?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 开关电源中电容快速选型的技?/title> <meta name="keywords" content="开关电源中电容快速选型的技? /> <meta name="description" content="开关电源中电容快速选型的技? /> <link rel="stylesheet" type="text/css" href="/css/resetcommonindex.css" /> <script type="text/javascript" src="/js/jquery.min.js"></script> <script type="text/javascript" src="/js/js.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><dl id="dlhtj"></dl><listing id="dlhtj"><cite id="dlhtj"><ruby id="dlhtj"><span id="dlhtj"></span></ruby></cite></listing><address id="dlhtj"><var id="dlhtj"></var></address><address id="dlhtj"></address><span id="dlhtj"></span><dl id="dlhtj"></dl><dl id="dlhtj"><progress id="dlhtj"><del id="dlhtj"><noframes id="dlhtj"></noframes></del></progress></dl><video id="dlhtj"><listing id="dlhtj"><ruby id="dlhtj"><th id="dlhtj"></th></ruby></listing></video><ins id="dlhtj"></ins><address id="dlhtj"><ins id="dlhtj"></ins></address><span id="dlhtj"></span><address id="dlhtj"><cite id="dlhtj"><video id="dlhtj"><menuitem id="dlhtj"></menuitem></video></cite></address><strike id="dlhtj"></strike><var id="dlhtj"><strike id="dlhtj"></strike></var><ins id="dlhtj"><video id="dlhtj"><thead id="dlhtj"><ruby id="dlhtj"></ruby></thead></video></ins><th id="dlhtj"><cite id="dlhtj"></cite></th><del id="dlhtj"><span id="dlhtj"></span></del><ruby id="dlhtj"><address id="dlhtj"><ins id="dlhtj"><span id="dlhtj"></span></ins></address></ruby><video id="dlhtj"><menuitem id="dlhtj"><dl id="dlhtj"><listing id="dlhtj"></listing></dl></menuitem></video><thead id="dlhtj"><i id="dlhtj"></i></thead><th id="dlhtj"><cite id="dlhtj"></cite></th><video id="dlhtj"></video><del id="dlhtj"><noframes id="dlhtj"></noframes></del><listing id="dlhtj"><i id="dlhtj"></i></listing><ruby id="dlhtj"></ruby><strike id="dlhtj"><listing id="dlhtj"></listing></strike><dl id="dlhtj"><address id="dlhtj"><del id="dlhtj"><span id="dlhtj"></span></del></address></dl><var id="dlhtj"><dl id="dlhtj"></dl></var><dl id="dlhtj"></dl><ins id="dlhtj"></ins><span id="dlhtj"></span><var id="dlhtj"><strike id="dlhtj"></strike></var><noframes id="dlhtj"><menuitem id="dlhtj"></menuitem></noframes><ruby id="dlhtj"><th id="dlhtj"><ins id="dlhtj"><video id="dlhtj"></video></ins></th></ruby><th id="dlhtj"></th><var id="dlhtj"><strike id="dlhtj"></strike></var><thead id="dlhtj"><ruby id="dlhtj"></ruby></thead><ins id="dlhtj"><video id="dlhtj"><menuitem id="dlhtj"><ruby id="dlhtj"></ruby></menuitem></video></ins><var id="dlhtj"><dl id="dlhtj"><progress id="dlhtj"><i id="dlhtj"></i></progress></dl></var><strike id="dlhtj"><listing id="dlhtj"><i id="dlhtj"><th id="dlhtj"></th></i></listing></strike><th id="dlhtj"></th><address id="dlhtj"></address><progress id="dlhtj"><del id="dlhtj"></del></progress><del id="dlhtj"><noframes id="dlhtj"><var id="dlhtj"><strike id="dlhtj"></strike></var></noframes></del><progress id="dlhtj"><del id="dlhtj"><noframes id="dlhtj"><var id="dlhtj"></var></noframes></del></progress><cite id="dlhtj"><video id="dlhtj"><thead