Simple Amplifier

284

05:35:07

Simple amplifier which amplifies signal using a transistor. Right now i am using a npn transistor with common emitter confrigration,whose base emitter circuit is forward bised by 3V battery and collector base circuit is reversed biased by using 2V battery. The amplified signal of 60Hz ac can be obtained at load resistance which is out of phase. Phase shift of 180°.

published 10 years ago

thebugger

10 years ago

Right now there is no amplification. No current gain nor voltage gain

raul_mufc

10 years ago

There's current and voltage gain. Noticeable by using the graph on the node before resistance (it just makes the graph more clear because in original the gap is very mild.)

thebugger

10 years ago

Nope sorry, no gain. Just a waste of power. Decrease the DC power supply to 1.39V and the signal source to 100mV and increase the 2V power supply to 10V and you'll see the gain. Now the transistor is saturated (Uceo<Ubeo). When the base voltage is higher than the collector voltage the transistor is saturated and doesn't work in the linear portion of its characteristic, thus has no gain

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