Assistance on AC current measurement

---------

From: C M Tyler (k5gq@juno.com)
Date: Sat Sep 27 1997 - 00:31:07 EDT


I apologize, for asking but I need some help.

The test consists of applying an AC 60Hz voltage to a transformer and
measuring the current. The current wave form through a 1 ohm resistor
with the transformer is not a sine wave. The waveform does not contain
any oscillation. The multi meter is reads true RMS up to a 5:1; RMS to
average. I drew the waveform on graph paper. Next used calculus to
determine the RMS value. (Only six sample points; where the line crossed
the gradient.) The value calculated was within 3% with the value
measured.

Have I missed anything?

=================================

After seeing the posting from the Bubba contest results. I apologize for
not sending my few contacts in!!

I am ready for the Fox.

Only if I hear and work him.

Mark Tyler
K5GQ/m Houston TX
QRP-L 794 ARRL VE since 85

I operate mobile hf cw on the way to and from work. 20M & 30M


Search QRP-L Archives

[ QRP-L Archive | ]
[ 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 ]

---------

This archive was generated by hypermail 2b29 on Fri Jun 02 2000 - 11:34:27 EDT

kd4ab@kd4ab.org