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Re: Now, How does a coil really work??
Bert,
I agree, it was a good question and a good answer. So many times I've seen
coilers using static gaps but they always assume 120bps (60hz) or
100(50Hz). Most
really don't know and assume this. I'm curious how often we can fire the gap
during a cycle? Is there a major limitation beyond electrical or mechanical
stresses? My first thought at this I came up with 4 x main freq., but the
more I
think about this, I bet the gap could be fired quite a few times during a
cycle.
Bart
Tesla List wrote:
> Original Poster: Bert Hickman <bert.hickman-at-aquila-dot-com>
>
> Tesla List wrote:
> >
> > Original Poster: Michael Tucknott <Michael.Tucknott-at-virgin-dot-net>
> >
> > Tesla List wrote:
> >
> > > Original Poster: Bert Hickman <bert.hickman-at-aquila-dot-com>
> > Hi Bert
> >
> > Big Huge maggie sized snipp
> >
> > > Increasing the break rate increases the power going into the
> > > streamers as well as reducing the cool-down time between bangs. Both
> > > factors tend to increase streamer length.
> >
> > If life is this simple how does one go about increasing the break rate
> > with
> > a static gap setup??
> > With a rotary gap I assume you just increase the rotor speed,But there
> > must
> > be a limit to break rate and rotor speed?.
> >
> > More help needed
> >
> > Cheers Mike Tucknott
> >
>
-----------------------------------------------------------------------------
> > "He tames the thundering bolt of jove and annihilates time and space"
> > Nikola Tesla 1906
> >
>
-----------------------------------------------------------------------------
>
> Mike,
>
> Good question! The true breakrate will be governed by how quickly your
> tank cap can be recharged from your power source. This can be
> accomplished in two ways: increasing recharge current, or reducing gap
> breakdown voltage. If you boost the recharge current (by adding more
> parallel NST's or by reducing the ballasting inductance on a PT or
> pig-driven system), your tank capacitor can recharge more quickly, and
> you'll reach sufficient voltage to fire the static gap more quickly.
> Under these conditions, a static gap system, when adjusted to fire at a
> point significantly lower than the incoming mains peak voltage, will
> automatically increase its breakrate. In a rotary gap system, increasing
> recharge current will permit you to increase rotational speed and still
> be able to fire at every electrode presentation.
>
> BTW, it's quite easy to improperly set up a rotary gap system such that
> the mechanical break rate (the rate at which you have successive
> electrode presentations) exceeds the rate at which the tank cap can be
> recharged. In this case the gap will fail to fire on a given
> presentation, and will most likely fire on the next presentation. This
> mode of operation can cause excessive voltage buildup by the time the
> NEXT electrode presentation occurs, and can result in premature death of
> NST's.
>
> Safe coilin' to you!
>
> -- Bert --