Fet Amplifier Circuit Diagram. A common source amplifier drives a common gate amplifier in it. This fet preamplifier circuit is suitable for sending signals from the preamp to the amplifier circuit that uses long wiring.

Use 30v dc for powering the circuit. Ac analysis of fet circuits. In this case i0 q 0.

The tail supply is modeled as a current source i0 q having a parallel resistance rq.

Mosfet audio amplifier circuit diagram 10 watts mosfet amplifier notes. In the case of an ideal current source rq is an open circuit. Do not expect much performance from this amplifier. 11 14 has the output voltage developed across the source resistor.