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0 votes
3 answers
1k views

Does the collector voltage have to be greater than the emitter voltage by few tenths of a volt for an NPN transitor

For an NPN transistor, does the collector voltage have to be greater than the emitter voltage by few tenths of a volt for it to be in active state? If yes what is the reason? Also it says greater by a ...
user31058's user avatar
  • 271
1 vote
2 answers
188 views

Transistor Amplifier Circuit (currents)

I have been studying transistor throughly this semester and I have always doubted this circuit schematic. First of all is this schematic correct? What about current directions are they conventional? I ...
Seraj's user avatar
  • 69
0 votes
3 answers
2k views

How exactly does a transistor amplify the input current in CE configuration

I have gone through tons of forum discussions and videos and books but they all explain in terms of mathematical equations that factor the input by a 'larger than 1' number. What happens physically ...
Blade's user avatar
  • 3
5 votes
6 answers
430 views

is any other technology than semiconductor transistors or vacuum tubes that can be used as active devices?

I am curious to know if one can amplify a signal or make nonlinear active distortion to an electric signal without semiconductor transistor or vacuum tube technologies?
behrad mahboobi's user avatar