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re: no Terry filter

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Dan and Dave,

If one does everything right, the filter is probably not needed since it was made for people that don't do everything right :o))



At 01:27 PM 4/29/2005, you wrote:

My coiling experience with NST's is aligned with Dan's. I started wondering, if
I use LTR value capacitors, and I have my spark gap right across the
transformer output, and my gaps are never opened more than .200", then I should
still have safety gaps upstream of the primary gap? How is the safety gap going
to drop voltage spikes that the primary gap doesn't handle, if it is in
parallel to the main gap? The safety gap has to be opened up more than the
primary gap, or it will be firing more than the main gap, true?

Dave Goodfellow

> >Subject: RE: No Terry filter > > > > > >>Original poster: "Mccauley, Daniel H" <daniel.h.mccauley@xxxxxxxx> > >>For what its worth, i have built many NST powered tesla coils ranging > >>from 4kV/20mA up to paralleled 15kV/60mA NSTs. > >>I NEVER use safety gaps or terry filters and never had a failure. I > >>also push my coils particularily hard. > >>I did build a Terry filter once, but sold it right afterwards and never > >>really used it. > >>My 0.03 cents > >>Dan > >