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Old 19th Mar 2021, 10:14 pm   #38
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: AVO 163 amp board ~ transformers

Eminently do-able. That transformer or something very like it is important for isolation.

As far as recalcitrant meters are concerned, could make it drive a properly hunky 1mA movement and have a cal twiddler with plenty of range.

Can do it with bipolars, opamps, all sorts of things... even valves?

Opamps are so 1970s. Ask any millennial and he'll tell you there ought to be a phone app for doing it!

David
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