题目内容
The small alternating voltage is applied to the base-emitter circuit and causes large changes of base current which produce small changes in the collector current flowing through the load.
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For transistor action to take place the base-emitter junction must always be forward straight line.
When the base current increases, large proportionate increases occur in the collector current.
A decrease of base current causes a large increase of collector-emitter voltage.
The collector-emitter voltage may be regarded as an alternating voltage superimposed on a steady direct voltage.
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