id="dlhtj"><i id="dlhtj"></i></thead></video></cite><dl id="dlhtj"><progress id="dlhtj"><del id="dlhtj"><th id="dlhtj"></th></del></progress></dl><ruby id="dlhtj"></ruby><progress id="dlhtj"><ins id="dlhtj"></ins></progress><var id="dlhtj"><strike id="dlhtj"></strike></var> <progress id="dlhtj"></progress><span id="dlhtj"><menuitem id="dlhtj"></menuitem></span><del id="dlhtj"><span id="dlhtj"><var id="dlhtj"><strike id="dlhtj"></strike></var></span></del><cite id="dlhtj"><video id="dlhtj"></video></cite><menuitem id="dlhtj"><dl id="dlhtj"></dl></menuitem><noframes id="dlhtj"><var id="dlhtj"></var></noframes><progress id="dlhtj"><i id="dlhtj"></i></progress><menuitem id="dlhtj"></menuitem><thead id="dlhtj"></thead><del id="dlhtj"></del><address id="dlhtj"><ins id="dlhtj"></ins></address><strike id="dlhtj"><listing id="dlhtj"><i id="dlhtj"><th id="dlhtj"></th></i></listing></strike><i id="dlhtj"><th id="dlhtj"></th></i><ruby id="dlhtj"><address id="dlhtj"></address></ruby><strike id="dlhtj"><listing id="dlhtj"></listing></strike><menuitem id="dlhtj"><dl id="dlhtj"></dl></menuitem><address id="dlhtj"></address><ruby id="dlhtj"><address id="dlhtj"><ins id="dlhtj"><video id="dlhtj"></video></ins></address></ruby><video id="dlhtj"><listing id="dlhtj"><ruby id="dlhtj"><th id="dlhtj"></th></ruby></listing></video><listing id="dlhtj"><i id="dlhtj"></i></listing><thead id="dlhtj"><ruby id="dlhtj"><address id="dlhtj"><cite id="dlhtj"></cite></address></ruby></thead><progress id="dlhtj"></progress><cite id="dlhtj"><video id="dlhtj"><listing id="dlhtj"><ruby id="dlhtj"></ruby></listing></video></cite><del id="dlhtj"><span id="dlhtj"><var id="dlhtj"><dl id="dlhtj"></dl></var></span></del><cite id="dlhtj"><video id="dlhtj"><menuitem id="dlhtj"><ruby id="dlhtj"></ruby></menuitem></video></cite><i id="dlhtj"><th id="dlhtj"></th></i><ins id="dlhtj"><video id="dlhtj"></video></ins><listing id="dlhtj"><i id="dlhtj"></i></listing><th id="dlhtj"><cite id="dlhtj"><video id="dlhtj"><menuitem id="dlhtj"></menuitem></video></cite></th><progress id="dlhtj"></progress><listing id="dlhtj"><i id="dlhtj"><th id="dlhtj"><cite id="dlhtj"></cite></th></i></listing><address id="dlhtj"><i id="dlhtj"><address id="dlhtj"><ins id="dlhtj"></ins></address></i></address><listing id="dlhtj"><i id="dlhtj"></i></listing><th id="dlhtj"></th><span id="dlhtj"></span><del id="dlhtj"></del><th id="dlhtj"></th><var id="dlhtj"><dl id="dlhtj"></dl></var><listing id="dlhtj"><i id="dlhtj"></i></listing><th id="dlhtj"><cite id="dlhtj"></cite></th><span id="dlhtj"><thead id="dlhtj"><ruby id="dlhtj"><address id="dlhtj"></address></ruby></thead></span><video id="dlhtj"><thead id="dlhtj"><ruby id="dlhtj"><address id="dlhtj"></address></ruby></thead></video><span id="dlhtj"></span><dl id="dlhtj"><progress id="dlhtj"><i id="dlhtj"><noframes id="dlhtj"></noframes></i></progress></dl><address id="dlhtj"><del id="dlhtj"></del></address><dl id="dlhtj"><progress id="dlhtj"></progress></dl><dl id="dlhtj"><progress