I am working on a software phase-locked loop for a three-phase power grid (see attached picture), and I have come across some problems. 1) When the input voltage is very low, such as 0.1pu, the SPLL c...
I received the touchpad, it is very delicate, and the board comes with a manual:Let me tell some lazy people how to use this board quickly, experts can skip it. First, solder the two rows of pins on t...
[b][size=16pt][url=http://www.bcae.com.cn/product/bcae_14.html][color=black][font=宋体]A brief analysis of the important role of vibration meter in equipment detection[/size][/font][/b][b][size=16pt][/s...
The design of mixed-signal circuit PCB is very complex. The layout and wiring of components and the processing of power and ground will directly affect the circuit performanceand electromagnetic compa...
[table] [tr][td=97][align=left]Year[/align][/td][td=212][align=right][align=left]Invention, discovery or creation[/align][/align][/td][td=258][align=right][align=left]Inventor, discoverer or creator[/...
Project Overview
The micro urine analyzer we designed can detect ten parameters of urine, including white blood cells, nitrite, urobilinogen, protein, pH value, occult blood, specific g...[Details]
Designers of hearing aids have stringent requirements. Hearing aids must be small enough to fit in or behind the ear, operate on ultra-low power, and be free of noise or distortion. To meet these requ...[Details]
Preface
Sleep apnea is a very common sleep breathing disease. According to research, about 24% of adult men and 9% of adult women, or more than 2 million people, suffer from this disease ...[Details]
With the rapid development of digital technology, various digital display screens have emerged, including LED, LCD, DLP, etc. There are various control systems for various digital large screens, in...[Details]
introduction
With the rapid development of my country's aviation industry, various new aircraft and control equipment have been successfully developed. Some previous measurement and control eq...[Details]
Lithium-ion batteries have a high energy-to-weight and energy-to-volume ratio, no memory effect, can be recharged many times, have a long service life, and are becoming increasingly cheaper. A good...[Details]
Among the many candidate standards for China's mobile TV, the CMMB standard proposed by the Broadcasting Science Research Institute of the State Administration of Radio, Film and Television is aime...[Details]
Introduction
Wireless operators are driving demand for broadband and data rates by offering enhanced data services to increase average revenue per user (ARPU). The need to provide users with ...[Details]
Introduction
The home ECG and blood pressure monitoring system consists of a data acquisition and recording device and a host computer electronic medical record management system. Therefor...[Details]
introduction
With the increasing popularity of Internet applications, the degree of information sharing is constantly improving. The digitization and networking of embedded devices has b...[Details]
The microwave multifunctional therapeutic device uses microwave radiation for heating treatment, which can achieve the effects of sterilization and blood circulation. Using microwaves to directly c...[Details]
Focus shift problem
Visible light and infrared light have different wavelengths, so the imaging focus is not on the same plane, which results in a clear image under visible light condition...[Details]
In the past one or two years, driven by Apple's iPhone, the smartphone market has expanded rapidly. An important feature of portable products such as smartphones is that they have more and more fun...[Details]
This design uses TI's DaVinci series chips as the hardware platform, combined with the embedded Linux operating system, to implement a video server based on TMS320DM355. This article explains the s...[Details]
As process nodes and die sizes continue to shrink, the number of consumer electronic products using flip-chip packaged IC devices is increasing. However, flip-chip packaging manufacturing rules hav...[Details]