Very low input impedance

Very high input impedance

Medium input impedance

Uniter

Provides positive feed back

Never reach saturation

Easily sets saturated

Gives maximum distortion

Class - A

Class - B

Class - AB

Class - C

Q point set slightly below cut-off

Quiescent current at mid point

Quiescent current beyond the cut-off point

Quiescent current over the cut-off value

Capacitance

Inductance

Capacitive reactance

Inductive reactance