Re: Sources for high voltage power supplies?

From: Michael Noone (mnoone.uiuc.edu_at_127.0.0.1)
Date: 03/21/05 

Date: Mon, 21 Mar 2005 02:34:12 -0600

Winfield Hill <hill_a@t_rowland-dotties-harvard-dot.s-edu> wrote in
news:d1kvcd01mn7@drn.newsguy.com:

> Michael Noone wrote...
>>
>> Hi - I need to find a high voltage power supply. I'm not quite sure
>> yet exactly - but It'll need to be something like +- 400-1000 V DC (I
>> haven't been given exact specs for what's needed yet) and about 150
>> or more watts. Any suggestions as to what I should get? Thanks,
>
> As long as the subject is on the table, I can mention the names
> of a half-dozen companies that make small low-cost modules with
> output voltages ranging from 0.5kV to 10kV, some with isolated
> outputs. These are all small unregulated modules well suited
> for powering other high-voltage circuitry, discrete opamps, etc.,
> etc. If a precise voltage is wanted, you add a simple feedback
> loop to control the input voltage. I have four or five favorite
> circuits for this purpose, and over the years have found this to
> be a more effective way to go than making custom HV supplies.
> This is true even if one has to add output filters, current
> sensing, fast shutoff, etc.
>
> One of the names is EMCO, http://www.emcohighvoltage.com/

I found this company before I posted my question through Google - but as
far as I can tell - their most powerful power supply is 15W, which puts
it well under what I need.
 
> I can also give you the names of a number of high-power high-
> voltage supply companies, but it'll have to wait until I get
> back from vacation. One name is (was) Bertan, now part of
> Spellman, another name. http://www.spellmanhv.com/index.asp
> http://www.bertan.com/index2.html
>
> They make power supplies from 0.2W to 120kW, and 0.25 to 360kV.

Yup - I also looked at Bertan power supplies - but they seem to be very
expensive (I believe in the >$1K range, according to what their power
supplies are fetching on Ebay), though I also haven't heard back from
their sales rep just yet, so that remains to be seen.

Thanks,

M. Noone

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