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Old 21st Oct 2020, 3:13 pm   #1601
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 6,582
Default Re: The "Sussex" Homebrew Valve Tester.

Yes, voltages on tube sockets should be taken under load and should be within 10% of nominal value.Grid stoppers (in series with grid pin) are typically about 1000 ohms.

If you have a scope you could look at the valve electrodes, but note that with this sort of oscillation the scope probe my well stop it !

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