1. Observation Method When we receive a circuit board for repair, the first step is to carefully observe its appearance. If the circuit board has been burned, it is crucial to check whether the power circuit is functioning correctly before powering it up, ensuring that no further damage will occur. The observation method is a … Read more
When it comes to circuit boards, many people should be familiar with them, as they are ubiquitous in our lives, from small devices like Bluetooth headsets, electronic watches, and calculators to larger systems like computers, communication devices, and military/aerospace systems. Wherever integrated circuits are needed, they rely on PCB to carry electronic components. Before PCB … Read more
1 Tools for Manual Soldering Any electronic product, from a rectifier composed of several parts to a computer system made up of thousands of components, is constructed from basic electronic components and functions, connected using certain manufacturing methods according to circuit principles.Although there are various connection methods (such as winding, crimping, gluing, etc.), the most … Read more
In the process of circuit design, application engineers often overlook PCB layout. The common issues encountered are that the circuit schematic is correct, but it does not function properly or only operates at low performance… Have you faced this too? Today, I share an article by TI application engineer Timothy Claycomb on how to properly … Read more
PCB Manufacturing Process The manufacturing of PCBs is very complex. Taking a four-layer printed circuit board as an example, the main steps include PCB layout, core board manufacturing, inner layer PCB layout transfer, core board drilling and inspection, lamination, drilling, copper plating of the hole walls, outer layer PCB layout transfer, and outer layer PCB … Read more
PCB grounding is a concern for PCB layout engineers, such as how to effectively plan a grounding system on the board, whether to wire analog, digital, and power grounds separately or together at a single point, and how to eliminate ground loops on the circuit board. Today, we will mainly discuss PCB grounding design, PCB … Read more
DIYer: Smiling Duck Production Time: Half a Day Difficulty Level: ★★☆☆☆ GEEK Index: ★★★☆☆ Are you still using a universal board for repairs? Are you struggling to create the circuit and layout you want with a universal board? For many electronic enthusiasts today, a universal board can no longer meet the production needs, but having … Read more
The names of circuit boards include: circuit board, PCB, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin printed circuit board, and printed (copper etching technology) circuit board, etc. Circuit boards miniaturize and visualize circuits, playing an important role in the mass production of fixed circuits and optimizing electrical layouts. … Read more
1. Faults Caused by Capacitor Damage Capacitor damage is the most common fault in electronic devices, particularly with electrolytic capacitors. Signs of capacitor damage include: reduced capacitance; complete loss of capacitance; leakage; short circuit. Different capacitors serve various roles in a circuit, leading to distinct fault characteristics. In industrial control circuit boards, digital circuits dominate, … Read more
Recycling Market Value The price of waste circuit boards mainly depends on the content of precious metals inside. For example, the price of a ton of waste circuit boards from TV circuit boards is around 30,000 to 40,000 yuan. A ton of computer boards typically contains about: 300-500g of gold, 130kg of copper, 10kg of … Read more