[time-nuts] HP 58503B PSU replacement

Mark Sims 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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