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Q. What are the features of clamping circuits?
The clamping circuit does not change the peak to peak or r.m.s value of the waveform .Thus the input waveform and clamped output have the same peak to peak value.If we measure the input voltage and clamped output with an a.c voltmeter the readings will be the same.
A clamping circuit changes the peak and average values of a waveform.This point needs explanation .Thus if a input waveform has a peak value of 5V and average value over a cycle is zero and the clamped output varies between 10V and 0V.Then the peak value of the clamped output is 10V and average value is 5V.Hence we arrive at a very important conclusion that a clamper changes the peak value as well as the average value of a waveform.
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Q. On a CD amplifier R s = 4k?, µ =50 and r =35k?. Evaluate the voltage gain A v . A v = V o /V i = µRs / (µ+1)Rs + r
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