Triplers for old tube sets

[DaveWM]

there is a thead over on ARF about using new flys on old sets. I wondered of a tripler could be used if just the HV tire is smoked.

For those who dont frequent ARF I figrued I would mention the results here for the equiring minds.

the set is a zenith roundie using a 6JS6 HOT. its completly functional, I did not disconnect the HV lead. I did connect a jumper from the HOT plate to the input of a TV tripler, then the HV prob to the anode lead from the tripler, and of course the grond clip to the chassis.

I get about 12kv from the tripler, that is with a functional HV tire still hooked up to the CRT (full raster). Not sure what would happen with out the load of the reg HV tire as far as output from the tripler.

anyway it seems like it may be an avenue to go down as the supply of FLYs dries up. I assume the tire is the most likely failure of old flys. clearly the mutlplication factor would need to be higher so the multiplyer would need to be made from discreet componets.

I guess I should have titled this thread "voltage multipliers for old tube sets".