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Q. Explain Common Emitter Circuit With The Help Of A Circuit Diagram?
Most transistor circuits have the emitter,rather than the base,as the terminalcommon to both input and output.Such a common emitter or grounded configuration is indicated above.In the common emitter configuration the input current and the output voltage are taken as independent variables,whereas the input voltage and output current are dependent variables.
VBE = f1 (VCE,IB)
IC = f2 (VCE,IB)
Here the voltage VBE is the voltage across base and the emitter. The emitter region is grounded. The emitter base junction is forward biased and the collector base junction is reverse biased. The output is taken through RL ie across collector and the emitter.
Lenz's law states: 'The direction of an induced e.m.f. is always like that it tends to set up a current opposing the motion or the change of flux responsible for inducing that
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