Re: No responses yet! Fw: Air core toroid...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

Hi Bart, All! 
        I see nothing in Michael's question that would lead us to assume a 
priori that the toroid in question is to be used as a Tesla secondary. I have 
not yet done the math or the experiment, but at first flush it seems 
counterintuitive that a toroid, where the magnetic flux is completely 
contained within the core, would have identical inductance to an open 
solenoid, where the flux lines at the ends extend to infinity. 
        FWIW a large "paena-toroidal"  or "quasi-toroidal" secondary might 
make an interesting bipolar Tesla coil. (reduced EMI?) 

Matt D. 

In a message dated 6/9/01 12:57:01 PM Eastern Daylight Time, tesla-at-pupman-dot-com 
writes: 



>
> Original poster: "Barton B. Anderson by way of Terry Fritz < 
> twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net> 
>
> Hi Michael, 
>
> My image of what you proposed here must be wrong. I'm imagining a circular 
> coil where the low and 
> high voltage ends are shorting via arcing. You must have something else in 
> mind. Could elaborate 
> more? 
>
> Thanks, 
> Bart Anderson 
>
> Tesla list wrote: 
>
> > Original poster: "mpf by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
> <the_machin_shin-at-hotmail-dot-com> 
> > 
> > I haven't received any responses yet, and was hoping my question was not 
> > forgotten... 
> > 
> > ----- Original Message ----- 
> > From: mpf 
> > To: Tesla list 
> > Sent: Wednesday, May 30, 2001 3:58 PM 
> > Subject: Air core toroid... 
> > 
> > Curious how the inductance of an air core toroid coil (inductor) would 
> > compare with that of a straight coil... 
> > 
> > Thanks. 
> > 
> > Michael P. F. 
>
>