《国际电子商情》数字版2010年2月刊 - (Page 30)

封面故事 LED照明 LED照明需要精确的功率和热管理系统 » 上接28页 LED驱动装置容易因直受损或毁坏。带电端口也容满足2类功率源安全标准例中，R1是与保护电路组合流电压和极性错误而受损。易因过压瞬态受损，包括ESD 在照明系统中采用2类功率使用的镇流电阻器。输出也会因有害短路而脉冲。源可能成为降低成本、提高灵活性的重要因素之一。固有型限功率源(一台变压器、电源或电池)可以包含保护器件，只要不依靠它们限制2类功率源的输出。非固有型限功率源，按照定义，具有一个离散保护器件，当电流和能量输出达到预定值时它会自动中断输出。各种电路保护器件都有助于提供LED照明应用2类功率源的安全操作。以一种协同保护策略的工作原理为例，它在交流输入上采用了一个MOV，在输出电路分支上采用了一个PolySwitch 器件，可以帮助厂家满足UL 1310第35.1小节针对开关和控制装置的过载试验要求。供稿：泰科电子 Junior ad 157mm x 220mm 点击查看全文相关阅读 • 用高亮发光二极管设计照明系统 • 电力载波应与LED智能化照明结合发展为妙 • 到底是采用恒压电源还是采用恒流电源给LED 供电? • 泰科全新LED连接器具备线对板功能国际电子商情 | 2010年2月 | www.esmchina.com http://www.burnon.com http://www.esmchina.com/ART_8800104948_1200_0_3504_0_ee56ec8c.HTM http://forum.esm-cn.com/BLOG_ARTICLE_1258.HTM http://forum.esm-cn.com/BLOG_ARTICLE_1161.HTM http://forum.esm-cn.com/BLOG_ARTICLE_1016.HTM http://www.esmchina.com/ART_8800101506_1500_2701_3701_0_934949c5.HTM http://www.esmchina.com

Table of Contents for the Digital Edition of 《国际电子商情》数字版2010年2月刊

STC MCU Co Ltd
Digi-Key Corporation
STC MCU Co Ltd
STC MCU Co Ltd
STC MCU Co Ltd
Texas Instruments HK Ltd
Zhejiang Jiakang Electronic Co Ltd
Micrel Semiconductor
Advanced MP Technology
Analog Devices
Mouser Electronics
SinoHub Inc
Hong Kong Baite (Group) Electronic Co Ltd
Shenzhen Changyuntong Design Co Ltd
Shenzhen Changyuntong Design Co Ltd
Shanghai E-Shine Digital Technology Co Ltd
Burnon International Limited
Silicon Laboratories
Burnon International Limited
ZLG-MCU Development Co Ltd
Shenzhen Hi-Hone Electronics Co Ltd
Jiangsu Skysoon Communication Co Ltd
Shenzhen Secom Telecom Co Ltd
National Semiconductor Hong Kong Ltd
Conquer Electronics Co Ltd
Chitron Electronics Co Ltd
NEC Electronics Hong Kong Ltd
Wuhan P&S Information Technology Co Ltd
Excel Cell Electronic Co Ltd
SyncMOS Technologies Inc
Techtronics Co Ltd
China Electronics Appliance Shenzhen Co Ltd
Keystone Electronics Corp
BCD Semiconductor Manufacturing Limited
Qualtek Electronics Ltd
Fuhua Electronic (HK) Co Ltd
Fuzetec Technology Co Ltd
OTAX
Xiamen Letdo Electron Co Ltd
Xiamen Ningly Electronics Co Ltd
Xiamen Sino Faith Electronic Technology Co Ltd
Eyang Technology Development Co Ltd
Xiamen Zettler Electronics Co Ltd
BYD Company Limited
Shenzhen Lanson Electroins Co Ltd
Yeebo LCD Ltd
Mueller Electric (Shanghai) Ltd
Beijing Rowa Beite Electronic Co Ltd
Future Technology Electronics Co Ltd
Shenzhen Shi Teruixiang Electronics Co Ltd
Shenzhen Wojin Technology Co Ltd
Artland Technology Ltd
Powertronics Co Ltd
Shenzhen Runsheng Electronics Co Ltd
Protronic Asia Limited
Walter Electronic Co Ltd
EnEcomponents.com
Honghu City Languang Electronics Co Ltd
Wealth Metal Factory Ltd
Weltronics Imaging Technology Ltd
CviLux Corporation
Beijing New Chuang Si Fang Electronic Co Ltd
Jinan Weilida Polymer Materials Co Ltd
Shenzhen Micro Commercial Components Co Ltd
Trantek Electronics Co Ltd
Wanco Electronics (HK) Ltd
My Group (Asia) Limited
Sino-Tech International Holdings Ltd
International Rectifier

《国际电子商情》数字版2010年2月刊