:say what:

A Collection of Links: Through Fourth Year Electrical Engineering

2011-06-14T23:01:00.008-04:00

Links To Share

These links are listed in lexicographical order by subject (from C to wireless comm lab). There are three major sections (mathematics, chemistry, and physics) which contain the subordinate course or subsection links for each. Enjoy and share!

Chemistry

Lewis Structures

Circuits I

Circuits II

Communication Systems

Controls

Controls Lab

DSP/FPGA

Electric Machinery (Power)

Oxford University Press: Electric Machinery and Transformers: Hüseyin R. Hiziroglu

Electromagnetics

Electronics I

Electronics II

Electronics Lab

Linear Systems Analysis

Logic Design

Logic Lab

Mathematics

Calculus I

Calculus II

Calculus III

Differential Equations

Linear Algebra

Pre-Calculus

Prob/Stat

Proofs

Higher Education::How to Read and Do Proofs: An Introduction to Mathematical Thought Processes, 4th Edition

Misc

Microprocessor Lab

Microprocessors

Network Analysis

Physics

Mechanics

Electromagnetics

Semiconductors

Senior Design Project

WAMI

Wikipedia Articles Comparison of mobile phone standards - Wikipedia, the free encyclopedia Orthogonal frequency-division multiple access - Wikipedia, the free encyclopedia Wavelength division multiple access - Wikipedia, the free encyclopedia MIMO - Wikipedia, the free encyclopedia Duplex (telecommunications) - Wikipedia, the free encyclopedia iBurst - Wikipedia, the free encyclopedia Carrier sense multiple access with collision avoidance - Wikipedia, the free encyclopedia Signals Calculus Facts: Derivative of an Integral Orthogonal signals - All About Circuits Forum Euler's Equation and Applications FourierTransformPairs.pdf (application/pdf Object) euler.pdf (application/pdf Object) ma035.pdf (application/pdf Object) List of trigonometric identities - Wikipedia, the free encyclopedia Complex technology made real Lecture 5: Properties of Fourier Transforms — Free Online Course Materials — USU OpenCourseWare Hoffman(1997)_An_Introduction_to_Fourier_Theory.pdf (application/pdf Object) ft.pdf (application/pdf Object) Resonance and Quality Factor Phase-locked loop - Wikipedia, the free encyclopedia Stanford University - Professor John M. Cioffi Modulation Relations between cosine, sine and exponential functions Correction To Heat Equation Discussion | Stanford Mathematics Lecture LR High-pass Filter Design Tool Fourier transform - Wikipedia, the free encyclopedia

Wireless Comm Lab

The End of My Free Music Posts

2011-06-11T10:25:00.000-04:00

I really enjoyed writing the python script that created all of my Free Music posts. However, even though I still think it's really cool, I am not going to post the links anymore.

I thank you if you actually ever used them. It's now time to come up with something else! ;)

Free Music

2011-03-14T22:22:00.000-04:00

As usual, please read the disclaimer before ya get to clickin'!

Here are the links to free music from the top 40 artists played on Sirius XM's Alt Nation over the past week:

:artist: __Arcade Fire__

:artist: __Muse__

:artist: __Two Door Cinema Club__

:artist: __Kings Of Leon__

:artist: __Black Keys__

:artist: __Phoenix__

:artist: __Death Cab For Cutie__

:artist: __Vampire Weekend__

:artist: __Cage The Elephant__

:artist: __Mumford & Sons__

:artist: __Foo Fighters__

:artist: __Weezer__

:artist: __Jimmy Eat World__

:artist: __Killers__

:artist: __Foster The People__

:artist: __Radiohead__

:artist: __My Chemical Romance__

:artist: __Strokes__

:artist: __Franz Ferdinand__

:artist: __Incubus__

:artist: __Silversun Pickups__

:artist: __Middle Class Rut__

:artist: __Naked and Famous__

:artist: __AFI__

:artist: __Gorillaz__

:artist: __Rise Against__

:artist: __Green Day__

:artist: __Metric__

:artist: __Matt & Kim__

:artist: __Bravery__

:artist: __Airborne Toxic Event__

:artist: __A Silent Film__

:artist: __XX__

:artist: __White Stripes__

:artist: __Awolnation__

:artist: __Limousines__

:artist: __Sleigh Bells__

:artist: __Beck__

:artist: __Broken Bells__

:artist: __Temper Trap__

:artist: __blink182__

:artist: __Smashing Pumpkins__

:artist: __Gregg Michael Gillis__

:artist: __girl talk__

Pi to T and T to Pi Transformations (et alii)

2011-03-11T22:32:00.001-05:00

Here is some valuable information! Our professor asked us to derive the transformations for each of the impedance, admittance, hybrid, and transmission parameters. He also asked us to derive the transformations going from T (Wye) to Pi (delta) and vice versa. My buddy gave his to me to post here; they look way better than mine. His name is Leandro Hormaza and he's a pretty smart dude.

