Triplers for old tube sets

[kx250rider]

I suppose with a little (or a lot) of engineering, you could build a power supply using a tripler or better yet, an integrated FBT/tripler such as has been used in TVs from the 80s & up. The old ECG-526 style triplers still required a flyback to input high voltage RF, and it came out as DC 26kv. If you use a later model integrated fbt, you might be able to make up an oscillator & driver circuit, copying a cheapie color TV, and feed that with a regulated 150-volt B+ line coming off some place in the TV. It would be a LOT of work, but it could also be used as a temporary sub in a CT-100, or other set where the FBT is about impossible to find.

The caveat is that the TV's own flyback still needs to be working to produce horizontal sweep, as to try to synchronize an external horizontal sweep circuit would be a project about like building the Panama Canal. At least if the original flyback is working but no longer needs to feed the HV to the tube, it might work.

Charles