RE: [TCML] Inductor design program?

[William Noble <william_b_noble@xxxxxxx>]

I thought the "standard" way to do this was to use an old stick welder - you get a variable inductor with plenty of current handling capability - is this no longer the "preferred" method?  Old welders seem to sell cheaply - probalby about what you'd have to pay for the wire alone if you bought wire at full retail
 
> Date: Wed, 21 Apr 2010 09:12:46 -0700
> Subject: Re: [TCML] Inductor design program?
> From: resonance@xxxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> 
> You're right.
> 
> The easy way is to use a substantial core cross section (I use 4" x 3 5/8")
> from an old stripped pole xmfr core, then wind on 110 turns of #8 AWG. Hook
> it up to your pig (each one is slightly different), and set up a small horn
> gap (climbing arc) plus an ammeter in the pri circuit with your reactor.
> 
> Run it and slowly begin removing 5 turns at a time until you hit around 34
> Amps. With no cap in the circuit you always want to set this current 5-8
> amps lower than your operating Tesla oscillator circuit. It usually comes
> out to 85-90 turns for 40 Amps.
> 
> This process is the least time consuming and more accurate as doing it by
> calculation requires you know the specific data on your reactor core
> material, and also the data on your pole xmfr core material.
> 
> Dr. Resonance
> 
> 
> 
> 
> On Wed, Apr 21, 2010 at 8:13 AM, <jhowson4@xxxxxxxxxxx> wrote:
> 
> > Hello
> > I am attempting to figure out how to design the Inductor for the ballast I
> > am working on. does any one know of a program (free) that will allow to me
> > to input the core dimensions, wire gauge, insulation thickness, number of
> > turns etc. And tell me things like the inductance, resistance, will it fit
> > in the core window, ect.
> >
> > I have been looking for about an hour now to no avail.
> > I am trying to design the Ballast I am working on but cant really find the
> > much info about how to do it, any suggestions.
> >
> > I was planning on winding a coil and tapping it at various points, this
> > would allow me to have a wider variety of inductance choices and thus
> > current choices. such a plan will probably consists of multiple coils of
> > different gauge in series. It does not make sense to wind an entire coil
> > with 40amp wire when only 1/4 of it would only ever be carrying 40 amps.
> > Right?
> >
> > Thanks,
> > John "Jay" Howson IV
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> >
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
 		 	   		  _______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla