Circuits
designed by David Johnson, P.E.
Last Updated on:
Monday, December 25, 2017 02:05 PM
Master Category List - Dave's Circuits
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David A. Johnson, P. E. -- ALL Rights Reserved.
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One Shot
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Accurate One Shot Pulse Generator - 9/2/2010
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This
timer circuit draws only 3ua of current, and can be powered by DC supplies ranging
from 3v to 15v. The 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. The 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. |
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Click
on Drawing Below to view PDF version of Schematic |
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