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Old 5th Feb 2019, 11:46 am   #26
ms660
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Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
Default Re: Ferrograph 4A: Restoration advice needed

The 480v anode to anode was an estimate based on the other voltages given in the manual.

I would double check the transformer primary and secondary connections you're using for establishing the voltage/turns ratio.

Lawrence.
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