Dual LEDCMOS flash circuit
Source: InternetPublisher:smallembedded Keywords: CMOS LED flash circuit DCM Updated: 2020/09/27
Frequency converters IC1-a and IC1-b form a multivibrator, and IC1-c is a buffer. Inverter IC1–d is connected so that its output is opposite to ICL–c; when pin 6 is high, pin 8 is low and vice versa. Since pins 6 and 8 are both changing state, the first LED lights up and then the others because they are connected in reverse.
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