[time-nuts] HP 58503B PSU replacement
holrum at hotmail.com
Thu Nov 8 14:50:29 EST 2018
I put a $25 50 watt (?) Meanwell in mine and in mine and it works well. The original power supply was made by PowerOne. They are still made...$300-$400 on Digikey and Mouser.
My 58503B had a shorted ceramic cap across the input of one of the 15V regulators. The cap was glowing orange with the new supply. Maybe that killed the original supply.
I think the OCXO oven heater is powered across across +/- 15V.
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