There is a device on the board. I don't know what it is. It says BU257. It is a 16-pin 8*2 chip. I googled it but still couldn't find any useful information. If anyone knows, please tell me. Thanks....
Dear experts, please help me choose a voltage comparator. Its function is to detect that the voltage at the capacitor end is equal to the reference voltage of the comparator, so that the trigger circu...
After posting 500 boards and shipping over 200 devices recently, 6 boards had to be repaired with 0.1uf capacitor failures (in different locations, both in the reset circuit and the filter circuit).
T...
1 Overview
Drugs are like a "double-edged sword". They can treat diseases but can also cause serious adverse consequences. The dual nature of drugs depends on whether they are used rationally....[Details]
The circuit shown in the figure is a three-digit tachometer used to measure low frequency signals with a repetitive time interval of 0.235 to 15 seconds. The tachometer has a speed range of 4 to 255 r...[Details]
1 Overview
The BP01 pressure sensor is specially designed for monitoring blood pressure and is mainly used in portable electronic sphygmomanometers. It uses a precision thick-film ceramic chip and...[Details]
Introduction: Design of automated test systems
Challenges
To ensure the quality and reliability of products delivered to customers, test managers and engineers use automated test system...[Details]
In the development of high-stability lasers, real-time monitoring of the working state of the laser is an issue that needs to be focused on. This system realizes the high-stability laser temperatur...[Details]
Obtaining real-time and reliable traffic information has always been a bottleneck problem in the development of intelligent transportation systems. The establishment of an intelligent transportatio...[Details]
Adding "intelligence" to measurement systems is becoming more common as 8-bit microcontrollers are inexpensive, widely available, and can be programmed using today's common high-level languages, su...[Details]
In electronic measurement technology, frequency measurement is one of the most basic measurements. The commonly used frequency measurement method and period measurement method have great limitation...[Details]
introduction
Taking care of babies is very tiring because they wake up and sleep frequently, and activities such as feeding and changing clothes will take up a lot of adults' time and energy. ...[Details]
Preface
In recent years, many compact portable electronic products have been developed, such as mobile phones, digital cameras, MP3, MP4, PDA, GPS and DVD, etc. They are not only small in size...[Details]
0Introduction
As a service robot in the field of medical care, the application of smart wheelchairs makes extensive use of mobile robot technology. The key technologies involved in the researc...[Details]
In the issue of ensuring the safety of drivers and pedestrians, the proportion of electronic technology has increased. According to the survey, 80% to 90% of traffic accidents are caused by driver...[Details]
Global IP Solutions (GIPS), a leading provider of high-quality IP multimedia processing solutions, announced that GIPS has enabled Voice over Internet Protocol (VoIP) capabilities for Apple's iPhon...[Details]
At present, TPMS (tire pressure monitoring system) is mainly divided into two types, one is indirect type and the other is direct type. The direct TPMS system has been affected by its poor alarm ac...[Details]
The discipline of HHCE (Home Health Care Engineering) is gradually entering people's lives as people pay more attention to health and telemedicine develops. It advocates the concept of "seeking m...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
