Summary of AC/DC Multimeter Article

An AC/DC multimeter is a versatile electrical measurement tool capable of measuring AC/DC voltage and current, resistance, continuity, frequency, and temperature. The V~ symbol indicates AC voltage measurement, while the V— symbol is for DC voltage. Proper selection of measurement mode is essential for accurate diagnostics.

To measure AC voltage correctly, users should set the dial to V~, connect test leads (black to COM, red to VΩ), and follow safe probing order. Functions such as HOLD, MIN/MAX, and REL help analyze voltage fluctuations and track electrical changes.

AC/DC multimeters are widely used in industrial maintenance, automotive diagnostics, renewable energy systems, electronics repair, and HVAC motor control. Maintaining voltage within ±10% is critical for preventing equipment damage.

Resistance measurement is another key capability, helping identify open circuits, poor connections, and faulty components in devices such as heaters, relays, and PCBs.

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