A digital multimeter (DMM) is a versatile electronic measuring instrument that combines several measurement functions in one unit. It is widely used in electronics, electrical work, home troubleshooting, and automotive diagnostics.
Main Uses of a Digital Multimeter
1. Measuring Voltage (AC/DC)
• AC Voltage: For checking power outlets, appliances, etc.
• DC Voltage: For testing batteries, power supplies, etc.
2. Measuring Current (Amps)
• Used to check how much electrical current is flowing in a circuit.
• Important for diagnosing overloaded circuits or faulty components.
3. Measuring Resistance (Ohms)
• Used to test resistors, wires, fuses, and connections.
• Helps detect broken circuits or short circuits.
4. Continuity Testing
• Checks if a circuit is complete (useful for wiring).