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Re: Connecting resistor's value in Triode mode

That KT-90 was acting up. 520 volts across the tube and 50 ma is a plate dissipation of 26 watts - that's just barely more than 1/2 the rated dissipation.

Look through the plate holes (carefully!!) while the tube is running and see if you see the screen wires glowing white in a lot of places. If so, you found the cause of the problem.


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  • Re: Connecting resistor's value in Triode mode - Jim McShane 15:04:45 09/20/06 (0)


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