What is the basis of the ability of a transistor to amplify electrical signals?
October 24, 2020 | Education|
When the emitter pn junction is turned on in the forward direction, the emitter injects into the base a large number of minority carriers – holes. As a result, the resistance of the emitter junction turns out to be small. Therefore, with a small change in the base raised, due to a change in the amplified signal U, the current I of the emitter will change greatly due to the small resistance of the emitter junction.
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