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Re: Test Cap, dry/oil




From: 	D.C. Cox[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: 	Monday, December 01, 1997 3:49 PM
To: 	Tesla List
Subject: 	Re: Test Cap, dry/oil

to: Gary Weaver

If you need some small inexpensive caps for a desktop oscillator we have
some reconstituted mica units that are extremely small.  They measure
approx 3/4 inch wide x 1/4 inch thick x 2 1/2 inches long.  Value is .005
MFD (5000 pF) with a working rating of 9 kV.  If your power supply is 10 kV
(OBIT) they seem to work fine at this level but recommend going to
series-parallel if you are running at 12 kV or higher.  Cost is $22 with
$3.50 per pc for shipping.

DR.RESONANCE-at-next-wave-dot-net


----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: Test Cap, dry/oil
> Date: Saturday, November 29, 1997 7:23 PM
> 
> 
> From: 	Alfred A. Skrocki[SMTP:alfred.skrocki-at-cybernetworking-dot-com]
> Sent: 	Saturday, November 29, 1997 12:17 AM
> To: 	Tesla List
> Subject: 	Re: Test Cap, dry/oil
> 
> On Thursday, November 27, 1997 10:16 PM gweaver
> [SMTP:gweaver-at-earthlink-dot-net] wrote;
> 
> > ... I have been thinking about making a dry poly rolled cap for a small
> > portable desk top TC and did this test to see the results of a dry cap
> > on the TC. The oil makes a big inprovement in the discharge sparks.
> > The discharge sparks did not get any longer but the power output
appears
> > to be about double.  Much thicker and hotter sparks.
> 
> This is what everyone was teling you would happen ie. the oil decreases 
> coronal leakage from the capacitor thus more power is going to your Tesla

> coil. If you are unshakeably intent on masking a dry polyethylene 
> capacitor, you may be interested in an idea I had for such many moons
ago. 
> My idea was to build the capacitor not only out of the square sheets of 
> polyethylene and the aluminum with it's tabs but to add a die cut piece
of 
> polyethylene that would fill in all the space around the aluminum sheets 
> and assemble the capacitor in a vacuum box to eliminate any air and when 
> done to gradually heat the capacitor while compressing it in an
improvised 
> press. The result would be that all the polyethylene would be bonded 
> together around the aluminum plates. I personaly found this to be too
much 
> work and just went on to oil immersed polyethylene caps.
> 
>                                Sincerely
> 
>                                 \\\|///
>                               \\  ~ ~  //
>                                (  -at- -at-  )
>                         -----o00o-(_)-o00o-----
>                            Alfred A. Skrocki
>                    Alfred.Skrocki-at-CyberNetworking-dot-com
>                              .ooo0   0ooo.
>                         -----(   )---(   )-----
>                               \ (     ) /
>                                \_)   (_/
> 			       
> 
>