Re: [TCML] Voltage Question

["Udo Lenz" <udo_lenz@xxxxxxxxxxxxxx>]

   Hi Paul,

Looks like a plausible solution.

I can't resist another nitpick since you're the expert on transmission
line secondaries :-) The top voltage doesn't exactly follow the I*w*L rule
for non neglectable capacitances along the coil. It is good for large top
capacitances. For a neglectable top capacitance, you would over
estimate the voltage by a factor of pi/2 (i.e. a quarter wave along the
secondary).

Another issue:
Why do you think the current measurement approach holds only
below breakout?

Udo

> Udo wrote:
> > The secondary voltage depends on the magnetic field
> > inside the secondary. One part of the field comes
> > from the secondary current. If that is the only
> > contribution to the field the equation you gave would
> > be correct. But also the field from the primary needs
> > to be added in
>
> Good point.  I guess the solution is to make the
> calibration using the peak of the secondary current
> envelope because at that point the primary current
> is going through its notch.
>
> --
> Paul Nicholson
> --
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