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ERROR

Tesla List wrote:
> 
> > Subject: Re: DC TC
> > >Subject: DC TC
> 
> Subscriber: gweaver-at-earthlink-dot-net Tue Feb 18 22:49:11 1997
> Date: Tue, 18 Feb 1997 06:44:54 -0800
> From: Gary Weaver <gweaver-at-earthlink-dot-net>
> To: tesla-at-pupman-dot-com
> Subject: Re: DC TC
> 
> Tesla List wrote:
> >
> > Subscriber: rhull-at-richmond.infi-dot-net Mon Feb 17 14:34:13 1997
> > Date: Mon, 17 Feb 1997 07:53:16 -0500 (EST)
> > From: richard hull <rhull-at-richmond.infi-dot-net>
> > To: tesla-at-pupman-dot-com
> > Subject: Re: DC TC
> >
> > At 04:25 PM 2/15/97 -0700, you wrote:
> > >Subscriber: gweaver-at-earthlink-dot-net Sat Feb 15 15:43:29 1997
> > >Date: Fri, 14 Feb 1997 20:43:14 -0800
> > >From: Gary Weaver <gweaver-at-earthlink-dot-net>
> > >To: tesla-at-pupman-dot-com
> > >Subject: DC TC
> > >
> > >Has anyone built a DC powered Tesla Coil other than a tube type Tesla
> > >Coil?
> > >
> > >A tube tesla coil is basically a pulsating DC Tesla Coil.
> > >
> > >A car ignition coil is DC and operates from points that open and close.
> > >But it's not TC.
> > >
> > >I found an artical where someone built a large auto transformer that
> > >produced 42" sparks from a battery power supply.  It's not TC either.
> > >
> > >Many years ago I built a crude Tesla Coil using a DC power supply an 810
> > >tube and a signal generator to drive the control grid.
> > >
> > >It seem to me if a DC power source could be pulsed at resonate frequency
> > >it would work fine for a Tesla Coil.
> > >
> > >The next question is what is the best way to pulse a DC power supply
> > >with out a tube?  How about a DC power supply with an adjustable charge
> > >rate for the capacitor bank. The discharge rate threw the spark gap
> > >could be adjusted to find resonate frequency?  The capacitors would have
> > >to be sized correctly for the proper charge rate.
> > >
> > >With a Tesla Coils operating on a DC power supply it seem like the
> > >toroid or sphere on top of the secondary would charge up in one polarity
> > >like a Van De Graff generator.  Would the Tesla Coil produce longer and
> > >more powerful output sparks at resonate frequency from DC?
> > >
> > >For a TC operating on an AC 12K transformer the peak to peak voltage
> > >swing would be 19,968.volts.  For the DC power supply to be equal to the
> > >AC example the DC supply would have to be 19,968. VDC.
> > >
> > >Assuming it would be possible to pulse the DC power supply without a
> > >tube would the output sparks at the secondary be longer or more
> > >powerful?  The same?
> > >
> > >Gary Weaver
> > >
> > >Gary,
> >
> > All this was posted on this list over the Christmas period concerning my
> > work with DC powered TCs using spark gaps.
> >
> > Spark gaps are one of the best ways to use DC in a TC.  It is used exactly
> > as in an AC system.  DC power just allows one to get far form breaks per
> > second and pour in a lot more energy.  Greg Leyh's giant system is probably
> > the best example of a really big DC system.
> >
> > Somehow I get the impression you want to fire the system at the resonant
> > rate!!!!  Sorry, can't be done with any real energy delivery per pulse
> > (simple oscillator does this.) Also, the primary/secondary require a certain
> > magnetic interaction time to achieve best operation for spark output.
> >
> > There is no way to determine the Tesla coil's output polarity of charge when
> > producing long, hot sparks!  It is always positive!  This is not due to any
> > possible application method, schema, winding direction, phasing or polarity
> > of input power.  It is a matter of arc dynamics and the rate of energy delivery.
> >
> > Richard Hull, TCBOR
> 
> This is basically what I was getting at when I ask this question.  Maybe I
> wasn't very clear when I ask the question. I figured a DC power supply would
> discharge threw the spark gap just like an AC power supply.  Tubes or diodes
> can be used to make the DC.  I didn't want to use a tube as an oscillator.
> 
> I figured the dischage rate threw the spark gap wouldn't matter just like in
> an AC circuit.  The primary coil will be operation on pulsed DC not AC.  Just
> like a car ingition coil.
> 
> I had the idea if you could fire the spark gap at resonate frequency the TC
> would perform better.  But thats not so.
> 
> I was thinking about building a DC power supply and comparing it to an AC
> power supply of the same watt rating. I forgot one of the laws of physics.
> You can get any more power out than you put in.  1000 watts of DC or AC will
> still give the same output.
> 
> Gary Weaver

I usually don't correct my typing errors but I will this time.  The 2nd 
to last lines should read.  You CAN'T get any more power out than you put in.

Gary Weaver