MR said:
Hi, MR. I believe it refers to the variation in instantaneous current
from highest to lowest value.
Let's say you've got a 60 watt bulb powered by 120VAC. The current
could be measured with a meter as 0.5A AC. But during the course of
the line cycle, the peak current going in both directions would be
about 0.7A. That would mean the "current swing" would be from +0.7A to
-0.7A, or 1.4 Amps. If you had a current transformer and an
oscilloscope, you would see that the difference between the highest
part of the trace and the lowest was 1.4A.
If this doesn't sound right, could you give some context -- i.e. where
you found that phrase, and what they were talking about?
Cheers
Chris
