What you were looking for was the post (sorry I don't have the original) about: http://www.dimensionengineering.com/DE-SWADJ.htm
They also have a buck (increase) one as well. You can also look at DigiKey for the drop in 78xx series of switchers: http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&WT.z_homepage_link=hp_go_button&KeyWords=102-1715-nd Hope that helps. Mark KC5EVE At 08:50 AM 9/2/2009, you wrote:
Thanks for all the responses. I specifically said "buck converter" because I've used 7805s and know how much heat they put out. I guess I was hoping that someone would point me at the details of one of the cigar lighter adapters, rather than a product that I can buy and cannibalize... I know that there was a little company doing these and potting them in epoxy. Boost converters, too. They might have disappeared by now but I'm trying to dredge them out. 73, chris
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