[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [TCML] Strike rail hits and loud bangs

In my experience, loud bangs are the safety gaps firing, due to the presence of a too-high cap voltage, so the safety gap discharges the bang instead of the main gap.  If the safety gap is firing just because of a primary strike, I wouldn't think that it would be nearly so loud, as the current is many times smaller than if the gap is discharging the primary cap into the tank circuit.  Could it be that there was a too-high cap voltage, the safety fired for that reason, and the larger than normal bang caused a longer than normal secondary spark to strike the strike rail?

Regards, Gary Lau

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of David Nelson
> Sent: Thursday, October 02, 2008 10:24 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Strike rail hits and loud bangs
> Is there a chance that the loud bang is a spark between bottom of the
> secondary and the inner turn of the primary? Overcoupling. I had this and I
> removed half a turn from the inside of the primary and re-routed the wiring
> (down and out) to fix the problem. I kind of feel that performance went down
> slightly, but no more loud, annoying and scary bangs.
> Dave Nelson
> ----- Original Message -----
> From: "Stephen J. Hobley" <shobley@xxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Wednesday, October 01, 2008 11:37 AM
> Subject: [TCML] Strike rail hits and loud bangs
> We have a fairly simple coil using a 60ma NST. Recently I changed the tap
> point on the primary and by chance hit a really sweet spot.
> Usually the Tesla Tuner is pretty accurate and gives good results, but in
> this case it did not indicate that this tap point was a good one.
> The streamer length has increased by at least 50% - but we did notice some
> rather worrying "bangs" from the Terry filter spark gap when the strike rail
> is being hit. Is this normal?
> Is it possible to tune a Tesla coil into a self-destructive state?
> I would take some pictures, but the darned thing scares me to death...
> :-)
> Steve
Tesla mailing list