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Re: OLTC maggy
Original poster: "boris petkovic by way of Terry Fritz <teslalist-at-qwest-dot-net>" <petkovic7-at-yahoo-dot-com>
Are you ready to accept the challenge and build one
*true* 6th-order OLTC system?
If yes,than you should agree to increase your power
supply capability to at least 800-900 W.
I'm quite sure ,there are capable people on this list
that would like to help you in this new TC adventure.
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
> Hi Steve,
> In general, the faster we can convert the low
> voltage high current primary
> energy into higher voltages and low currents
> somewhere (anywhere) else, the
> lower the losses will be. In a magnifier, the
> second stage may be useful.
> to store energy longer with lower loss while the
> final primary can convert
> that energy into sparks.
> There is a problem with getting even higher coupling
> than we have now. We
> just don't have enough turns to get in the say 0.7
> coupling area. But we
> may be able to hit one of Antonio's "sweet spots".
> This may also help the
> recharging problem you mention.
> A magnifier may also be easier to tune since we have
> more freedom to play
> with the secondary frequency in a three coil system.
> At 09:54 PM 4/4/2003 +0100, you wrote:
> >At 12:30 04/04/03 -0700, you wrote:
> >>Original poster: "boris petkovic by way of Terry
> >><teslalist-at-qwest-dot-net>" <petkovic7-at-yahoo-dot-com>
> >>In adition to my previous post:
> >>Has someone considered building "Off line 3 coil
> >The coupling in a typical OLTC (well, both of the
> OLTCs that exist) is so
> >high that it might as well be a magnifier. Terry's
> and mine both quench
> >after about 3 cycles, suggesting a coupling around
> 0.25. Having said that,
> >if the energy transfer were speeded up even more,
> like to 0.5 or 1 cycle,
> >it could reduce "gap" losses. This is a good thing
> because the IGBTs are
> >probably more lossy than a real spark gap. Are
> transfer times this fast
> >possible with a maggie? Maybe ACMQ could advise us
> >On the other hand, one of the problems I had with
> the OLTC was that the
> >secondary kicks back into the primary after
> turnoff, and partially
> >recharges the tank cap via the flywheel diodes.
> This interferes with the
> >charge circuit and makes the bangs smaller than
> they should be. The higher
> >the coupling, the worse this effect is. So on a
> magnifier it might be
> >unacceptable. It can be combated by just increasing
> the supply voltage,
> >but then if the cap were to start off fully
> discharged for some reason,
> >you'd blow something out.
> >Steve C.