Original poster: Terry Fritz
<mailto:vardin@xxxxxxxxxxxxxxxxxxxxxxx><vardin@xxxxxxxxxxxxxxxxxxxxxxx>
Hi Ken,
At 12:12 PM 10/16/2005, you wrote:
...........
2. Terry: "I just tested mine like this:
<http://hot-streamer.com/temp/CurrentShunt-test.jpg>http://hot-streamer.com/temp/CurrentShunt-test.jpg":
Your shunt looks exactly like mine. There probably is some skin
effect but I'd not think that would be inductive, so it would
merely cause an apparent increase in the indicated current. That
the shape of the wave in my "5" image is essentially the same as
that in the 5A simulation image seems indicative to me that it is
reasonably acurate. (And in that 5A image, I rather wish I'd
thought to change the scale of one of the curves so that they did
not overlap.)
...
I checked my shunt at DC and it was dead on!! I suspect it has
nickel or some other high frequency "not" friendly metal in the
resistive part. I thought there might be micro cracks or something
since it is very "used"... The resistor does not attract a magnet at all...
Apparently, you got a "good one" :-)))
Cheers,
Terry