[Boatanchors] Milliammeter shunt resistance wire sources?

J. Forster jfor at quik.com
Fri May 28 12:30:13 EDT 2010


A definite maybe. If the toaster has been used, the surface of the wire is
likely badly oxidized and all but impossible to solder.

An old time hardware store (Not Home Depot) might still have either the
replacement coils for the open face hotplates or the conical screw-in
space heater replacements that screw in like light bulbs, somewhere on a
back shelf.

If you do find some NiChrome wire, you'll need acid core solder to tin it.

I's suggest looking ar Digi-Key or Mouser for low Ohm, wirewound
resistors. 1 Ohm are certainly made. I'd look for about 0.05 Ohm, maybe by
paralleling several.

FWIW,

-John

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


> Hi:
>
> Is an electric toaster a good source of shunt wire for a meter scale
> changing project?  Is the wire solderable?
> I'm going from 0 - 1 ma to 0 - 1 A in scale.
> Tnx
> Greg
> WA7LYO
> Kinston NC




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