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Old 03-30-2017, 09:03 AM
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timmy timmy is offline
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Join Date: Jan 2011
Location: ferndale ny
Posts: 3,532
Pilot tv

Was wondering, I have a pilot I recapped and works fine no problems however when I recapped it what I come up to was the b+ voltage was to low and after trying other 25z6 positive tubes it would not come up enough so I added a diode across the tube and the voltage was good. So if I wanted to eliminate that tube chances are I could leave that diode in place but then add a resistor to complete the string, I would have to figure out what value. But the other tube, the negative 35w4 my wonder is could that tube be eliminated , it would be the same as the other only what has to be done with the diode, just reverse it? I ask because I have read a few threads on the restoration of these pilots and what was said was that the 35w4 cannot be eliminated. I thought just turn the diode around, of course to make it the right polarity and add the resistor for the string. I don't know if I'm close but does 80 ohms 15-20 watts sound close for a 25 volt tube. And 100 ohms 15-20 watts for a 35 volt tube.
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