Re: coil spark size??? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 11 Aug 2007 14:51:31 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: coil spark size??? (fwd)

The LTR did not kill the OBIT. John is showing that running at resonance 
killed it (just like a fragile NST). He only mentioned that the tranny 
was rather small to charge an LTR size cap (which would have been about 
9nF for the 10/23 OBIT.

Bart

Tesla list wrote:

>---------- 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> 
>
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>>---------- 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 
>>
>>
>>
>>************************************** Get a sneak peek of the all-new AOL at 
>>http://discover.aol.com/memed/aolcom30tour 
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>>
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