Power supply schematic? please critique.

[tedmich]

Here is a part that works like an LM317 but will take up to 125v directly.

TL783. I noticed it doing exactly this job in a mixer power supply.

Mouser sells them for under $2.

http://focus.ti.com/lit/ds/symlink/tl783.pdf

Nice find Enzo! I have been keeping track of HV regulators, the Supertex LR8 will handle up to 450VDC but only 10mA:
www.supertex.com/pdf/misc/LR8K4PSS.pdf

And the audiophiles love Michael Maida's LM317/MOSFET regulator:
www.national.com/ms/LB/LB-47.pdf

or the Swenson regulator, fine tuned by Gary Pimm to handle 800v ~1A, its great for bench supplies and costs $15 in parts from Mouser:
Gary's web site:
PimmLabs
click on Swenson reg on left.

layout/bom photo
http://home.comcast.net/~pimm1028/we...or_hv_mini.zip