充電器在充電(dian)時如遇上劣質(zhi)充電(dian)器會(hui)出現無故自燃，爆手機，甚至是(shi)在充電(dian)時觸電(dian)，引發(fa)人(ren)員傷忙。這(zhe)一(yi)切都源于(yu)充電(dian)器中的(de)(de)(de)電(dian)子元器件的(de)(de)(de)品質(zhi)問(wen)題。手機充電(dian)器y電(dian)容(rong)用于(yu)共模(mo)濾(lv)波(bo)，它接于(yu)L于(yu)地(di)或(huo)N于(yu)地(di)之間，濾(lv)除L對地(di)或(huo)N對地(di)的(de)(de)(de)共模(mo)信(xin)號，y電(dian)容(rong)通常對稱使用，作(zuo)用主(zhu)要有旁(pang)路；去耦；濾(lv)波(bo)；儲能(neng)。

在入力初級端有(you)個耐壓(ya)(ya)400v的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容，那是主濾波(bo)電(dian)(dian)(dian)(dian)(dian)(dian)容，濾除市電(dian)(dian)(dian)(dian)(dian)(dian)整(zheng)流后的(de)(de)雜波(bo)，使后面電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)能得到更(geng)為平穩的(de)(de)直流正弦(xian)波(bo)，只有(you)雜波(bo)越(yue)(yue)(yue)少，電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)才能更(geng)好的(de)(de)穩定工作，至(zhi)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)容選400v耐壓(ya)(ya)值，開關電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)工作后，其電(dian)(dian)(dian)(dian)(dian)(dian)容兩端將有(you)300多伏壓(ya)(ya)降，再加(jia)上通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)瞬間峰值電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，所以(yi)如果耐壓(ya)(ya)值太小，會影(ying)起電(dian)(dian)(dian)(dian)(dian)(dian)容暴裂，而(er)輸出端電(dian)(dian)(dian)(dian)(dian)(dian)容視其輸出電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)大(da)小選擇(ze)適(shi)合的(de)(de)耐壓(ya)(ya)值，如5v則(ze)(ze)耐壓(ya)(ya)值是10v，該(gai)電(dian)(dian)(dian)(dian)(dian)(dian)容也是濾波(bo)作用，使充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)輸出平穩的(de)(de)直流電(dian)(dian)(dian)(dian)(dian)(dian)，至(zhi)于(yu)容量(liang)的(de)(de)大(da)小，前面耐壓(ya)(ya)大(da)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容一(yi)(yi)般(ban)選擇(ze)47~470uF，輸出電(dian)(dian)(dian)(dian)(dian)(dian)容一(yi)(yi)般(ban)100~1000uF，原則(ze)(ze)上是容量(liang)越(yue)(yue)(yue)大(da)越(yue)(yue)(yue)好，但實際上容量(liang)越(yue)(yue)(yue)大(da)漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)流越(yue)(yue)(yue)大(da)，y電(dian)(dian)(dian)(dian)(dian)(dian)容通(tong)交流阻直流。所以(yi)我們為手機(ji)充電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)要選擇(ze)質(zhi)量(liang)好的(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)。而(er)y電(dian)(dian)(dian)(dian)(dian)(dian)容的(de)(de)品質(zhi)好壞直接(jie)充電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)的(de)(de)質(zhi)量(liang)。
作為手機充(chong)電器(qi)中的(de)y電容，質(zhi)量保障是很重(zhong)要的(de)，選購y電容時選擇必須有(you)安(an)全檢(jian)測機構的(de)認(ren)(ren)證(zheng)和各工業國(guo)的(de)安(an)規認(ren)(ren)證(zheng)，一(yi)般產(chan)品上都(dou)有(you)認(ren)(ren)證(zheng)標識。
手(shou)機充電(dian)器(qi)y電(dian)容，y電(dian)容，jec y電(dian)容，y電(dian)容器(qi)
　　手機充(chong)電器y電容用于共模濾波，原則上(shang)(shang)是容量(liang)越大(da)越好.但實際(ji)上(shang)(shang)容量(liang)越大(da)漏(lou)電流越大(da)，y電容通(tong)交流阻直流.所以我們為手機充(chong)電時要選擇質(zhi)量(liang)好的(de)充(chong)電器，而y電容的(de)品質(zhi)好壞直接(jie)充(chong)電器的(de)質(zhi)量(liang).