id="dlhtj"></progress></dl><ins id="dlhtj"><span id="dlhtj"><menuitem id="dlhtj"><ruby id="dlhtj"></ruby></menuitem></span></ins><dl id="dlhtj"><progress id="dlhtj"></progress></dl><progress id="dlhtj"><del id="dlhtj"><noframes id="dlhtj"><var id="dlhtj"></var></noframes></del></progress> <cite id="dlhtj"><video id="dlhtj"></video></cite><var id="dlhtj"><dl id="dlhtj"><progress id="dlhtj"><del id="dlhtj"></del></progress></dl></var><span id="dlhtj"></span><address id="dlhtj"><del id="dlhtj"><span id="dlhtj"><menuitem id="dlhtj"></menuitem></span></del></address><del id="dlhtj"><noframes id="dlhtj"><var id="dlhtj"><strike id="dlhtj"></strike></var></noframes></del><i id="dlhtj"><th id="dlhtj"></th></i><address id="dlhtj"><ins id="dlhtj"></ins></address><thead id="dlhtj"><ruby id="dlhtj"></ruby></thead><ins id="dlhtj"></ins><thead id="dlhtj"></thead><del id="dlhtj"><noframes id="dlhtj"><var id="dlhtj"><strike id="dlhtj"></strike></var></noframes></del><progress id="dlhtj"><del id="dlhtj"></del></progress><del id="dlhtj"><span id="dlhtj"></span></del><strike id="dlhtj"><listing id="dlhtj"></listing></strike><progress id="dlhtj"></progress><progress id="dlhtj"><del id="dlhtj"></del></progress><th id="dlhtj"><cite id="dlhtj"></cite></th><listing id="dlhtj"><i id="dlhtj"><th id="dlhtj"><cite id="dlhtj"></cite></th></i></listing><noframes id="dlhtj"><var id="dlhtj"></var></noframes><i id="dlhtj"><noframes id="dlhtj"><cite id="dlhtj"><strike id="dlhtj"></strike></cite></noframes></i><del id="dlhtj"><th id="dlhtj"></th></del><var id="dlhtj"><strike id="dlhtj"><listing id="dlhtj"><i id="dlhtj"></i></listing></strike></var><menuitem id="dlhtj"><dl id="dlhtj"><progress id="dlhtj"><ins id="dlhtj"></ins></progress></dl></menuitem><cite id="dlhtj"><video id="dlhtj"></video></cite><noframes id="dlhtj"></noframes><ruby id="dlhtj"><address id="dlhtj"><del id="dlhtj"><span id="dlhtj"></span></del></address></ruby><del id="dlhtj"></del><strike id="dlhtj"><listing id="dlhtj"><i id="dlhtj"><th id="dlhtj"></th></i></listing></strike><i id="dlhtj"><th id="dlhtj"><cite id="dlhtj"><video id="dlhtj"></video></cite></th></i><menuitem id="dlhtj"><dl id="dlhtj"></dl></menuitem><listing id="dlhtj"><i id="dlhtj"></i></listing><address id="dlhtj"></address><video id="dlhtj"></video><span id="dlhtj"><menuitem id="dlhtj"></menuitem></span><cite id="dlhtj"><video id="dlhtj"></video></cite><address id="dlhtj"><cite id="dlhtj"><span id="dlhtj"><thead id="dlhtj"></thead></span></cite></address><strike id="dlhtj"><listing id="dlhtj"></listing></strike><ruby id="dlhtj"><address id="dlhtj"></address></ruby><var id="dlhtj"></var><progress id="dlhtj"><del id="dlhtj"><noframes id="dlhtj"><cite id="dlhtj"></cite></noframes></del></progress><video id="dlhtj"><thead id="dlhtj"></thead></video><ins id="dlhtj"><span id="dlhtj"></span></ins><ruby id="dlhtj"><progress id="dlhtj"><ins id="dlhtj"><noframes id="dlhtj"></noframes></ins></progress></ruby><address id="dlhtj"></address><strike id="dlhtj"></strike><video id="dlhtj"><thead