电子元件厂商Logo标识(课堂PPT)
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电子厂商标志识别Intel 英特尔公司,CPU 生产商三巨头的老大。
Linear Technology 美国 LTC 公司,国际著名的高精度模拟电路制造商之一,生产线性电路、 混合信号电路、各类数据转换及放大处理电路。
Maxim Integrated Products MAX 系列产品,从模拟电路到数字电路。
Mitel Semiconductor Inc. 在通信领域中的半导体器件及 OEM 电话机器件,久享盛名。
Motorola Semiconductor Products Inc.摩托罗拉半导体,以数字逻辑器件、模拟和接口器件、 通信及功率器件、各类微处理器、存储器电路为主。
National Semiconductor Corporation 美国国家半导体公司,世界老牌半导体厂商之一。
Philips 欧洲老牌电子厂商,世界级电子大公司之一,半导体产品涉及的领域较广.TEXAS INSTRUMENTS(TI)(德国德克萨斯仪器公司)Siemens 西门子公司具有 150 年历史,欧洲老牌电子厂商,世界级电子大公司之一。
Actel Corporation 以生产高速存储器、可编程门阵列-FPGA 电路为主。
Microchip 生产各类存储器、8 位 PIC 产品、智能卡芯片等。
Mitsubishi 三菱半导体近年来在 RF 及 TFT-LCD 产业上发展很快。
NEC 从分立器件到各个领域的电路,NEC 半导体算是门类齐全的厂商之一。
OPTi,Inc. 桌面 PC 及笔记本 PC 配套电路制造厂商。
QuestLink Technology's 半导体器件经销商。
S3 著名的显示芯片及显示卡制造厂商。
Samsung 三星电子的产品种类已是数不胜数,计算机、通信、消费类产品份额较大。
SanDisk Corporation 特色产品有 PCMCIA 存储器等。
SGS-THOMSON 意法半导体公司,国际著名半导体公司之一。
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SEMICONDUCTORWSMCWPIWOLFSON SEMICONDUCTORSWINBOND ELECTRONICS CORP.WESTERN DIGITAL CORP.WESTERN DIGITAL CORP.WESTERN DESIGN CENTERWELTREND(台湾做模拟芯片的)伟诠电子WEITEK(NOW ROCKWELL)WAFERSCALE INTEGRATIONXILINXXICORXICORXEMICSYAMAHA雅玛哈YAMAHA雅玛哈ZUCOTTO WIRELESSZORAN CORPORATIONZILOG(做数字电源用芯片)ZILOGZILOGZILOGZILOG。
常用元器件的识别一、电阻电阻在电路中用“R”加数字表示,如:R1表示编号为1的电阻.电阻在电路中的主要作用为分流、限流、分压、偏置等。
1、参数识别:电阻的单位为欧姆(Ω),倍率单位有:千欧(KΩ),兆欧(MΩ)等.换算方法是:1兆欧=1000千欧=1000000欧电阻的参数标注方法有3种,即直标法、色标法和数标法。
a、数标法主要用于贴片等小体积的电路,如:472 表示47×100Ω(即4.7K);104则表示100Kb、色环标注法使用最多,现举例如下:四色环电阻五色环电阻(精密电阻)2、电阻的色标位置和倍率关系如下表所示:颜色有效数字倍率允许偏差(%)银色/ x0。
01 ±10金色/ x0。
1 ±5黑色0 +0 /棕色 1 x10 ±1红色 2 x100 ±2橙色 3 x1000 /黄色 4 x10000 /绿色 5 x100000 ±0。
5蓝色 6 x1000000 ±0。
2紫色7 x10000000 ±0。
1灰色8 x100000000 /白色9 x1000000000 /二、电容1、电容在电路中一般用“C”加数字表示(如C13表示编号为13的电容)。
电容是由两片金属膜紧靠,中间用绝缘材料隔开而组成的元件.电容的特性主要是隔直流通交流。
电容容量的大小就是表示能贮存电能的大小,电容对交流信号的阻碍作用称为容抗,它与交流信号的频率和电容量有关。
容抗XC=1/2πf c (f表示交流信号的频率,C表示电容容量)电话机中常用电容的种类有电解电容、瓷片电容、贴片电容、独石电容、钽电容和涤纶电容等.2、识别方法:电容的识别方法与电阻的识别方法基本相同,分直标法、色标法和数标法3 种。
电容的基本单位用法拉(F)表示,其它单位还有:毫法(mF)、微法(uF)、纳法(nF)、皮法(pF)。
其中:1法拉=103毫法=106微法=109纳法=1012皮法容量大的电容其容量值在电容上直接标明,如10 uF/16V容量小的电容其容量值在电容上用字母表示或数字表示字母表示法:1m=1000 uF 1P2=1。