Sequential timer


Posted on Jun 27, 2012    6482

By utilizing both halves of a dual timer it is possible to obtain sequential timing. By connecting the output of the first half to the input of the second half via a 01 µF coupling capacitor sequential timing may be obtained. Delay ti is determined by the first half and ta by the second half delay. The first half of the timer is started by momentarily connecting pin 6 to ground

Sequential timer - schematic

When it is turned out (determined by 1R1C1), the second half begins. Its duration is determined by 1R2C2.

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