id="dlhtj"></thead></video><th id="dlhtj"></th><th id="dlhtj"></th><strike id="dlhtj"></strike><strike id="dlhtj"><listing id="dlhtj"><i id="dlhtj"><th id="dlhtj"></th></i></listing></strike></div> <div class="header"> <div class="h_top fn"> <p class="fr"><a href="/contact.shtml">联系我们</a>|<a href="/message.shtml">在线留言</a>|<a href="/map.shtml">网站地图</a></p><span>欢迎光临</span>广气电气(上海)有限公司! </div> <div class="h_con fn"> <p style="float: left;"><img alt="广气电气(上海)有限公司" src="/UpLoadFile/image/20150616/6357007197163254805131425.png" title="广气电气(上海)有限公司" height="100"/><img src="/UpLoadFile/image/20190518/6369373876792047676344107.png" title="未标?6.png" alt="未标?6.png"/><span style="color: rgb(0, 112, 192); font-size: 36px;"><strong><span style="color: rgb(0, 112, 192);"><br/></span></strong></span></p> <div class="h_pho fr"> <div class="h_pho fr"><a href="/contact.shtml"><img src="/images/zx.gif"/></a><span>全国服务热线</span><em>021-59585587</em></div> </div> </div> <div class="menu"> <ul> <li><a href="/">首页</a></li> <li><a href="/about.shtml">关于我们</a> <div class="nav_down"> <a href="/about.shtml" title="公司介绍">公司介绍</a> <a href="/honor.shtml" title="营业执照">营业执照</a> <a href="/culture.shtml" title="企业文化">企业文化</a> </div> </li> <li><a href="/pro/">产品中心</a> <div class="nav_down"> <a href="/bianyaqi/" title="变压?>变压?/a> <a href="/wenyaqi/" title="稳压?>稳压?/a> <a href="/tiaoyaqi/" title="调压?>调压?/a> <a href="/a/" title="直流稳压?>直流稳压?/a> <a href="/kaiguan/" title="开关电?>开关电?/a> <a href="/b/" title="启动?>启动?/a> <a href="/c/" title="电抗?>电抗?/a> </div> </li> <li class="active"><a href="/xinwen/">新闻中心</a> <div class="nav_down"> <a href="/72dc-8c/" title="行业动?>行业动?/a> <a href="/CompanyNews/" title="公司新闻">公司新闻</a> </div> </li> <li><a href="/anli/">成功案例</a></li> <li><a href="/partner.shtml">合作伙伴</a></li> <li><a href="/job.shtml">招贤纳士</a></li> <li><a href="/problem/">常见问题</a></li> <li><a href="/contact.shtml">联系我们</a> <div class="nav_down"> <a href="/contact.shtml" title="联系方式">联系方式</a> <a href="/message.shtml" title="在线留言">在线留言</a> </div> </li> </ul> </div> <div class="search"> <div class="content fn"> <p class="key_words fl"> <b>热门关键词:</b><a href="/pro/">进出口设备专用变压器 </a><a href="/pro/">机床专用稳压?</a><a href="/pro/">电机调试用调压器 </a><a href="/pro/">进口伺服电机专用变压?</a><a href="/pro/">发电机专用变压器</a> </p> <p class="right_sear fr"> <input type="text" class="s_input" value="请输入产品关键字" onfocus="if (value =='请输入产品关键字'){value ='';this.style.color='#000'}" onblur="if (value ==''){value='请输入产品关键字';this.style.color='#aaa'}" id="seachkeywords" /> <input class="s_btn" type="button" /> </p> </div> </div> </div> <div class="ny_banner"> <img src="/UpLoadFile/20150119/7930d833-18fa-4b73-9fb2-ddced331c483.jpg" alt="新闻活动Banner" /> </div> <div class="content"> <div class="ny_left"> <div class="left"> <p class="left_top">新闻中心</p> <ul class="nr"> <li id="news9"><a href="/72dc-8c/" title="行业动?>行业动?/a></li> <li id="news8"><a href="/CompanyNews/" title="公司新闻">公司新闻</a></li> </ul> </div> <div class="clear"></div> <div class="l_news"> <p class="left_top"><a href="/xinwen/">新闻中心</a></p> <ul class="l_new_u"> <li><a href="/72dc-8c/sdavgsbv4.shtml" title="开关电源中电容快速选型的技?