The homebrew substitute is mercifully cheap and easy to build, though — a momentary DPST toggle switch is partially gutted, with a length of nail substituted for one of its poles. The nail ...

but is there something prebuilt that I could just order online or something? I'd like to use a toggle switch for turning on my PC.

It works in ‘toggle’ mode; that is, the first switch closure applies ... Both circuits provide an inexpensive way of deriving a latching function from a momentary switch and, just like a mechanical ...

You can build a touch switch quite easily with old-school chips. The traditional softswitch takes input from a momentary single-pole pushbutton and lets you press to toggle power on and off.

The circuit shown in Figure 1 takes an electromechanical approach to implementing a toggle function, replacing the Schmitt trigger IC in Olenyik’s design with a relay. Figure 1 A momentary-contact ...