Re: coil spark size??? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 11 Aug 2007 22:26:38 +0000
From: jhowson4@xxxxxxxxxxx
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: coil spark size??? (fwd)

yea, I am trying not to ruin the obits that I have so no LTR operation for me it sounds like yours did not take it to well.  I think that I will do some tinkering after I get back from my vacation and if i still can't get anything more out of it I will repost with more detailed specs that I don't have at the moment.  
Cheers 
-------------- Original message -------------- 
From: "Tesla list" <tesla@xxxxxxxxxx> 

> 
> ---------- Forwarded message ---------- 
> Date: Sat, 11 Aug 2007 15:24:26 EDT 
> From: FutureT@xxxxxxx 
> To: tesla@xxxxxxxxxx 
> Subject: Re: coil spark size??? (fwd) 
> 
> OBITS are somewhat fragile. They should have a Terry Filter to protect them 
> especially if they are pushed. Using a single 10kV, 23ma OBIT, and a small 
> 0.0015uF mica cap, and a 4 section silver faced static gap, I got 13" 
> sparks. 
> 
> Later I tried using a resonant value cap, and got 25" sparks or so. I think 
> I used a rotary gap in this case. The OBIT was destroyed within seconds 
> and sparks were jumping across the porcelain HV bushing. LTR operation 
> did not seem to work well with this OBIT if I remember correctly. 
> 
> John 
> 
> 
> 
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