Why CE configuration has an iverting output

Why we obtain inverting signal (180 out of phase ) in CE configuration

Your Answer

The inversion can be easily seen intuitively without any complex circuit analysis. If you pull up on the base of the NPN device (increase the voltage), the collector current will increase. As the collector current increases, the voltage across the load resistor will increase and this results in the output voltage dropping. The output voltage decreases in response to an increasing input voltage… thus the inversion… and this can be represented as a 180 degree phase shift.

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