livewire

& digginit.

I 2 M N AW!

Just some "food for thought". Remember that I am not a master builder or EE, so my probing techniques may not be "textbook perfect" and somewhat brutish and primitive, but they get me to where I want to go. 1)Did you take steps to correctly insulate the heatsinked HV sand to avoid an arc path across the mounting screws? 2) Did you cut all of the traces (or lift/remove all of the associated parts) that I suggested before when you went with the zener string in lieu of the battery circuit? 3) Sounds possibly like some leaky capacitance at work here. ("output voltage raises slowly") If it were me, I would cut some traces and/or remove Q1, Q2 and Q8 and anything else that connects across the rails in order to isolate the filtered input stage and the bias circuit. I would then verify that the filtered DC was correct entering the bias circuit, and recheck the bias output for 580 volts. Divide and conquer. If the bias nows reads correct, test then replace the items you removed previously. (Or reconnect the cut traces) 4) As for the main power rails, how do they compare to one another? (static test and under power) I am assuming that #2 above was completed, because I have no way of knowing what is going on with the batteries. This could shed some light on different faults in the two curcuits.

Radiohead - "The Thief"

Ear Sex!

http://youtu.be/p89AX41MxPQ

Whoa! I detect serious upgraditis in the near future. (for a lot of people)

Oh, and I'm drinking some cheap rotgut supermarket to-kill-ya.

Photo by mikeymad. Makes my liver quiver!!!

My Preshissss

Sounds just like what I went through... Maybe Kerry can help you solve it. Read back to my post #833 (@ page 42?) for info on the simple psu. Click on the attached schematics. KG did mention that something's not right with the 10 volt reference diode, but didnt explain what's up.

To clarify, 2 each 680uf @ 450VDC before the shunt & series regulators, and 2 each 100uf @ 450VDC after the series regulator, at the output.

Looking at the schematic below, there are two caps in series between each rail and ground. This would effectively divide the incoming voltage load between them, yes? kgsshvps2.pdf