transistor amplifier

Thread Starter

s.k.sundar

Joined May 22, 2010
4
i want to design a transistor amplifier.as seen in the attach ment when output is taken across collector and ground i got a output which is amplified for both cycles and produces a phase shift of 180 degree as it is common emitter.
but when i saw output across emitter and ground i got a output only for positive cycle and not for negative cycle.iam using a bypass capacitor but stil i get a output like this.
 

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Audioguru

Joined Dec 20, 2007
11,248
I already answered this question (on another website?).

The emitter bypass capacitor has its value much too small so for the 50Hz frequency it does almost nothing.
The waveforms are clipped because the transistor is wrongly biased so that it is cutoff some of the time.
 
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