Hey there, currently I am working on a simple digital lighting controller to control some fadable fluros.
The circuit works as is (switches 12v @ 250mA regulated), but i would like to add overvoltage / overcurrent protection on the output transmit circuit. (the transmit circuits needs to handle 240v input across its outputs for long periods of time)
Currently I am looking at using a combination of a polyswitch (for current) and a TVS for overvoltage protection. I somehow need to incorporate this into my existing circuit design.
I was wondering if perhaps anyone on the forum with some experience with this sort of application could offer any assistance.
Attached is the digital lighting control interface circuit that needs the protection to be added.
Look foward to some replies.