Lundahl Anode Transformers, LL1650
One secondary 350V/0,63A-winding
With the "patented" Lundahl use of a couple
of silicon diodes back-to-back over the
winding a full-wave rectification using
for instance a GZ34 tube rectifier is possible.
These transfomers need not to be of C-core type but it is a nice fact that they are available at the same
fantastic manufacturer that manufacture C-core output transformers. I do however have my own designs of
both Swedish and Chinese brand that can give 450VDC in a tube amplifier type such as The Williamson Amplifier.