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  • Measuring instruments designed to measure the difference of electric potential (either of direct, DC, and/or alternating current, AC) between two points of an electric or electronic circuit, usually expressed in volts. These instruments typically consist of electromechanical (analog) or more frequently electronic (usually digital) instruments with appropriate leads. Practical instruments can perform the most common voltage measurements performed by technicians on electric and electronic equipment, circuits, and components. Voltmeters are mainly used in healthcare facilities in inspection, preventive maintenance, repair, and calibration of medical devices and other hospital equipment. Dedicated instruments used to measure high voltages in the order of kilovolts are also available.
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