Circuits designed by David Johnson,
P.E.
Last Updated on:
Saturday, December 23, 2017 03:21 PM
Master Category List - Dave's Circuits
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Latch Circuits |
On/Off Latch Circuit 6 (January
9, 2010) |
Often you want to turn on and off power to a device with a single pushbutton
switch. The circuit below performs this logic function with just a few tiny
parts and can operate from DC supplies between +2v and 5v. It uses two
inverters within a 6 pin SN74LVC2G14 device from Texas Instruments. Each
press of the button toggles between the two on/off logic states. The logic
output is connected to a PMV65XP p-channel FET from Philips. This component should
be able to handle 2 Amps of current |
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Click on Drawing Below to view PDF version of Schematic |
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