1_kHz_FAST_START_GATED

Published:2009/7/5 22:30:00 Author:May | From:SeekIC

Circuit is conventional phase-shift oscillator in which frequency is determined by C2. C3. C4. R5. R3. and input impedance of transistor. When input is +5 V, almost 100 ％ negative feedback blocks oscillator. When input drops to0 V. D1 is reversebiased and negative feedback is removed. At same time, edge of input pulse is applied to transistor base to kick off oscillator on its first half-cycle, which is always in phase with falling edge of input signal.-G. F. Butcher. Gated Oscillator with Rapid Start. Wireless World. Aug. 1974. p 272.



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