07-15-2019, 04:34 PM
You might be on to something, I only get .980 volts on the 1R5 filament. Now I changed out the selenium rectifier and have a 100 ohm 5w ceramic for a dropping resistor if I raise the variac to it's max about 135 ac I get 150vdc (calls for 140v after the rectifier) between R16 and R3 seems like that should be enough but I only get 1.07vdc across pins 1&7.
Now I hooked up a power supply from AES I get 88vdc on the "B" battery and 4.5vdc on the "A" battery and I can adjust the "A" to get 1.4v on 1R5 but still nothing except static? where to go?
Now I hooked up a power supply from AES I get 88vdc on the "B" battery and 4.5vdc on the "A" battery and I can adjust the "A" to get 1.4v on 1R5 but still nothing except static? where to go?
