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Re: [TCML] Measuring Amperage in Neon Discharges.
the neon bulb has a negative resistance curve - non destruction relies on
the series impedance of the transformer, or on a series resistance. you
will probably measure the same current through either bulb
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From: "Harvey Norris" <harvich@xxxxxxxxx>
Sent: Sunday, December 13, 2009 12:26 PM
To: <tesla@xxxxxxxxxx>
Subject: [TCML] Measuring Amperage in Neon Discharges.
Question; Can I simply put a common multimeter in series with a neon tube
illuminated by a 30 ma current limited NST secondary, to record that
secondaries amperage output? Do I need a special digital meter to do this?
Given a variac input to the NST primary, I notice that shorter bulbs fire
at comparatively low input primary voltages. If for example a voltage is
selected that will ignite both a 4 inch and a 12 inch bulb, shouldn't it
be possible to note the differing amounts of secondary load down for each
case by comparing the load current to the short current? Wouldn't it be
generally true that the same current should go through both the 4 and 12
inch bulbs tested separately, and that only the voltage across the bulbs
should be different, for the same amount of primary voltage input?
If this were true then, does this imply that the differences between the
cases could only be measured by the primary amperage input?
Finally, mustn't it be true that since the neon discharge has both a
voltage across it and and amperage consumption, by Ohms law it must have
an acting resistance in the thousands of ohms? I realize that the neon
discharge may have a non-linear resistance according the the voltage
imparted across it, and that 12 inch bulbs only have 500-600 volts across
them during ionization; but where does the idea of a negative resistance
occur, if these parameters show the the neon discharge resistance must be
in thousands of ohms?
Confused in Ohio
HDN
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