The life of lithium batteries varies depending on the type. Theoretically, the average life of lithium batteries is more than 500 times. If we charge them once every three days, the theoretical life o...
The production of PHS continues to decline 2006-6-8 The Ministry of Information Industry released the latest survey of the electronic information industry on June 6, which showed that from January to...
[size=4]The special function register SFR of the microcontroller is an SRAM unit with a fixed SRAM address. There are two ways to access it in the C language environment. [/size] [size=4] [/size] [siz...
[i=s] This post was last edited by Rambo on 2019-5-14 14:23 [/i] [align=left][color=#000][font="][size=3]Complementary filtering principle: [/size][/font][/color][/align][align=left][color=#000][font=...
I recently used a serial port screen. The voltage of the serial port screen is 5V, so the voltage of the serial port communication is also 5V. My main control is powered by 3.3V. I originally wanted t...
[i=s] This post was last edited by Sevenfee on 2018-11-6 20:32 [/i] [size=14px]Using PIC16F887 microcontroller to generate square wave, when I set the square wave frequency to 4KHz, the waveform is no...
A while ago, there was a joke on the Internet: A user claimed that his iPhone 5 was bent by someone sitting on it, and the screen was broken, and asked Apple what to do? Apple said helplessly, "The p...[Details]
What is a microcontroller? Before learning, you must understand what this thing is, how to use it, and why it can be used in this way. If you understand these three questions, then you can learn the ...[Details]
This article introduces a flyback constant voltage, constant current 75W LED driver with single-stage (single switch) PFC . The circuit is shown in the figure. The AC input voltage range is 208~277...[Details]
In the first half of 2021, Advantech launched the new EPC-R3720, which was well received by the market, and customers have been borrowing and testing this model. With more powerful computing power an...[Details]
The industry generally believes that the core terminal of smart homes in the future will be smart TVs. With the enhancement of functions such as intelligence, voice control, and artificial intelligen...[Details]
In March 2021, the Ministry of Science and Technology officially approved the support for Guangdong and Jiangsu provinces to build the National Third Generation Semiconductor Technology Innovation Ce...[Details]
On March 25, State Grid Corporation of China held the first meeting of the Science and Technology Leadership Group in 2020 to thoroughly study and implement the important expositions of General Sec...[Details]
On December 30, 2021, Zhejiang Kunteng Infrared Technology Co., Ltd. (hereinafter referred to as "Kunteng Infrared") completed the on-site signing of the B round of financing and capital increase agr...[Details]
1 Introduction Normally, printers, mass storage devices and other devices are driven by ordinary PCs. Since a large number of measurement and control, medical and other systems need to store and pr...[Details]
At Intel's Investor Day held on the 8th local time in the United States, the company's CEO Bob Swan and President Murthy Renduchintala talked about Intel's chip development roadmap. In the roadmap, I...[Details]
Schematic representation of: a) fabrication of HPE, b) interface-based core-shell and HPE-supported lithium ion diffusion design, c) integration of HPEIC|Li SSB, and d) advantages of HPEIC over st...[Details]
Related documents attached
For more information about Usage ID, please refer to http://www.freebsddiary.org/APC/usb_hid_usages
Appendix 2: Related documents http://pan.baidu.com/s/1i3J1ftN
...[Details]
Trigger circuit with sawtooth wave as synchronization signal
Phase-controlled circuit refers to a thyristor controlled rectifier circuit, which controls the output voltage by controlling the siz...[Details]
This system requires the design and production of a simple smart electric car. The design plan includes basic requirements, development parts and other innovative parts.
basic requirements
...[Details]
Power technology
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