How does a transistor amplify current?

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totorialman2019-12-22 10:55:56

Electronics

totorialman, 2019-12-22 10:55:56

How to control the current on the base, can I increase the current of the power supply?

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5 answer(s)

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SOTVM, 2019-12-22
@sotvm

How a TRANSISTOR works

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dimwap, 2019-12-23
@dimwap

Even when the transistor is fully open (even bipolar, even field-effect), it has resistance. This means that the current from the power source will be limited by Ohm's law.
wiki.amperka.ru/%D1%81%D1%85%D0%B5%D0%BC%D0%BE%D1%...

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Vladimir Korotenko, 2019-12-22
@firedragon

In general, no way. You can only control the current from 0 to I max
For bipolar, the gain is from ~30 - 200.

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Dmitry Ovsyannikov, 2019-12-22
@Quickly

A transistor is an ordinary key that emits a signal in the right direction for a given period of time. Therefore, amplifying the current with a transistor will not work. But with its help and a number of radio elements, you can "blind" what you need.

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VT100, 2020-01-22
@VT100

No way. Because in this formulation of the question we are talking about an efficiency greater than 1 (100%).