T,
Thanks very much for the suggestion!
There is an HP 6521A in the rack that would be perfect for the screen supply.
0-1000vdc, 0-200ma.
Not much use over the years, except for hi-pot and testing for breakdown/arcing (HP is current limited).
So far, the pile'o parts for this project is coming together, and also using up some items that have collected around the shack.
Better to use them for a project, than drag to the hamfest to sell.
- HV plate - Transformer from Collins 30S-1
- Rectifier - still have piles of spare diodes and resistors from the last one, just need to find another sheet of nice green fiberglass.
- Screen supply - HP 6521A
- Filament transformer for 4-1000A - use this spare from 3CX3000A7 project.
Not sure what to do about the PS filtering on this one.
Last supply I used fixed chokes from a Gates, 20H, and 12mfd of 5kv oil filled caps.
However, big chokes are becoming scarce.
Oil-filled and the more modern plastic HV caps are still easy to find.
Frank