On 10/15/20 6:50 AM, Douglas Johnson wrote:
Thank you both, I think I know where to go from here on my current build. My project is a larger bipolar than I have built to date. Secondary is 3.5" dia. X 24" with .015 mag wire. By the time I built the primary it was 6" long and I was getting "runners" on the secondary. I think my fix will be going to a flat spiral primary.
On a bipolar, it's hard to control the coupling on a solenoidal primary sliding it one way or the other doesn't change the flux distribution very much.
I'm not sure a flat is any better. _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla