蓄電池充電機反饋回路開路
2019/4/25 9:41:43??????點擊：
如(ru)果蓄(xu)電(dian)池(chi)充(chong)電(dian)機變壓(ya)(ya)(ya)(ya)(ya)器(qi)次級的電(dian)壓(ya)(ya)(ya)(ya)(ya)反饋(kui)回路開路，即分(fen)壓(ya)(ya)(ya)(ya)(ya)電(dian)阻(zu)開路，反饋(kui)電(dian)壓(ya)(ya)(ya)(ya)(ya)不能(neng)輸(shu)(shu)(shu)入ＰＷＭ脈(mo)寬(kuan)調(diao)(diao)制芯(xin)片(pian)輸(shu)(shu)(shu)入腳，或者初級線圈電(dian)流(liu)過大，脈(mo)寬(kuan)調(diao)(diao)制芯(xin)片(pian)SG3525過流(liu)保(bao)護工作(zuo)，或者光(guang)耦(ou)合器(qi)PC817故(gu)障，SG3525的輸(shu)(shu)(shu)出(chu)脈(mo)沖信(xin)號不能(neng)送到專用驅動(dong)(dong)芯(xin)片(pian)IR2110，都(dou)會(hui)使輸(shu)(shu)(shu)出(chu)電(dian)壓(ya)(ya)(ya)(ya)(ya)為零。檢測思路：先查(cha)反饋(kui)分(fen)壓(ya)(ya)(ya)(ya)(ya)電(dian)阻(zu)各點電(dian)壓(ya)(ya)(ya)(ya)(ya)。如(ru)果正常(chang)(chang)(chang)，再查(cha)SG3525的輸(shu)(shu)(shu)出(chu)引腳，如(ru)果蓄(xu)電(dian)池(chi)充(chong)電(dian)機輸(shu)(shu)(shu)出(chu)脈(mo)沖信(xin)號正常(chang)(chang)(chang)，再查(cha)IR2110輸(shu)(shu)(shu)入信(xin)號。若(ruo)IR2110輸(shu)(shu)(shu)入異常(chang)(chang)(chang)，則可能(neng)是光(guang)耦(ou)合器(qi)PC817故(gu)障，更換同型號光(guang)耦(ou)。若(ruo)前面檢測都(dou)正常(chang)(chang)(chang)，再查(cha)IR2110的兩個脈(mo)沖輸(shu)(shu)(shu)出(chu)信(xin)號，如(ru)果發現異常(chang)(chang)(chang)，則是驅動(dong)(dong)芯(xin)片(pian)故(gu)障，更換芯(xin)片(pian)。
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