RE: TC Secondary Currents - was ( Experimental Help - Terry?)

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

Original poster: "John H. Couture by way of Terry Fritz <twftesla-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>


To explain the problem further, I regard the ohmic currents as
(a+j0)(streamers)and the reactive currents as (0+jb)(cap charging). When I
am getting streamers the current is (a+jb). Or is it (a+jo) and (0+jb) at
different times of the cycle? With utility currents I can separate the two
currents easily to find the power factor or I can find the power factor to
separate the two currents. With Tesla coils I have not been able to do this
because I have not determined how to measure the high secondary voltage with
the true phase relations with the (a+j0) or (0+jb) currents.

As I recall Terry was able to create scope curves showing both the current
and voltage, but the phase difference could not be used to find the separate
currents. I may be wrong in this assumption. It was also my understanding
that the displacement current could not be determined.

John Couture

-------------------------------


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Friday, March 01, 2002 9:01 PM
To: tesla-at-pupman-dot-com
Subject: Re: TC Secondary Currents - was ( Experimental Help - Terry?)


Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>

Tesla list wrote:
>
> Original poster: "John H. Couture by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>

> I have done this test many times and often wondered just exactly what kind
> of current I was measuring. Was the current a reactive current charging
the
> toroid and self capacitance of the coil or was it an ohmic current that
was
> producing corona and the streamers? And how about the Maxwell displacement
> currents?

Without breakout, you measure the current that is charging the
capacitances. With streamers, there is some increase because the
streamers increase the effective capacitance. With sparks to ground,
some extra increasing because the sparks discharge the capacitances.
The displacement current is the return of the current that charges
the capacitances. It is interrupted at the limits of conductive
materials in the system, but continues in the ground and nearby
conductive objects due to the influence of the electric field.

Antonio Carlos M. de Queiroz