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Digital Multimeters

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  • 1. How to use a Multimeter ?

    The AstroAI Multimeter is designed to safely and accurately troubleshoot a variety of automotive and household electrical issues. To measure voltage with the multimeter, start by putting the black probe in the common terminal and the red probe in the terminal that's marked for measuring volts. Then, set the multimeter to the kind of voltage you're measuring if the multimeter lacks an auto-range function.

  • 2. How to test capacitor with digital multimeter ?

    To test a capacitor with an AstroAI Multimeter, set the meter to read in the high ohms range between 10k and 1m ohms. Then, touch the meter's leads to the corresponding leads on the capacitor with the red to positive and the black to negative. The meter should start at zero and then start slowly moving toward infinity.

  • 3. How to read a digital multimeter ?

    Let's start by measuring the voltage of a AA battery with an AstroAI multimeter. First, plug the red probe into the port labeled mAVΩ and the black probe into the COM port. Then, turn the selection knob to set your meter to "2V" in the DC range. Note that most portable electronics use DC and not AC. Connect the red probe to the '+' or positive terminal of the battery and the black probe to the '-', or negative terminal of the AA battery.

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