Diode Equivalent Circuits

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13:30
p side high potential and n side low potential its forward bias
and vice versa

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[@Ma_ya_108]

Very nice explanation

[@mgarg1987]

Sir, Can you please tell the physical interpretation of resistance r_D? is it due to minor carrier charge flow i.e drift current? is the drift current and reverse saturation current same thing? is the diffusion current and I_majority same thing?

[@sathwika157]

Good explanation

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Thanks for giving a beautiful lecture about this topic
It helped a lot to get good marks in my exam
without this lecture, it would be hard to pass in this subject
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[@parthanayak1620]

In piece wise model question. Rd is Vd / Id. Why you did minus (0.8-0.7) /10-0 ?. Please reply

[@kiransubba1183]

R d is one by slope
And slope is (10-0)/(0.8-0.7)
Therefore r d is (0.8-0.7)/(10-0)

[@muhammadhammadsarwar698]

Amazing video but sir for piecewise linear model (or small signal model) you have missed a few points which are there in our book

[@syedahamed7334]

9:38 if diode resistance=0, then Vb is also 0 right? Then why are taking Vb as 0.7 or 0.3? I don't get. Plz someone explain.

[@komalpanchal9041]

as for the constant voltage drop we have made two assumptions, firstly we have to assume the linear curve instead of small non linearity and secondly we have to consider rd = 0, which is diode resistance, if diode resistance is zero that doesn't mean that Vb will be zero, Vb is constant for any type of diode. there will be sudden flow of electron, thats why the VI graph will be at 90 degree.

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Same problem .. please explain .

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[@Casper-bs2qz]

Is knee potential and barrier potential the same??

[@srikrishnikasramya5151]

I think they are same

[@education69420]

yes

[@DSPHPrashantMishra]

Sir reverse bias diode always have an open equivalent circuit??

[@shivaprajapati6742]

A lot of thanks sir

[@sayanchakraborty3114]

but at barrier potential we will get some current(reading) slightly more than 0(according to the graph also), then why we consider the current 0??

[@education69420]

It has already been assumed linear, that's why

[@hm2715]

Can someone help
Does Diode resistance depend upon Barrier potential???
Because as far as my knowledge Resistance do depen on biasing but Does it depend on barrier potential????

[@education69420]

Barrier potential would be the point upon exceeding which, electrons will move through the depleted region and current starts to flow (already explained in previous lectures). So yeah resistance does depend on barrier potential. Higher the barrier potential higher would be the resistance

[@ibrahimKhan-nl6of]

thanks sir

[@shivangisoni1852]

plz make videos on opamp plzzzz

[@shubhamparashar6077]

Sir can we get the pdf of these lectures?

[@poojaarakh1938]

in last lecture? when did u tell about ideal equivalant circuit??

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have you really donated or was you bluffing ??

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*were please fix your english...

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First earn

[@surajitgupta4559]

Sir don't understand the determination of rd from piecewise linear equivalent ckt

[@siddharthnevagi8370]

shouldn't the example of slope be y2-y1/x2-x1 ? (10-0)/(0.8-0.7) ?
somebody please explain

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you are right.

[@komalpanchal9041]

just apply ohm's law

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thnx sir

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Plz ac circuits

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Thanks sir