Full Member level 5
I need to power a device off my car's ECU +12V rail. When the car is starting, I would imagine that it's very inductive,and these spikes can be potentially harmful to a regulator that I have in line with the power. Either way, I don't want mad voltage fluctuations on the input, so how should I filter these out? I was thinking to either shunt them off with a Zener (which I read can be bad), or maybe use some sort of LC filter??