1. Regulations for Wiring Single-Phase Power Outlets There are various types of single-phase outlets, commonly divided into two-hole and three-hole types. Two holes are arranged side by side, while three holes form a “T” shape. Next to the wiring holes are marked letters: L for live, N for neutral, and E in the center of … Read more
Click on the above ” Jicheng Training ” and select “Pin to Top Public Account“ 170,000+ followers on the industrial control WeChat platform: technical sharing, learning exchange, industrial control videos This article introduces several commonly used instruments by electricians and their usage methods and precautions, mainly including multimeters, ohmmeters, voltmeters, ammeters, and resistance measuring instruments. … Read more
New Disassembly Activity Starting in August, with prizes including drones, handheld oscilloscopes、computers、vacuum robots、smartwatches、solid-state drives、portable speakers. Come join us for lots of rewards! Hardware Inspection Before Powering On After a circuit board is soldered, when checking if the circuit board can operate normally, it is usually not powered directly. Instead, the following steps should be followed … Read more
I exerted a tremendous effort to finally blow off the STM32H753 with over 200 pins from the PCB using a hot air gun. I breathed a sigh of relief, silently hoping for a miracle. We need to design a new project, and after extensive analysis and consideration, we finally chose the STM32H753 chip. Due to … Read more
Search on WeChatTechnical Training1. Voltage Checking Method The voltage checking method uses a voltmeter or multimeter on the AC voltage setting to measure live circuits, which is an effective method for locating fault points. The voltage checking method includes voltage step measurement and voltage segment measurement. (1) Voltage Step Measurement During measurement, first set the … Read more
Introduction: In this issue, we will provide a detailed introduction to the usage methods and precautions of commonly used instruments, to help everyone grasp the relevant knowledge more quickly.1. Usage of Multimeter The multimeter can measure direct current, direct voltage, alternating voltage, and resistance, and some can also measure power, inductance, and capacitance, making it … Read more
1. Choose the appropriate megger: If the rated operating voltage of the motor being tested is 380 volts, we can choose a 500V megger. 2. Place the megger flat, perform a short circuit test by connecting the two probes together; if the pointer approaches 0, it indicates good condition. 3. Next, separate the two probes, … Read more
1. Targeted Measurement Guidelines 1. Correct Use of the Multimeter Correctly use the multimeter; familiarize yourself with the dial before use. Adjust the two zero position regulators gently. Properly select the terminals; insert the red and black probes into the correct holes. Rotate the switch to the correct range; make sure the range is selected … Read more
01. Correct Use of the Multimeter To use the multimeter correctly, familiarize yourself with the dial. Adjust the two zero position regulators gently. Choose the correct binding posts, and insert the red and black probes into the correct holes. Turn the switch to the correct position; ensure the range is set appropriately for accurate readings. … Read more
A multimeter, also known as a multi-tester, is a versatile measuring instrument that can measure various electrical parameters such as direct current, direct voltage, alternating voltage, resistance, and audio levels. Some models can also measure alternating current, capacitance, inductance, and certain semiconductor parameters.It is a commonly used tool for electricians. 1. Always check the range … Read more