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RE: 240 voltage modules better for lower voltage tubes

"The best I could reduce the voltage before the transformer quits working is about 8-9 turns off or about 5volts."

I've been thinking about that for some time. I suspect the cessation of oscillation isn't directly related to the "front end" of the supply. It's very possible that reducing the number of turns on the secondary is simply creating insufficient inductance, and the winding is acting like a shunt. You could prove or disprove this by leaving the secondary turns as-is (operational) and rewinding the primary with more turns. That will have the same effect on output voltage, but will maintain critical inductance. I would do the test myself, but the toroidal versions I just ordered won't be here for two to three weeks.



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  • RE: 240 voltage modules better for lower voltage tubes - Triode_Kingdom 13:19:12 12/08/16 (0)
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