Recently, I heard a real story that made me furious. A friend who is an electrician said he wanted to learn PLC (Programmable Logic Controller), but he was ridiculed by those around him: “With your level, you want to touch automation? You are overestimating yourself!” Honestly, hearing this made me both angry and amused. As … Read more
Transforming Electricians into Smart Home Installers? A Beginner’s Guide to Doubling Your Income! Do you remember that bone-chilling night last winter when I was squatting in front of a distribution box in an old residential area, my fingers numb from the cold, yet sweat soaking my back? By the time I fixed the last wiring … Read more
Transforming Electricians into Smart Home Experts: A Journey of Success To be honest, when I first heard the term “smart home,” I was completely bewildered. As an electrician with fifteen years of experience, my mind was filled with switches, sockets, and conduits, thinking that such high-tech gadgets were only for the wealthy. It wasn’t until … Read more
1.The multimeter is divided into analog and digital multimeters. As shown in the figure below, the left image is an analog multimeter, and the right image is a digital multimeter. 2.The function of the multimeter is to measure AC voltage, DC voltage, DC current, resistance, and other multifunctional measurements. 3.Pre-use checks for the multimeter. (1) … Read more
First, it is essential to develop good habits by carefully checking the multimeter for any abnormalities before use. This does not take much time but has a significant impact. For example, check for any damage to the meter, and whether the digits or needle are functioning correctly, especially when measuring high voltages. Always inspect the … 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