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For a common-emitter amplifier, the purpose of swamping is ________(a) to minimize gain(b) to reduce the effects of r’e(c) to maximize gain(d) no purposeI got this question during an interview for a job.Origin of the question is CE Amplifier with an Emitter Resistance in chapter Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

Answer»

Right ANSWER is (b) to REDUCE the EFFECTS of r’e

The explanation is: A swamping resistor is an unbiased resistance in the emitter (re) circuit of a common-emitter amplifier. The swamping resistor stabilizes the voltage gain and reduces distortion.



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