[Boatanchors] Milliammeter shunt resistance wire sources?

[J. Forster]

Commercial or home brew?

-John

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


>
> I have flux available that works well on stainless steel typically wets
> battery tops in an instant for those who do not have tabbed batteries
> and need to make a replacement pack.
> Also works well on the watch batteries used in many radios for the back
> up memory.  Not using the flux and you end up destroying the battery
> before it gets wetted with solder.
>
> I have not tried it on nichrome but I suspect it would work.
> ---
> Ron
>
>
>
> On Fri, 2010-05-28 at 09:30 -0700, J. Forster wrote:
>> 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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>
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