Re: [TCML] Poly thickness

[Sfxneon@xxxxxxx]

In a message dated 7/1/2008 10:10:55 P.M. Central Daylight Time,  
dfb25@xxxxxxxxxxx writes:
 
<< with a 'tight' wound coil,..is a coating really helping  much?  The 
windings are touching... >>
 
Granted, the best reason to coat a coil is to hold the windings in place  and 
to make it more durable. I've experienced turn to turn arcing in a  coil that 
has not been coated, but the wire had less than  perfect insulation to start 
with.
 
This may be just speculation, but I believe it helps in the  long run to 
exclude all air from between the turns. It probably doesn't matter  much on 
smaller power coils, but I would think that it would give a slight  edge to larger 
coils that are pushed to their absolute maximum. The air  around the top of the 
coil can become ionized and more conductive, and can  exploit even the 
smallest imperfections in the enamel insulation. Even a tight  wound coil will have 
air molecules between the windings which may become  partially conductive when 
ionized. 
 
Tony Greer





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