[AMPS] New member and Drake L7 questions

[Peter Chadwick]

A lot depends on what the meters are. If the shunt is internal and it's a
'standard' 100mV meter, then increasing the drop isn't very practical. A 5x
overload may not be a brilliant idea for the meter, but it's not normally
disastrous - or not as much as no protection. A Schottky rectifier across the
meter gets around the problem (or a pair of them in reverse parallel).
Incidentally, I'm assuming that 100mV is the standard drop for moving coil
meters in the US.

Do people still manufacture moving coil meters, by the way, or have electronic
meters taken over completely?

73

Peter G3RZP


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