What is transistor biasing

Transistor Biasing: Transistor biasing is the process of setting a transistors DC operating voltage or current conditions to the correct level so that any AC input signal can be amplified correctly by the transistor.

The basic conditions required for achieving faithful amplification of input signal in transistor amplifiers:

(i) Proper zero signal collector current: The value of zero signal current should be at least equal to the maximum collector current when the signal is present.

(ii) Proper minimum base emitter voltage: To achieve faithful amplification the base emitter voltage VBE should not fall below 0.5v for germanium and 0.7v for silicon transistors at any instant.