demodulator circuit

Published:2011/6/14 9:30:00 Author:chopper | Keyword: demodulator | From:SeekIC

I.The operating principle of demodulatorDemodulator is a important part of modulation DC amplifier circuit.It can restore the AC voltage which has been amplified to the DC voltage,and its size and polarity are according to the width and phase position of the AC voltage.The following picture is the principle of the demodulator.RL is a load,C is a filter capacitor to smooth the output DC voltage.Demodulation switch K　is of the same frequency with input AC singal,Vi.



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