Next message: Wesley & Patty Eldred: "Re: TWL: GPS Sensor"
In a message dated 12/9/03 12:04:22 AM,
writes:
<< Anyone ever converted an internal shunt ammeter to use an external shunt?
Right now, my ammeter outputs go the the ammeters at the lower station, then
to the ammeters at the upper station, then finally back to the battery. I'd
like to change this - hopefully without buying four new meters! >>
On most ammeters, the shunt is simply a heavy gauge wire connected across the
poles of a conventional voltmeter. The meter measures the voltage drop across
the shunt. The scale reads out in amperes passing through the shunt. On older
meters, the shunt is usually external and consists of of metal strip. If this
is the case, you can easily remove it and place it in a more appropriate spot
in the circuit, using much smaller wires to connect the meter across the
shunt. Working carefully, you can also do this for non sealed meters where the
shunt is internal. If, however, the meter is sealed, drastic surgery might be
required to get at the meter's innards and it might be better to get new ammeters
with an external shunt.
Larry Z
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