1. Fault Characteristics and Repair of Damaged Capacitors on Engineering Circuit Boards The faults caused by capacitor damage are the most common in electronic devices, especially the failure of electrolytic capacitors. The manifestations of capacitor damage include: 1. Reduced capacitance; 2. Complete loss of capacitance; 3. Leakage; 4. Short circuit. The role of capacitors in … Read more
1. Repair Procedure for Burnt IGBT or Fuse on the Circuit Board If the current fuse or IGBT is burnt, do not replace the component immediately. You must confirm that the following other components are in normal condition before replacement; otherwise, the IGBT and fuse may burn out again. 1. Visually check if the current … Read more
1. Fault Characteristics and Repair of Capacitor Damage in Industrial Control Circuit Boards Capacitor damage is the most common fault in electronic devices, particularly with electrolytic capacitors. The symptoms of capacitor damage include: 1. Decreased capacitance; 2. Complete loss of capacitance; 3. Leakage; 4. Short circuit. The role of capacitors in circuits varies, leading to … Read more
A multimeter is an essential measuring instrument in electrical and electronic departments. As temperatures gradually drop and rainy, humid weather increases, the number of reports regarding electrical leakage faults has also risen. I believe many friends have been thinking hard about finding the cause of electrical leakage. In fact, we can easily find the cause … Read more
A multimeter, also known as a volt/ohm meter or multitester, is a versatile measuring instrument capable of measuring various electrical properties 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. … Read more
How to use a multimeter? This is a small problem for many new electricians or home users; having a multimeter but not knowing how to use it. Today, we will talk about the functions of the multimeter. The multimeter is an essential measuring instrument for electricians, primarily used for measuring voltage, current, and resistance. Multimeters … Read more
When checking for short circuits, open circuits, or leakage in a circuit, we usually use a digital multimeter or an analog multimeter for testing in actual repairs. However, the principles of digital and analog multimeters are different, so there are slight differences in checking with an analog multimeter and a digital multimeter. Below, we will … Read more
[Tip] Click on the blue text below the titleElectrical Workers Home Follow For business cooperation, please contact QQ: 3350579506 For more exciting consultations, please follow Electrical Workers 365 (diangong365) Electrical Workers Home QQ Group: Group 1: 468193845 Group 2: 522898769 Electrical Workers Home 1. Selection of Analog and Digital Multimeters: 1, Mechanical analog multimeters have … Read more
1. Appearance of the Multimeter. A multimeter is an instrument used to measure parameters such as voltage, current, and resistance. There are two types: analog and digital, and its appearance is shown in Figure 1. Figure 1 Multimeter 2. Preparation Before Using the Multimeter. (1) Place it Horizontally. Place the multimeter horizontally. (2) Check the … Read more
This is a supplement to previous content. Earlier, we published an article on measuring breakpoints, and many friends mentioned the use of multimeters. Indeed, we have published relatively little content on the use of multimeters, but they are quite versatile in practical projects. So let’s explore this topic together. 1. What is a Multimeter Also … Read more