Five ways to use a digital multimeter-Common Problem-php.cn

Five ways to use a digital multimeter

Mar 28, 2024 pm 08:39 PM

Answer: A digital multimeter can be used to measure voltage, current, resistance, test diodes and capacitance. Instructions for use: Measure voltage: Place the multimeter in the voltage range, connect the test leads to read the voltage value. Measuring current: Connect a multimeter in series with the circuit and read the current value. Measuring resistance: Place the multimeter in the resistance setting and connect the test leads to read the resistance value. Test the diode: Connect the test leads, the positive voltage value will be displayed when forward biased, and the infinity symbol will be displayed when reverse biased. Test capacitance: Connect the test leads and read the capacitance value on the display.

Five ways to use a digital multimeter

Five ways to use a digital multimeter

1. Measure voltage

Put the multimeter to the voltage range.
Connect the red test lead to the positive terminal of the voltage source and the black test lead to the negative terminal.
Read the voltage value on the display.

2. Measure the current

Place the multimeter in the current setting.
Connect the multimeter in series with the circuit.
Read the current value on the display.

3. Measure the resistance

Put the multimeter to the resistance position.
Connect the red test lead and black test lead to both ends of the resistor.
Read the resistance value on the display.

4. Test the diode

Put the multimeter to the diode setting.
Connect the red test lead to the anode of the diode and the black test lead to the cathode.
Observe the reading on the display:
- Forward bias: The display shows a positive voltage value (0.5-0.9V).
- Reverse bias: The display shows the infinity symbol (INF).

5. Test the capacitance

Put the multimeter to the capacitance setting.
Connect the red test lead and black test lead to both ends of the capacitor.
Read the capacitance value on the display.

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