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    <h3>电子元器件</h3><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　电子元器件是</SPAN>元件<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">和</SPAN>器件<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的总称。电子元件：指在工厂生产加工时不改变分子成分 的成品。如</SPAN>电阻器<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、</SPAN>电容器<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、</SPAN>电感器<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">。因为它本身不产生电子，它对电压、电流无控制和变换作用，所以又称无源器件。电子器件：指在工厂生产加工时改变了</SPAN>分子<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">结构的成品。例如</SPAN>晶体管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、</SPAN>电子管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、集成</SPAN>电路<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">。因为它本身能产生电子，对电压、</SPAN>电流<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">有控制、变换作用（放大、</SPAN>开关<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、整流、检波、振荡和调制等），所以又称有源器件。按分类标准，电子器件可分为12个大类，可归纳为真空电子器件和</SPAN>半导体器件<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">两大块。电子元器件发展史其实就是一部浓缩的电子发展史。电子技术是十九世纪末、二十世纪初开始发展起来的新兴技术，二十世纪发展最迅速，应用最广泛，成为近代科学技术发展的一个重要标志。</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　电子元器件行业主要由电子元件业、半导体分立器件和集成电路业等部分组成。</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　电子元器件包括：电阻、电容器、电位器、电子管、散热器、机电元件、连接器、半导体分立器件、电声器件、激光器件、电子显示器件、光电器件、传感器、电源、开关、微特电机、电子变压器、继电器、印制电路板、集成电路、各类电路、压电、晶体、石英、陶瓷磁性材料、印刷电路用基材基板、电子功能工艺专用材料、电子胶（带）制品、电子化学材料及部品等。</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　电子元器件在质量方面现在国际上面有</SPAN>中国<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的CQC认证，</SPAN>美国<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的UL和CUL认证，</SPAN>德国<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的VDE和TUV以及欧盟的CE等国内外认证，来保证元器件的合格。</SPAN><h3>电阻</h3><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　</SPAN>电阻<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">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:</SPAN>分流<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、限流、</SPAN>分压<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、偏置等.</SPAN></SPAN><h3>晶体二极管</h3><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　</SPAN>晶体二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">在电路中常用“D”加数字表示,如: D5表示编号为5的二极管.</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　作用:二极管的主要特性是</SPAN>单向导电性<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">,也就是在</SPAN>正向电压<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的作用下,导通电阻很小;而在</SPAN>反向电压<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">作用下导通电阻极大或无穷大.正</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　因为二极管具有上述特性,无绳电话机中常把它用在整流、隔离、稳压、极性保护、编码控制、调频调制和静噪等电路中.电话机里使用的晶</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　体二极管按作用可分为:整流二极管(如1N4004)、</SPAN>隔离二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">(如1N4148)、</SPAN>肖特基二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">(如BAT85)、</SPAN>发光二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、稳压二极管等.</SPAN><h3>晶体二极管</h3><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　</SPAN>晶体二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">在电路中常用“D”加数字表示,如: D5表示编号为5的二极管.</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　作用:二极管的主要特性是</SPAN>单向导电性<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">,也就是在</SPAN>正向电压<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的作用下,导通电阻很小;而在</SPAN>反向电压<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">作用下导通电阻极大或无穷大.正</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　因为二极管具有上述特性,无绳电话机中常把它用在整流、隔离、稳压、极性保护、编码控制、调频调制和静噪等电路中.电话机里使用的晶</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　体二极管按作用可分为:整流二极管(如1N4004)、</SPAN>隔离二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">(如1N4148)、</SPAN>肖特基二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">(如BAT85)、</SPAN>发光二极管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、稳压二极管等.</SPAN><h3>组合电路</h3><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　集成电路是一种采用特殊工艺，将晶体管、电阻、电容等元件集成在硅基片上而形成的具有一定功能的器件，英文为缩写为IC，也俗称</SPAN>芯片<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">。</SPAN> <DIV class=spctrl style="WORD-SPACING: 0px; FONT: 12px/14px arial, 宋体, sans-serif; OVERFLOW: hidden; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; HEIGHT: 14px; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"></DIV><SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">　　</SPAN>模拟集成电路<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">主要是指由</SPAN>电容<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、</SPAN>电阻<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、</SPAN>晶体管<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">等元件组成的</SPAN>模拟电路<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">集成在一起用来处理</SPAN>模拟信号<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的</SPAN>集成电路<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">。有许多的模拟集成电路，如集成运算</SPAN>放大器<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、比较器、对数和指数放大器、模拟乘(除)法器、锁相环、</SPAN>电源管理芯片<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">等。模拟集成电路的主要构成电路有：放大器、</SPAN>滤波器<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">、反馈电路、基准源电路、开关电容电路等。模拟</SPAN>集成电路设计<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">主要是通过有经验的</SPAN>设计师<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">进行手动的电路调试，模拟而得到，与此相对应的</SPAN>数字集成电路设计<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">大部分是通过使用硬件描述语言在EDA</SPAN>软件<SPAN style="DISPLAY: inline! important; FLOAT: none; WORD-SPACING: 0px; FONT: 14px/24px arial, 宋体, sans-serif; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px">的控制下自动的综合产生。</SPAN></SPAN>
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