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Old 13th Feb 2014, 6:28 pm   #1065
mole42uk
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Join Date: Aug 2010
Location: Resolven, Wales; and Bristol, England
Posts: 2,608
Default Re: The "Sussex" Homebrew Valve Tester.

Quote:
Originally Posted by crackle View Post
Could you also please confirm if the type of problems I have been experiencing with EL34 valves is caused by a lack of ferrite beads.
If so what beads should I use, where would I get them, and how are they fitted.
Mine has a couple of large (10mm dia) ferrite rings around the bunched wires to the valveholders. Mine came from surplus gear I was stripping.

I got a few beads and added them to the individual wires later, my beads came from some old SMPS I was saving for parts.....

The grid wire is screened cable, just ordinary microphone stuff.

Richard
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