HV artificial CT

[g1]

Saw someone say they had found a setup like this in a (working) amplifier for the high voltage supply. I've never heard of it or seen it before (or am I just not recognizing it?).
I'm guessing there must be reasons it's not common, what kind of problems does it present?

[loudthud]

It's basically just a Full Wave Bridge. Two legs have extra diodes. The "short" legs need to be able to withstand full peak Voltage. Output is the full V peak of the winding.

[pdf64]

Yes, assuming it’s feeding a reservoir cap, the (unloaded) VDC will be 1.4x the winding VAC. Whereas with a CT to 0V & 2 phase rectifier arrangement, the VDC will be 0.7x the winding VAC.

[g1]

Thanks, a real 'duh' moment, sometimes it's right in your face but you can't see it.
Just a standard bridge arrangement with extra diodes as noted. It was a conversion from full wave CT, so it looked funny on paper with the extra diodes.