Hello, I'm building a simple circuit that will be used in a (12 v) car. I'm planning to use a simple 7805 regulator. I have only read about the spikes that gets generated when the alternator starts up or shuts down. I thought of TVS, supression chips or MOVs, but have no experience with them. Has anybody done similar projects? Regards, Robert Francisco . -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.