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Deep analysis! Power semiconductor on the car (2)

Updated: 2022-03-17
Views: 7404

The power-driven system is mainly used in the inverter DC-AC, and the DC electricity conversion of the charging battery 12V is converted into an AC electric drive motor of the drive motor 220V. Dozens of IGBTs need to be used on the motor control system. After output high voltage from the battery, it needs to be change……

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It's time to understand oxidation

Updated: 2022-03-17
Views: 6578

In the IEEE SPECTRUM Chinese version of "Science and Technology Observation" in May 2002, the late Lester F. East-Man and Umesh K.Mishra (Umesh K.Mishra) Speaking of a bold technology in the power semiconductor industry at the time: Nitride (GAN). They expressed an optimistic view on the prospects of the emerging broad……

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Dry! PLC on -site installation and debugging throughout the process of combat experience

Updated: 2022-03-17
Views: 6899

The installation and debugging of the PLC control system involves various tasks, and it can only be carried out in order. One ring is closely linked to one ring. A little carelessness will cause the debugging failure, which will not only delay the construction period, but even damage the equipment. This article introdu……

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The principle of shallow analysis of PWM control motor speed

Updated: 2022-03-17
Views: 6817

The principle of frequent DC motors is electromagnetic magnetic: the power -powered wire will produce a magnetic field. That is, the electromagnetic induction rotation magnetic field drives the rotor. The motor is composed of stator and rotor, one generates a rotary magnetic field, one is the magnetic pole, and the rot……

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What is the difference between synchronous rectification and non -synchronous rectification?

Updated: 2022-03-17
Views: 6910

The switching power supply is charged inductive and inductive energy storage when the power tube is turned on; when the power tube is turned off, the induction releases energy, thereby achieving voltage transformation. When the power tube is cut off, the energy release of energy requires a current circuit. The selectio……

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The damping oscillation of the switching power supply

Updated: 2022-03-17
Views: 6533

In the first two issues, the RCD circuit is inevitably mentioned. From this I thought of our most commonly used circuit, Buck circuit. Buck oscillating wave -shaped buck circuit The SW waveform in front of the inductance, everyone must have measured it. In general, there are nothing in the following two: whether it is ……

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The strongest summary: 27 simulation circuit basic knowledge!

Updated: 2022-03-17
Views: 7477

01 What is the content of Kirhoff's theorem? Kirhoff's current law: At any point in the circuit, the algebra that flows into and out of the node current is zero……

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Super semiconductor

Updated: 2022-03-17
Views: 6736

Author: gregg H. Jessen in the Chinese version of "Science and Technology Observation" in the May 2002 issue of IEEE SPECTRUM, the late Leist F. East-Man (Umesh K.Mishra) talked about a bold technology in the power semiconductor industry at the time: Nitride (GAN). They expressed an optimistic view on the prospects of ……

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Simulation integrated circuit design process -layout design basis (2)

Updated: 2022-03-17
Views: 7992

Due to the simple design of the anti -phase device and the small number of devices, the demonstration of the Layout L tool after this article is still using the Layout XL tools. You can test it by yourself. After adjusting the NMOS and PMOS transistors, select the device, press the shortcut key Q according to the size ……

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Simulation integrated circuit design process -layout design basis (1)

Updated: 2022-03-17
Views: 7634

In the design of the simulated integrated circuit, in addition to the design and simulation of the circuit, the layout design is also very important. The quality of the layout design is directly related to the performance of the chip. The next few contents will learn the content of the layout design with you. How is th……

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Three design schemes of Hengli circuit

Updated: 2022-03-17
Views: 6721

As a hardware R \\u0026 D engineer, I believe that it will not be unfamiliar with the constant current circuit. This article describes the principle diagram of the three constant current circuits. The conformity circuit of the triode constant pipe constant flow circuit of the transistor circuit is mainly to use the bas……

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IC design changes, "fixed numbers" and "variables" of EDA tools

Updated: 2022-03-17
Views: 6914

In this era, it is not possible to change in this era for EDA manufacturers. Flexibility will become an important performance indicator of the EDA tool, and flexibility is the ability of clouds. Frank Schirrmeiste said: "The industry is ushered in the era of SaaS as an EDA tool use model. Automation will provide users ……

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