充電器在充(chong)電(dian)(dian)時(shi)如遇上劣質充(chong)電(dian)(dian)器(qi)會出現(xian)無(wu)故自燃，爆手機(ji)，甚至是在充(chong)電(dian)(dian)時(shi)觸電(dian)(dian)，引(yin)發人員傷(shang)忙。這一(yi)切都源于(yu)(yu)(yu)充(chong)電(dian)(dian)器(qi)中的電(dian)(dian)子元(yuan)器(qi)件的品質問題。手機(ji)充(chong)電(dian)(dian)器(qi)y電(dian)(dian)容(rong)用(yong)(yong)于(yu)(yu)(yu)共模(mo)濾(lv)波，它接于(yu)(yu)(yu)L于(yu)(yu)(yu)地(di)(di)或N于(yu)(yu)(yu)地(di)(di)之(zhi)間，濾(lv)除(chu)L對地(di)(di)或N對地(di)(di)的共模(mo)信號，y電(dian)(dian)容(rong)通(tong)常對稱(cheng)使用(yong)(yong)，作用(yong)(yong)主要有(you)旁(pang)路；去耦；濾(lv)波；儲(chu)能。

在入(ru)力(li)初級(ji)端有個耐(nai)壓400v的(de)(de)電(dian)(dian)(dian)(dian)容，那是主(zhu)濾波(bo)電(dian)(dian)(dian)(dian)容，濾除市電(dian)(dian)(dian)(dian)整流(liu)(liu)(liu)(liu)后的(de)(de)雜波(bo)，使后面電(dian)(dian)(dian)(dian)路能(neng)得到(dao)更為平(ping)穩(wen)的(de)(de)直流(liu)(liu)(liu)(liu)正弦波(bo)，只有雜波(bo)越(yue)(yue)少，電(dian)(dian)(dian)(dian)路才能(neng)更好(hao)(hao)的(de)(de)穩(wen)定工作(zuo)(zuo)，至于電(dian)(dian)(dian)(dian)容選(xuan)400v耐(nai)壓值(zhi)，開關電(dian)(dian)(dian)(dian)路工作(zuo)(zuo)后，其電(dian)(dian)(dian)(dian)容兩端將有300多(duo)伏壓降，再(zai)加上(shang)通(tong)電(dian)(dian)(dian)(dian)瞬間峰值(zhi)電(dian)(dian)(dian)(dian)壓，所以如果耐(nai)壓值(zhi)太(tai)小，會(hui)影起(qi)電(dian)(dian)(dian)(dian)容暴裂，而輸(shu)出(chu)端電(dian)(dian)(dian)(dian)容視其輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓大(da)小選(xuan)擇適合(he)的(de)(de)耐(nai)壓值(zhi)，如5v則耐(nai)壓值(zhi)是10v，該電(dian)(dian)(dian)(dian)容也是濾波(bo)作(zuo)(zuo)用，使充電(dian)(dian)(dian)(dian)器輸(shu)出(chu)平(ping)穩(wen)的(de)(de)直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)，至于容量(liang)的(de)(de)大(da)小，前面耐(nai)壓大(da)的(de)(de)電(dian)(dian)(dian)(dian)容一般選(xuan)擇47~470uF，輸(shu)出(chu)電(dian)(dian)(dian)(dian)容一般100~1000uF，原(yuan)則上(shang)是容量(liang)越(yue)(yue)大(da)越(yue)(yue)好(hao)(hao)，但實際(ji)上(shang)容量(liang)越(yue)(yue)大(da)漏電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)越(yue)(yue)大(da)，y電(dian)(dian)(dian)(dian)容通(tong)交流(liu)(liu)(liu)(liu)阻直流(liu)(liu)(liu)(liu)。所以我們為手機充電(dian)(dian)(dian)(dian)時要(yao)選(xuan)擇質(zhi)量(liang)好(hao)(hao)的(de)(de)充電(dian)(dian)(dian)(dian)器。而y電(dian)(dian)(dian)(dian)容的(de)(de)品質(zhi)好(hao)(hao)壞(huai)直接充電(dian)(dian)(dian)(dian)器的(de)(de)質(zhi)量(liang)。
作為手機充(chong)電器中的(de)y電容，質量保障是(shi)很重要的(de)，選購y電容時(shi)選擇必須有安全檢測機構的(de)認證和各工業國的(de)安規認證，一般產(chan)品上都有認證標識。
手(shou)機充電(dian)(dian)(dian)(dian)器y電(dian)(dian)(dian)(dian)容，y電(dian)(dian)(dian)(dian)容，jec y電(dian)(dian)(dian)(dian)容，y電(dian)(dian)(dian)(dian)容器
　　手機充(chong)電器y電容用于共模(mo)濾波，原則(ze)上是容量(liang)越大越好(hao).但實際上容量(liang)越大漏電流越大，y電容通交流阻(zu)直(zhi)流.所以我(wo)們為手機充(chong)電時要選擇質(zhi)量(liang)好(hao)的(de)充(chong)電器，而y電容的(de)品(pin)質(zhi)好(hao)壞(huai)直(zhi)接充(chong)電器的(de)質(zhi)量(liang).