High-voltage bench power supply

pmillett · 2nd March 2008, 10:48 PM

I finally got around to documenting this HV bench supply that I designed and built a while ago...

Details, schematics, etc. are here:

http://www.pmillett.com/HV_bench_supply.htm

Pete

CarlyBoy · 2nd March 2008, 11:16 PM

Dammit - something else I gotta build. Pete, you're the man ...again.

nhuwar · 2nd March 2008, 11:47 PM

Nice ps Pete. Very nice

I've been wanting to build one that a bit more powerful then my isco.

Nick

DigitalJunkie · 3rd March 2008, 03:02 AM

Nice work! Aren't those Tek trannies great?

soundbrigade · 3rd March 2008, 07:28 AM

Just as I had managed to get all components to Bruce Rozenblits PSU ....

On the other hand - a friend of mine has scrapped two HEAVY PSUs at his work and one is for me. However his job is 500km away.

EC8010 · 3rd March 2008, 06:50 PM

Splendid! About the only information you didn't give was its mass. Lots, I imagine.

boywonder · 14th April 2010, 05:58 PM

Newbie question: I'm considering building this, and my B+ transformer on-hand is good for 360V@160ma.

Can I use less pass tubes? I'm assuming that these are paralleled to allow for Pete's 500ma current requirement.

I have a handful of Chinese 6L6GC's. If I can reduce the number of tubes to say 2 or 3, does anything else need tweaking?

rknize · 14th April 2010, 06:21 PM

That should work fine. I'm also going to build something along these lines, though probably more like a Heathkit IP-32 on steroids. Note that you'll need other supplies for the screens and for bias. The way the supplies are floated, they need to be separate windings.

TubeMack · 14th April 2010, 06:32 PM

I'd love to see someone sell a PCB for one that tops out around 550V. My Heath is only good to 400V. This would Make a great DIY item as these are hard to find new.

airboss · 14th April 2010, 10:03 PM

I got a commercial one that goes to 1000VDC @ 200MA. Measures volts, current and computes watts. It's got a digital display. Very kool but it kicks out the overload breaker or frys the voltage control pot (5K) randomly. When I get around to it I'll start with replaceing all the caps otherwise it's got too many sand state components for my meager brain. I'll have to get it fixed. I hope it's KVA rated. Like 500VDC at 400MA? That would be nice. It's a piece of medical equipment used in DNA testing or research. I have not been able to find a scheme.

2nd March 2008, 10:48 PM	#1
pmillett diyAudio Member Join Date: May 2005 Location: Dallas (but I am not a Texan!)	High-voltage bench power supply I finally got around to documenting this HV bench supply that I designed and built a while ago... Details, schematics, etc. are here: http://www.pmillett.com/HV_bench_supply.htm Pete

3rd March 2008, 07:28 AM	#5
soundbrigade diyAudio Member Join Date: Feb 2006 Location: Vaenersborg, Sweden	Just as I had managed to get all components to Bruce Rozenblits PSU .... On the other hand - a friend of mine has scrapped two HEAVY PSUs at his work and one is for me. However his job is 500km away. __________________ /Magnus

3rd March 2008, 06:50 PM	#6
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	Splendid! About the only information you didn't give was its mass. Lots, I imagine. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

14th April 2010, 06:21 PM	#8
rknize diyAudio Member Join Date: Feb 2009 Location: Chicagoland	That should work fine. I'm also going to build something along these lines, though probably more like a Heathkit IP-32 on steroids. Note that you'll need other supplies for the screens and for bias. The way the supplies are floated, they need to be separate windings. __________________ Russ http://www.knizefamily.net/russ/cate...ics/tubeaudio/

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2nd March 2008, 11:16 PM	#2
CarlyBoy diyAudio Member Join Date: Aug 2006	Dammit - something else I gotta build. Pete, you're the man ...again.

2nd March 2008, 11:47 PM	#3
nhuwar diyAudio Member Join Date: Jan 2007 Location: Tomball Texas	Nice ps Pete. Very nice I've been wanting to build one that a bit more powerful then my isco. Nick

3rd March 2008, 03:02 AM	#4
DigitalJunkie diyAudio Member Join Date: Apr 2003 Location: Portland,Oregon Blog Entries: 3	Nice work! Aren't those Tek trannies great?

14th April 2010, 05:58 PM	#7
boywonder diyAudio Member Join Date: Jan 2008 Location: So.Cal.	Newbie question: I'm considering building this, and my B+ transformer on-hand is good for 360V@160ma. Can I use less pass tubes? I'm assuming that these are paralleled to allow for Pete's 500ma current requirement. I have a handful of Chinese 6L6GC's. If I can reduce the number of tubes to say 2 or 3, does anything else need tweaking?

14th April 2010, 06:32 PM	#9
TubeMack diyAudio Member Join Date: Apr 2006 Location: Florida	I'd love to see someone sell a PCB for one that tops out around 550V. My Heath is only good to 400V. This would Make a great DIY item as these are hard to find new.

14th April 2010, 10:03 PM	#10
airboss diyAudio Member Join Date: Apr 2010 Location: Reno, NV	I got a commercial one that goes to 1000VDC @ 200MA. Measures volts, current and computes watts. It's got a digital display. Very kool but it kicks out the overload breaker or frys the voltage control pot (5K) randomly. When I get around to it I'll start with replaceing all the caps otherwise it's got too many sand state components for my meager brain. I'll have to get it fixed. I hope it's KVA rated. Like 500VDC at 400MA? That would be nice. It's a piece of medical equipment used in DNA testing or research. I have not been able to find a scheme.

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