Re: 500 KV DC (fwd)

[<sroys@xxxxxxxxxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 22 Sep 2004 20:56:22 -0300
From: Antonio Carlos M. de Queiroz <acmdq@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Cc: hvlist <hvlist@xxxxxxxxxxxxxxxxx>
Subject: Re: 500 KV  DC (fwd)

High Voltage list wrote:

> From: Bert Hickman <bert.hickman@xxxxxxxxxx>

> 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).

And how would someone insulate the 700 kV, or 500 kV? With 700 kV
you need a sphere with about 50 cm of diameter just to avoid 
ionization of the air.

Antonio Carlos M. de Queiroz