On 7 Dec 2005 at 12:54, John Francis wrote:

> 
> You don't need to put 20KV through a tube to test it
> Most valve testers just check for simple things like
> broken filaments - 6V is quite enough for that.

The good ones checked gain and leakage currents too. 


Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
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Pentax user since 1986, PDMLer since 1998

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