Re: "NEW" idea ?? on primary tapping...

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

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 

One way to look at it is to look at the current path.  For example, if the
current in the primary (up to the tap) is going one way and then a
transition to the C feeder ring and then the current goes back the other way
before it goes down to the power source, the C feeder ring would have the
effect of undoing the turns in the primary.

Gerry R.


 > Original poster: "Yurtle Turtle" <yurtle_t-at-yahoo-dot-com>
 >
 > I can tell you from experience that the routing of my
 > long wire tap affects tuning. Since I have enough wire
 > to go to the "worst" extreme of my primary, I usually
 > have a fair amount "left over". That wire has
 > inductance, and how it happens to "hang" affects
 > tuning. I'd expect the "BunnyKiller's" method to be
 > much more stable than "hanging wire".
 >
 > Adam
 >
 > --- Tesla list <tesla-at-pupman-dot-com> wrote:
 >
 >  > Original poster: "Rob Maas" <robm-at-nikhef.nl>
 >  >
 >  > But how do you tune such an arrangement: if you tune
 >  > first the primary (no connection with the feeder
 >  > ring
 >  > yet), and then make a tap to the feeder ring, it is
 >  > inevitable that part of the circumference of the
 >  > feeder
 >  > ring is either added or subtracted from the just
 >  > carefully-
 >  > tuned primary, thereby immediately ruining the
 >  > tuning.
 >  >
 >  > If, prior to tuning, there is already a connection
 >  > between
 >  > primary and feeder ring, changing (as a way of
 >  > tuning)
 >  > this connection point, basically does not change the
 >  > total
 >  > primary inductance at all, because what is added on
 >  > the
 >  > primary proper is subtracted from the feeder ring,
 >  > and vice
 >  > versa. Or am I missing something very fundamental
 >  > here?
 >  >
 >  > Rob
 >  >
 >  > >Original poster: "Yurtle Turtle"
 >  > <yurtle_t-at-yahoo-dot-com>
 >  > >The way I understand his proposal, you'd be able to
 >  > >tap it anywhere you want, just like with a long
 >  > wire,
 >  > >but without the hassle. He's proposing a ring be
 >  > >placed below the primary. A short jumper would go
 >  > from
 >  > >anywhere along the ring to any point on the
 >  > primary.
 >  > >Just invision a strike ring below the primary.
 >  > Since
 >  > >he's not proposing a closed circle, it shouldn't
 >  > sap
 >  > >away any more energy than a strike ring would.
 >  > >
 >  > >Adam
 >  >
 >  >