How do home outlets distinguish between neutral and gro…

The decoration electrician is not responsible. The lower socket line is actually three of the same color. Now I don't want to use this worker. I have to connect the socket myself. How do I judge the zero line and the ground line? I believe many of my friends have the same ...more...

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The most important thing is to buy TV picture quality: …

By the end of the year, there have been a lot of promotions and promotions for manufacturers. Many friends are ready to buy a new TV to welcome the arrival of the New Year. However, in the face of a dazzling array of TV brands and models, it is necessary to choose an excelle ...more...

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Is Apple airpods easy to use, and the personal trial ev…

In Apple's 2017 iPhone conference, in addition to the iPhone 7, it also brought us a wireless Bluetooth headset AirPods. The most eye-catching product is Apple ’s latest wireless headset AirPods. Since the iPhone 7 cancels the 3.5mm headphone jack and uses the Light ...more...

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A picture to understand the Qualcomm QC1.0-QC4.0 fast c…

Fast charging technology is changing with each passing day. Today, Qualcomm QC Fast Charge still dominates the market. Now QC fast charge has been developed to the fourth generation, each generation has revolutionary progress. From QC1.0 to QC4.0, the replacement time is short ...more...

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EMC study of RF circuits and antennas

When the RF circuit is designed according to the preset scheme, its performance may not be fully met. One of the important factors that may cause the RF performance to fail to meet the standard is electromagnetic interference, which is not necessarily due to RF. The layout of ...more...

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Security upgrade for FPGA-based embedded systems

How to prevent the device from "brickming", is it enough to issue a warning? "The system is being updated, please do not turn off the power." We have seen this warning, which usually occurs when the electronics are to be updated in the flash installation ...more...

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Analyze variable compression ratio engine (VCR) and its…

In August, Nissan announced the first 2.0-liter mass-produced supercharged gasoline engine with variable compression ratio (VCR - Variable Compression RaTIo) to be used in the next generation Infiniti QX50. The car will be officially unveiled at the Paris International Motor S ...more...

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