Re: Disappointing Results

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Tim J by way of Terry Fritz <twftesla-at-qwest-dot-net>" <digital_raven45-at-hotmail-dot-com>




>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Disappointing Results
>Date: Sun, 10 Mar 2002 20:06:10 -0700
>
>Original poster: "David Kyle by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><dave-at-kyleusa-dot-com>
>
>
>I fired up the desktop model T spark coil powered coil with very 
>disappointing
>results. It appears that the pulse caps I am using simply short out the 
>spark
>coil as I get no spark across my spark gap even when it is nearly closed. 
>So
>here is the question: is it my choice of capacitor or have I selected too 
>high
>a capacitance value for such a low power coil.
>
>
>
>I know very little about the pulse caps I am using other than they are 
>rated at
>.05uf at 10KVDC. I put 5 in series to yield a .01uf at 50KVDC. The cap does
>measure out at the correct value and does not have measurable resistance 
>with a
>multi-meter. There is no question that when the cap is put across the coil 
>it
>simply shorts it out.
>
>
>
>The spark coil might be good for about one milliamp but I had not expected 
>.01
>would short it out. What value might be more appropriate? Would a doorknob 
>cap
>be a better solution for a very low power coil?
>
>
>
>Dave
>
>
>
>=========================================
>Dave Kyle
>Austin, TX USA
>Email: dave-at-kyleusa-dot-com
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What sort of transformer are you running? If your using small milliamperage 
then go with a SMALL cap, say maximum 15 nF.
50nF is WAY WAY too big for small coil as you will never charge it to its 
max potiental!!!