Get to know what a bridge rectifier is, lol, what an ass hat. You can turn the bulb 180 deg and it will still be ground potential. At least you could have done is meter the heat sync to provide us that your hypothsys was incorrect.
Interesting, Dan. In all my time in engineering , I never once heard of "1 mil" being "one thou". And with good reason perhaps, as it would be very fertile ground for an expensive - or dangerous - mistake.
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