I'm having a hard time visualizing things to do with switch, can anyone give me some interesting ideas? maybe even show the limits of switch, where to use it, where not to use it, etc?

(I'm almost under the impression that switch can't be used for anything useful :/ )




My problem with switch is that P and N SCN transfer charge to too many things, they can't covertly be inserted to switch the switch on and off cause they'll make the spark travel where I don't want it to go, is there any way to work around this?

I guess that's interesting, but I was thinking more about uses in complex electronics and such