AC/DC testing meter, multimeter or digital multimeter (DMM), is a versatile electronic measuring instrument used to measure various electrical parameters in both alternating current (AC) and direct current (DC) circuits. It is an essential tool for electricians, electronics technicians, hobbyists, and anyone working with electrical

  1. Voltage Measurement: AC/DC testing meters can measure both AC voltage and DC voltage. They can be used to measure the voltage of power sources, batteries, electronic components, and various electrical systems.
  2. Current Measurement: These meters can measure both AC current and DC current. Current measurement is vital for troubleshooting electrical circuits and determining the current flowing through different components.

AC & DC Testing Meter are widely used in electrical and electronic work for troubleshooting, maintenance, and testing applications. They provide accurate and reliable measurements of various electrical parameters, helping users diagnose electrical issues, verify component values, and ensure the proper functioning of electrical systems.

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  • Resistance Measurement: AC/DC testing meters can measure the resistance of resistors and other components. Resistance measurements are useful for identifying faulty or damaged components and checking for continuity in circuits.
  • Continuity Testing: The meters have a continuity testing feature that produces an audible beep or display a symbol when there is a low resistance (close to zero ohms) between two points, indicating continuity.
  • Diode Testing: AC/DC testing meters can test diodes to determine if they are functioning properly.
  • Capacitance Measurement: Some advanced AC/DC testing meters can measure capacitance, which is useful for testing capacitors and analyzing their performance.
  • Transistor Testing: Certain AC/DC testing meters have the ability to test transistors and identify their pin configurations.
  • Auto-ranging and Manual Range Selection: Many AC/DC testing meters have auto-ranging capabilities, which means they automatically select the appropriate measurement range based on the value being measured. Some meters also allow manual range selection for greater control.
  • LCD Display: The meter typically has a digital LCD display that shows the measured values and other information.
  • Safety Features: AC/DC testing meters often come with built-in safety features like overload protection, fuse protection, and non-contact voltage detection for added safety during measurements.