CLICK TO ENLARGE


Y to H and H to Y

H to z and z to H

H to T and T to H

T to Y and Y to T

z to T and T to z

Y to z and z to Y

T to Pi

T to Pi cont.

Pi to T

Pi to T cont.

Free Music

2011-02-26T21:14:00.000-05:00

:artist: __Two Door Cinema Club__

:artist: __Muse__

:artist: __Jimmy Eat World__

:artist: __Black Keys__

:artist: __Kings Of Leon__

:artist: __Cage The Elephant__

:artist: __Death Cab For Cutie__

:artist: __Phoenix__

:artist: __Mumford & Sons__

:artist: __Killers__

:artist: __Weezer__

:artist: __My Chemical Romance__

:artist: __Vampire Weekend__

:artist: __Matt & Kim__

:artist: __Silversun Pickups__

:artist: __Strokes__

:artist: __Foster The People__

:artist: __Airborne Toxic Event__

:artist: __Foo Fighters__

:artist: __Radiohead__

:artist: __Young the Giant__

:artist: __Franz Ferdinand__

:artist: __Sleigh Bells__

:artist: __Rise Against__

:artist: __Gorillaz__

:artist: __Green Day__

:artist: __XX__

:artist: __Beck__

:artist: __White Stripes__

:artist: __MGMT__

:artist: __AFI__

:artist: __Incubus__

:artist: __Temper Trap__

:artist: __Cold War Kids__

:artist: __Queens Of The Stone Age__

:artist: __Local Natives__

:artist: __Fitz & The Tantrums__

:artist: __Metric__

:artist: __blink182__

:artist: __Smashing Pumpkins__

:artist: __Gregg Michael Gillis__

:artist: __girl talk__

How to Make a Damped Sinusoidal Source in PSPICE

2011-02-26T14:14:00.000-05:00

So, I have been trying to verify my work recently...since I am now in the realm where solutions manuals are sparse and most problems are the product of a 30 year professor's imagination.

With that, I had a network that had a damped sinusoidal source and I wanted to verify my calculations. What to do?

Select the VSIN source from the SOURCE library
Select the source (it should turn pink)
Right click and select Edit Properties (or you could just double click the source)
There are a few parameters you should be concerned with: DF, FREQ, PHASE, and VAMPL.
If you're source looks like A*e^-Ct*cos(wt + phi) then you can update these values in the Property Editor:
DF = C (don't put a negative, PSPICE assumes that the "damping factor" is the coefficient of the "e" exponent)
VAMPL = A
FREQ = w/(2*pi)
PHASE = phi +/- 90 (if your source is a cosine)
DONE!

Now, you may have some other parameters that you need to update and that's fine. This post isn't meant to be a tell all for sources. However, the golden nugget of information is the DF parameter in the VSIN source. If you have a better or alternative way then please leave a comment.

