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Before shipping moving-coil meters, manufacturers may short-circuit the meters' terminals with a length of wire, which provides effective electromagnetic damping and results in better immunity to external mechanical vibration and shocks that can occur during transportation. This Design Idea applies essentially the same principle to analog meters under normal operating conditions. Connecting a meter to a voltage source with low internal resistance applies electromagnetic damping and makes the meter's readings more stable. To obtain the 10V full-scale voltage range, add a series resistance, RS. A better approach is illustrated in which a moving-coil meter connects to the output of an operational amplifier, IC1, embedded in a deep negative-voltage-feedback loop. Although this Design Idea has so far related only to dc-voltage measurements, the circuit can be expanded to include ac- and dc-voltage measurements.