12-10-2026, 01:52 PM
(12-10-2026, 01:44 PM)Mike Watterson Wrote: I'd not bother unless you get everything working and it's dim!
Note that if the tube has not been in use for years, that running the heater alone for a few hours (no other connections) may boost emission.
It was also common to add a heater transformer in case of isolation failure or to boost the voltage a little to get some more life.
