AC Voltmeter

Product Description

An AC voltmeter is an instrument used to measure the alternating voltage (AC voltage) between two points in an electrical circuit. It displays the voltage in volts (V) and is specially designed to measure alternating current voltages, which periodically change direction and magnitude (typically sinusoidal).

AC voltmeters function based on the electromagnetic or electronic principle. In analog types, they use moving iron or electrodynamometer mechanisms, while digital types convert the AC signal to a corresponding digital value using rectification and analog-to-digital conversion (ADC).

Key Features:

• Not Polarity Sensitive: Because AC constantly reverses direction.

• Calibrated for RMS Values: Typically displays RMS values of sinusoidal waveforms.

• Frequency Range: Usually accurate for power frequencies (50/60 Hz), with specialized versions for higher frequencies.

• High Input Impedance: To avoid drawing significant current from the circuit.