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MOSFETS </a> </div> </div> <ul class="info_list"> <li class="item relative wow fadeInUp" data-wow-delay="0s" data-wow-duration="1.2s"> <div class="date absolute"> <span class="d">26</span> <span class="ym">2021-09</span> </div> <div class="info absolute"> <div class="title trans text-over"> <a class="trans" href="/faq/news-i01563i1.html">保险丝“电压降”是什么意思详解</a> </div> <div class="brief text-line trans"> 电压降是电路中的专有名词，是指电流通过电气设备(即电阻)时，设备两端产生的电位差(电位差)，称为电压降。保险丝的电压降实际上是指保险丝在其额定电流条件下两端的电压降。保险丝电压的下降反映了保险丝的内阻，其电阻值不宜过大。如果在电路中安装内阻(电压降)过大的保险丝，会影响电路中的系统参数，使电路无法正常工作。事实上，标准的电压降值不仅有其在线规定，还有其一致性。 </div> </div> <div class="clear"></div> </li> <li class="item relative wow fadeInUp" data-wow-delay="0.1s" data-wow-duration="1.2s"> <div class="date absolute"> <span class="d">26</span> <span class="ym">2021-09</span> </div> <div class="info absolute"> <div class="title trans text-over"> <a class="trans" href="/faq/news-i01562i1.html">浅谈自恢复保险丝“正常动作”条件有哪些</a> </div> <div class="brief text-line trans"> 自恢复保险丝正常动作所需条件释义如下（1）正常工作电流在25℃下运行，自恢复保险丝的电流额定值通常降低25%，以避免有害熔断。大多数传统保险丝使用的材料熔化温度较低。因此，这种保险丝对环境温度的变化很敏感。例如，电流额定值为10A的自恢复保险丝通常不建议在25℃以上的电流下运行；（2）保险丝保险丝的电压额定值必须等于或大于有效电路电压。标准电压额定值系列一般为32V、125V、250V、600V； </div> </div> <div class="clear"></div> </li> <li class="item relative wow fadeInUp" data-wow-delay="0.2s" data-wow-duration="1.2s"> <div class="date absolute"> <span class="d">26</span> <span class="ym">2021-09</span> </div> <div class="info absolute"> <div class="title trans text-over"> <a class="trans" href="/faq/news-i01561i1.html">“环境温度”对于自恢复保险丝有影响吗？</a> </div> <div class="brief text-line trans"> 自恢复保险丝由于电阻可以恢复，可以多次重复使用。电阻一般在十几秒到几十秒之间恢复到初始值的1.6倍左右的水平，此时热敏电阻的维持电流已经恢复到额定值，可以再次使用。一般而言，面积和厚度较小的热敏电阻恢复较快，而面积和厚度较大的热敏电阻恢复较慢。 </div> </div> <div class="clear"></div> </li> <li class="item relative wow fadeInUp" data-wow-delay="0.3s" data-wow-duration="1.2s"> <div class="date absolute"> <span class="d">26</span> <span class="ym">2021-09</span> </div> <div class="info absolute"> <div class="title trans text-over"> <a class="trans" href="/faq/news-i01560i1.html">自恢复保险丝承受“最大电压”是多少？</a> </div> <div class="brief text-line trans"> 浪涌闸流管和放电管用于瞬态过压?；?，聚合物正温度系数自恢复保险丝只能用于过流?；?？那么他们能承受多少最大电流和电压呢？一般而言，传统的过压?；ぷ爸弥饕糜谒蔡贡；?，但也适用于不超过其额定功率的长期稳压。自恢复保险丝不仅可以用于过流?；?，还可以用于过温?；?，或者电流/温度共同作用下的?；?。此外，它还可以与IC一起用于温度检测和反馈温度信号的?；?。目前自恢复保险丝能够承受的最大电压为600Vrms，最大保持电流为15A；汽车用 PPTC最大电压60Vdc，最大保持电流为15A。 </div> </div> <div class="clear"></div> </li> <li class="item relative wow fadeInUp" data-wow-delay="0.4s" data-wow-duration="1.2s"> <div class="date absolute"> <span class="d">26</span> <span class="ym">2021-09</span> </div> <div class="info absolute"> <div class="title trans text-over"> <a class="trans" href="/faq/news-i01559i1.html">浅析贴片自恢复保险丝“测试”标准及流程详解</a> </div> <div class="brief text-line trans"> 一、贴片自恢复保险丝“测试标准” （1）测试环境为25℃的室温环境，无光、无热辐射；（2）保险丝的初始内阻Rimin必须在规格书的范围内；（3）保险丝在Ihold电流下保持15分钟不动作，判定为合格；（4）保险丝在Itrip电流下5分钟内动作，判定为合格；（5）保险丝动作后内阻R1max应在规格书范围内； </div> </div> <div class="clear"></div> </li>  </ul> 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