Re: Hello, delurk and question

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

Original poster: "Frank Van der Auwera by way of Terry Fritz <twftesla-at-qwest-dot-net>" <fvdauwer-at-uia.ua.ac.be>


Hmm, thanks for trying to help, guys, but in my question ' > Anyone any
idea as to how to avoid the primary being
> destroyed by the extra sparking? ', i was talking about 
the IGNITION COIL doing occasional sparks from its housing 
to the terminals of its primary.

so, 

>Put a strike ring around the top of the primary - the arc 
>will hit the ring and not the primary
and 
> You probably talk about the secondary the tall coil with 
> many turn and if by "extra sparking" you talk of racing 
> spark ( small spark running on the side of the secondary ) 
> put a little more space between the primary and the 
> secondary coils and check your tuning.

are not applicable here, that would work if it was a tesla 
coil we were talking about, but as an ignition coil is a 
sealed unit, i can hardly change its conformation.

I wonder WHY these sparks are appearing, BTW. As an IC has 
the 'ground' (metal body of the unit) connected to one side 
of its secondary, i suppose these sparks are a way of the 
high tension, if it cant arc between the two terminals of 
the secondary for some reason, to try to find a way to 
earth ground via the primary circuit , the dimmer and the 
220 volts line. Not a good thing. Would earthing the body 
help? Do i need to add something to the circuit? Any help 
is welcome!

Anyone who has played with this kind of circuit experienced 
these 'flyer' sparks to the primary terminals?


Frank Van der Auwera.

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