[TCML] Racing sparks - question
danniken at comcast.net
Sat Aug 7 23:38:54 MDT 2010
otmaskin5 at aol.com wrote:
> Hi coilers. Life's been busy the last few months & not much time for
> coiling, although I still read the pupman postings. Anyway, I did
> find the time to roll out my coil tonight & run it, but I kept
> running into on an old problem I've had in the past. Using a screw
> or ball bearing for a breakout point, my 15/60 coil produces good
> sparks, and the coil runs well with no problems. If I remove the
> breakout, I still get sparks from the toroiod, but eventualy start
> getting racing sparks. Without the breakout point, the coil seems to
> have no trouble producing sparks from the topload even fairly lower
> variac voltages, but when I increase variac the voltage to the 120 or
> higher I eventually get the racing sparks. I've played around with
> raising the secondary to reduce coupling, but so far, I'm still
> getting racing sparks if I dont use a breakout.
> If it's just a matter of over coupling, I'll have no problem
> gradually raising the secondary to eliminate the problem. However
> this will be somewhat involved as I have to removing the secondary's
> end cap & adding a longer mounting bolt. Before I go much further, I
> wanted to see if any of you guys had other suggestions on what might
> be causing the racing sparks when I don't use a breakout. I'd really
> like to be able to run the coil without using a breakout.
> FYI, I have a 6 X 20.5 toroid and a 3 X 12 toroid underneath it.
Without knowing more specifics on your coil, you might try a higher
breakrate, or a larger secondary.
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