Every voltmeter has an impedance which is the meters

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Unformatted text preview: ng measured. Every voltmeter has an impedance, which is the meter's internal resistance. The impedance of a conventional analog voltmeter is expressed in "ohms per volt." The amount of resistance an analog voltmeter represents to the circuit changes in relation to the scale on which it is placed. Digital voltmeters, on the other hand, have a fixed impedance which does not change from scale to scale and is usually 10 M ohms or more. Page 2 © Toyota Motor Sales, U.S.A., Inc. All Rights Reserved. ANALOG AND DIGITAL METERS There is not a great difference between analog and digital ammeters. Digital meters are often capable of measuring smaller currents, all the way down to microamps. They are easier to use because they give a specific value, eliminating the need to interpret the analog meter's needle on its scale. Generally speaking, most digital ammeters are combined with a voltmeter. AMMETERS— ANALOG AND DIGITAL A mmeters measure amperage, or current flow, in a circuit, and provide information on current draw as well a...
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