[TCML] First light but something's still not quite right
dogbrain_39560 at yahoo.com
Thu Apr 10 21:04:39 MDT 2008
Try leaving out the Terry filter and see what happens.
Still no-go? Substitute a simple static spark gap in
place of the rotary.
Strike two? See if your transformer can fire a
Jacob's ladder. Maybe it is intermittently breaking
--- Andrew Nettles <anettles at hotmail.com> wrote:
> I got my 6" coil to fire up yesterday and although I
> was glad it worked the first try, I'm still having a
> It only ran for a few seconds and then quit. I had
> noticed before when messing with the safety gap that
> the GTO wire still leaked a bit even though it was
> rated for 15kv and that's what my transformer is
> rated. So I made sure there was adequate spacing
> between those wires and the grounds and then it
> worked again.....for a few seconds. The variac &
> nst test fine.
> I went to set the safety again and disconnected the
> tank circuit but didn't disconnect the rest of the
> filter. As soon as the safety stopped firing, I'd
> get a nasty hot arc between the two rows of
> capacitors in the Terry filter. So after bonking
> myself in the head, I isolated the safety gap and
> set it. At one setting I would plug it in and it
> wouldn't fire 3 out of 4 times and then I'd get a
> big arc - not the two little ones between the gaps.
> I backed it out a little more until I could plug it
> in repeatedly and not get that.
> So I have the wires separated, safety gap set
> properly...but it still stopped working. It seems
> like the hv is getting shorted to ground but I can't
> see what I've done wrong. Could it be a problem
> with the terry filter? The two rows of caps are
> separated by about 1-1/2 inches of space....I'm
> wondering if that's adequate or if that's the
> problem. I've ground every solder joint down so
> there's no sharp edges.
> My rotary gap seems to be set close enough to work,
> but I can't get the coil to run long enough to tune
> the tap or play with the motor phase.
> I'd be grateful for some input. And BTW thank you
> to all the people on this list who helped me when I
> needed it - I'm just about there.
> - Andrew Nettles, Fort
> Tesla mailing list
> Tesla at www.pupman.com
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