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Old 12th Mar 2021, 3:09 pm   #5
turretslug
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Join Date: Nov 2011
Location: Surrey, UK.
Posts: 4,400
Default Re: R1155 power supply unit

I can only concur with Silicon's comments- I've encountered some toe-curlingly horrible PSU lash-ups, including a Bendix RA-1B (similar HT voltage requirement to the R1155) run from a large 300-0-300 transformer with silicon rectifiers, a huge (ex-telly?) smoothing capacitor and whose standard of build on a slice of folded scrap steel sheet was so desperately dangerous that I'm stuck for polite words to describe it.

Depending on the circuit details, it is conceivable that the PSU in question could provide about the right voltage on-load- if it has a directly-heated thermionic rectifier with a relatively high forward drop and smoothing choke(s) with fairly high resistance, then 365V off-load could well drop to around 220V or so running, but a thorough examination/appraisal of the circuit and test with a representative load (that won't set things on fire if you go to answer the door or the phone!) is called for before you even think about connecting it to the receiver.
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