In message , Andrew Gabriel
writes
As is used on EHT supplies for CRT's.

Hum, never seen that.
You've not worked on telly's for long then? If you have, you should
really be going back to your books.
They mostly use the flyback energy from
the line output transformer, a diode, and a capacitor formed
from the CRT's post deflection amplification electrode and the
earthed coating on the outside of the tube.
Only on old Mono sets is the arrangement that simple.

It's still a Cockcroft Walton ladder design even if it's built into the
EHT transformer
--
Clint Sharp