Re: Need info on Igranic midget 3:1 transformer
If Ed's right, you'll only have to look at some 48swg wire and it will break!
The problem with measuring very thin wire (especially older stuff) is that
1. the insulation thickness is a substantial fraction of the actual copper diameter, and
2. the insulation thickness is not known to any reasonable tolerance.
If you can extract a meter or so of the wire and carefully measure its resistance, you can determine the diameter from first principles.
(e.g. swg and resistance per meter):
44 3.32
45 4.34
46 5.9
47 8.5
48 13.2
49 23.6
50 34.0
You can see that the change in R is a better measure of fine wire gauge than a mechanical method.
John
|