[aksel]

A PC (Personal Computer) amplifier, also known as an audio amplifier, increases the power of a signal to drive a loudspeaker. It is an electrical circuit that has a lower input impedance compared to the input source and a higher output impedance compared to the load it is driving. This mismatch in impedances allows the amp to increase the signal power, thus making the sound louder.

The main components of a PC amplifier include:

1. Power Supply: This provides the necessary direct current (DC) voltage and current to the amplifier. It consists of a transformer, rectifier, and filter capacitors.

2. Pre amplifier Stage: This stage increases the small input signal to a level that is adequate for the power amplifier stage. It may include tone controls and a volume control.

3. Power Amplifier Stage: This stage delivers the final output signal to the loudspeaker.