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US media said that the trade war is having an impact on Apple, and a recent survey on Chinese consumer attitudes confirmed this. According to a Bloomberg report on September 20, in this annual repo...[Details]
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Recently, a labor group in Atlanta withdrew their union petition, claiming that Apple has implemented illegal union-busting tactics. The Communications Workers of America, which had been organizing...[Details]
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IntroductionIn modern society, the creation of urban civilization and the development of a harmonious society cannot be separated from the inspection work of law enforcement agencies such as...[Details]
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The concept and working principle of frequency converter
A frequency converter is a power regulation device that can convert the frequency and voltage of a power source (usually AC power) into...[Details]
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LED (Light Emitting Diode) is a light-emitting component. Its structure is actually a PN junction of a semiconductor. The basic working mechanism is an electro-optical conversion process. That is, whe...[Details]
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1 Introduction
Carbon monoxide (CO) is a highly toxic gas. When inhaled by humans, it causes hypoxia in human tissues and cells, leading to poisoning and suffocation. In coal mines, CO is also ...[Details]
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Previously used primarily in high-power power supplies and large industrial and consumer power supplies, supercapacitors are now finding their way into products of all sizes, especially portable de...[Details]
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In modern industrial control systems, with the widespread use of power electronic devices such as frequency converters, the electromagnetic interference of the system has become increasingly seriou...[Details]
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The signing ceremony for the joint artificial intelligence laboratory (hereinafter referred to as the joint laboratory) jointly established by Unisoc and Xi'an Jiaotong University was held in Xi'an. ...[Details]
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System hardware design
Archive library temperature and humidity controller based on C8051F020, the master device is 8051F020, and the slave device is I2C bus digital temperature and humidity sensor S...[Details]
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I originally wanted to use the debug function of IAR to debug the stm8 board through st-link and check the value of the variable. However, I couldn’t see any change in the result and it kept showing ...[Details]
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Require 1. Complete the application design in Keil IDE (u Vision2) and compile 2. Complete circuit design, debugging and simulation in ISIS 7 Professional /** I use a timer in my code to control...[Details]
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Preface
According to the data from the China Passenger Car Association, the domestic retail penetration rate of new energy vehicles was 27.4% in June 2022, and on June 29, 2022, the European U...[Details]
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Positive connection method:
This method is used when the low-voltage measuring end or secondary end of the device under test is insulated from the ground. Lead the red special high-voltage cable fro...[Details]
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The self-shunt generator is a special type of generator that generates electrical energy through its own magnetic field. This type of generator is widely used in power systems, industrial equipment...[Details]
Analog electronics
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