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书籍 ESD - Physics and Devices
Electrostatic discharge (ESD) phenomena have been known to mankind since Thales of
Miletus in approximately 600 B.C.E. noticed the attraction of strands of hay to amber.
Two thousand six hundred years have passed and the quest to obtain a better under-
standing of electrostatics and ESD phenomenon c ...
书籍 Digital+Home
It has been said that the move from narrowband to broadband access is the second
revolution for the Internet — ‘broadband is more bandwidth than you can use’.
Once users have experienced broadband access there is no turning back. A whole
new world of applications and services becomes possible. No ...
书籍 RFID+and+RFID-Enabled+Sensors
adio Frequency Identification (RFID) is a rapidly developing automatic wireless data-collection
technology with a long history.The first multi-bit functional passive RFID systems,with a range of
several meters, appeared in the early 1970s, and continued to evolve through the 1980s. Recently,
RFID ha ...
技术资料 时钟芯片
The PCA2129T is a CMOS1 Real Time Clock (RTC) and calendar with an integrated
Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz
crystal optimized for very high accuracy and very low power consumption. The PCA2129T
has a selectable I2C-bus or SPI-bus, a backup battery s ...
技术资料 电动汽车测试台架控制系统设计
设计一种以单片机为核心的电动汽车测试台架控制系统,用于对电动机等电动汽车关键零部件的性能测试。该系统主要包括主控板和按键板,主控板有232通讯电路、485通讯电路、CAN通讯电路、AD采集电路、继电器控制电路、数据存储电路、实时时钟电路、单片机及其周围电路;按键板有按键输入及按键指示灯控制电路。使用旋转编码器来调 ...
单片机编程 PCF8578 LCD图形点阵液晶驱动器芯片简介及封装库
The PCF8578 is a low power CMOS1 LCD row and column driver, designed to drive dotmatrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The device has40 outputs, of which 24 are programmable and configurable for the following ratios ofrows/columns: 32¤8, 24¤16, 16¤24 or 8¤32. The ...
技术资料 基于单片机的光电传感转速测量系统的设计
针对在工程实践中很多场合都需要对转速这一参数进行精准测量的目的,采用以STC89C52芯片为核心,结合转动系统、光电传感器、显示模块等构成光电传感器转速测量系统,实现对电机转速的测量。通过测试表明该系统具有结构简单、所耗成本低,测量精度高、稳定可靠等优点,具有广阔的应用前景。For the purpose of accurately measuri ...
模拟电子 传感器信号调节 - 用于信号调节的ADC
The trend in ADCs and DACs is toward higher speeds and higher resolutions atreduced power levels. Modern data converters generally operate on ±5V (dualsupply) or +5V (single supply). In fact, many new converters operate on a single +3Vsupply. This trend has created a number of design and ap ...
电源技术 电源调整与虚拟地
Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signalto match the op amp's "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweetspot. Typically, the sweet spot occurs near the center between the ...
电源技术 LTM4600 DCDC微型模块热性能
 
The LTM4600 DC/DC μModule regulator is a complete highpower density stepdown regulator for 10A continuous (14Apeak) loads. The device has two voltage options: 20VINmaximum for the LTM4600EV and 28VIN maximum for theLTM4600HVEV each housed in a small 15mm ¥ 15mm ¥2.8mm LGA surfa ...