84. Elenco Radio Transistor Audio Amplifier - Theory of Operation

[@andreipopov350]

Thank you for all your hard work!! Please continue to do more!!!!

[@thozuduman8083]

Very educative, thank you. Please do more this kind videos.

[@williamhazelwood8288]

That schematic is triggering my OCD, otherwise good overview of operation. (although it is layout representative).

[@davidluther3408]

ITS TRIGGERING MY OCD EVEN WORSE!

[@vincei4252]

Another great presentation. Thank you!

[@winsrrow8125]

Why u draw the flow in the electrons direction instead of the more common conventional way? I mean, u draw from - to + but anyone else draw it from + to -

[@TheOffsetVolt]

It's the way many tech schools taught electronics, and many continue to do so. Universities teach conventional flow of course. Since the channel is for people new to the field like techs and hobbyists, I stuck with electron flow.

[@winsrrow8125]

@@TheOffsetVolt oh, ok, im learning the conventional at university, that's why I've asked, but really doesn't matter which one to use are essentially the same. I really appreciate ur videos, they are pretty well explained, more than my teacher's classes if i had to say.

[@rayanrayan4737]

Thank u so much MR 😊😊

[@wojciechbartczak3109]

I'm just wondering. Isn't that voltage-shunt feedback amplifier? Since I see here a feedback through R47. It would explain why the resistance is so high (470k). I would expect that the input is seeing around 2k input impedance. The whole schematic then is just a VAS (voltage amplification stage) and then current amplification stage (pull-push output). But, I might get this wrong, since feedback amplifiers is kind of Achilles' heel for me.

[@davidluther3408]

THE 26MV DROP INVOLVES USING DIFFERENTIAL CALCULUS ON THE SHOCKLEY DIODE EQUATION BY TAKING THE DERIVATIVE AND,PERFORMING ALGE BRIAC SUBSTUTIONS.FOR MOST OF US IT BETTER TO JUST ACCEPT THIS CONSTANT.

[@fantozzi30]

I just can't understand why resistors R50 and 51are in the path of the "100"uA current instead of "10"mA? When Transistors Q13 and Q14 overlap each other, there will be a direct unprotected short btw. Vdc and GND... Anyone??

[@enriquevarela8616]

great video ,thanks

[@electronicssciencebysherry5050]

Thank u so much Sir 4 me I need more videos on amplifiers please make me more

[@MrGuano11]

How can the NPN configuration conduct on the positive cycle? Wouldn't D5 just block the voltage from getting to Q11's base?

[@davidluther3408]

NO BECAUSE IT IS A CURRENT MIRROR.

[@bigbread9000000]

what is the purpose of D5?

[@davidluther3408]

IT IS CURRENT MIRROR.