RE: [TCML] RE: Splicing wires - Secondary Coil

["McCauley, Daniel H" <daniel.h.mccauley@xxxxxxxx>]

Hi Deano,

Thanks for the info.  That is similar to what i experienced.  I do get that green flash temporarily, if it decides to go catastrophically.

Perhaps its a slightly higher resistance in a "bad" solder joint that is heating up and causing the wire to break??

Interesting point.

Daniel McCauley
http://www.easternvoltageresearch.com
DRSSTC, SSTC, Flyback Kits and Components!
 



-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of David Dean
Sent: Monday, May 03, 2010 10:05 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] RE: Splicing wires - Secondary Coil

HI Daniel

This may or may not be applicable, but long time ago when I first discovered the TCML, I wound a secondary on an old form recycled from a previous coil. This secondary was made from recycled wire from a solenoid coil and finished with wire from a small motor with a splice about 1/3 up from the bottom. This was a small coil 2 3/4" O.D. X 13" form, with only 9" wound for want of more wire. The coil worked fine on a 9/30 NST and salt water/ beer bottle caps. However the NST did not last very long, and I happened to luck into a PIG. With the pig ballasted by a welder, and a single blown static gap, I put the power to the small coil. It gave fantastic results for a coil it's size, for a few seconds, then Kaput. It blew the solder right off of the joint where the two parts of the winding were spliced. It appeared the solder joint got hot enough to melt the solder, then arced at that point vaporizing the solder, because there was a blue-green flash at that point when the coil died.

later
deano

On Monday 03 May 2010 07:20:09 am McCauley, Daniel H wrote:
> Now I certaintly don't claim to know all the theoretical and 
> mathematical  explanations to why this occurred, and I'm certaintly 
> open to suggestions  from other people regarding this, but I do know 
> that they were all failing  at this point, and the only thing I can 
> think of is some sort of impedance  discontinuity due to the splicing causing this problem.
> 
> So again, its my opinion that if you have a self-resonant system, i 
> don't  recommend splicing your secondaries.
> 
> Daniel McCauley
> http://www.easternvoltageresearch.com
> DRSSTC, SSTC, Flyback Kits and Components!
> 
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