VARIABLE_FREQUENCY_UP_TO_05_MHz

Published:2009/7/15 2:33:00 Author:Jessie | From:SeekIC

Frequency is determined by choice of values for C and frequency-control potentiometer R4.Square-wave output has almost equal mark-space ratio over wide frequency range. Regenerative action is rapid, reducing transition times. When circuit is switched on, C is uncharged and Tr2 is on. C charges until Tr1 begins to conduct, cutting off Tr2 and discharging C through R4 until Tr1 cuts off and cycle repeats.-J.L. Linsley Hood, Square-Wave Generator with Single Frequency-Adjustment Resistor, Wireless World, July 1976, p 36.



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