>开关电源中电容快速选型的技?/a></li> <li><a href="/72dc-8c/78687.shtml" title="暴雨致变压器爆炸附近区域全部断电(?">暴雨致变压器爆炸附近区域全部断电(?</a></li> <li><a href="/CompanyNews/shdgcds.shtml" title="感应调压器的用处">感应调压器的用处</a></li> <li><a href="/CompanyNews/jhgfds41sa.shtml" title="变压器型号_ 变压器型号大全_怎样选择变压?>变压器型号_ 变压器型号大全_怎样选择变压?/a></li> <li><a href="/72dc-8c/dlbyqjcff.shtml" title=" 电力变压器检查方?> 电力变压器检查方?/a></li> <li><a href="/72dc-8c/byqzdcsyy.shtml" title="变压器振动的产生原因">变压器振动的产生原因</a></li> <li><a href="/72dc-8c/xwzxbyqgzyl777.shtml" title=" 变压器工作原?> 变压器工作原?/a></li> <li><a href="/72dc-8c/xwzxbyqqub888.shtml" title="变压器空载与负载的区?>变压器空载与负载的区?/a></li> </ul> </div> <div class="lxnr"> <p class="left_top"><a href="/contact.shtml">联系我们</a></p><div class="lxnrs"><a href="/contact.shtml"> <img src="/images/contact.jpg"/></a><p><em><span id="ctl00_lbl_concent"><strong><span style="white-space: normal;">广气电气(上海)有限公司</span></strong></span></em></p><p>电话?span id="ctl00_lbl_concent"><font style="FONT-SIZE: 14px"><font style="FONT-SIZE: 14px" color="#000000">021-59585587</font></font></span></p><p><span id="ctl00_lbl_concent">手机号码?font style="FONT-SIZE: 14px" color="#000000">13818323487</font></span></p><p><span id="ctl00_lbl_concent">??人:冷经?/span></p><p><span id="ctl00_lbl_concent">邮箱?a href="mailto:shgybyq@aliyun.com">shgybyq@aliyun.com</a></span><br/></p><p><span id="ctl00_lbl_concent">地址:上海市嘉定区嘉定工业园?/span></p></div> </div> </div> <div class="right"> <div class="plc"> <p> 当前位置? <a href="/" title="首页">首页</a>  »   <a href="/xinwen/" title="新闻中心">新闻中心</a>  »   <a href="/72dc-8c/" title="行业动?>行业动?/a>  »   开关电源中电容快速选型的技? </p> <h2>行业动?/h2> </div> <div class="righttop"></div> <div class="right_main"> <div class="newshow_top"> <h1>开关电源中电容快速选型的技?/h1> <p> 信息采集:广气电气(上海)有限公司 发布时间2018-06-05 浏览次数?script type="text/javascript">     var html = "";     $.ajax({     type: "POST",     url: "/AjaxFile/GetHits.ashx",     data: {     CallMethod: "GetInformationHits()",     ID: "209"     },     async: false,     success: function (data) {     html = data;     }     });     document.write(html); </script> </p> </div> <div class="newshow_txt"> <p> 电容是开关电源中的再普通不过的器件,它可以用来降低纹波噪声,可以用来提高电源的稳定性以及瞬态响应性,然而,电容的种类繁多,如何通过技巧快速进行选型,而产品可靠性又高,性能又稳定呢?/p><p> 1、电容种类的了解</p><p>  对电容种类的大致了解,在选择电容时有助于对电容种类的快速筛选?/p><p>  电容种类较多,如?所示,按封装分有贴片电容、插件电容,按介质分有陶瓷电容,钽电容,电解电容、云母电容、薄膜电容等,按结构形势分,有固定电容、半固定电容、可变电容?/p><p></p><p>电容种类的繁多,让人容易患选择综合症,但不用忧虑,在开关电源中,我们使用最多的就是陶瓷电容,电解电容和钽电容,了解了电容的种类接下来是了解电容的一些性能参数?/p><p>  2、电容关键参数的认识</p><p>  了解电容的内在关键参数,才能快速选型,可靠使用,所有的电容的关键参数都是一样的,包括电容容值、电容的耐压值、电容的ESR、电容容值精度、电容允许的工作温度范围?/p><p>  3、开关电源中电容的选型要了解电容本身特?/p><p>  在开关电源设计中,使用频率最高的电容是陶瓷电容、电解电容、钽电容,需要了解它们的特性差异才能快速的进行选择?/p><p>  陶瓷电容容值较小,高频特性好,工作温度范围较广,ESR较电解电容小,体积小,没有极性;</p><p>  电解电容容值可以做大,但工作温度范围较窄,ESR较大,有极性;</p><p>  钽电容ESR最小,容值可比陶瓷电容大一些,有极性,安规性能差,容易起火?/p><p>  了解了以上三种电容的特性,在使用它们的时候就可以游刃有余?/p><p>  4、开关电源中电容的选型还要了解使用环境</p><p>  电容的使用环境还分电路内部环境和电路外部环境,电路内部环境包括频率、电压值、电流值、电容在电路中的主要作用等;根据电路频率可以确定电容种类;根据电压值可以确定选型电容的耐压值;在电路中的主要作用可以用来参考选型电容的容值等?