Re: HV Capacitors - PTFE (fwd)

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---------- Forwarded message ----------
Date: Thu, 23 Sep 2004 11:20:56 -0500
From: Dr. Resonance <resonance@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: HV Capacitors - PTFE (fwd)


Hi Carl:

We sell MMC (STK) caps for $2.00 each.  Units can be assembled in series for 
HV and then parallel for more cap value.  Basic $2 units we stock are .015 
uF at 2 kV DC.  We have 1,500 in stock at this time.

These are double end foil type that are designed for high peak current 
applications.  I have used them in Marx circuits, Tesla coils, and 
Cockroft-Walton voltage multiplier circucits up to 800 kV.

D.C. Cox

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
>
>
> Our new local HV group is finding the securing or producing reliable,
> high capacitance capacitors at low cost for working in the 10's of kV
> range a serious challenge.
>
> Commercial products found so far are completely out of the question in
> cost.  So much negative prose on the net about plate capacitors makes
> them unattractive.
>
> The obvious use of 20 or 30 free MOT caps in a parallel/series array
> doesn't appear to be used so I'm assuming there is a dielectric
> breakdown problem associated with that.
>
> In one of my other lives, I own a business that supplies chemical,
> tubes, fuse, etc. to hobbyists who build their own fireworks.
> Consequently, I have a fair amount of 400 micron PTFE (Teflon) powder on
> hand.  Somewhere on the net that I cannot relocate, it seems there
> information on the use this material in some very hot 'bucket' type
> capacitors.
>
> Any ideas would be appreciated.
>
>
> Carl Litton
> 901-374-5747
>
>
>
>
>