Try the free interactive, multimedia tutorial. An amplifier consisting of two bipolar junction transistors with their collectors connected together and the emitter of one connected to the base of the other.
Circuit has an extremely high current gain and input impedance.
A graph representing all possible combinations of voltage and current for a given load resistor in an amplifier. DC offset The change in input voltage required to produce a zero output voltage when no signal is applied to an amplifier. Any source of DC power for electrical equipment. A frequency factor of ten. A portion of the output of an amplifier is inverted and connected back to the input.