Free Music

2011-02-19T09:59:00.001-05:00

:artist: __Muse__

:artist: __Jimmy Eat World__

:artist: __Black Keys__

:artist: __Arcade Fire__

:artist: __Two Door Cinema Club__

:artist: __My Chemical Romance__

:artist: __Death Cab For Cutie__

:artist: __Weezer__

:artist: __Foster The People__

:artist: __Mumford & Sons__

:artist: __Vampire Weekend__

:artist: __Killers__

:artist: __Phoenix__

:artist: __Silversun Pickups__

:artist: __Cage The Elephant__

:artist: __Matt & Kim__

:artist: __Strokes__

:artist: __Foo Fighters__

:artist: __Franz Ferdinand__

:artist: __Incubus__

:artist: __Green Day__

:artist: __Bravery__

:artist: __Broken Bells__

:artist: __Airborne Toxic Event__

:artist: __Sleigh Bells__

:artist: __Beck__

:artist: __XX__

:artist: __Young the Giant__

:artist: __Gorillaz__

:artist: __Limousines__

:artist: __Metric__

:artist: __Cold War Kids__

:artist: __White Stripes__

:artist: __AFI__

:artist: __Middle Class Rut__

:artist: __Paper Tongues__

:artist: __New Politics__

:artist: __Temper Trap__

:artist: __MONA__

:artist: __blink182__

:artist: __Smashing Pumpkins__

:artist: __Gregg Michael Gillis__

:artist: __girl talk__

NetBeans Error

2011-02-19T00:40:00.000-05:00

So, I recently got the nerve up to actually "get" Java. I have done some development while working through Teach Yourself Java in 24 Hours. ...but that was all in a Linux environment. So, I tried developing using the Netbeans IDE. I was using Eclipse. I figured that I would spread the love to see what works best with me. Here's the juice: I click the little green arrow to compile my class and here is what I get-->

What did I do to fix it? I just right clicked the class and left clicked `run file'. I guess you have to point to a main class for the little green arrow to work. What up with that?

Input Resistance and Open Circuit Gain for Common Bipolar Junction Transistors

2011-02-10T00:37:00.011-05:00

Here are some hybrid-pi models that demonstrate the small signal analysis of the common BJT configurations. These equations are universal and can be applied to any resistor/capacitor scheme. They can also be applied directly to MOSFETs. Just replace Rc=Rd, Rb=Rg, Re=Rs, and Rpi=infinity. Boom.

CLICK TO ENLARGE

Free Music

2011-02-06T10:12:00.000-05:00

As usual, please read the disclaimer before ya get to clickin'!

Here are the top 40 artists played on Sirius XM's Alt Nation over the past week:

:artist: __Kings Of Leon__

:artist: __Jimmy Eat World__

:artist: __Muse__

:artist: __Cage The Elephant__

:artist: __Arcade Fire__

:artist: __Black Keys__

:artist: __Silversun Pickups__

:artist: __Phoenix__

:artist: __Temper Trap__

:artist: __Two Door Cinema Club__

:artist: __Vampire Weekend__

:artist: __Mumford & Sons__

:artist: __My Chemical Romance__

:artist: __Broken Bells__

:artist: __Foster The People__

:artist: __Killers__

:artist: __Metric__

:artist: __Weezer__

:artist: __Death Cab For Cutie__

:artist: __Matt & Kim__

:artist: __Incubus__

:artist: __Limousines__

:artist: __Foo Fighters__

:artist: __New Politics__

:artist: __Rise Against__

:artist: __Airborne Toxic Event__

:artist: __Franz Ferdinand__

:artist: __Fences__

:artist: __XX__

:artist: __Middle Class Rut__

:artist: __Local Natives__

:artist: __Naked and Famous__

:artist: __Gorillaz__

:artist: __Ra Ra Riot__

:artist: __White Stripes__

:artist: __Yeah Yeah Yeahs__

:artist: __Sleigh Bells__

:artist: __Bravery__

:artist: __Hives__

:artist: __Young the Giant__

:artist: __blink182__

:artist: __Smashing Pumpkins__

:artist: __Gregg Michael Gillis__

:artist: __girl talk__

Free Music

2011-01-30T11:26:00.001-05:00

As usual, please read the disclaimer before ya get to clickin'!

Here are the top 40 artists played on Sirius XM's Alt Nation over the past week:

