Use of digital multimeter

Experiment 11 Use of digital multimeter

【Purpose requirement】

1. Understand the characteristics and basic performance indicators of digital multimeters;

2. Learn to use a digital multimeter to measure DC voltage, DC current and resistance, and check for circuit failures;

3. Learn to use electrical instruments-resistance box, fixed value resistance, DC power supply, etc .;

4. Learn to connect circuits and master the operation procedures of electrical experiments.

【Experimental Principle】

When connecting a circuit for an electrical experiment, the required components are a DC power supply, an electric meter, a resistor, and a switch.

【Experiment content】

1. Learn to use a digital multimeter to measure DC voltage;

2. Learn to use a digital multimeter to measure resistance;

3. Learn to use a digital multimeter to measure DC current;

4. Learn to use digital multimeter to check circuit failure.

【Instruments】

Serial number

equipment name

Model / Specification

Unit price (yuan)

Remarks

1

4-digit digital multimeter

DY2106

290

Compatible with other experiments

2

DC power supply

DH-VC1

900

3

Circuit design experimental device

DH-SJ1

2200

Contains 1.5V battery, measured resistance, resistance box, experiment connection line