Common Source voltage amplifier.

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02:42:28

The voltage divider resistance are used to bias the transistor in the "active" saturation region. The capacitors are for decoupling the DC that can come from the font (neither capacitors are needed in the simulator as all components are ideal).

Blue signal is the generated by the source, In this case it is a 200mV peak to peak voltage signal, the green signal has the DC component added thanks to the voltage divider. And the orange signal si the output of the amplifier. Note that a very big capacitor has been added to eliminate the DC component.

We have achieved a gain (Vout/Vin) of 3.44x

This is just a scholar example, the efficiency has not been taken in consideration and all elements are ideal.

published 1 year ago

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