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Re: [TCML] bipolar coil



Hi Woo,

Dr. Jeff must be using a small cap size for the turns. This is an actual bipolar coil also, unlike what I think Kris is building. Dr. Jeff's bipolar is a nice little coil! I built one similar in size, although it was not used as a bipolar coil, but rather a hv source for a Seibt coil.

http://www.classictesla.com/seibt/Img_2870.jpg

I've been wanting to turn this thing into a self-contained bipolar coil (however I need to replace the wooden primary runners with something else).

Take care,
Bart

dr.hankenstein@xxxxxxxxxxxxx wrote:
Kris,

Here is a picture of Dr. Jeff's small bipolar coil: http://www.drspark.org/images/jeffbipolar/Dsc_0185.jpg  If I recall correctly, he's using a 9kv / 30ma neon sign xfmr with a Sangamo mica transmitting capacitor and a 5-break stationary spark gap. Tuning doesn't seem to be very critical. Secondary is rather small, maybe 2" x 12" or so. Small coils are alot of fun!

Woo
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