:artist: __Jimmy Eat World__

:artist: __Kings Of Leon__

:artist: __Muse__

:artist: __Silversun Pickups__

:artist: __Cage The Elephant__

:artist: __Arcade Fire__

:artist: __Death Cab For Cutie__

:artist: __My Chemical Romance__

:artist: __Foster The People__

:artist: __Temper Trap__

:artist: __Killers__

:artist: __Broken Bells__

:artist: __Matt & Kim__

:artist: __Mumford & Sons__

:artist: __Two Door Cinema Club__

:artist: __Black Keys__

:artist: __Limousines__

:artist: __Weezer__

:artist: __Foo Fighters__

:artist: __Phoenix__

:artist: __Vampire Weekend__

:artist: __Incubus__

:artist: __Franz Ferdinand__

:artist: __XX__

:artist: __Fences__

:artist: __Bravery__

:artist: __Middle Class Rut__

:artist: __AFI__

:artist: __Passion Pit__

:artist: __Metric__

:artist: __Graffiti__

:artist: __New Politics__

:artist: __Gorillaz__

:artist: __Ra Ra Riot__

:artist: __Sleigh Bells__

:artist: __Young the Giant__

:artist: __Local Natives__

:artist: __Kaiser Chiefs__

:artist: __Naked and Famous__

:artist: __MGMT__

:artist: __blink182__

:artist: __Smashing Pumpkins__

:artist: __Gregg Michael Gillis__

:artist: __girl talk__

Free Music

2011-01-15T10:38:00.000-05:00

Free Music

2011-01-10T19:42:00.000-05:00

Free Music

2010-11-05T20:51:00.000-04:00

How to Determine MOSFET Type from Circuit Symbol

2010-11-02T12:15:00.004-04:00

I have noticed that my book does not present an easy way to quickly tell the difference between a) different types of MOSFETs and b) different MOSFET circuit configurations. So let's work it out.

First, let's note that there are two types of MOSFETs.

Fig 1. N-channel MOSFET

Fig 2. P-channel MOSFET

Okay, this is the easy part. We know that when we have a p-type substrate with n-type source and drain regions, we get an n-channel MOSFET. The opposite is true for a p-channel MOSFET. Now, how about the circuit symbols?

So, we have a gate, source, drain, and body connection (the body is normally shorted to either the source or the drain, most commonly the source). Then we have that little arrow... What's up with that?

Fig 3. MOSFET (body shorted to source)

In figure 3, the arrow is pointing toward the gate.

Here are some possibilities...

Fig 4. Three circuit symbols for an n-channel MOSFET

(a) is the circuit symbol for an n-channel enhancement-type MOSFET
(b) is the circuit symbol for an n-channel MOSFET (with body pin shown)
(c) is the circuit symbol for an n-channel MOSFET (with out the body pin shown)

Differences?

If the body pin is shorted to the source or if the body pin does not affect the operation of the MOSFET, it is left out. But wait, in (a), the arrow points toward the gate and in the other two, it points away from the gate!

I have to dig back into what I learned before and recall. We define that polarity is positive if current flows INTO the positive terminal and out of the negative terminal. I therefore make my first assumption. The arrow indicates the polarity of the device, with respect to the gate. This must mean that when the device is on, there is a positive gate voltage, creating an n-channel! Woohoo.

I will say that, almost all of the simple circuits I have seen use (c) as the symbol for the n-channel MOSFET. Just to clarify, the circuit in (a) does not show that the body and source pins are usually shorted together. When the body pin and the source pin are shorted together, the arrow can change direction if placed over the source pin. Otherwise, if the body pin is shorted to the source pin, (a) and (c) are equivalent.

So, there we have it. If the arrow is pointing away from the gate, that means that the device is on when there is a positive gate voltage, creating an n-channel. If the arrow is pointing toward the gate, that means that the device is on when there is a negative gate voltage, creating a p-channel.

Fig 5. N-channel MOSFET (notice V_sb = 0 implies B shorted to S)

Fig 6. P-channel MOSFET (same note as above)

Keep in mind that I spoke very loosely about the device being on. When I said that, I assume that the appropriate thresholds have been met (i.e. V_gs > V_t for an n-channel).

I hope this helps. It helped me!

[all images retrieved via Google images or Microelectronic Circuits, Sedra/Smith, 6th]

Free Music

2010-10-23T20:42:00.000-04:00

Advice for Engineering Students [not so humble]

2010-09-10T21:10:00.004-04:00

I am an electrical engineering student at the University of South Florida. I am also a husband, a father, and an employee of an engineering firm.

Here is some advice from me, take it for what it is:

-put the time in! You are not a genius (neither am I), otherwise, you wouldn't be reading this post and I wouldn't be sharing it. Too often, I see my classmates wondering why they don't pass (even me, once). If you don't spend time with the material, you won't master it. Period.

-share information. Half the battle of getting through is knowing what to expect.

