Re: reverse polarity protection (ubitx.net)
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Around 1970 I repaired the CB radios for extra spending money. Many of the mobile 12 volt rigs had a fuse in line before the radio and a diode across the line inside the radio across the line. I repaired about a dozen or more where the diode had shorted and blew the fuse, but the radio was ok. The thing is that you use a fuse that is as low in amp ratings as you can. Many of the fuses were around 3 to 5 amps and the diode was rated for 1 amp. I did see one or two where someone had put a 20 amp fuse in it and the diode burnt open and the rig was beyond reasonable repair.
On Mon, Aug 6, 2018 at 11:07 AM, Jonathan Washington <kd5cfx@...> wrote: