anyone see any pitfalls?
i am replacing a mechancial switch on an old drill press with something like this. a green NO and a red NC button, hold NO for ~5sec and SCR clamps on, press NC and SCR dies. the led is actually a led in a opto relay (ssr).
the delay is to prevent accident on by a switch bump, etc. does the gate need a small R (~100ohm) between it and cap?
i am replacing a mechancial switch on an old drill press with something like this. a green NO and a red NC button, hold NO for ~5sec and SCR clamps on, press NC and SCR dies. the led is actually a led in a opto relay (ssr).
the delay is to prevent accident on by a switch bump, etc. does the gate need a small R (~100ohm) between it and cap?