- #1
Steve Collins
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I’m in the process of writing a lab report after testing a cascaded common-emitter amp. The second transistor input is the collector output (collector to base) which I understand to be an emitter follower?
I have used PSPICE to measure the gain when a 20mV signal is applied and I have measured the resulting output peak-to-peak voltage to be a maximum of 2.2V which gives a gain of 40.8dB.
I have plotted the frequency response (20log(output/input)) using PSPICE and I’m getting a midband gain of around 43dB, which would mean an output of around 2.8V which is well over what I have read from the output signal plot.
The bottom of the output signal seems to be clipped and I was wondering if this could have anything to do with the results not matching up?
I have used PSPICE to measure the gain when a 20mV signal is applied and I have measured the resulting output peak-to-peak voltage to be a maximum of 2.2V which gives a gain of 40.8dB.
I have plotted the frequency response (20log(output/input)) using PSPICE and I’m getting a midband gain of around 43dB, which would mean an output of around 2.8V which is well over what I have read from the output signal plot.
The bottom of the output signal seems to be clipped and I was wondering if this could have anything to do with the results not matching up?