/p><p>  根据电路外部使用环境对电容进行选型,产品工作的环境温度,安规要求等,都可以用来缩小电容选择范围?/p><p>  5、开关电源中部分电路电容选型举例</p><p>  ?)吸收电路的电容选型,如下图2所示,在开关电源中,在MOS管或二极管上并联电容吸收尖峰是很常见的电路,那么这颗电容该如何去选择呢?首先,考虑电路环境,即电容上可能承受的最大电压应力,可以确定电容的耐压值选;其次,作为吸收电路,容值不能太大,太大会影响整机效率,故容值一般使用PF级别电容,电容的高频特性要好,根据这些特点,选择陶瓷电容是最理想的;然而陶瓷电容还分NPO,COG材质,根据温度特性还分X5R、X7R等,无需愁,只要了解了电路环境对使用电容的精度要求及温度要求,这些都可迎刃而解,在这种吸收电路中,对电容精度要求不高,一般的COG材质的电容可以满足?/p><p></p><p>?)启动电路,以芯?843为例,用RC启动,C值一般用到uF级别的电容,且温度特性要好,要不然在温度变化时,容值不够,会启动不良,在此可以选择钽电容和陶瓷电容;但是,钽电容有一个问题就是不符合安规要求,如果要过安规认证,就只能选择陶瓷电容?/p><p><img alt="" src="/UpLoadFile/image/20160325/6359452194034809275166983.png" style="border: 0px; width: 179px; height: 234px;"/><br/>?</p><p>  ?)滤波电路电容选择,根据电路中电容两端电压确定耐压值,如输出电?4V,就不能选择15V或是25V耐压值的电容,电路中最大电流可以用来确定容值,电流大需要得到更小纹波,就要选择大容量的电容,滤波电路中,电容值可以用纯陶瓷、纯电解电容,或是电解电容混合陶瓷电容一起使用?/p><p><img alt="" src="/UpLoadFile/image/20160325/6359452194037929273410320.png" style="border: 0px; width: 460px; height: 187px;"/></p><p>  ?</p><p>  6、汽车级电源使用电容选型举例</p><p>  汽车级电源电容选型就涉及到使用环境对电容的筛选,汽车级电源工作环境温度较一般的工业级电源要求高,工作温度要求达?25℃,所以电容选型是要选择温度特性好、耐高温、安规性能好的电容?/p><p>  电容的选用技巧无非就是了解常用的几种电容特性以及电容在电路中的应用环境、产品使用环境特性?/p><p><br/></p> </div> <div class="return"><a href="/xinwen/">? ?/a></div> <div class="pro_s"> <span><< 上一篇:<a href="/72dc-8c/78687.shtml" title="暴雨致变压器爆炸附近区域全部断电(?">暴雨致变压器爆炸附近区域全部断电(?</a></span> <span style="text-align: right;">下一?>>暂无下一?/span> </div> <p class="proshow_txt">相关新闻</p> <div class="newshow_b clearfix"> <ul> <li><a href="/72dc-8c/nuhui.shtml" title="消防互用途巡检柜与水泵启动柜的?>消防互用途巡检柜与水泵启动柜的?/a></li> <li><a href="/72dc-8c/、ouy.shtml" title="空调漏电原因有哪些?">空调漏电原因有哪些?</a></li> <li><a href="/72dc-8c/3333.shtml" title="隔离变压器的作用">隔离变压器的作用</a></li> <li><a href="/72dc-8c/kgdyzy.shtml" title="开关电源注意事项探?>开关电源注意事项探?/a></li> <li><a href="/72dc-8c/dywyqzdyym.shtml" title="电源稳压器真的有用吗 如何挑选电源稳压器">电源稳压器真的有用吗 如何挑选电源稳压器</a></li> <li><a href="/72dc-8c/wgdlby1602.shtml" title="我国电力变压器短路试验的发展状况">我国电力变压器短路试验的发展状况</a></li> <li><a href="/72dc-8c/sfwrf3.shtml" title="眉山电力解民?为万利村投放变压?>眉山电力解民?为万利村投放变压?/a></li> <li><a href="/72dc-8c/235.shtml" title="单、三相大功率柱式电动调压?>单、三相大功率柱式电动调压?/a></li> <li><a href="/72dc-8c/4897.shtml" title="直流稳压电源">直流稳压电源</a></li> <li><a href="/72dc-8c/3256.shtml" title="SBW三相全自动补偿式电力稳压?>SBW三相全自动补偿式电力稳压?/a></li> </ul> </div> </div> <div class="rightbot"></div> </div> </div> <div class="clear"></div> <div class="ft_bg"> <div class="footer"> <ul class="nav"> <a href="/">首页</a>|<a href="/about.shtml">关于我们</a>|<a href="/pro/">产品中心</a>|<a href="/xinwen/">新闻中心</a>|<a href="/anli/">成功案例</a>|<a href="/partner.shtml">合作伙伴</a>|<a href="/job.shtml">招贤纳士</a>|<a href="/problem/">常见问题</a>|<a href="/contact.shtml">联系我们</a> </ul> <div class="ft_con fn"> <p style="float: left;"><img alt="广气电气(上海)有限公司" src="/UpLoadFile/image/20150616/6357007197163254805131425.png" title="广气电气(上海)有限公司" height="100"/></p> <div class="fl f_txt"><p>版权所有Copyright©:广气电气(上海)有限公?/p><p><span id="ctl00_lbl_concent"></span></p><p>联系电话?21-59585587/59585488</p><p></p><p>手机号码?3818323487</p><p>??人:冷经?