【Introduction】Our statistical results in practical work confirm that the main cause of data loss, hardware failure and downtime is the failure of the communication switch power supply system. The chan...
I would like to ask about the PWM motor with two driving modes shown in the above figure. The current motor speed changes greatly with the changes of temperature (+20℃→-30℃) and voltage (DC 12V→10.2V)...
5G is getting closer and closer, and everyone at CES 2019 in Las Vegas was talking about what it will do.
China's three major operators have basically determined the first batch of 5G pilot cities. Cu...
Linux has occupied half of the embedded operating system market with its advantages such as open source, high efficiency, customizability and small kernel. The wide application of embedded Linux in th...
Watch the keynote speech by RohdeSchwarz to get a more intuitive understanding of 5G and win prizes!Click to watchEvent time: From now until March 25, 2020
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1 Introduction
Direct digital synthesizer (DDS) technology has the advantages of fast frequency switching speed, easy to improve frequency resolution, low hardware requirements, programmable...[Details]
Platform: mini2440 Touch screen: Sony x-35 3.5 inch touch screen 1.0, touch screen and LCD The touch screen and LCD are two independent screens. We have already talked about LCD, but I will men...[Details]
On March 13, the assembly of N4467 tower of the ±800 kV Ya'an-Jiangxi UHV DC transmission project Xiang 3 section was completed.
The ±800 kV Ya'an-Jiangxi UHV project is a key power transmissi...[Details]
The current transformer should be subjected to a polarity test before and after handover and overhaul to prevent the polarity from being wrong during wiring, which may cause the protection device t...[Details]
Automobile testing is an important means to discover various problems in automobile design and development. Based on the test results, an objective evaluation of various automobile performances can ...[Details]
The multimeter I used was UT61E. I always thought it was quite accurate when measuring voltage and resistance. I also compared it with a 6.5-digit desktop multimeter. It felt OK, with an error of abo...[Details]
01Overview The portable alcohol content tester is an instrument specially designed to test the alcohol content in human exhaled breath. It can quickly check by itself, help predict whether you are in...[Details]
Now, while major mobile phone manufacturers are competing with each other to develop their new mobile phones, the IoT field has become a key target for everyone to compete for. With the rapid constru...[Details]
In the last proposal, I introduced a 4MIC noise reduction conference audio solution based on DSPG D7, which was favored by many customers, and many customers also filed many projects. Thank you for...[Details]
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Lithium-ion (Li-Ion) batteries and other battery chemistries not only play a key role in the automotive industry, but are also the workhorse of energy storage systems (ESS)...[Details]
Recently, two new Huawei 5G models, ANA-AN00 and ELS-AN00, passed the 3C certification. It is reported that these two models are the upcoming Huawei P40 series. According to the certificat...[Details]
51 MCU Pin Diagram 51 MCU System Structure
The traditional 51 MCU is DIP40 (dual in-line 40 pins), and there are also PLCC44, which are mostly used in places where the boa...[Details]
summary
This article provides the thermoelectric cooler (TEC) concepts that must be understood before designing higher power TECs, explains the key Peltier characteristics that lim...[Details]
According to China Business News, yesterday afternoon, Duan Mengran, vice president of Huawei's consumer business AI and smart full-scenario business department, announced the Harmony OS meta-...[Details]
On October 30, the world's highest altitude and largest installed capacity independent grid-connected energy storage power station - the 100MW/400MWh independent grid-connected energy storage proje...[Details]