Thank you very much.. These are not lectures but pure pleasure...

01:25 - Review of Lecture 19 06:54 - Bipolar Diff Pair - High-Frequency Circuit 13:55 - Bipolar Cascode Amplifier - High-Frequency Model 21:10 - High-Frequency Model of MOSFETs 29:15 - Example: CS Stage 31:35 - Example: CS Stage and P-Type Current Source Load 36:47 - Example; Source-Follower Stage with N-Type Current Source Load 42:38 - Example: CG Stage

Before watching these lectures I was always reluctant to solve circuits involving frequency response. Very excellent way of building concepts from simpler to complex circuits.

I am really happy to have you guys . No need for uni, schools, etc. Learn for free and have fun

DR, THANK YOU

Great Lecture.... Thanks Sir :)

Waiting eagerly for circuit theory I & II and the rest of the series.

Professor, could you examine the case of PN diode and how is junction capacitance modeled as parallel capacitance, and also how does that capacitor act with different frequencies (as the frequency increases the voltage on that capacitor cant change as fast, that is, it follows the input terminal better (acts as lower resistance), or in the case second terminal was grounded, it would draw higher and higher current in order to change its voltage)? I think it could come nicely, so as to have better understanding about capacitances. Thank you immensely, your work will help drive innovation for decades to come! I hope you make more and more video lectures (I was writing to you asking for Electronics 2 video a couple of years back and I was surprised in the best way when I saw you have made it).

lec20 starts at 6:52

Thank You

47:00 - Professor, when doing IC layout and routing bigger transistor matrices, inadvertently there will be made captive coupling between source and drain, does that mean we should by any cost try to lover it for cascode CG transistors, as to keep high-frequency characteristics?

Ty

I have a doubt ie. In the last example Cgs and Csb1 should be neglected because while calculating the poles we Short circuit the input voltage source l.

Professor, why don't we see capacitance between the collector and the emitter? I am asking as i have noted people saying that in IC, even if we separate transistors by putting them in different wells, what would form PNP junction, we still would have certain capacitance, or coupling across it; So why wouldn't we see the same in PNP transistor?

I don't understand how we can merge two capacitors connected to the same node on one side and to different grounds (one to absolute ground and the other to a.c. ground) on the other. Those two grounds can be at some non-zero potential with respect to each other, which means adding them directly might now be correct. Am I missing some basic thing here?

33:00

38:36 as i learnt from razavi Cgs must go from gate to source but in this example, i think razavi did a wrong thing he connected CGS from gate to GND

thank you sir

why Vb set to GND?