Monday, 4 December 2017

Complementary Class B push-pull power amplifier or transformerless power amplifier

Complementary Class B push-pull power amplifier
or
transformerless power amplifier

Class B push-pull amplifier uses 2 transfomer which make it bulky and costly .To avoid using transformer complementary symmetry class B is used

It consist of  NPN and PNP transistor >During positive  half cycle of input ,\(Q_1\) conducts and \(I_{c1}\) flows from \(V_{cc1}\) through \(R_L\) .During negative half cycle of input \(Q_2\) conducts and \(I_{c2}\) flows from \(V_{cc2}\) through \(R_L\) .Thus we get a complete amplified waveform of input across \(R_L\) MathJax example
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