Stealth Tesla Coil
I finally was able to test my spark gap with the big ferrites beads I got
from Digi-Key. Much to my surprise, they actually do seem to have a
significant effect on the high frequency gap noise. They did not seem to
do much for the ~40MHz signal, but the multi GHz signal seems like it was
I have no real good way to know how this actually affects RFI and TV
interference since I really didn't have a problem before (cable TV and all
that) but I think this could possibly be a big help. Definitely worth
I posted a long JPG graphic file at:
that shows the before and after scope pictures and the ferrites and gap setup.
One indication that this may really make a difference is that I have
always used the initial spike pulse to trigger my scope. For the first
time EVER, I had trouble getting the scope to sync with the ferrites in place!
I have contacted Richie off list about getting him some of these ferrite
beads to try in his system...