Portable energy storage power supply, also known as outdoor power supply, is a small energy storage device with a built-in lithium-ion battery. It can provide a power supply system with stable AC/DC v...
Various types of wireless communication technologies support devices to achieve data communication between devices or between devices and serial port servers without cable connection, all of which are...
The current usage is that two 12V systems from different sources share one relay (HF105F), and each 12V output is converted by a transformer and DCDC. The usage scenario is: each 12V system can drive ...
[size=3]The emulator that has been used normally on Windows 7 operating system cannot recognize the driver on Windows 7 after the emulator is upgraded to V3 firmware. After repeated attempts, there is...
Since I have G D32C8T6 and 12864 LCD color screen, and some PCB manufacturers have very favorable policies, I decided to make a music spectrum display for fun.Design goals: small, low cost, battery po...
[align=left][color=rgb(85, 85, 85)][size=4]For many people, their first exposure to energy harvesting was probably in the early days of solar-powered pocket calculators. While these types of calculato...
(1) Structure of pointer-type insulation resistance meter The common pointer-type insulation resistance meter mainly consists of a hand-cranked DC generator, a magnetoelectric ratio meter and a meas...[Details]
background
Engineers use structural vibration to assess the condition of many structures and machines, including buildings, bridges, dams, towers, cranes, and brackets. Although we have had tools...[Details]
The main purpose of this experiment was to make a two-tone doorbell that could make a "ding dong" sound. In the end, although the circuit board was soldered and the components were assembled, it still...[Details]
Earlier, the well-known whistleblower evleaks revealed that the Huawei P40 series will be officially released on March 26, and the renderings of the Huawei P40 series were also exposed. Today, Digi...[Details]
As a new technology for fast, real-time and accurate information collection and processing, Radio Frequency Identification (RFID) technology uses radio frequency signals to automatically identify sta...[Details]
Luo Chunlin Wang Jiajun
On November 18, 2014, the Southwest Branch of State Grid Corporation of China was established in Chengdu, Sichuan. Since its establishment, the Southwest Branch of Stat...[Details]
Since the mid-to-late 1980s, IC (integrated circuit) packaging technology has been developing towards high integration, high performance, multi-lead and fine pitch, and has driven the elimination and ...[Details]
References: Keil Help uVision Help Cx51 Compiler User's Guide Language Extensions Data Types Keil Help uVision Help Arm Compiler 5 User's Guides Compiler User Guide C and C++ Implementation...[Details]
Armstrong Tsai, spokesman for MCU major Holtek, said that due to the long-term capacity supply contracts signed with foundry partners, the company expects to significantly increase the production of ...[Details]
On April 28, the People's Government of Xiqing District, Tianjin issued the "Carbon Peak Implementation Plan for Xiqing District, Tianjin", which mentioned:
Accelerate the construction of a ne...[Details]
Abstract: Discusses the working principle of the differential frequency high-frequency chain bidirectional synchronous demodulation control circuit, and analyzes the control method of the bidire...[Details]
This example is completed under the win10 operating system using keil4 "c51v956" version Sector distribution of STC89C52RC: /********STC89C52 sector distribution******* The first sector: 2000H...[Details]
According to foreign media reports, two members of the U.S. House of Representatives are launching a bipartisan joint action to promote legislation for self-driving cars. Republican Reps. Robert La...[Details]
As a former leader in displays, Japan is undoubtedly glorious, but in the OLED era, they seem to be unable to keep up with the pace, but this does not mean they will give up. According to Korean me...[Details]
IC555 and R1, R2, C1 form a 100KHz controllable multivibrator with a duty cycle of 50%. The audio signal is input to the control terminal 5 pin, and the 3 pin gets a pulse signal whose pulse width is...[Details]
Power technology
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