Help, we are working on a project, using STM32F103C8T6, SIM800C 2G network, RC522 on the motherboard for radio frequency identification, currently 120 have been produced, more than 70 have been put in...
[color=#a0522d] With the popularity of smart phones, mobile power banks, as one of the supporting equipment, have also become a necessity in people's lives. However, there are more than just mobile po...
[color=#ff0000]Statement: 1. By default, it is sent by STO Express. It costs 10 yuan within the province and 15 yuan outside the province! 2. If there is information, it will be stated that the inform...
[A very comprehensive technical post, which is very helpful to members, especially the newcomers in security can seriously study this post by the OP] Due to work reasons, I have been sorting out some ...
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
1. Overview
At present, an information revolution is in the ascendant around the world, led by microelectronics, computers and communication technologies, and centered on information technolog...[Details]
1 Introduction
With the improvement of people's quality of life, lamps are no longer just basic indoor lighting tools, but also a kind of practical art for architectural decoration. When ther...[Details]
Introduction
In industrial control, speed measurement is often required. Generally, a contact tachometer is used. This tachometer must be placed against the center of the shaft to measure. It...[Details]
Overview
By transmitting ultrasonic energy into the human body and receiving and processing the returning reflected signals, phased array ultrasound systems can generate images of organs and s...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
In recent years, with the increasing maturity of LED technology, LED light sources have been increasingly widely used due to their advantages of using low-voltage power supply, low energy consumpti...[Details]
1. Project Introduction
Beijing Benz-Daimler Chrysler Co., Ltd. is a joint venture between Beijing BAIC Group and Benz-Daimler Chrysler. In October 2005, it started to build a new automobile ...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
System Block Diagram
The system uses DSP56F826 chip as the core control module and CMOS digital image sensor chip. The image acquisition resolution can reach 640×480 pixels. When high-re...[Details]
Abstract Aiming at the harm caused by mobile phone microwave radiation to human body and the incompatibility between mobile communication network and fixed-line network, a PSTN voice gateway using ...[Details]
LED headlight
Refers to car headlights that use white LEDs. Toyota's top-of-the-line hybrid car, the Lexus LS600h, released on May 17, 2007, was equipped with white light-e...[Details]
New processors in laptops place higher demands on power supplies: higher current, faster response to load steps, and faster adjustment of output voltage after the voltage identification (VID) code ...[Details]
1 Introduction
The development of fieldbus technology has made a big step forward in the process of control systems from closed to open. Open control systems based on fieldbus have begun to enter th...[Details]
Integrated technical exchanges
京公网安备 11010802033920号
EEWORLD
