Re: The "Sussex" Homebrew Valve Tester.
Les,
What a superb instrument, I'm really impressed. Just goes to show what can be done.
Just a thought for those interested in testing the "D" series of valve. \forget trying to get the heater volts from the Sussex, use a D cell connected to the external supply either internally or externally. This will give a DC voltage which will obviate any GM problems. A high capacity cell will give a very long life, as the valves only draw about 100mA and would only be used for short periods at a time. One side of the heater will of course have to be connected to cathode either via a removable link or switch.
Good luck to the remaining builders - at leat now you have a target to aim for
Mike
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