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Single Gate LED Flasher

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Hi,
I have another of my knucklehead questions. Is it possible to make a controllable, (on-off), single-NAND-gate LED flasher? I can do it easily with two gates as an oscillator or RS flip-flop, but I've never seen it done with only one gate. Thanks.
 

Sebi

Active Member
With schmitt-trigger NAND can do this. When the switch is open=run.
 

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