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Re: Neon Tranformer bypass caps.
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To: tesla-at-grendel.objinc-dot-com, KLINEDA-at-univscvm.csd.scarolina.edu, QUANTUM-at-univscvm.csd.scarolina.edu, WMEYER-at-scientia.up.ac.za, bhaley-at-shore-dot-net, frerichs-at-zfe.siemens.de, froula-at-cig.mot-dot-com, haba-at-snakemail.hut.fi, jetter-at-ix-dot-netcom-dot-com, scott-at-csustan.csustan.edu
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Subject: Re: Neon Tranformer bypass caps.
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From: Esondrmn-at-aol-dot-com
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Date: Tue, 14 Nov 1995 13:29:27 -0500
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In a message dated 95-11-14 00:05:42 EST, tesla-at-grendel.objinc-dot-com writes:
>Subject: Neon Tranformer bypass caps.
>
>
>I have four, no-PCB, oil filled transmitter bypass caps rated at 25KV each
at
>.012 uF. I would like to use these a bypass caps on my Tesla filter board.
>
>With my neon transformer supply, I planned on using two caps in series on
>each
>side of the neon to ground. This should give a DC voltage rating of 50 KV
>at .006 uF. From what I have read, the capacitance is a bit high for a
neon.
>Will there be any problem with destructive oscillations in the neon
secondary
>with this arrangement.
>
>The France neon sign transformer applications manual warns against long HV
>cable
>runs, due to the effectives of the capacitance on "the tranformer insulation
>system". I wonder if there will be a similar problem here.
>
>Thanks for any help!
>
>Don Froula
Don,
.006 mfd will be too high for RF bypass capacitors. The idea is for the
bypass caps to offer a low impedance path to the RF. You want something in
the range of 300 to 1000 pf.
Ed Sonderman