Common-Emitter Amplifier Simulation

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Struct.

Simulation result
For the requested common-emitter amplifier using a 2N2222, the simulated collector output over 5 ms is:
Image

Image

Key results

MetricValue
Input signal10 mV peak, 1 kHz
Collector DC level48.9 mV
Collector average over 2 to 5 ms50.69 mV
Collector minimum41.58 mV
Collector maximum63.37 mV
Collector peak-to-peak swing21.79 mV
Input peak-to-peak swing20.00 mV
Voltage gain-1.09 V/V
Interpretation
  • The stage is inverting, so the gain sign is negative.
  • Reported voltage gain: approximately -1.09 V/V.
Important note
This biasing puts the transistor deep into saturation, so it is not behaving like a properly biased linear common-emitter amplifier.
  • Base voltage: 0.728 V
  • Collector voltage: 48.9 mV
So the waveform and gain above are valid for the exact circuit you requested, but this is an overbiased saturated stage, not a normal small-signal CE amplifier.
If you want, I can also simulate a properly biased version of the same 2N2222 amplifier and compare the gain and waveform.
Simulate corrected bias
Add emitter resistor
Check DC operating point
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