Pushing the button once will energize the relay. Pushing it a second time will de-energize the relay. Any simple momentary action push-to-make switch will do. The prototype has a single-pole relay. But you can use a multi-pole relay if it suits your application. The circuit will work at anything from 5 to 15-volts. All you need do is select a relay with a coil voltage that suits your supply.
This simple circuit will energize and de-energize a relay at the push of a button. Any type of momentary action push-to-make switch can be used. Pushing the button once – will energize the relay. And pushing it a second time – will de-energize the relay.
Here is a circuit that uses a 555 timer as the bases of the touch switch.
A touch switch is a switch that is turned on and off by touching a wire contact, instead of flicking a lever like a regular switch. Touch switches have no mechanical parts to wear out, so they last a lot longer than regular switches. Touch switches can be used in places where regular switches would not last, such as wet or very dusty areas.
- 1x 10uF 16V Electrolytic Capacitor (C1)
- 2x 100K 1/4 Watt Resistor (R1, R2)
- 1x 10 Meg 1/4 Watt Resistor (R3)
- 1x 4011 CMOS NAND Gate IC (U1)
- 1x Board, Wire, Socket For U1 (MISC)