Re: Magnifier Report

To: tesla-at-pupman-dot-com
Subject: Re: Magnifier Report
From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Thu, 08 Oct 1998 20:58:09 -0600
Approved: terryf-at-verinet-dot-com

HI John,
         Thanks for this report. Some questions:

> Original Poster: FutureT-at-aol-dot-com 
> 
> All,
> 
> In new work, Lou Balint reports that he obtained a stronger longer 
> spark output from his magnifier when he tuned the secondary to 1/2 
> wavelength and the extra coil to 1/4 wavelength for a total 3/4
> wavelength for the secondary and extra coil combined.  This is 
> compared to the usual tune point which tunes to the combined
> secondary-extra coil resonant frequency.  The new tune point gave
> about a 10% longer spark.

Is driver secondary tune able to be obtained prior to connecting it 
to the output resonator? Is correct secondary tune maintained after 
hooking the resonator to the secondary? 

> He is driving the magnifier at low power using a robust signal generator,
> and he obtains about a 1" output spark.  A neon bulb array is used to
> monitor the tuning and any nodes along the coils.  Best results are
> obtained when a low voltage/low impedance node is positioned at the
> base of the extra coil.  

Is the sig gen coupled through a primary or hooked to the base of the 
secondary?

> Lou has also tried placing a variable tuning capacitor across 
> approximately the bottom half of the secondary to assist in 
correctly
> positioning the low voltage node at the base of the extra coil.  This
> tends to help the coil's performance also.

How would one do this in real life with several hundred kV across the 
secondary? Finally, can he relate these results ot results obtained 
in disruptive operation?

Thanks in advance,
Malcolm