Date：2022-03-03 15:23:00

With the progress of the times and science and technology, more and more circuit boards use chip components. SMT chip components are more and more popular because of their small size and easy maintenance. In PCBA processing, SMT chip components are particularly small in size and light in weight. SMT chip components are easier to weld than lead components. There is also a very important advantage of chip components, which is to improve the stability and reliability of the circuit. For PCBA processing, it is to improve the success rate of manufacturing. View >>

Date：2022-03-03 14:55:00

Nondestructive testing is a modern way of testing and evaluation without damaging the items to be tested. Nondestructive testing is no longer just using X-ray nondestructive testing, including acoustic, electrical, magnetic, electromagnetic wave, neutron, laser and other physical phenomena are almost used in nondestructive testing, such as ultrasonic nondestructive testing, eddy current nondestructive testing, magnetic particle nondestructive testing, radiographic nondestructive testing, penetrant testing, visual testing, infrared testing, microwave testing, leakage testing Acoustic emission detection, magnetic flux leakage detection, magnetic memory detection, thermal neutron photography detection, laser speckle imaging detection, fiber Bragg grating sensing technology detection and so on, and new methods and technologies are constantly developed and applied. View >>

Date：2022-03-03 14:15:00

Electronic components have different packaging types. The shapes of different types of components are the same, but the internal structure and uses are very different. Complex electronic circuits are also composed of these electronic components. For component identification, it can be distinguished by the printing model. For components without characters, it can also analyze the circuit principle or measure the component parameters with a multimeter. So, what are the common components on PCB board? In order to help you have an in-depth understanding, the following contents are sorted out by Chuangxin testing network for your reference. View >>

Date：2022-03-02 17:56:00

The electrical performance of electronic and electrical equipment directly affects the safe and reliable operation of the whole electrical system. In order to ensure the safety of equipment, all electronic and electrical equipment must pass various type tests in the production and manufacturing process to ensure the safety of electrical environment. Electrical performance test includes the test of basic parameters of conductor or insulation quality, such as conductor resistance, insulation resistance, correct value of dielectric loss angle, capacitance, etc. The higher the working voltage of the cable, the stricter the requirements for its electrical performance. View >>

Date：2022-03-02 17:18:00

Chip is a way to miniaturize circuits in electronics, and is often manufactured on the surface of semiconductor wafers. In addition, chip has also been widely used in the fields of communication and network. So what is the general cause of chip damage? View >>

Date：2022-03-01 18:08:00

In addition to rich theoretical knowledge and practical operation, the troubleshooting method of electronic circuit fault is also very important. A good method can get twice the result with half the effort. So how should the electronic circuit troubleshoot? Generally, it can be detected by input to input sequence or by the reverse method from output to input. No matter from which direction, electronic circuit fault detection can generally be judged by the following eight methods. View >>

Date：2022-03-01 16:38:00

MOS transistor, also known as field effect transistor, is a common power device in the circuit. According to the material structure, it is divided into two types: n-channel MOS tube and p-channel MOS tube. The letter of FET represents the material, D is p-type silicon, and the inversion layer is n-channel; C is the n-type silicon p-channel. For example, 3dj6d is a junction type p-channel field effect transistor, and 3do6c is an insulated gate type n-channel field effect transistor. The following describes the MOS FET parameter comparison table and main specifications. View >>

Date：2022-02-28 15:21:45

Reflow soldering is to realize the mechanical and electrical connection between the solder end or pin of surface assembled components and the PCB pad by remelting the paste solder pre allocated to the PCB pad. Reflow soldering technology is no stranger in the field of electronic manufacturing. The components on various boards and cards used in our computer are welded to the circuit board through this process. There is a heating circuit inside the equipment, which heats the air or nitrogen to a sufficiently high temperature and blows it to the circuit board with the components pasted, so that the solder on both sides of the components melts and bonds with the main board. Next, let's introduce the technical indicators and defect analysis of circuit board reflow soldering. Let's have a look. View >>

Date：2022-02-28 14:43:00

Failure analysis is a necessary means to determine the failure mechanism of chip, which provides necessary information for effective fault diagnosis. Failure analysis provides necessary feedback information for design engineers to continuously improve or repair the chip design and make it more consistent with the design specification. With the continuous improvement of people's requirements for product quality and reliability, failure analysis is becoming more and more important. How to deal with chip failure analysis? Sort out relevant data as follows: View >>

Date：2022-02-28 14:22:00

Casting is one of the basic processes of modern machinery manufacturing industry. It has the advantages of low cost, one-time forming and can manufacture large parts with complex structure. It is widely used in many fields of industrial production, such as automobile parts, machinery manufacturing, electronics, medical devices, clocks and watches, hardware products, aviation and aerospace. X-ray nondestructive testing has become the main method of casting defect detection because it can avoid material waste and improve production efficiency. View >>