10_pF_TO_1000_μF_DIGITAL

Published:2009/7/5 22:44:00 Author:May | From:SeekIC

Uses 555 timers as free-runnlng oscillators, one for gating and other as clock driving digital counter having fairchild FND507 4-digit display，Arrangement gives good accuracy without use of crystal oscillator,－W.H. Wang,Low-Cost Oscillators Build Accurate Capacitance Meter,Electronics,May 26, p 127 and 129.



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