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Re: noob question

Original poster: Shaun Epp <scepp@xxxxxxx>
I had that same problem with the 12" coil plans from information Unlimited. It wasn't there fault though, it was mine. I had grounded one of the outputs of the secondary of the transformer, which was NOT suppose to be grounded, not for the transformer I used. I did this when I was a teenager and didn't know better! Oops. With a new transformer and removing ground, things worked better. My spark gap would also foul, it was a single gap made from brass plated bolts, also not good.
Don't ground your primary coil circuit, this should help. A 6Kv transformer is alittle small for this coil, I used a OBIT, 10Kv 23mA (oil burning ignition transformer). The Case of the transformer should be gounded though. 

Shaun Epp


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Friday, March 03, 2006 12:13 AM
Subject: Re: noob question



Original poster: "Harold Weiss" <hweiss@xxxxxxxxxx>

Hi Ben,
I started out with the same set of plans and had the same problems. Try rewiring with the gap in parallel with the NST and the cap in series with the primary. On every coil I built with the cap in parallel with the NST, I had that problem. 

David E Weiss

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, February 27, 2006 1:38 PM
Subject: noob question



Original poster: ben eells <squeels2171@xxxxxxxxx>
I've been looking for quite a while to find an answer to this question and haven't had any luck. Please don't flame me too bad. I've built my first coil based on the schematic for the 12" spark coil from information unlimited. I can run my coil for maybe 20 seconds or so (depending on the width of my gap) but eventually the spark gap stops firing and the coil stops working and won't start again until I turn it off and back on again. I've tried shortening the spark gap but the problem will persist and the more I try to run the coil the sooner the gap stops firing. Can anyone explain to me why this happens and what can be done to keep the coil running while the power is on. The only explaination I have been able to come up with by myself is that my capacitor is slowly dieing (I've had to replace the capacitor once already) and the longer I run it it can't produce the breakdown voltage.