RCA CTC-16XL Suggestions/Tips

[Electronic M]

Originally Posted by Yamamaya42

They did once make solid state sub for the HV rec (NTE508) if you could find one, would using one also lessen the load on the FB? and what would one replace the focus rect (2AV2) with?

This should work: https://www.mouser.com/ProductDetail...7ob59eZhXAY%3D

I have 4 in series for the focus rect in my CTC2B...Granted that set uses three 3A2s for focus, HV rect, and HV doubling...Also the 3A2 has 18KV PIV rating so putting 4 5KV PIV rated diodes in series for a combined 20KV was cheap insurance against someone swapping the tubes around. (I also built a second one that I've been using in one of the HV positions in that set).

Before I looked up these modern diodes up I had a few selenium focus rect sticks from CTC-15 and similar sets that I used to eliminate the tube focus rect in a Zenith roundy and some other sets.

It will definitely reduce flyback loading since the filament of the focus rect tube pulls its filament power from the energy in the flyback