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Component quality control three methods! Buyer, please keep it
The braid is abnormal, the surface is textured, the chamfer is not round, and it has been polished twice. This batch of products is fake.” This is the conclusion recorded solemnly by the inspection engineer of the appearance inspection group after meticulously examining a component under th...Read more -
Common type of IC reconditioning material
With the maturity of the integrated circuit industry scale, and the promotion and popularization of the application field, more and more Sanxin IC chips emerge on the market. At present, there are many fake and shoddy products circulating in the market of electronic com...Read more -
Chip shortage and fake chip phenomenon from distributor’s perspective
Evertiq previously published a series of articles looking at the global semiconductor market from the perspective of distributors. In this series, the outlet reached out to electronic component distributors and purchasing experts to focus on the current semiconductor shortage and what they are do...Read more -
AS6081 test standard
Testing and Inspection Minimum sample size level The batch quantity is not less than 200 pieces Batch quantity: 1-199 pieces (see Note 1) Necessary test A level Contract text and encapsulation A1 Contract Text and Packaging inspection (4.2...Read more -
Why is the CAN bus terminal resistor 120Ω?
The CAN bus terminal resistance is generally 120 ohms. In fact, when designing, there are two 60 ohms resistance stringing, and there are generally two 120Ω nodes on the bus. Basically, people who know a little CAN bus are a little bit. Everyone knows this. There are three effects of the CAN bus...Read more -
Why is SiC so “divine”?
Compared with silicon-based power semiconductors, SiC (silicon carbide) power semiconductors have significant advantages in switching frequency, loss, heat dissipation, miniaturization, etc. With the large-scale production of silicon carbide inverters by Tesla, more companies have also begun to l...Read more -
What is pulling current, irrigation current, absorbing current?
Pull current and irrigation current are parameters of measuring circuit output drive capabilities (note: pulling and irrigation are all for the output end, so it is the driver capacity) parameters. This statement is generally used in digital circuits. Here we must first explain that the pull and...Read more -
The difference between isolated and non-isolated power supplies, a must read for beginners!
“A 23-year-old flight attendant of China Southern Airlines was electrocuted while talking on her iPhone5 while it was charging”, the news has attracted wide attention online. Can chargers endanger lives? Experts analyze the transformer leakage inside the mobile phone charger, 220VAC a...Read more -
Motor -level MCU knowledge combing
A traditional fuel vehicle requires about 500 to 600 chips, and about 1,000 light -mixed cars, plug -in hybrids and pure electric vehicles require at least 2,000 chips. This means that in the process of the rapid development of smart electric vehicles, not only the demand for advanced process ch...Read more -
Learn these two circuits, PCB design is not difficult!
Why learn power circuit design The power supply circuit is an important part of an electronic product, the design of the power supply circuit is directly related to the performance of the product. Classification of power supply circuits The power circuits of our electronic products mainly includ...Read more -
Key components of energy storage system -IGBT
The cost of energy storage system is mainly composed of batteries and energy storage inverters. The total of the two constitutes 80%of the cost of electrochemical energy storage system, of which the energy storage inverter accounts for 20%. The IGBT insulating grid bipolar crystal is the upstream...Read more -
Dry goods | One article gets the generation, measurement and suppression of the switching power ripple
The switching power ripple is inevitable. Our ultimate purpose is to reduce the output ripple to a tolerable level. The most fundamental solution to achieve this purpose is to avoid the generation of ripples. First of all And the cause. With the switch of the SWITCH, the current in the inductanc...Read more