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RE: Help with KT150 questions

" If they test good at let's say 300V I don't see why they would not test good at 500V, for example. "

Really?

I can tell you from experience that that is not always true.

Sometimes an internal short that will not show up at 300 volts shows up at 500 volts.

Further more, just because a tube has the proper transconductance when operated at 300 volts that does not necessarily mean that it will have the proper transconductance at 500 volts.

The best tube tester, for the tube you intend to use, is the circuit you intend to use the tube in.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"


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