Re: First light with new MMC PLEASE HELP!!

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

Greg,

My guess is that your coils were simply overcoupled, causing
a voltage breakdown between turns from racing sparks.  Once
the turns shorted, they heated from the current in the shorted
turn.  

John


>
> There is no doubt that it is a shorted turn!! This is quite strange. I 
> have wound two secondaries for this coil on separate peices of PVC. The 
> first used 0.95mm wire, and the second used 1mm wire. Both have failed 
> in much the same place. I meticulously sand, clean and coat the coil 
> before and after winding. I'm wondering if the extra current at the 
> base of the coil is warming the wire to a degree that causes premature 
> failure of the insulation??
>