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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.
> -----( )---( )-----
> \ ( ) /
> \_) (_/
>
>
>