[TCML] bipolar coil
FutureT at aol.com
FutureT at aol.com
Sat May 3 12:38:24 MDT 2008
I took those issues you mention into consideration. Twin coils
give spark lengths that are 1.4 times longer than regular coils
for a given input power. If I used my formulas without accounting
for it being a small coil, then the figures would have been 40" for
the 9/30 and 56" for the 9/60. I reduced this to 35" and 49" respectively
since it's a smaller coil. Possible it should be reduced a little more to
32" and 45". But in any case it should do better than the
figures you mentioned. Just my opinion.
In a message dated 5/2/2008 10:20:01 P.M. US Eastern Standard Time,
bartb at classictesla.com writes:
>Your spark lengths are good for say 3" or larger diameter coils, but
>this coil will suffer. It's simply small and that is a big problem with
>spark lengths. It seems there is a point (and I would put that point
>value starting below 3") where spark length decreases for the same power
>input. I agree that a 9/30 would be fine for this coil. But spark
>lengths will likely be well below 35". More like 20" to 25" at best. I
>"suspect" energy storage capacity is partially why (there are limits,
>and h/d & size literally strangle the output). That's my message.
>Granted a couple coilers have made small coils work ok, but still, the
>majority of small coil performance I've seen says "build a bigger coil".
>Just my opinion.
>> That's a good point. Even a 9x30 should give 35" sparks
>> between the two toroids. A 9x60 should give almost 49" sparks
>> between toroids. I accounted for the low voltage and thin wire,
>> and possible few primary turns. Otherwise the sparks would
>> be even longer.
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