Re: Perfecting my final design...

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx>

Hi Gerry,

Perhaps one of us misunderstands what the original proposal was.

My understanding was:
1. two identical spirals mounted above each other and connected at the
center.
Or
2. two counter wound spirals mounted above each other and connected at the
center.

I believe your correct the currents must flow in the same rotational
direction.
In case one the currents flows in opposite rotational directions in each
spiral, not good.
The center of one spiral would have to be connected to the outer of the next
for the current to continue in the same rotational direction

In case 2 because the spirals are wound in opposite directions current
leaving the last inner turn of one spiral can enter the inner turn of the
next spiral and flow in the same rotational direction.

Hopefully this explains, in an understandable way, what I believe the
original poster was asking.
An other way of thinking about it is that both spirals are wound in the same
direction but one spirals in the other spirals out.

Robert (R. A.) Jones
A1 Accounting, Inc., Fl
407 649 6400
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, June 14, 2005 10:39 PM
Subject: Re: Perfecting my final design...


> Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi Bob,
>
> That doesn't sound right.  All of the current filiments need to go the
same
> direction for the fluxes to add.  Im thinking the correct way to look at
it
> is to decompose the spiral into N current loops.  Each one contributes to
> the total flux thru the center.  It doesnt make any difference whether the
> current is working its way toward the center or toward the outside.  What
> matters is the direction it travels relative to the center.  Think right
> hand rule to determine the direction is traveling.
>
> Gerry R.
>
> >Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx>
> >
> >That had me going for a moment or two too.
> >
> >If the centers are connected together then its the correct thing to do.
> >
> >If you were to connect the centre to the outer of the next layer they
would
> >need to be wound in the same direction.
> >
> >
> >Robert (R. A.) Jones
> >A1 Accounting, Inc., Fl
> >407 649 6400
> >----- Original Message -----
> >From: "Tesla list" <tesla@xxxxxxxxxx>
> >To: <tesla@xxxxxxxxxx>
> >Sent: Tuesday, June 14, 2005 11:00 AM
> >Subject: Re: Perfecting my final design...
> >
> >
> > > Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
> > >
> > >
> > > Hi Adam,
> > >
> > > Having no experience with dual layer primaries,  I'm wondering if my
> > > interpretation of "opposite" directions is correct.  Seems like one >
layer
> > > would undue the other layers inductance.   I must be missing
something.
> > >
> > > Gerry R.
> > >
> > >
> > > > > Original poster: "Adam R." <arabraxas@xxxxxxxxxxx>
> > > > >
> > > > > before and have been wanting to give it a go: a simple dual layer
> > > >primary.
> > > > > It will be 1/4" OD Cu tubing ten turns, each wound in opposite
> > > >directions
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
>