A complete circuit board contains a large number of electronic components. Because of many uncertain factors, the damage of components is very common. When the equipment failure is mostly caused by the damage of components, then the detection and maintenance of components is very important, how to judge the quality of a component is a [...]
Time base circuit 555 various application circuits The 555 touch timing switch IC 1 is a 555 timing circuit, which is connected to a monostable circuit here. Normally, because there is no induction voltage at the P end of the touch pad, the capacitance C1 is discharged through the 7th foot of 555, the third [...]
The market analysis report of circuit board industry is an analysis of the market scale, market competition, regional market, market trend and attraction scope of circuit board industry. It means to analyze and judge whether the products of circuit board industry have a market in a limited time according to the market environment, competitiveness and [...]
The basic task of anti-interference design is that the system or device will not malfunction or lose function due to the influence of external electromagnetic interference, and will not send excessive noise interference to the outside world, so as not to affect the normal operation of other systems or devices. Therefore, improving the anti-interference ability [...]
Circuit board is the most active industry in the modern electronic components industry, and its industry growth rate is generally higher than that of electronic component industry by about 3 percentage points. From the development form, China's circuit board industry continues to grow at a high speed, and import and export have also achieved high-speed [...]
1. Communication between purchasing staff and suppliers Explain in advance the inspection time, personnel composition, and the matters that need the cooperation of the circuit board factory in the inspection process. Some regular enterprises need PCB manufacturers to provide their basic information before factory inspection, such as business license, tax registration, Bank of deposit, etc., [...]
We all know that diodes are very small, some are as small as needles, but they are very useful, The application fields are also very wide. Diodes are used in LED lights, electronic appliances, train and car electronic system components, circuit boards and so on. What are the classification, functions and working principles of diodes? [...]
Circuit board production will be tested in the end. The most important of all kinds of tests is electrical test, which is the original demand of circuit board. A circuit board will eventually match with electronic products. If the electrical characteristics can not meet, this circuit board is a failed product. What factors affect the [...]
The circuit board is broken. It can be repaired basically If there is only visible component damage, replace the component. If the circuit board is broken, and the circuit board can't see any damage, we should check the working conditions of each part according to the circuit diagram, and use the universal meter to check [...]
Automatic soldering machine has been widely used in the circuit board soldering industry, it improves the actual soldering efficiency, product consistency to a large extent, improve people's living consumption level, and put forward a higher level of consumer demand for product quality. In order to meet the market requirements, manufacturers should increase the product quality [...]