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

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