Re: 500 KV DC (fwd)

[<sroys@xxxxxxxxxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 22 Sep 2004 09:49:09 -0500
From: Bert Hickman <bert.hickman@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: 500 KV  DC (fwd)

Hi Colin,

Sounds like the easiest way would be to make a voltage doubler, using 
at least 25 to 36 of your 20 kV rectifiers or 5-7 100 kV X-ray 
rectifier sticks. Series stacks of at least 13 to 18 40 kV ceramic 
(doorknob) caps can be used to make the HV caps. If you think you 
might every try running the X-ray transformer at full input voltage, 
you'll need to use the larger number of rectifier sticks and caps to 
withstand the voltage stress (~705 kV).


      C1
      | |
-----| |-----o-------o-------- +
      | |     |       |
              |       |
            -----   -----  C2
             /\     -----
            /__\      |
              |       |
              |       |
-------------o-------o-------  -

-- Bert --
-- 
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High Voltage list wrote:

> Original poster: <sroys@xxxxxxxxxxxxxxxxx>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Wed, 22 Sep 2004 09:26:34 -0400
> From: Colin Quinney <crquin@xxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: 500 KV  DC
> 
> Hi Chip !
> 
> I have on hand an old 250 KV  60 Hz  X-ray transformer. It was manufactured 
> with three windings connected in series and it  was designed to be run in 
> dielectric oil. I can remove the iron laminate core if necessary to run it 
> at higher frequency, but maximum output power is not a critical factor for 
> what I require,  and that is variable DC to 500 KV. Filtering not required.
> 
> I'm looking for ideas for best method of doubling to 500 KV while 
> minimizing complex solid state design. I have a 1 KV Variac, dozens of 20 
> KV diodes, enough for a full wave bridge if necessary. High power output is 
> not required.
> 
> Safety is top priority. Wire netting for Faraday cage has been purchased.
> 
> Suggestions welcomed  :-)
> 
> 
> Best Regards,
> Colin Quinney
> 
> 
> 
> 
> 
> 
>   9/22/2004, you wrote:
> 
>>Original poster: <sroys@xxxxxxxxxxxxxxxxx>
>>
>>This is a test to see if the list is working properly.  If you get this,
>>please reply to the list.
>>
>>Thank you.
>>
>>Chip Atkinson
>>
>>---------- Forwarded message ----------
>>Date: Tue, 21 Sep 2004 13:33:40 -0600 (MDT)
>>From: Chip Atkinson <chip@xxxxxxxxxx>
>>To: hvlist@xxxxxxxxxx
>>Subject: Test from chip
>>
>>Hi
> 
> 
> 
> .
>