In the design and manufacturing process of electronic devices, if a design is encountered where the circuit board ground is directly connected to the chassis ground, will this design cause problems? This article will explore this issue, hoping to provide assistance to our readers. 1. Electrical Safety Issues The direct connection may lead to a … Read more
Considerations for Renovating Old Electrical Circuits It is necessary to replace all wiring with copper core; partial modifications are not recommended; Old aluminum wiring within walls is prone to oxidation and overheating, posing hidden dangers; Old air switches should be replaced with new models with leakage protection; Increase the number of sockets to avoid overloading … Read more
Source: Electrician Home Electrical Technicians Technical Club：200037175 Electrical Personnel Procurement Alliance Group:436576602 Application Format:City Name – Company Name (Electrical Engineer Job Title) Before starting the second part of voltage testing, let’s insert a small section A: How to choose the multimeter probe socket under different ranges First, let’s take a look at the sockets available … Read more
The original in-car entertainment systems often have limited functionality, are outdated, and lack modern connectivity. Replacing with an aftermarket head unit can solve these issues, and ordinary car owners can complete the installation themselves. Problem Analysis Before replacing the head unit, car owners usually worry about: Whether it will affect other vehicle functions If they … Read more
A multimeter is the preferred tool for electricians to troubleshoot faults. For many electricians, short circuit faults are easy to check with a multimeter, but finding breakpoints is not as straightforward. Today, I will share a method for using a multimeter to check for wire breakpoints. The steps are as follows:1. Connect one end of … Read more
Click the “blue text” above to follow us We all know that a multimeter is an essential maintenance tool for electrical workers. Proper use of a multimeter can not only make our work more efficient but also enhance our safety and effectiveness. 1. Before using the multimeter, perform a “mechanical zeroing”; 2. Do not touch … Read more
Search on WeChatTechnical TrainingA multimeter, also known as a multi-tester, is a versatile measuring instrument that can measure DC current, DC voltage, AC voltage, resistance, and audio levels. Some models can also measure AC current, capacitance, inductance, and certain parameters of semiconductors. It is a commonly used tool for electricians. 1. Check the range before … Read more
In the process of circuit board manufacturing, electronic clean rooms are not only a key link in ensuring product quality and production efficiency but also an important place for safeguarding employee health and safety. Due to the involvement of high-precision electronic equipment, chemical solvents, and strict cleanliness requirements, it is particularly important to formulate and … 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
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