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Re: 6" Coil Problems
Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Esondrmn-at-aol-dot-com>
In a message dated 9/23/02 9:33:56 PM Pacific Daylight Time, tesla-at-pupman-dot-com
- snip -
> I believe the soldier shorted out one half of the MOVs, which lowered the
> voltage at which they clamp. This level was under half of my NSTs voltage, so
> they were sitting there, dead short to ground. I guess the 60mA for a while
> burned it up. When the one failed, the same scenario occured, and the second
> MOV failed. Does that make sense to every one?
> After that I connected the NST straight to the Spark gap, with no filter, cap
> or anything. It let me use all 11 or 12 (I forget the total) gaps. Pleasing,
> that my NST was still OK, I took out the actual filter, but left the power
> resistors, and the safety gaps in circuit. That gave me max of 7 gaps, any
> more and the safety gaps would fire. Sounds good to me.
> Now that makes me wonder, how long has that short been in the filter? Could
> that have been giving me the less-than-satisfactory performance before? I
> would like to try the coil now, but I am a bit worried about the filter not
> being in there. I still have the safety gaps (which seem to work now) and the
> power resistors in place, and I know that some people use NSTs with out any
> protection at all. But hey, I'm 14, and poor; I have built a Tesla Coil and
> just bought an electric guitar, so I dont feel like burning up this NST.
> Would it be ok to run the coil the way it is?
> I thank you for reading this, and hope to get this working right...
> Jonathon Reinhart
I don't think anyone can say it is ok to run the neon sign transformer without
the full protection circuit. Stange things happen. I do run my system with
just power resistors and safety gaps. Using multiple static gaps, I make sure
to keep the total gap width somewhat narrow - in the range of .20" to .25".