CB and CE BJT amplifiers

[mehboob_iiui]

When I tried to simulate these amplifier ciruits, I get this waveform (see attached images)

has anyone had a similar problem, please tell me how can it be solved.

Added after 1 minutes:

here are the images, (archive)

 

[tyassin]

Hi

Have you tried to decrease your input voltage...is is quite high if you intend to use it as a small signal amplifier.

Regards

 

[the_edge]

There are fiew things... For both circuits you are using higher voltage than you should. For CE circuit A≈40dB, for CB A≈30dB. As you can see voltage on the output cannot bee greater than 2V, so voltage on the input cannot be greater than Vin<2/A... For CE it is 20mV, for CB≈60mV.
Also, CE has pole on about 3kHz, so input frequency must be greather than 3kHz. You aplied 1kHz. CB has pole around 100Hz so 1kHz is OK.