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Last Updated on: Tuesday, June 01, 2021 03:06 PM

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More  One Shot

Accurate One Shot Pulse Generator
(May 1, 2005)

This timer circuit draws only 3ua of current, and can be powered by DC supplies ranging from 3v to 15v.  This hobby circuit produces accurate pulses whose time can easily be adjusted, based on the R1 x C1 time constant.  The time should not change, even as the supply voltage varies.  With the components shown, the circuit generates a one second pulse, triggered by a short positive pulse at the input.  This hobby circuit uses a CD4013 flip/flop and a TLV3701 voltage comparator.  Unlike a classic 555 timer circuit, this circuit draws a hundred times less current. 

Click on Circuit Below to view PDF of Schematic

Accurate 1 Second One Shot Circuit designed

 by Dave Johnson, P.E.

More  One Shot

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