|
Ok, you all convinced me to try these. I ordered 2. Now do I understand correctly that these gas filled glass ballasts regulate current as the set comes on, so there would be no need to add a filament transformer to protect the 7JP4? - as I had been planning to do.
I have 3 ts-4j chassis: one just missing the ballast, and one missing the ballast and flyback. I figured I would try these tubes with those chassis (if I can find a flyback for that one). The third chassis was modified already for filament transformers, but whoever did it made a real mess of it with 3 separate filament transformers and a variety of series-parallel circuits. I got that one to work using that scheme eventually after I sorted it out, but it didn't work that well, and all those transformers didn't really fit under the chassis. On that one, given it's already modified, I thought I might as well go with making a ballast from resistors, and adding a filament transformer for the crt. Or maybe even try to make it into a transformer set entirely with all 6v tubes.
|
07-26-2009, 06:17 PM
Threaded Mode