Re: The "Sussex" Homebrew Valve Tester.
Hi All,
I have had chance to evaluate Ed's mains transformer, all seems OK
I am attaching a revised circuit diagram to take into account the bridge rectifier and additional heater voltages.
Extra parts required are:-
2 x 1N4007 rectifiers.
1 x 2P 6W MBB switch
Only 5 ways are used. I have included an external heater volts position which isolates the transformer winding and will allow an external heater voltage to be applied via a couple of extra sockets on the case.
I hope this makes sense
Regards
Mike
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