Re: Carbon tracking?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Simon, 

Check for any burned areas. Carbon tracks can occur inside and outside of
secondary's. Resistance is one way to do it. You can use any program that shows
DC resistance of the coil to double check. My JavaTC program will do this as
well - simply insert you secondary info and click the calculate button. No
other parameters are necessary for the resistance value. It's also possible
that there is a carbon track without the short, so visual inspection is always
a good idea. 

 <http://www.classictesla-dot-com/java/javatc.html>http://www.classictesla-dot-com/
java/javatc.html 

Take care,
Bart 

Tesla list wrote: 
>
> Original poster: "Simon Yorkston by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> <quantumx-at-ozemail-dot-com.au> 
>
> Hi all. 
> After reading Bart's reply, I was a little curious. I'm not actually sure of 
> carbon tracking, so any help / advice about it would be appriciated. 
>
> Also mentioned was a secondary short. How woul I go about checking it? [Eg, 
> what resistance would a full secondary have / is there another [simplish] 
> way to check?] 
>
> Thanks for your advice, 
> Simon 
>
> >Just a thought Simon, 
> > 
> >When you made changes to the primary, you physically moved it. Is it 
> >possible that you have your primary 
> >mounted on wood? Carbon tracks occur on the surface or within wood. When 
> >this occurs, power to secondary 
> >plumits. When you moved it, you may have moved the primary away from a 
> >possible carbon track but decreased 
> >coupling greatly. It's hard to say and just something that is always worth 
> >checking. 
> > 
> >Most of the programs will get your tune point very close. If you are 
> >getting really poor performance, then 
> >there is something else going on (connections, high losses due to a shorted 
> >turn in the secondary or carbon 
> >tracks through the primary form, or a component which includes main 
> >components and other secondary 
> >components such as filters). It seems as though something is stealing power 
> >and you need to track down the 
> >thief. 
> > 
> >Good luck, 
> >Bart 
> >