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Uwe Langmesser wrote: Is there a simple relationship between a meters internal resistance and its sensitivity (ohms per volt). ============================ Yes. Couldn't be more simple. It is the internal resistance of the meter divided by the voltage range the meter is set to. When the meter is at full-scale deflection the current flowing through the meter is always (Voltage Range) / (Ohms per Volt). The internal resistance of the meter, on any voltage range, is the resistance of the moving coil plus the series meter-multiplying resistance. --- Reg, G4FGQ |
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