Hi, I'm working on a prototype controller for vehicles, mainly a retrofit system for hot rods and custom vehicles. it will have many features, some of which I have already designed and am working the bugs out on. My main focus right now is power source. as many people know, vehicle electrical systems (especially in older systems) are very harsh. Voltage spikes can go as high as 40 volts for about 4 milliseconds, drops in voltages during starting and low battery, EMI from the ignition system, A bad regulator could also be an issue. I need to provide protection from these issue. I know from experience that a simple system of capacitors, diodes, and Coils can help to almost eliminate any noise and ripples. A good voltage regulator circuit will help to keep the voltages level. the issue is with the voltage spikes. Even when they only happen for short periods of time it is enough to damage components. I need a way to suppress transient voltages, I have found TVS diodes at mouser and such but I have no idea what I'm looking for. I have been over this article a few times,http://www.industrologic.com/autotransients.pdf but understanding it is another problem. I'd like to see what opinions others here have. a few things to keep in mind. A) Needs to be able to provide 5 volts 500ma, and 12 volts 2 amps. B) Needs to be able to be built on-board, I do not Want an external device or a pre-built board. C) Components that are through hole and not surface mounted are preferred for the prototyping stage, as most of my stuff is bread boarded before being soldered.
Whatever opinions would be great.
My other question is about LEDs and automotive power. I have a lot of retrofit LED lamps for the truck. most of them have warnings about over voltage and life expectancy. All i really see in them is a diode and a resistor. Should I create a power supply to regulate the power for these as well or is it really not much of a concern?