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Re: Peak cap voltage, was 12kV, 30ma TC specs, 42" spark
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Tuesday, September 16, 1997 2:39 PM
To: tesla-at-pupman-dot-com
Subject: Re: Peak cap voltage, was 12kV, 30ma TC specs, 42" spark
Hi Jason,
> From: Jason Judd[SMTP:Jason.Judd-at-anu.edu.au]
> Sent: Monday, September 15, 1997 7:43 PM
> To: Tesla List
> Subject: Re: Peak cap voltage, was 12kV, 30ma TC specs, 42" spark
<snip>
> I am just starting to get good results with my 6" 15Kv 60MA setup. The tank
> capacitor is 14 nF (for 50Hz) rolled poly (two series 28 nF caps). The best
> I have done so far is 35". I am using a tripple gap system quenched with a
> microwave oven fan. What I have found is that to get the long sparks the
> gap must be made quite wide to take advantage of the resonant charging.
> When I got to about 12MM (1/2") the terminals from my two 15Kv 30 MA
> tranies started to arc to the case which is about 10MM from the edge of the
> HV insulator. I supose this is a good saftey gap and may well have saved my
> transformers.
>
> My question is how far should I open the gap to take advantage of resonant
> charging ? he gap has never miss fired yet. It apears to me that I should
> set the gap to fire around the 30 KV mark. I'm not game to do this because
> my caps were not designed with this voltage in mind , but in the future
> they will be.
What are your transformers designed to survive? You can always get
big sparks from neons if you push them.
Malcolm