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1 Introduction
As a new type of lighting technology, LED has the advantages of low energy consumption, long life, small size, dimmable, flexible control and environmental protection. Its appl...[Details]
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According to the definition of the current national standard "Low Voltage Distribution Design Code" (GB50054), low voltage distribution systems are divided into three types, namely TN, TT, and IT. ...[Details]
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Siemens motor variable frequency speed control was previously implemented in the drive controller, such as the Cu320, Cu310 and other control units, and configured using Scout software. For users, ...[Details]
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Operator selection
For operators, it is necessary to cultivate and support the public's demand for 3G mobile video surveillance, which is a win-win situation for both parties or even multi...[Details]
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At present, contactless smart card technology is used in hospital access control, computers, IT login systems and medication dispensing systems, which can help hospitals better control the safe e...[Details]
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Apple wants to make iPhone and iPad screens better at recognizing touches and gestures even when they're wet or humid, and now a newly granted patent shows that Apple is working on how to comp...[Details]
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TL494 is a voltage-driven pulse width modulation control integrated circuit, which is widely used in various switching power supplies. You may not be familiar with how it works together with the corr...[Details]
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The automotive battery power line is prone to transients when running the system. Typical protections required include overvoltage, overload, reverse polarity, and jump starting. During the life cy...[Details]
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At midnight on June 23rd, Beijing time, Qimai AppSA tested and found that the ASA backend can create bidding plans for mainland China. This means that ASA (full name Apple Search Ads) is finally open...[Details]
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1. Experimental tasks As shown in Figure 4.14.2, use the parallel port P1 of AT89S51 to connect to a 4×4 matrix keyboard, use P1.0-P1.3 as the input line, and use P1.4-P1.7 as the output line; it ...[Details]
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We increasingly rely on technology to provide us with a sense of security: cameras, emergency phones and even security LED lighting give us a sense of reliability, letting us know that they are alway...[Details]
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National Evaluation and Inspection Center settled in Pudong, Shanghai
Recently, the Pudong branch of the National
Robotics
Testing and Assessment Center (Headquarters) officially m...[Details]
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Since I have worked on 2440 and 6410 before, due to time constraints, I will temporarily skip the bare metal driver and uboot porting of other modules and directly enter the study of kernel porting an...[Details]
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Abstract: When the motor capacity is large, the impact of the input harmonics of the high-power inverter on the power grid and the impact of the output harmonics on the motor have become prominent pro...[Details]
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Since RS-422 and RS-485 buses have the characteristics of strong anti-interference ability, high communication rate, long communication distance, and the ability to communicate with multiple slaves, ...[Details]
Automotive Electronics
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