Published:2009/7/1 2:43:00 Author:May | From:SeekIC
Circuit NotesThis circuit converts frequency to voltage by taking the average dc value of the pulses from the 74121 monostable multivibrator. The one shot is triggered by the positive-going ac signal at the input of the 529 comparator.The amplifier acts as a dc filter, and also provides zeroing. The accuracy is 2% over a 5 decade range. The input signal to the comparator should be greater than0.1 volt peak-to-peak, and less than12 volts peak-to-peak for proper operation.
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