Voltage/Length (fwd)

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: Voltage/Length (fwd)
From: Tesla List <tesla-at-stic-dot-net>
Date: Tue, 20 Jan 1998 19:13:46 -0600
Approved: tesla-at-stic-dot-net

From: 	Bill Lemieux[SMTP:gomez-at-netherworld-dot-com]
Sent: 	Tuesday, January 20, 1998 10:50 AM
To: 	Tesla List
Subject: 	Re: Voltage/Length (fwd)

Setting aside discussion of spark length vs. atmospheric conditions of
humidity, pressure, etc, I have long been meaning to perform the
following experiment:

Measure the RMS current into and out of the secondary by placing a
measuring instrument in the ground path near the bottom of the
secondary.  I can think of several ways to do this, and you probably can
too.

Now then, the RMS voltage obtained across the secondary ought to be
approximated by V=ZI, and Z can be calculated.  I know that we are
probably more interested in peak voltage than RMS, but it's a start.

Ferinstance: put a small wattage light bulb in the ground of the
secondary.  (small enough that the few milliamps of current will be
enough to light it to some median level of luminance)  Point a piece of
optical fiber at the lamp, shield the whole from stray light, and pot
the lamp in RTV or some such if necessary.  Run the fiber to a PIN
diode, CdS cell, or some other way of measuring the light output.

Using a high=powered RF generator run various known currents through
your secondary and plot the outputs to obtain a response curve.

Fire up the coil and see what you get under actual operating conditions.

discussion?

-Gomez

-- 
.......................................................................
.                personal email: gomez-at-netherworld-dot-com                .
.          personal web page: http://www-dot-netherworld-dot-com/~gomez       .
.......................................................................