David Johns

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@theelectronicsengineeringt5805 Ай бұрын

Thank you Professor, it is very beneficial lecture.

@theelectronicsengineeringt5805 Ай бұрын

Thank you Professor. It was very well lecture. I hope your channel will grow drastically.

@noel3422 2 ай бұрын

Every miller theorom is explained in a different way, so the old college try, this one has "zed" who are you trying to teach? A university student or a guy trying to learn, kinda silly to try to teach a university student who is already tied up by all the math when it's not that complex and only so by the descriptions of a teacher who ony skips across the connect the dots because he is in a hurry and figures his students should already know all the different iderations of the confusing paths to understand the simple meaning, everyone needs better teachers.

@caleb7799 3 ай бұрын

too many smack their lips for no reason at all. not a pleasant sound

@sakshamrana9927 7 ай бұрын

Thankyou for the video.

@stefanopassiglia 8 ай бұрын

Amazing lecture and that finally justifies why the 4 feedback structures is almost always ignored when discussing circuit analysis for the professional world. Thanks!

@swellow5994 11 ай бұрын

great video!

@hasancetiner2460 Жыл бұрын

You are look like Muharrem İnce who is a Turkish politician :D

@SamirP Жыл бұрын

👌👍

@HaykDingchyan Жыл бұрын

What if we have inductors inside the circuit?

@davidjohns2582 Жыл бұрын

If there are inductors, capacitors and resistors, then this estimate will not work. The open/short circuit time-constant approach is valid for systems that have only real-axis poles and zeros. If inductors/capacitors/resistors are all in the system, then the system may have complex poles and zeros.

@kunnu_4 Жыл бұрын

14:36

@pruthviraaj7353 Жыл бұрын

At 10:01 isn't Vo connected to R4? How could you say Vo is zero??

@davidjohns2582 Жыл бұрын

The current through Vo is zero (not the voltage) since it is an open circuit.

@pruthviraaj7353 Жыл бұрын

@@davidjohns2582Oh yes, that makes more sense Thank you!

@davidjohns2582 Жыл бұрын

You are welcome. I should have made that more clear...@@pruthviraaj7353

@wxzhang3720 Жыл бұрын

great!

@mooseminddayan4650 Жыл бұрын

Very insightful. Thank you

@TimVT971 2 жыл бұрын

Thanks!

@smittyflufferson1299 2 жыл бұрын

Thank you for this. There are not many videos out there to help with my electronics class, this is great

@davidjohns2582 2 жыл бұрын

Thanks for the feedback. I am putting together a website that will have many more example problems with full solutions. I hope this will be useful as well.

@lilinfeng5437 2 жыл бұрын

Hi Professor, why is Vds inverse with Vgs?

@davidjohns2582 2 жыл бұрын

At what time in the video are you referring to?

@crosscutable 2 жыл бұрын

What would happen for amplification values greater than 1?

@anthonydoyle72 2 жыл бұрын

I believe you'd get negative which just represents current in the circuit flowing against the predicted way, aka feedback from Vout

@brucesdx1151 2 жыл бұрын

Thank you Professor Johns, I am a student at UBC. Your teaching helped me with my coursework!

@nabhay583 2 жыл бұрын

@21:32 how does vo going down, increase if?

@davidjohns2582 2 жыл бұрын

if v_neg is the voltage at the neg opamp input, then i_f = (v_neg - vo)/R_f where R_f is the feedback resistor. so i_f is proportional to negative vo

@nabhay583 2 жыл бұрын

@@davidjohns2582 Alright, got it, thank you! Great video btw ❤️

@fantanaideilor 2 жыл бұрын

I watched like 100 Times, still don't understand

@emreyigit4103 3 жыл бұрын

Great lecture sir. Very underrated.

@unstoppableguy7896 2 жыл бұрын

reis analog elektronik için nerden çalışabilirim önerin var mı

@emreyigit4103 2 жыл бұрын

@@unstoppableguy7896 knk pratiğini yapmadan asla anlayamayacağın bir şey. Hoca ya razaviden ya da sedra smithten anlatıp ordan soruyordur. Ödevleri bile bu iki kitaptan alıyorlar. iki kitaba da bak ders sylabbusundan falan anlarsın hangisinden anlattığını. Bu iki kitabın çözüm pdfini de bulursun. Sağdan soldan edindiğin bilgilerle kitaptaki çözümlü soruları çözmeye çalış. İlk başta çözemezsin zaten hatta hiçbir şey anlamazsın. Çözümleri falan oku. Hatta ezberle cevapları. Bazı soruları çözmenin raconu vardır mantıkla zor çözersin. Biraz ezber biraz mantıkla farklı soruları çözmeye başla. Baya bir zaman ayırırsan halledersin. Zamanın ve ingilizcen varsa razavinin videoları da çok iyidir. Şimdiden geçmiş olsun.

@fookyloh4995 3 жыл бұрын

Hi Prof Johns, great explanation on the 4 types of feedback. I wish I had you as my prof when I was at college. Your delivery of this difficult topic is clear and concise. I shall watching all your other videos. 👍👍👍👏👏👏

@malashis 3 жыл бұрын

In the triode region, some texts divide the total gate-oxide cap (WLC_OX) equally between source and drain.

@1.5Tvs3.0T 4 жыл бұрын

Thank you Dr. Johns for uploading these videos. They are very helpful.

@datadata3201 4 жыл бұрын

Where can we find this julia package? Thanks a lot.

@davidjohns2582 4 жыл бұрын

I have updated the description to give a github link.

@datadata3201 4 жыл бұрын

@@davidjohns2582 Great! Thanks a lot.

@JeffShi1 4 жыл бұрын

Great video Professor Johns! Thanks for posting them!

@ChaojianZhang 4 жыл бұрын

10:15 - Why is that short circuit current 1/(r_s + r_{OB})? Can you give me a breakdown of the analysis steps? 10:32 - Here we talk about "DC" gain, i.e. when frequency is zero, but I am just wondering since we are looking at the "small signal model" how can that apply to DC? Aren't we supposed to look at the DC circuit itself? Or do they happen to have the same impedances? 12:09 - I am just wondering why this diagram is not exactly the mid-band pass as we saw at the beginning of the lecture. Maybe it doesn't matter, but are there any connections? 12:33 - We had three capacitor/resistor pairs (aka. time constants) before, how come we choose Wp3 for this? 17:22 - The example asks about "total capacitance", are we simply talking about the sum of all capacitors?

@theelectronicsengineeringt5805 Ай бұрын

dc means, frequency near 0. When frequency is too near to f= 0,

@ChaojianZhang 4 жыл бұрын

27:22 I think the reason impedance here (output impedance?) is directly from PMOS SSM, rather than from "hand analysis simplified" model? 28:56 How that is a Common Drain? 30:48 How can you do top and bottom analysis separately instead of treating the whole circuit as a whole, like you did in 10:05? 31:59 I thought you said on 31:37 it's a CG not a CD? Why are we looking at a CD?

@davidliang1712 4 жыл бұрын

Can we replace that current source with a diode?

@ChaojianZhang 4 жыл бұрын

WOW, this is good!

@ChaojianZhang 4 жыл бұрын

Subscribed!

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