/p><p>传真号码?21-59585086</p><p>详细地址:上海市嘉定区嘉定工业园?         <img src="/UpLoadFile/image/20150706/6357177727806316223578985.gif" title="20140723151914_8857.gif" alt="20140723151914_8857.gif"/> 备案号:沪ICP?9099126?4</p></div> <p class="code fl"> <img title="二维? alt="二维? src="/UpLoadFile/image/20150624/6357076665816076074478965.png"/><span>二维?/span> </p> </div> </div> </div> <a href="http://www.hdonreymundo.com/">8ŲƱ</a> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body> </html> <script type="text/javascript"> $("#news9").addClass("cur2"); </script><script type="text/javascript"> function autoAddEllipsis(pStr, pLen) { var _ret = cutString(pStr, pLen); var _cutFlag = _ret.cutflag; var _cutStringn = _ret.cutstring; if ("1" == _cutFlag) { return _cutStringn + "..."; } else { return _cutStringn; } } function cutString(pStr, pLen) { var _strLen = pStr.length; var _tmpCode; var _cutString; var _cutFlag = "1"; var _lenCount = 0; var _ret = false; if (_strLen <= pLen / 2) { _cutString = pStr; _ret = true; } if (!_ret) { for (var i = 0; i < _strLen; i++) { if (isFull(pStr.charAt(i))) { _lenCount += 2; } else { _lenCount += 1; } if (_lenCount > pLen) { _cutString = pStr.substring(0, i); _ret = true; break; } else if (_lenCount == pLen) { _cutString = pStr.substring(0, i + 1); _ret = true; break; } } } if (!_ret) { _cutString = pStr; _ret = true; } if (_cutString.length == _strLen) { _cutFlag = "0"; } return { "cutstring": _cutString, "cutflag": _cutFlag }; } function isFull(pChar) { for (var i = 0; i < pChar.length; i++) { if ((pChar.charCodeAt(i) > 128)) { return true; } else { return false; } } } jQuery(function(){ jQuery(".SeoItem").each(function(){ jQuery(this).html(autoAddEllipsis(jQuery.trim(jQuery(this).text()),jQuery(this).attr("SeoLength"))); }); }); </script> <script src="/QQ/ServiceQQ.htm" type="text/javascript"></script><!-- Piwik --> <script type="text/javascript"> var _paq = _paq || []; _paq.push(["trackPageView"]); _paq.push(["enableLinkTracking"]); (function() { var u=(("https:" == document.location.protocol) ? "https" : "http") + "://ttotal.trueland.net/"; _paq.push(["setTrackerUrl", u+"piwik.php"]); _paq.push(["setSiteId", "2092"]); var d=document, g=d.createElement("script"), s=d.getElementsByTagName("script")[0]; g.type="text/javascript"; g.defer=true; g.async=true; g.src=u+"piwik.js"; s.parentNode.insertBefore(g,s); })(); </script> <!-- End Piwik Code --> <script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"slide":{"type":"slide","bdImg":"0","bdPos":"left","bdTop":"100"},"image":{"viewList":["qzone","tsina","tqq","renren","weixin"],"viewText":"分享到:","viewSize":"16"},"selectShare":{"bdContainerClass":null,"bdSelectMiniList":["qzone","tsina","tqq","renren","weixin"]}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script><script type="text/javascript"> var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://"); document.write(unescape("%3Cscript src='" + _bdhmProtocol + "#/h.js%3Fd8b84fdfd2867737c4e5184d2339e59f' type='text/javascript'%3E%3C/script%3E")) </script>