EEVblog #820 - Mesh & Nodal Circuit Analysis Tutorial

Dave explains the fundamental DC circuit theorems of Mesh Analysis, Nodal Analysis, and the Superposition Theorem, and how they can be used to analyse circuits using Kirchhoff's Voltage and Current Laws we learned in the previous video here:
The same circuit is solved using the 3 different methods. Will we get the same answer from each technique?

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[Educs]

Dave, as I used to be a professor in the past and a student for so many years, I can clearly see that you are a very talented teacher. We are all very lucky to live in this time that the internet allow people to share knowledge easily and even luckier to choose from the best of the best teachers out there. In my opinion you are one of the best I have came across. Please keep it up!

[garythecyclingnerd]

I paid $7, 500 in tuition + $750 in books this semester yet this video gave a better and more engaging explanation in a little over 40 minutes for free. Thanks for the video! You're teaching style is very good and even entertaining.

[smrtfasizmu]

I listened to my professor in middleschool explain this, I have listened to 2 professors in highschool explaining this, my dad explaining this to me, I have read explanation in highschool and middleschool physics books and I have never seen a better explanation than this one.

[davidalfonsomixfuentes]

Hi, Dave... it's a very nice tutorial. I'll tell you something... Here in Chile teachers spend a whole semester teaching this to the students. You made it in 2 short videos!!... I don't know much english but i really understand it more than all the teachers who was teaching me this things here and IN SPANISH. Finally, the most important thing is to make clear explanations like you do... You must post more fundamentals!!... I love those videos!!

Best regards.
David Mix

[fierymongoose]

If anyone is wondering how to solve the nodal equation at 9:00 without using decimal approximations, the method would be to multiply both sides of the equation by 60 (the lowest common denominator of 10, 20, and 30). This yields 6Va - 6 + 3Va + 2Va - 20 = 0, 11Va = 26, Va = 26/11 (~ 2.3636).

[cybernaut_ev]

Clear, easy-to-understand explanations. You put professional teachers to shame. Thank you.

[RTD]

Nicely done Dave. Students get confused about these analyses because educators don't use reasonable, consistent and intuitive conventions. All of those you adopt are clear and reasonable. You wouldn't believe the complete hash some 'experts' make of these explanations on Youtube. Your explanation of voltage multipliers is also excellent. Nice work.

[elitesennabubble]

the enthusiasm and energy you bake into these videos makes it so much easier to learn

[rtgfpop]

Since the world is ending, I've decided now is a great time to get back into electronics. Your videos are a great help, and I really wish I could send this video back 10 years into the past. Thanks Dave!

[USSEntrprise]

Mate. I was 3 weeks behind on circuit analays for my engineering class, what the teacher tried to do in 3 weeks, you did in 30 minutes. did all the homework in one day. thanks! :)

[yousef]

I’m now managing to work through these examples by myself and getting the correct answers. When I first saw this stuff a couple of years ago I thought it was quite an effort to learn and I’d just use a simulator instead. I can say now that even if I don’t ever use this stuff it’s given me a real idea of what’s going on in a circuit and things are starting to ‘click’. That definitely wouldn’t have been the case for me without learning this stuff so it really is well worth the effort. I draw up a schematic on paper then find all the voltages and currents then check it against a simulator to verify my answers, very satisfying when the answers match up. These videos are such a big help!

[ArifulIslam-qwlf]

Just started circuit analysis at school, and got a little frustrated with how my textbook approached everything. But this video did the trick. Massive thumbs up.

[MohamedAshraf-xrzw]

I would like to tell you that, you're the most TALENTED teacher or facilitator I've ever met in life !!
I was really upset because of my circuits course but after listening to your tutorial it becomes really EASY PEASY :)))
Thanks for your exerted efforts, keep moving forward, you're BRILLIANT (Y)

[hhislv]

Hi there. I would like to thank you for your videos and more specifically for your Friday's. Indeed, it's been two decades since I've put my head through this sort of thing and the refresher was more than welcomed.

[PeterCCamilleri]

Wow! Simple clear presentation. If only other educators were as interested in teaching. I suppose it goes to the core competency or rather incompetency.

[todarfclips]

Wow, looking back at my problems and figuring out what you did vs what my teacher did, your method is much simpler and saves a lot of skippable steps. It also reduces the amount of errors I make. I feel like my teacher thought he should explain everything from the very bottom but it's just too complicated in the end. Thanks !

[fyfoh]

Add me to the list of people who really needed Dave's explanations when I was an EE freshman.

[wejoji]

7yrs ago and still a big help for students who's struggling to learn this. Thank you

[cepwin]

I’m taking an online class on DC Circuits and really struggled with the mesh/ node analysis assignment...this video and the previous video are very helpful!! It also shows why you have to be so precise working the algebra....very easy to make a sign or calculation error and get a totally wrong answer.

[rjfontenotiii]

I've been trying to understand this stuff for two weeks now and after watching about a quarter of this video, it all clicks now. Perhaps I should send my tuition money to EEVblog because you are outdoing my university!