Re: [TCML] CW magnifier

[Carl Noggle <cn@xxxxx>]

Hi---

Another advantage of the pulsed coil over the CW coil is that since the 
same amount of power is concentrated in short time periods, much more 
power is available to make higher voltages and bigger sparks.  The duty 
cycle (% of time that the power is actually flowing) is less than 1% for 
the average coil.

---Carl







Thanks everyone for the feed back.
> Yes, I take your point about the CW coil already increasing the 
> coupling, so your probably right... No real advantage to going to a 
> magnifier...
> My main reason was the ever search for longer arcs! I have a large CW 
> coil (valve driven) that is not putting out the arc length I need, so 
> I am just looking for ways to improve it...
> I am not ready to go down the full electronic driven path at this 
> point and I dont think I have the knowledge to pull it off anyway.
> So I will stick to my valves, and look at pulsing it to improve output...
>
> Thanks,
> Carlos
>
> ----- Original Message ----- From: "Steve Ward" <steve.ward@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Friday, April 01, 2011 7:21 AM
> Subject: Re: [TCML] CW magnifier
>
>
> > Carlos,
> >
> > What would be the reason for going to a magnifier?
> >
> > Some of the earliest SSTCs were essentially magnifiers.  The drive was a
> > ferrite transformer that was used to step up a few hundred volts from a
> > silicon bridge and "base feed" the bottom of the resonator from the HV
> > output of the transformer.  This method was generally abandoned for the
> > typical primary coil drive as the HV ferrite transformer is 
> > non-trivial to
> > design properly.  Anyway, there's no reason you couldn't run a more
> > "typical" magnifier from a CW driver, but i also cant think of any 
> > reason
> > this would be beneficial over a 2-coil system.
> >
> > Steve
> >
> >
> >
> > On Thu, Mar 31, 2011 at 2:33 AM, 
> > <lightningfor@xxxxxxxxxxxxxxxxxxxxxx>wrote:
> >
> > > Hi
> > > I am just wondering if anyone knows if a "magnifier" style tesla 
> > > coil can
> > > be built using CW, or does the principle only work with pulsed coils?
> > > My understanding of them is they perform best with a low impedance 
> > > driver
> > > (primary tank/seconday coil), with a very short duration (fast 
> > > quenching)
> > > pulse...
> > > Anyone tried CW with it...?
> > >
> > > Carlos
> > > _______________________________________________
> > > Tesla mailing list
> > > Tesla@xxxxxxxxxx
> > > http://www.pupman.com/mailman/listinfo/tesla
> > _______________________________________________
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> > Tesla@xxxxxxxxxx
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>
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