★ Digital multimeters are widely used in people’s daily life and study due to their simplicity, digital display, ease of operation, and strong anti-interference capabilities. This article briefly describes the common faults encountered during the use of digital multimeters and provides some daily handling methods. 1. Several Common Fault Analysis Methods for Digital Multimeters 1.1 … Read more
The use of a multimeter can be divided into the following types: First, turn the knob to the AC voltage measurement position, perform mechanical zeroing, and when the value is zero, use the two probes to contact the live wire and the neutral wire of the circuit to be tested. Second, turn the knob to … Read more
The multimeter distinguishes between live and neutral wires. Pointer Multimeter Distinguishes Live and Neutral Wires (1) Contact Measurement Method Set the multimeter switch to AC 250V or 500V. Connect the first probe to one end of the power supply and the second probe to ground (for example, on a water pipe, radiator, or damp ground). … Read more
Long press the QR code above to recognize, follow, and click “Skill Improvement” to obtain professional knowledge and free materials. Share this article to your friend circle and send a screenshot to the public account to participate in the lottery. The prize is a book at the end of the article. Before introducing the multimeter … Read more
Four Techniques to Use a Digital Multimeter Effectively 1. Determine if a Circuit or Device is Live The AC voltage range of a digital multimeter is very sensitive, capable of displaying even small induced voltages. Based on this characteristic, it can be used as a test pen. The method is as follows: set the multimeter … Read more
Click “Mechanical Industry Press E Vision” for quick follow-up A multimeter is a magnetic-electric instrument equipped with a rectifier that can measure various electrical parameters such as AC and DC current, voltage, and resistance. Some models can also measure key parameters of transistors and capacitance. Mastering the use of a multimeter is one of the … Read more
1. Identifying the Start and End of Motor Windings Using a Multimeter When the six terminals of a three-phase asynchronous motor are lost, unclear, or rewound, it is necessary to determine which two terminals belong to the same phase, which is the start of the coil, and which is the end. Below are several methods … Read more
How to use a multimeter to check if the water pump motor coil is burned out? To determine the quality of the motor, three conditions must be measured: the absence of open circuits and short circuits between the coil windings, and the insulation resistance. First, check whether the motor is a three-phase motor or a … Read more
New friends click on the blue text “Mechanical Industry Press E Vision” to follow 1. Identifying the Start and End of Motor Windings with a Multimeter When the six output terminals of a three-phase asynchronous motor are lost or unclear, or when the windings are rewound, it is necessary to determine which two output terminals … Read more
Search on WeChat Technical Training 1. Correct Usage of Multimeter To use a multimeter correctly, familiarize yourself with the dial. Adjust the two zero position knobs gently. Choose the correct terminals, and insert the red and black probes into the appropriate holes. Rotate the switch to the correct gear, and ensure the range is selected … Read more