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What is a AC Potentiometer?

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Electrical Engineer
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What is a AC Potentiometer ?



AC Potentiometer Definition


An AC potentiometer measures unknown voltage by balancing it with a known voltage, including both magnitude and phase.


 

Types of AC Potentiometers


  • Polar type

  • Coordinate type


 

Polar Type Potentiometer


Measures magnitude and phase angle using separate scales and components like a phase-shifting transformer.


 

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Coordinate Type Potentiometer


Measures in-phase and quadrature components of the unknown voltage using two potentiometers in one circuit.


 

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Applications


  • Measurement of self-inductance

  • Calibration of voltmeter

  • Calibration of Ammeter

  • Calibration of watt meter


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