Re: [TCML] VTTC-tuning. John got me started ;-) water resistor

[Bert Hickman <bert.hickman@xxxxxxxxxx>]

Hi Jim,

Jim Lux has provided some great, practical information on aqueous 
resistor design. You may also want to download another excellent 21 page 
paper about aqueous resistors R. E. Beverly III and Associates. Their 
application note should be titled "Everything you wanted to know about 
aqueous resistors but were afraid to ask"...  :^)

It covers the properties of a number of different salts (in addition to 
CuSO4 and NaCl) and compatible electrode materials. They also show a 
cross section of their R-100-10 aqueous resistor as well as useful 
design information, including resistance calculations, breakdown 
voltage, resistivity versus salt concentration and temperature, energy 
dissipation, etc. Solid, practical information from pulsed power experts.

http://www.reb3.com/pdf/r_appl.pdf

Bert
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Jim Mora wrote:
> Hi,
> I have made a few of these to dump the energy of a large discharge cap. Jim
> Lux has a write up on making them. He suggests using tygon or vinyl tubing
> filled with distilled water doped with copper sulphate which is in most
> hardware stores as a root killer. He used brass or copper bolts or brass all
> thread in the ends. I suppose for short storage life table salt would be
> fine as the resistance will change.
>
> Jim Mora
>
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
> Of David Dean
> Sent: Thursday, April 09, 2009 9:19 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] VTTC-tuning. John got me started ;-)
>
> Hi
>
> This disscussion reminds me of oh, long time ago now, didn't Marco Denicolai
>
> make some kind of fancy water resistor hung from the ceiling to do that? 
> Whatever happened to that project? I do not remember seeing any results.
>
> later
> deano
>
> On Thursday 09 April 2009 08:43:36 pm bartb wrote:
> >  This is a
> > physical limitation that should also be accounted for, but until we can
> > directly measure the top voltage at the terminal of a Tesla coil with
> > accuracy, then we can only make educated guesses.
> >
> > Take care,
> > Bart
>
>
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