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充電器中的Y電容的作用是什么?

2019/8/8 10:00:14??????點擊:

  充電器(qi)在充(chong)電(dian)時如(ru)遇上劣質充(chong)電(dian)器會出現無(wu)故自燃,爆手機,甚(shen)至(zhi)是在充(chong)電(dian)時觸(chu)電(dian),引發(fa)人員傷忙。這一切都(dou)源(yuan)于(yu)(yu)(yu)充(chong)電(dian)器中的電(dian)子元器件的品質問題。手機充(chong)電(dian)器y電(dian)容用于(yu)(yu)(yu)共模濾波(bo),它接于(yu)(yu)(yu)L于(yu)(yu)(yu)地(di)或N于(yu)(yu)(yu)地(di)之(zhi)間,濾除(chu)L對地(di)或N對地(di)的共模信號,y電(dian)容通(tong)常對稱使用,作用主(zhu)要(yao)有旁(pang)路;去(qu)耦;濾波(bo);儲(chu)能。

充電器
在入(ru)力(li)初(chu)級(ji)端有(you)個耐(nai)(nai)壓(ya)400v的(de)(de)(de)(de)電(dian)容(rong)(rong),那是主(zhu)濾波(bo)電(dian)容(rong)(rong),濾除市電(dian)整流(liu)(liu)后的(de)(de)(de)(de)雜波(bo),使后面電(dian)路能(neng)得到更為平穩(wen)的(de)(de)(de)(de)直流(liu)(liu)正(zheng)弦波(bo),只有(you)雜波(bo)越少,電(dian)路才能(neng)更好(hao)的(de)(de)(de)(de)穩(wen)定工作,至于電(dian)容(rong)(rong)選400v耐(nai)(nai)壓(ya)值(zhi),開關電(dian)路工作后,其(qi)電(dian)容(rong)(rong)兩端將有(you)300多伏壓(ya)降,再加上通(tong)電(dian)瞬間峰值(zhi)電(dian)壓(ya),所(suo)(suo)以如果耐(nai)(nai)壓(ya)值(zhi)太小(xiao),會影起(qi)電(dian)容(rong)(rong)暴裂,而輸(shu)出端電(dian)容(rong)(rong)視其(qi)輸(shu)出電(dian)壓(ya)大(da)(da)小(xiao)選擇(ze)適合的(de)(de)(de)(de)耐(nai)(nai)壓(ya)值(zhi),如5v則耐(nai)(nai)壓(ya)值(zhi)是10v,該電(dian)容(rong)(rong)也是濾波(bo)作用(yong),使充電(dian)器輸(shu)出平穩(wen)的(de)(de)(de)(de)直流(liu)(liu)電(dian),至于容(rong)(rong)量(liang)(liang)(liang)的(de)(de)(de)(de)大(da)(da)小(xiao),前面耐(nai)(nai)壓(ya)大(da)(da)的(de)(de)(de)(de)電(dian)容(rong)(rong)一(yi)(yi)般選擇(ze)47~470uF,輸(shu)出電(dian)容(rong)(rong)一(yi)(yi)般100~1000uF,原則上是容(rong)(rong)量(liang)(liang)(liang)越大(da)(da)越好(hao),但實際上容(rong)(rong)量(liang)(liang)(liang)越大(da)(da)漏電(dian)流(liu)(liu)越大(da)(da),y電(dian)容(rong)(rong)通(tong)交流(liu)(liu)阻直流(liu)(liu)。所(suo)(suo)以我們為手機充電(dian)時要(yao)選擇(ze)質(zhi)量(liang)(liang)(liang)好(hao)的(de)(de)(de)(de)充電(dian)器。而y電(dian)容(rong)(rong)的(de)(de)(de)(de)品(pin)質(zhi)好(hao)壞(huai)直接充電(dian)器的(de)(de)(de)(de)質(zhi)量(liang)(liang)(liang)。
作為手(shou)機(ji)充電(dian)器中的y電(dian)容,質量(liang)保(bao)障是(shi)很重要的,選(xuan)購y電(dian)容時(shi)選(xuan)擇必(bi)須有(you)安(an)全檢測(ce)機(ji)構的認證和各工業國的安(an)規(gui)認證,一(yi)般產品(pin)上都(dou)有(you)認證標識。
手機充電(dian)器y電(dian)容(rong)(rong),y電(dian)容(rong)(rong),jec y電(dian)容(rong)(rong),y電(dian)容(rong)(rong)器
  手機(ji)充(chong)(chong)電(dian)器y電(dian)容(rong)用于共模濾(lv)波,原則(ze)上是容(rong)量(liang)越(yue)(yue)大越(yue)(yue)好.但實際上容(rong)量(liang)越(yue)(yue)大漏電(dian)流(liu)越(yue)(yue)大,y電(dian)容(rong)通交流(liu)阻(zu)直流(liu).所以我們為手機(ji)充(chong)(chong)電(dian)時(shi)要選(xuan)擇質量(liang)好的充(chong)(chong)電(dian)器,而y電(dian)容(rong)的品質好壞(huai)直接(jie)充(chong)(chong)電(dian)器的質量(liang).

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