Drain & Transfer Characteristics of Depletion-Type MOSFET

Analog Electronics: Drain & Transfer Characteristics of Depletion-Type MOSFET
Topics Discussed:
1. Drain or output characteristics of n-channel depletion-type MOSFET.
2. Maximum drain current of depletion-type MOSFET when gate to source voltage is zero.
3. Maximum drain current of JFET.
4. Transfer characteristics of n-channel depletion-type MOSFET.
5. Depletion-type MOSFET symbols.
6. Homework problem.
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[@MrJojija]

we call it enhancement mode in D-MOSFET, bcoz as positive Vgs applied through gate , the width of n channel between source and drain increases due to the flow of electron from p type substritute into n type channel. Hence drain current also increased due to the width of n-channel, thus the drain current enhances so we called it enhancement mode.

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and one feedback also please make video on op-amps :(
they are difficult

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[@nthumara6288]

yes cmos

[@saikumarkethepalli]

How will say that pinch off will occur at Vgs=-6V. Can You clearly explain about pinch off in the depletion mode

[@karanveersingh2171]

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Best explanation 👌

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[@yelbiar6956]

thank you, well explained

[@sabaanjum2813]

Why Vgs0 is called enhancement mode? Help me out in this.

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[@hashtagarts1663]

Thank you

[@nothj]

Thank you sir.

[@mpkdon]

its basically same as enhancement mosfet, only diff is enhancement conducts for some vt thresold, here vgs=0 can also do the same

[@YoungsProton]

Sir Please do a video on Op Amp ...

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[@boliviakollasuyo]

I'm very thankful for your lectures. Can you please explain how do we determine pinch off voltage ? Why is it equals to -6volts. This is at min 8:33
Thank you

[@bubunmazumder]

I think that was chosen randomly or I may be completely wrong..

[@heshamsalem7231]

you are right

[@swapnildesai5622]

selected randomly dude, Vp is depend on which mosfet u r using,just for understand he took it

[@krishnakumars4569]

It is given basically from Datasheets

[@shivamprakash6796]

thanks a lot🤗🙄

[@rahulsannigrahi8550]

Vgs should be equal to the threshold voltage for Id =0 not Vp

[@vijetasarswat9610]

Thanks sir

[@parthmodi4181]

ty sir we love u

[@eforengineering70]

Tnq....sir

[@useless1785]

Sir you mentioned that we cannot take vgs positive in jfet but sir in the book milliman's integrated electronics they have taken vgs positive in the graph...

[@ajinkya7959]

It's not taken positive because it results in forward biasing, so, extremely large amount of current can flow through it, thus causing damage to the fet.

[@eliosgreek8028]

Depletion type MOSFET characteristic is similar to JFET .

[@nitwstudent3255]

yes

[@tasnimgolwala4681]

thanks a ton!

[@soumyadeepdas8469]

is there any video on p channel enhanced mode mosfet ?

[@PardeepSingh-wj8lc]

Nice

[@alimovahedi7714]

How to access part one please.

[@akashkumarsingh640]

Sir p channel depletion type MOSFET

[@quantummusic2322]

Direction of current not understood sir!

[@RahulSharma-kz9lw]

can anybody tell what happen if vgs is open rather than vgs is 0 case?

[@deweshbhardwaj9962]

no baising to gate, neither forward nor reverse. hence no conduction in any case.

[@twilight7713]

positive gate-to-source voltage has “enhanced” the level of free carriers in the channel compared to that encountered with VGS = 0 V.For this reason the region of positive gate voltage on the drain or transfer characteristics is referred to as the enhancement region, with the region between cutoff and the saturation referred to as the depletion region as it depleted no. Of free electrons by recombination process.

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[@vikashs355]

dynks..........