12.07.2015 Views

Transistor amplifiers aet 8 - NCATT

Transistor amplifiers aet 8 - NCATT

Transistor amplifiers aet 8 - NCATT

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TRANSISTOR AMPLIFIERSNPN Common Emitter Amplifier OperationThe positive alternation of the input signalapplied to the base causes forward bias toincrease and collector current to increaseThe voltage drop across R 3 increasesbecause I C increasedThe collector voltage (V C ) decreasesThe bias increase caused a decrease inoutput voltage and produced a 180 phaseinversion

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