你知道(dao)嗎，電源適配(pei)器是(shi)可以防雷的(de)，所以即使是(shi)在下雨(yu)天也(ye)可以放心安全使用(yong)，那(nei)么你知道它是(shi)如何做到的(de)嗎？

因(yin)為在電(dian)(dian)源適(shi)配(pei)器的電(dian)(dian)路中裝有壓(ya)敏電(dian)(dian)阻器，壓(ya)敏電(dian)(dian)阻器在電(dian)(dian)源適(shi)配(pei)器中主要用來吸(xi)收浪涌電(dian)(dian)壓(ya)。起過電(dian)(dian)壓(ya)保護(hu)、防(fang)雷、抑制浪涌電(dian)(dian)流(liu)、吸(xi)收尖峰脈沖、限幅、高(gao)壓(ya)滅弧、消噪、保護(hu)半導體(ti)元器件等(deng)作用。

 壓敏(min)(min)電(dian)(dian)阻(zu)(zu)器(qi)是一種具有瞬(shun)態電(dian)(dian)壓抑制功能的(de)(de)(de)元件，可以用來代替瞬(shun)態抑制二極管(guan)(guan)、齊納二極管(guan)(guan)和電(dian)(dian)容(rong)器(qi)的(de)(de)(de)組合(he)。壓敏(min)(min)電(dian)(dian)阻(zu)(zu)器(qi)可以對(dui)充電(dian)(dian)器(qi)電(dian)(dian)路中(zhong)的(de)(de)(de)集(ji)成電(dian)(dian)路IC及其它半導體(ti)元件進(jin)行保(bao)護，防止因靜(jing)電(dian)(dian)放電(dian)(dian)、浪涌及其它瞬(shun)態電(dian)(dian)流（如雷擊等）而造成對(dui)它們的(de)(de)(de)損(sun)壞。

使用(yong)時(shi)只需將壓敏(min)(min)電(dian)(dian)(dian)阻器并接于(yu)被保護的(de)IC或(huo)充電(dian)(dian)(dian)器的(de)交(jiao)流輸(shu)入電(dian)(dian)(dian)路(lu)上，當電(dian)(dian)(dian)壓瞬間高(gao)(gao)于(yu)某(mou)一數值時(shi)，壓敏(min)(min)電(dian)(dian)(dian)阻器阻值迅速(su)下降，導通大電(dian)(dian)(dian)流，從而(er)(er)保護IC或(huo)電(dian)(dian)(dian)器設備；當電(dian)(dian)(dian)壓低于(yu)壓敏(min)(min)電(dian)(dian)(dian)阻器工(gong)作電(dian)(dian)(dian)壓值時(shi)，壓敏(min)(min)電(dian)(dian)(dian)阻器阻值極(ji)高(gao)(gao)，近乎開路(lu)，因而(er)(er)不會影響器件(jian)或(huo)充電(dian)(dian)(dian)器的(de)正常工(gong)作。