VOLTAGE_CONTROLLED_CURRENT_SINK

Published:2009/7/11 4:17:00 Author:May | From:SeekIC

This circuit widens the linear frequency span of an HC4046 from one decade to nearly three decades. An LM358 is used as a constant-current sink to replace the frequency-determining resistor (10 kΩ) from pin 9 to ground. Pin 9 is held at a fixed 2.5 V for this application.



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