-save your math and science books and notes --you WILL need them

-save your "technical" English textbooks, too --you will need them SOMEDAY

-make sure that you have an innate curiosity about how things work; better yet, make sure that you have a desire to KNOW how things work

-be organized

-manage your time wisely; that's right when all of your friends are going out and having a good time, your ass better be at "home" studying

-consult with other engineering students about a proper course sequence; you may have the pre-requisite satisfied but there might be a lot of concepts you won't get

-USE THE TA; that's what they are there for, abuse the hell out of them

-join an engineering club; even if you don't participate at least you will have the opportunity if something strikes your fancy (if you don't join, you won't know what's going on)

-get a white board to work something out if you are having problems

-throw your graphing calculator away, you don't need it anymore

[this post is linked to reddit and my page views have gone through the roof! thanks for that! but then I read the comments and some are complaining about this statement. well, I am sticking to it. your graphing calculator is a crutch. I was never allowed to use one on an exam after the pre-reqs for my major. honestly, I feel a lot better about my school now that I know a lot of other schools do allow them. on a more serious note, if you are going to be a serious engineer, I don't think you need your TI-8X. there are myriad other tools that are much easier to use and integrate well with tools that are freely available (e.g. Octave, Open Office, Wolfram-Alpha, Python). however, if you are so stuck on your graphing calculator then you are just proving my point.]

-pay attention in your programming class; many engineering students are under the impression that all they will be doing is crunching numbers and drawing things all day -- no, you will most likely be punching code into a computer -- get used to it

-examine your professors on a rating website (e.g. ratemyprofessor.com); there could be a lot of useful information there

-READ and understand the syllabus; it's the prof's contract with you

-take online classes if you can; it gives you the freedom to use your time the way you see fit -- what's your time worth?

[you can always go to class too and have access to the lectures while you are working out the material]

-work on developing your approach to solving a problem. If something doesn't seem correct while your working a problem or your results are ridiculous, go back and evaluate where you could have made a mistake or start all over. More often than not, you are graded on your approach, not necessarily the correct answer. When you land that engineering job, you don't really "know" what the correct answer is. However, you will have to know where to start and what method to use to solve that problem.

-when working problems, use one side of the paper and layout all of the sheets in front of you as you go along. This helps with the previous statement.

-[electrical engineering] by the time you get to the point that you are designing your own circuits, think about the values of the resistors you use. Try to keep your resistor values in the kilo-Ohm range. Most of the time, this is easy to do because there is some other component that you can scale to make your resistor value larger. I say this because, often, when you are working with active devices, they require a decent size bias point. Because of this, when you use a small resistance (especially in parallel with a larger resistance), you will short circuit with the small resistor (e.g. instead of 20 ohm and 50 ohm, try 2k and 5k).

-when you get your interview, try to work in topics that you are very excited about. It's much easier to talk about something you are passionate about and that makes your personality shine through.

-more to follow...

Free Music

2010-09-04T18:10:00.000-04:00

Free Music

2010-08-10T23:34:00.003-04:00

Free Music

2010-07-05T10:14:00.001-04:00

Complex Arithmetic on the TI-89 Titanium® (phasor practice)

2010-07-01T23:10:00.011-04:00

This blog will show you how to add, subtract, multiply, and divide complex numbers in both polar and rectangular form.

Before we proceed with the calculator, let's make sure we know what's going on. If you need to brush up, here is a fantastic link. Also, note that the complex conjugates are:

A* = 2.5 - (-)j3.8 = 2.5 + j3.8 and C* = 4.1<-48°.

Let's say we have four equations of complex numbers. Two are in rectangular form and two are in polar form.

A = 2.5 - j3.8 B = -1.7 + j2.3 C = 4.1 <48° D = 2.5 <-6°

Now, to start, you must also know that a) you cannot multiply or divide complex coordinates in rectangular form and b) you cannot add or subtract complex coordinates in polar form directly--that's what your calculator is for you big dummy!
___________________________________________________
For this section we will give our answers in rectangular form.

Express C in rectangular form: C = 2.74 + j3.05

On your calculator:

NOTE

We set the mode to the form that we want our answers in FIRST.

Set up your environment:

[MODE] >> [scroll down to 'Complex Format'] >> [right arrow ('>')] >> [scroll to 'RECTANGULAR' and press enter OR press 2] >> [enter]
[MODE] >> [scroll down to 'Angle'] >> [right arrow ('>')] >> [scroll to 'DEGREE' and press enter OR press 2] >> [enter]

If not at your home screen, press [HOME]
Enter:

NOTE

(make the '<' by pressing [2ND] >> [EE])

(4.1<48) [enter]

___________________________________________________
For this section we will give our answers in polar form.

Express A in polar form: A = 4.5 <-56.7°

On your calculator:

NOTE

We set the mode to the form that we want our answers in FIRST.

