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unixmanuk · 11th Feb 2019, 1:36 pm

Hi Malcolm,

I have one of these. They were originally powered from 1x 90V dry cell for the H.T., and a 4.5V cycle lamp type battery for the filament supply.

When the 90V cell became unavailable, I built a crude unregulated mains supply (transformer, bridge rectifier, choke and smoothers) that gave me about 80V that worked well enough for the H.T. side.

A google search for 90V Battery Eliminator will yield results for suitable schematics and ready made units

11th Feb 2019, 1:36 pm	#2
unixmanuk Pentode Join Date: Jan 2012 Location: Worcester, Worcs. UK. Posts: 112	Re: HAC Regen receiver PSU Hi Malcolm, I have one of these. They were originally powered from 1x 90V dry cell for the H.T., and a 4.5V cycle lamp type battery for the filament supply. When the 90V cell became unavailable, I built a crude unregulated mains supply (transformer, bridge rectifier, choke and smoothers) that gave me about 80V that worked well enough for the H.T. side. A google search for 90V Battery Eliminator will yield results for suitable schematics and ready made units __________________ John Last edited by unixmanuk; 11th Feb 2019 at 1:48 pm.