Re: neon current
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Sunday, August 03, 1997 4:17 PM
Subject: Re: neon current
You have run into the vagaries of abominable primary
current waveforms. This is definitely the domain of a meter that
can convert arbitrary waveforms to RMS. An alternative is to use an
_isolated_ oscilloscope, a low value (say 1 Ohm) sensing resistor of
an appropriate rating and a high voltage probe.
> With the neons connected to the Tesla Coil and a .0264 uf capacitor in the
> LC circuit the amp meter reads 27. With a power factor connection capacitor
> connected to the primary the current drops to 22 amps. 1560 watts. I am
> getting 54" white hot sparks from the toroid.
> The increased primary circuit capacitance made the output sparks get longer
> thicker hotter and very much louder. I tried 2 different amp meters and
> still get false readings even with the power factor correction capacitors. I
> can not be pulling 22 amps of a 15 amp breaker for 3 minutes. It is not
> possible. I tested the breaker and it will trip at 16 amps after a few
> seconds. I even tried a watthour meter.
> Is there a way to get a true amp reading from the primary while the TC's is
> in operation?
> Gary Weaver