DUTY_CYCLE_MEASURER

Published:2009/7/10 1:48:00 Author:May | From:SeekIC

An Intersil 7101 31/2-digit A/D converter is used to display the duty cycle of a pulse train as a percent-age. The frequency range of this circuit is 100 Hz to 250 kHz. The CM0S gates convert the pulse train to constant amplitude. This amplitude is then compared to a reference of 1V, derived from R3 and R4. P1 is for calibration.



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