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One article understands the selection of protective devices PPTC, TVS, GDT

01 Self -recovery fuse PPTC selection With the rapid development of electronic products, the self -recovery fuse (PPTC) is now common in common applications in circuit design. Although there are many types of overcurrent protection methods, the self -recovery fuse is the ideal overcurrent protection element in terms of installation and use in terms of installation or performance efficiency, and because the self -recovery fuse is divided into plug -in fuses and patch fuses. Makes its application scenario wider, and the selection of its products is particularly important. Let ’s take a look at the selection steps of the self -recovery fuse with Kim Kaisheng! 1. First determine the parameters of the circuit: the maximum working environment temperature, normal working current (IHOLD), the largest work
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Electronic engineer essential: 10 classic circuits of computing amplifiers

Almost all electronic products need to be used for computing amplifiers, computing amplifiers (referred to as op amp). Its full English name is Operation Amplifier. A amplifier. Today, we will give you a science of the basic knowledge about the operation. Watch all the books and courses of simulated electronic technology. When introducing the operator circuit, it is nothing more than to give the circuit to a certainty. VO u003d (1+RF) VI, which is a reverse amplifier, and then draw VO u003d 0 -RF*VI. Finally, students often come to such an impression: remember the formula
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EDA electronic design automation: When will the "Achilles" developed by Chinese chips be cured?

For the fields of system design and verification, integrated circuits, PCB and other fields, the performance of Electronic Design Automation (EDA) tools and the development of the market itself play a vital role. As of the end of 2021, there will be a total of 35 billion IoT devices worldwide. From the perspective of downstream applications, the demand for EDA software will continue to grow. Note: The global EDA tool market growth trend chart "Electronic design automation (EDA) industry will exceed $ 20 billion in 2027." -Global Market Insights Inc. With the booming of the Internet of Things market, ED
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Too complete! How can hardware engineers design a power supply easily?

Most electronics systems need to be converted between energy supply voltage and circuit voltage required for power supply. When the battery is lost, the voltage decreases. Some DC-DC conversion can ensure that more energy stored in the battery is used to power the circuit. In addition, if we use 110 V AC lines, we cannot directly supply power such as microcontrollers. Because each electronic system uses almost a voltage converter (also known as the power supply), for many years, they have optimized different uses. Of course, optimizing the target is usually solution size, conversion efficiency, EMI and cost. Simple power supply: one of the simple power forms of LDO is the low voltage difference (LDO) regulator. LDO is a linear regulator relative to the switch stab. Linear
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Vehicle chip verification process and outlook

Abstract: Analysis shows that the rapid development of new energy and driverless cars, the role of vehicle regulatory chips is becoming more important. This is an important direction for the application of the chip industry. Explain the relevant verification processes and standards of integrated circuit design companies entering the field of vehicle -regulatory chips, relevant reliability verification and failure analysis of vehicle regulatory chips, explore the zero defective goals of the mass production of vehicle regulations, analyze the development of domestic car regulatory chips Existing problems, with its limitations, look forward to the direction of development. 0 Introduction With the in -depth development of automotive electronics, and the development direction of the new fourizations (electrification, networking, intelligence, and sharing) established by the automotive industry, this brings new opportunities to the application of semiconductor chips in the automotive field. In recent years, demand has developed rapidly, which has brought new industrial changes to the automotive market. Make
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Easy-to-get started with an embedded system (3) -how to ensure that your PCB design is more meaningful

In a project, the design of the PCB is just a specific implementation process. To let the weeks of the labor you pay for the real MeaningFul (meaningful), the early work is even more important. You need to pay more time and energy to ensure that you do later to do it later. The matter is in the right direction. The design process of the PCB is to turn the concept you envisioned into a practical and working system. For a simple example -the festival is coming, you want to design some cool effects with LED, and determine your own solution for the scenes, specific uses, feasibility, costs and other factors. Although the ultimate goal is a printing circuit board (PCB), the following process is still necessary
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Easy to get started with embedded systems (2) -neviability of some basic concepts of PCB

The first part of the entry course of the embedded system this week -PCB design. The goal of our course is set: master a PCB design skill to master a future useful programming language to deeply understand the composition and core points of the "embedded system".
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Choose a suitable car -level IGBT module: Interpret the first domestic IGBT standard

IGBT is called the insulation grid bipolar transistor, which is a widely used semiconductor device in the electrical electronics industry. The module described here is a specific form of packaging, which is the carrier of the IGBT chip and protects it. With the booming development of the new energy vehicle industry in recent years, more and more automotive -grade IGBT products have emerged. Understanding the semiconductor standards of the automotive industry can deepen the understanding of the characteristics of the device and help developers choose the right product. In the semiconductor standards in the semiconductor standard system, there are Jedec (Joint Electron Device Engineering Council), IEC (INTERNATIONAL ELECT
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3D animation explanation: The working principle of the transistor was finally shocked. Essence

In 1947, American physicist Socci, Badin and Blaton cooperated invented the transistor -a three -fulcrum semiconductor solid element. Because the transistor has the characteristics of low power consumption, small volume, relatively cheap price, flexible connection methods, etc., after the crystalline tube is released, many functions that cannot be achieved before are realized in electronic circuits, especially pulse circuits and digital circuits. Essence The following video is relatively intuitive and transparent. It is an excellent work for learning popular science. It is recommended that you see it (translated)! (Video source: Teded, Translation: @Turbo Xiaoxiao) The following animation is produced by Learnengineering, we can learn in the video very intuitively
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One article understands IGBT

The full name of IGBT is insulated gate bipolar transistor, which is a compound structure device. It combines the advantages of MOS transistor and BJT bipolar transistor. It is widely used in the fields of voltage-current conversion and power output, especially in the high-voltage and high-current fields. IGBT is one of the core semiconductor devices for human beings to control and utilize power. This semiconductor device is mainly used in the field of electronic power conversion, and we collectively call it power semiconductor. The simplest applications, such as our notebook computers, are equipped with power adapters, which are IGBT, which plays a role in the process of voltage increase and decrease and AC/DC change. Obviously, IGBT is the most important member of power semiconductors. Its function is to control electricity, and it is the core chip of electric energy conversion and application.
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