1. Pay attention to reset when there are large-scale integrated circuits on the circuit board to be repaired 2. Before the test, it is best to install the equipment back, turn on and off the machine repeatedly, and press the reset key several times 3、 Function and parameter test 1. < tester > the detection [...]
1. EPROM chip should not be damaged generally. Because this chip needs ultraviolet light to erase the program, it will not be damaged in the test WiFi microscope for circuit board detection WiFi microscope for circuit board detection Preface. But there is information introduction: due to the materials used to make the chip, it may [...]
Flexible waterproof casing - rigid waterproof casing - process and appearance The rigid waterproof sleeve is the main body of the steel pipe plus wing ring and sleeve. The ring made of steel plate is sleeved on the steel pipe and installed in the wall. It is mostly concrete wall, which is used for general [...]
Circuit board three proofing paint is a special formulation of paint, which is used to protect the circuit board and its related equipment from the erosion of bad environment, so as to improve and prolong their service life and ensure the safety and reliability of use. The three proofing paint is applied to the surface [...]
At present, there are four kinds of FPC: single-sided, double-sided, multilayer flexible plate and rigid flexible plate. ① Deep coupled circuit single-sided flexible board is the printed board with the lowest cost and low requirements for electrical performance. In case of single-sided wiring, single-sided flexible board shall be selected. It has a layer of chemically [...]
How hot is 5g now? Whether according to the latest statistics of the Ministry of industry and information technology, nearly 960000 5g base stations have been built in China, or according to the indicators of the 5g application "sailing" action plan (2021-2023), the number of 5g base stations in China will reach more than 2.52 [...]
Copper clad ceramic substrate is made of metallized copper on the ceramic substrate to achieve better electrical performance and thermal conductivity. It is also used as insulating thermal conductive plate in many fields. Today, Xiaobian will share some characteristics, processes, processes and applications of copper clad ceramic substrate. 1、 Characteristics, advantages and disadvantages of copper-clad [...]
In PCB design, pad is a very important concept, which must be familiar to PCB engineers. However, although familiar, many engineers know little about pads. Today, let's learn about the types of lower pads and the design standards of pads in PCB design. Pad, the basic unit of surface mount assembly, is used to form [...]
Sometimes customers often wonder what the process flow of PCB is, and even some peers who are new to the industry are confused. When making an inquiry, customers often say that the board is very simple, and you can tell the price. In fact, the process of PCB depends on the number of layers, vias, [...]
Recently, the consulting firm trend force obtained news from the supply chain that the circuit board of Apple's iphone13 has been completely optimized After the circuit board is changed, a larger battery can be placed. It is revealed that the new iPhone 13 will increase the battery capacity by at least 10% compared with the [...]