Set up your environment:

[MODE] >> [scroll down to 'Complex Format'] >> [right arrow ('>')] >> [scroll to 'POLAR' and press enter OR press 3] >> [enter]
[MODE] >> [scroll down to 'Angle'] >> [right arrow ('>')] >> [scroll to 'DEGREE' and press enter OR press 2] >> [enter]

If not at your home screen, press [HOME]
Enter:

NOTE

(make the i by pressing [2ND] >> [CATALOG])

2.5 - i3.8 [enter]

___________________________________________________
Now, if you can convert polar form to rectangular form and vice versa, you are in good shape!

Obviously, I can't go through each permutation for you (that would be 32 different combinations). So, I will show an addition problem and a multiplication problem.
___________________________________________________
For this section we will add two expressions in polar form and express the answer in rectangular form.

C + D = 4.1<48° + 2.5<-6°

On your calculator (assuming you followed along up above, I will just bust out the steps in a direct format, omit steps as you see fit):

[MODE] >> [scroll down to 'Complex Format'] >> [right arrow ('>')] >> [scroll to 'RECTANGULAR' and press enter OR press 2] >> [enter]
[MODE] >> [scroll down to 'Angle'] >> [right arrow ('>')] >> [scroll to 'DEGREE' and press enter OR press 2] >> [enter]
(4.1<48) + ( 2.5<-6) [enter]
answer: 5.2 + j2.8

___________________________________________________
For this section we will multiply two expressions in rectangular form and express the answer in polar form.

A * B = 2.5 - j3.8 * -1.7 + j2.3

On your calculator:

[MODE] >> [scroll down to 'Complex Format'] >> [right arrow ('>')] >> [scroll to 'POLAR' and press enter OR press 3] >> [enter]
[MODE] >> [scroll down to 'Angle'] >> [right arrow ('>')] >> [scroll to 'DEGREE' and press enter OR press 2] >> [enter]
2.5 - i3.8 * -1.7 + i2.3
answer: 9.1<74.1°

___________________________________________________

Notes:

polar coordinates must have parenthesis around them (i.e. '(3.4<45)' )
You can also use the menus to convert rectangular coordinates to polar coordinates and vice versa:
(3.4<45) [2ND] [5] [scroll to 'MATRIX' and press right arrow or press 4] [scroll to Vector ops and press right arrow] [scroll to 'arrow' Rect] [enter]
answer: 3.4 + j.3
setting up your environment in the beginning because you know what form you want your answer in helps out a lot
You can also convert those nasty trigonometric values into real numbers by simply multiplying your answer by 1.0 (e.g. ans*1.0)
Here is a link to the dummies books for more info.
Also, note the order of operations for your calc. If you have to multiply a bunch of stuff and divide it by something, don't waste time with the parenthesis. The TI-89 will multiply first and then divide.
Another neat trick. Say you are looking to get the magnitude of a vector in polar coordinates to use in your next calculation (e.g. the vector 25<-43.0). You can grab the absolute value of the vector (if ans = 25<-43.0) by hitting:

[2nd] [5]
[right arrow]
[abs(]
[2nd] [(-)] (this should give you abs(ans()) = 25)

Enjoy!

Free Music

2010-06-29T15:56:00.000-04:00

Free Music

2010-06-20T23:17:00.000-04:00

Free Music

2010-06-13T10:56:00.000-04:00

Free Music

2010-05-27T20:02:00.000-04:00

:say what:

A Collection of Links: Through Fourth Year Electrical Engineering

Communication Systems

Controls

Controls Lab

Linear Systems Analysis

Senior Design Project

WAMI

Wikipedia Articles

Wireless Comm Lab

The End of My Free Music Posts

Free Music

Pi to T and T to Pi Transformations (et alii)

Free Music

How to Make a Damped Sinusoidal Source in PSPICE

Free Music

NetBeans Error

Input Resistance and Open Circuit Gain for Common Bipolar Junction Transistors

Free Music

Free Music

Free Music

Free Music

Free Music

How to Determine MOSFET Type from Circuit Symbol

Free Music

Advice for Engineering Students [not so humble]

Free Music

Free Music

Free Music

Complex Arithmetic on the TI-89 Titanium® (phasor practice)

Free Music

Free Music

Free Music

Free Music