What is the phase relationships between the input and output of signals of CE amplifier?
If it is a class A common emitter amplifier then the output signal will be an amplified inverted replica of the input signal. If it is a class B or class C common emitter amp then the output signal will be an amplified inverted replica of that portion of the input signal that is present during the part of the input cycle that the amplifier is conducting. It is commonly accepted that the output signal is 180 degrees out of phase with the input signal but in reality they both start and finish their cycle at the same time and are from the same origin so I am not sure you would be correct in saying that the output signal is 180 degrees out of phase with the input signal. I have been on both sides of this argument and do not wish to pursue it one way or the other. The unavoidable manufactured capacitance between the base and collector of the transistor allows some non inverting capacitive coupling of the input signal from base to collector. The signal Voltage that is coupled without inversi
