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Need help with building or purchasing an HV power supply

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Patrick

Wed Apr 20 2011, 09:09PM

Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639

ny11212 wrote ...

How is that iffy.

No one here has ever signed a Non-Disclosure Agreement?

Whatever. I guess this was a waste of time. Thanks for nothing.

The NDA is not the problem, your lack of ability to specify what is needed is. Remember I am the only one who thought what you wanted was even possible, but I had to "divine" your intent.

ny11212 wrote ...

I have seen a power supply like this before, it was a custom built European one, but I know it exists.

do you still have the custom one?

I have the ability to build this as an off mains SMPS.

Arcstarter

Thu Apr 21 2011, 12:41AM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

ny11212 wrote ...

How is that iffy.

I posted this with the best of intentions, I guess it was kind of a waste of time. I prefaced by saying that I was new to this.

It's interesting that all I asked for was a little help, or if someone would want to make money by building a power supply.

I can't discuss the purpose of the device, except to say that it is a cold plasma etching device.

No one here has ever signed a Non-Disclosure Agreement?

Whatever. I guess this was a waste of time. Thanks for nothing.

You have to understand, someone claiming to be a noob asking for a very high power HV source is indeed iffy because of the inherent danger. 30kv at 2 amps is no laughing matter!

Because of how you reacted to Patrick's reply, you probably aren't going to get anymore help. However, i can tell you that if i where you, i would find a 50kw pole transformer with a huge ass voltage doubler and a huge ass variac. If you need something that can supply this kind of power, surely you are prepared to spend a ton of money. Im sure you could find a proper pole transformer with 50kw and 14.4kv rating under 1000USD, but you will have to look around a lot. As for the variac, you would need to use multiple variacs in parallel, which would almost surely run you thousands of dollars. The voltage doubler would be fairly cheap though.

James

Thu Apr 21 2011, 07:26AM

Registered Member #3610 Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506

I think it's been made clear that he wants a pulsed supply with a variable repetition rate, so high powered pulses, but a relatively low average power. Not trivial, but not something one needs a pole pig for.

That said, he doesn't seem to know quite what he needs, which is most of the problem in the first place.

It's a bit like saying "I need to design a road vehicle that can go 100 mph" without being able to say what sort of roads it will drive on, not knowing how much cargo it needs to carry, how quickly it must reach top speed, how much range it must have, and when asked whether it should have an automatic or manual transmission, not knowing what a transmission is. Then getting upset and storming off when nobody can whip out a complete design.

Ash Small

Thu Apr 21 2011, 09:28AM

Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245

We all have to start somewhere James, but not being able to discuss what you require due to a non-disclosure agreement does somewhat complicate things.....

Patrick

Thu Apr 21 2011, 11:51AM

Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639

320VA input, 240VA output at 10-20-30kv is no big deal, provided there are no "suprise" reqiurements I dont know about.

teravolt

Thu Apr 21 2011, 01:50PM

Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111

Hi ny11212, what you ask for is industrial and only the fittest would commit to building such a device and it would not be cheap. thyratron based PFN is the method for achieving this where I work.

quicksilver

Thu Apr 21 2011, 04:16PM

Registered Member #1408 Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679

James wrote ...

It's a bit like saying "I need to design a road vehicle that can go 100 mph" without being able to say what sort of roads it will drive on, not knowing how much cargo it needs to carry, how quickly it must reach top speed, how much range it must have, and when asked whether it should have an automatic or manual transmission, not knowing what a transmission is. Then getting upset and storming off when nobody can whip out a complete design.

Agreed. To be blunt, that's a red flag. A least be polite; all the replies were meant to help; not hinder.

James

Thu Apr 21 2011, 04:44PM

Registered Member #3610 Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506

Ash Small wrote ...

We all have to start somewhere James, but not being able to discuss what you require due to a non-disclosure agreement does somewhat complicate things.....

As somebody else said, the NDA is not the issue, it's the not being able to explain the requirements part. If you can't talk about the end application that's one thing, but you have to be able to clearly state the requirements of the power supply part in question or nobody on a public forum will be able to help.

Ash Small

Thu Apr 21 2011, 06:45PM

Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245

James wrote ...

.

As somebody else said, the NDA is not the issue, it's the not being able to explain the requirements part. If you can't talk about the end application that's one thing, but you have to be able to clearly state the requirements of the power supply part in question or nobody on a public forum will be able to help.

I agree, but seeing as how the OP seems unable to explain the requirements of the power supply part, If the OP was able to discuss the process we'd probably be able to work out what's required.

These systems generally, and there are different types, have an RF or misrowave plasma/ion generator and use pulsed electrostatics to accelerate the ions toward the substrate to etch it. often fluorine is used as fluorine ions are reactive. there are variations depending on the specific application, so without more information regarding this specific application it's difficult to know what to advise.

It sounds like this isn't an entirely new experimental process, as the OP says he has seen a 'custom made' European power supply that he wishes to copy.

Having built numerous different similar systems, some for commercial purposes and some for research, and still having contacts at what is reputed to be the world leader in systems for research, as well as some of the 'newer' commercial technologies (the competition takes a while to catch up, but eventually produce cheaper systems) I could possibly help if more information was forthcoming.

Patrick

Thu Apr 21 2011, 07:16PM

Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639

I think he booked. He doesnt seem to have been of a stable mind.

I dont have any idea how he will find what he needs. With his requirements he'll have to find a custom PS maker.

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