How to use a touch switch to make a circuit that turns on when pressed once and turns off when pressed again

sky999

How to use a touch switch to make a circuit that turns on when pressed once and turns off when pressed again [Copy link]

How can I use a touch switch and discrete components to make a circuit that turns on when pressed once and turns off when pressed again, and switches on and off tens of mA current?

chunyang

This is called a "bistable circuit" and it's in all the textbooks.

Jacktang

You can look for a single-button switch made of CMOS circuit, which consumes less power.

sky999

chunyang posted on 2021-3-2 12:49 This is called a "bistable circuit" and it's in textbooks.

OK, thanks

sky999

Jacktang posted on 2021-3-2 14:27 You can find a single-button switch made of CMOS circuit, which has lower power consumption

OK, thanks

annysky2012

chunyang posted on 2021-3-2 12:49 This is called a "bistable circuit" and it's in textbooks.

Very correct. Thumbs up

dy212300

I discovered the importance of microcontrollers. Just write a program to negate it and everything will be done.