ballast replacement

[Rich12]

Hi everybody, does anyone know of a suitable replacement tube I can use for a Emerson 367023 ballast tube? thanks

[Electronic M]

If you can't find an original (likely) there are ways of substituting for it (power resistors, capacitors, diodes ). If all it does is drop heater voltage you can make a capacitive dropper with the same AC resistance as the ballast.

[dieseljeep]

Originally Posted by Electronic M

If you can't find an original (likely) there are ways of substituting for it (power resistors, capacitors, diodes ). If all it does is drop heater voltage you can make a capacitive dropper with the same AC resistance as the ballast.

The ballast tube used in that model is for the voltage doubler and the B+ voltage divider. It looks like, two 10 ohm and three 75 ohms. Possibly all 10 watt wire-wounds.

[Rich12]

thanks for the advice, I've got some emails out to tube suppliers. Even if I find a replacement I'll give making my own a shot. It's a good learning experience

[Rich12]

Yes, thanks, that's what I've found on the schematic 2 10's and 3 75's. I've got them on order