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China State Grid announced that it will build a nationwide smart grid by 2020, and has invested 4 trillion yuan in basic design and construction. The implementation of this grand plan will involve a ...[Details]
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SPI bus is a three-wire synchronous interface introduced by Motorola. It communicates in a synchronous serial 3-wire mode: a clock line SCK, a data input line MOSI, and a data output line MISO. It i...[Details]
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It’s only been a few months since Huawei announced the Kirin 9000 processor, and now a whistleblower has revealed details about Huawei’s next-generation flagship Kirin processor, which is reportedly ...[Details]
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Over the past few years, Applied Materials has been at the forefront of exploring big data analytics for semiconductor manufacturing. In addition to sponsoring major technical conferences such as the...[Details]
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1. The concept of interruption When the CPU is processing an event A, another event B occurs, requiring the CPU to process it quickly (an interrupt is generated); The CPU temporarily interrupts the c...[Details]
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External interrupt software design principles Three conditions for interruption to occur ①The interrupt source has an interrupt request; ②The interrupt enable bit of this interrupt source is 1; ③CPU ...[Details]
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LM3886 is a mono, medium power, high performance audio amplifier IC, and is one of the representative ICs in the "Overture" audio amplifier series of National Semiconductor (NS). It uses an 11-pin TO-...[Details]
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Double data rate (DDR) memory technology has grown dramatically over the past five years as oscilloscope users have demanded faster, lower power, and smaller memory. DDR4 stands for the fourth gene...[Details]
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With the continuous improvement of microelectronics process technology and IC design technology, the entire system can be integrated on a single chip, and the complexity of system chips is increasi...[Details]
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I believe that friends who have repaired many circuit boards must have encountered the situation of public power short circuit. In most cases, when you use a multimeter to test the resistance value b...[Details]
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This article is only for beginners, experts please skip it! This article introduces the debugging steps after the Type III test board is welded. 1. Preparation before power on Aft...[Details]
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How to interpret the nameplate model of three-phase asynchronous motor
The following information is usually marked on the nameplate of a three-phase asynchronous motor:
Rated Voltage: The...[Details]
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The circuit of this power supply is shown in the figure below.
1. Charging circuit and its debugging
Initially, influenced by some cheap universal mobile phone chargers, the constant curren...[Details]
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According to foreign media reports, a person familiar with the matter told Reuters that the FBI is investigating a recent cyber attack on German auto parts supplier Continental. Image source: Ma...[Details]
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Servo motors are a very important type of drive equipment in the field of modern industrial automation and are widely used in robots, CNC machine tools, automated production lines and other occasio...[Details]