Re: What's a waveform monitor?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Crow Leader by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>

I've taken measurements on live coils several ways.

- I've measured ground current across a 0.1 ohm resistor and the scope leads
across the resistor. One side of the resistor went to earth ground and
ground on the scope, the "hot" side to the probe tip and the base of the
secondary coil. Voltage across this resistor is relative to the current
flowing through it.

- a short wire near the primary tank picks up whatever is happening in that
circuit.

- just the scope lead laying near the operating coil works as well. It does
not take much to be an antenna near a tesla coil.

I use the cheapy 10x probes that shipped with my HP scope, nothing special
or expensive to replace.

KEN

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, November 30, 2002 1:16 AM
Subject: Re: What's a waveform monitor?


 > Original poster: "harvey norris by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <harvich-at-yahoo-dot-com>
 >
 >
 > --- Tesla list <tesla-at-pupman-dot-com> wrote:
 >  > Original poster: "Crow Leader by way of Terry Fritz
 >  > <twftesla-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>
 >  >
 >  > you can see any tesla coil waveform just fine with a
 >  > normal scope.
 >  >
 >  > KEN
 > What KIND of sensor do you wish to use, and WHERE do
 > you put it then?
 > HDN
 >
 > __
 >
 >
 >