RED_GREEN_LED_FLASHER

Published:2009/7/5 23:18:00 Author:May | From:SeekIC

One section of LM324 quad opamp is connected as squarewave generator giving about 1 flash per second for each LED. Series resistors for LEDs have different values because they have different forward voltage requirements. If LED 2 glows between flashes, increase value of R6 slightly. Too large a value for R6 reduces flash brilliance of LED 2. Supply can be 5 or 6 V.-F. M. Mims, Semiconductor Projects, Vol. 1, Radio Shack, Fort Worth, TX, 1975, p 69-74.



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