mm air former. Use 6 turns 24 SWG for http://feedproxy.google.com/~r/ElectronicsCircuits/~3/RbWNV8Hrcw4/vhf-video-transmitter-60-200-mhz.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/hZRQ2763ea2zSx2RIAJKmQcOHAw/0/da"><img src="http://feedads.g.doubleclick.net/~a/hZRQ2763ea2zSx2RIAJKmQcOHAw/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/hZRQ2763ea2zSx2RIAJKmQcOHAw/1/da"><img src="http://feedads.g.doubleclick.net/~a/hZRQ2763ea2zSx2RIAJKmQcOHAw/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/RbWNV8Hrcw4" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/06/vhf-video-transmitter-60-200-mhz.htmltag:blogger.com,1999:blog-4609238170931947864.post-5043756897466041492Thu, 28 May 2009 08:42:00 +00002009-05-28T02:11:06.575-07:00AudioAmplifierAudio power AmplifierThis circuit is a 1 watt mono amplifier using the TDA 7052 from Philips. It is designed to be used as a building block in other projects where a battery powered audio amplifier is required to drive a small speaker. It will operate best from 6 – 12 V DC and requires no heatsink for normal use.Circuit Description :There are only 5 external components. C1 is the input coupling capacitor, which http://feedproxy.google.com/~r/ElectronicsCircuits/~3/yHhKWozjlVw/1w-mono-amplifier-with-ic-tda7052.htmlnoreply@blogger.com (renlabs)0<p><a href="http://feedads.g.doubleclick.net/~a/L9sEWpXYXFyMVMGEtxAt6GsmJA4/0/da"><img src="http://feedads.g.doubleclick.net/~a/L9sEWpXYXFyMVMGEtxAt6GsmJA4/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/L9sEWpXYXFyMVMGEtxAt6GsmJA4/1/da"><img src="http://feedads.g.doubleclick.net/~a/L9sEWpXYXFyMVMGEtxAt6GsmJA4/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/yHhKWozjlVw" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/05/1w-mono-amplifier-with-ic-tda7052.htmltag:blogger.com,1999:blog-4609238170931947864.post-7940402130772351218Fri, 24 Apr 2009 10:10:00 +00002009-10-15T23:43:25.641-07:00electronic mosquito repeller cd4047mosquito repellerUltrasonicHere is the circuit diagram of an ultrasonic mosquito repeller.The circuit is based on the theory that insects like mosquito can be repelled by using sound frequencies in the ultrasonic (above 20KHz) range.The circuit is nothing but a PLL IC CMOS 4047 wired as an oscillator working at 22KHz.A complementary symmetry amplifier consisting of four transistor is used to amplify the sound.The piezo http://feedproxy.google.com/~r/ElectronicsCircuits/~3/ADymRR4H80o/electronic-mosquito-repeller.htmlnoreply@blogger.com (renlabs)1<p><a href="http://feedads.g.doubleclick.net/~a/Bj9J87gIHHBqFjL6HiisNnSnoRc/0/da"><img src="http://feedads.g.doubleclick.net/~a/Bj9J87gIHHBqFjL6HiisNnSnoRc/0/di" border="0" ismap="true"></img></a><br/> <a href="http://feedads.g.doubleclick.net/~a/Bj9J87gIHHBqFjL6HiisNnSnoRc/1/da"><img src="http://feedads.g.doubleclick.net/~a/Bj9J87gIHHBqFjL6HiisNnSnoRc/1/di" border="0" ismap="true"></img></a></p><img src="http://feeds.feedburner.com/~r/ElectronicsCircuits/~4/ADymRR4H80o" height="1" width="1"/>http://electronics4everyone.blogspot.com/2009/04/electronic-mosquito-repeller.htmlen-usnonadult