[Prev][Next][Index][Thread]
Re: Coil success on first big run - but (help) safety gap fires alot!
In a message dated 4/21/99 5:34:00 AM Mountain Daylight Time,
tesla-at-pupman-dot-com writes:
> Just to say I've got my coil up and running and am working on tuning. I
> >have got 29 inch sparks for 1000w in, so it's only a start. It was
> >really beautiful once it got dark though! I was wondering how critical
> >the tuning was - would say 1/2 a 1/4 turn adjustment on the primary make
> >a lot of difference? I have it at 6.5 turns at the mo with a small
> >topload (a garden soil riddler!). I may try going for the big 24 inch
> >toroid tomorrow, but I will need to set up a stike rail before this.
> >
With so few turns, 1/4 of a turn could make a significant difference. My
setup tunes at about 10 turns and is fairly sharp in tuning. I use a tuning
coil for fine tuning it. It has 10 turns and measures about 1 uH, or about
the equivalent of one outer turn if all 10 turns are tapped. I found this to
be much easier than trying to tap around the primary coil.