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Re: Fw: Arc Impedance Study - Computer Models



Hi Malcolm,
    Fr and k limit the speed agreed.  The surge impedance limits the
amount of the delivery.  The higher Xp is the lower the primary losses
agreed.  As the surge impedance goes up the current peak goes down,
the energy lost in the spark gap goes down,  and the peak energy in
the primary circuit decreases.  The peak energy in the tank scales as
the square of the peak current.  The peak spark gap energy loss scales
as an inverse 0.67 power of the peak current.  The net energy in the
tank deliverable to the secondary, with loss to the spark gap,
increases as the surge impedance decreases with the frequency kept
constant.

    To transfer maximum energy to the streamer in minimul time the
tank surge impedance should be equal to the impedance of the streamer
reflected into the primary tank, should it not?
Since the streamer impedance changes with time should not the primary
tank capacitor also change with time?  How would one do such a thing?

Barry

-----Original Message-----
From: Tesla List +ADw-tesla+AEA-pupman-dot-com+AD4-
To: tesla+AEA-pupman-dot-com +ADw-tesla+AEA-pupman-dot-com+AD4-
Date: Monday, October 12, 1998 1:05 AM
Subject: Re: Fw: Arc Impedance Study - Computer Models


+AD4-Original Poster: +ACI-Malcolm Watts+ACI-
+ADw-MALCOLM+AEA-directorate.wnp.ac.nz+AD4-
+AD4-
+AD4-Hi Barry,
+AD4-          The speed of energy delivery to the secondary is a function
+AD4-of Fr and k, not the surge impedance of the primary as such. The
+AD4-higher Xp is the lower the primary losses but as Xp climbs, Vp has to
+AD4-as well. As usual, there is a nasty tradeoff occurring.
+AD4-
+AD4-Malcolm
+AD4-
+snip