Re: DC Charge inductor.

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

On 23 May 2005, at 20:41, Tesla list wrote:

> Original poster: "Gerry Reynolds" <gerrytesla@xxxxxxx>
>
> Hi Dave,
>
> A little caution, I think, is in order.  The impedance of an inductor
> that limits 120Vac to 6.6 amps is not 18 ohms "resistance" but is 18
> ohms which is a combination of its resistance and reactance (most of
> it is probably reactance).  If you pass a DC current thru the inductor
> and measure the Vdc drop, I think you will find the resistance to be
> much less than 18 ohms.
>
> Gerry R.

Which off the top of my head makes the inductance about 48mH.

?
Malcolm

> Original poster: <mailto:Davetracer@xxxxxxx>Davetracer@xxxxxxx
>
> In a message dated 5/22/2005 10:48:41 P.M. Mountain Daylight Time,
> <mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx writes: Original poster:
> "Jim Mora" <<mailto:jmora@xxxxxxxxxxx>jmora@xxxxxxxxxxx>
>
> Hello all,
>
> I am going to build an 18 to 40 Henry choke (multi-taped) DC charge
> inductor <continued discussions>.
>
>
>       Jim, I more or less fumbled my way to an 18 Henry inductor by
>       winding
> about 20 pounds of #11 copper wire (with the heavy magnet-wire type of
> insulation) on a simple coil mold, then putting a removable core
> inside, made by hack sawing apart a transformer. Believe me, after all
> these years of "MicroHenry" and such, it got a little weird working in
> "Henries".
>
>       I used  E
>                 -----
>                  IR
>
>       to calculate R since I knew E and measured I. At 120VAC, 6.6
>       amps were
> struggling through the coil, which works out to 18 ohms "resistance".
>
>
>
>
>