RE: [TCML] Inductor Construction

["Dave Halliday" <dh@xxxxxxxxxxxxxx>]

Bill Beaty has done this:

http://amasci.com/exhibits/hiamp.html

He notes:

...cable heated up quickly though. 
Conductive cooling doesn't work well through all that PVC insulation...

Some fun reading

Dave

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx 
> [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of David Speck
> Sent: Sunday, May 31, 2009 7:17 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Inductor Construction
> 
> Tyler,
> 
> What you are proposing is to create a multifilar winding.  Bifilar 
> windings (two wires in parallel) are relatively common.  I've seen 
> magnet wire offered with 4 conductors bonded together.  No reason you 
> couldn't do 6.
> 
> If you arbitrarily number your wires 1 through 6, just apply power to 
> the start of winding 1 (W1), connect the end of W1 to the 
> start of W2, 
> the end of W2 to the start of W3, and so on.  Power comes out 
> of the end 
> of W6.
> 
> Only downside is if there is a thick insulation jacket around the 
> overall cable.  It will take up space and trap heat.  Also, 
> generally, 
> jacketed cables are more expensive per net foot of conductor than a 
> single conductor.  Still, if you can get the stuff cheaper 
> than a roll 
> of 8 Ga THHN at Home Depot, go for it!
> 
> Dave
> 
> Tyler Pauly wrote:
> > I apologize for my rustiness with classical physics, but 
> here's the problem:
> >
> > I'm building an inductive ballast for a pole pig; the plan 
> is for 200-300 turns of 8 gauge around a PVC pipe, with some 
> welding rods taped together into a long bar sliding in and 
> out of the PVC form.
> >
> > My question arises because I found a supplier of some cable 
> that has 6 strands of 8 gauge insulated copper wire inside.  
> Would I be able to somehow splice the input to connect to all 
> 6, then use say 50' of the cable to get 300 turns effective?  
> >
> > Is this feasible or not?
> >
> > Thanks,
> > Tyler
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