Magnifier Report

• To: tesla-at-pupman-dot-com
• Subject: Magnifier Report
• From: FutureT-at-aol-dot-com (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Thu, 08 Oct 1998 16:40:38 -0600
• Approved: terryf-at-verinet-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.

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.  

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.

John Freau

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