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)(xu)電(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian)機變(bian)壓(ya)(ya)器次級(ji)的電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)反(fan)饋(kui)回(hui)路(lu)(lu)開路(lu)(lu)，即分壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)阻開路(lu)(lu)，反(fan)饋(kui)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)不能(neng)(neng)輸(shu)(shu)(shu)入(ru)ＰＷＭ脈(mo)寬調制芯(xin)片輸(shu)(shu)(shu)入(ru)腳，或者(zhe)初(chu)級(ji)線圈電(dian)(dian)(dian)(dian)(dian)流(liu)過(guo)大(da)，脈(mo)寬調制芯(xin)片SG3525過(guo)流(liu)保護工作，或者(zhe)光(guang)耦(ou)(ou)合(he)器PC817故(gu)障，SG3525的輸(shu)(shu)(shu)出(chu)脈(mo)沖(chong)信號(hao)不能(neng)(neng)送到(dao)專(zhuan)用驅動芯(xin)片IR2110，都會使輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)為(wei)零。檢測思(si)路(lu)(lu)：先查反(fan)饋(kui)分壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)阻各點電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。如(ru)果正常(chang)，再(zai)查SG3525的輸(shu)(shu)(shu)出(chu)引腳，如(ru)果蓄(xu)(xu)電(dian)(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)(dian)機輸(shu)(shu)(shu)出(chu)脈(mo)沖(chong)信號(hao)正常(chang)，再(zai)查IR2110輸(shu)(shu)(shu)入(ru)信號(hao)。若(ruo)IR2110輸(shu)(shu)(shu)入(ru)異常(chang)，則可(ke)能(neng)(neng)是(shi)(shi)光(guang)耦(ou)(ou)合(he)器PC817故(gu)障，更換同型號(hao)光(guang)耦(ou)(ou)。若(ruo)前面檢測都正常(chang)，再(zai)查IR2110的兩(liang)個脈(mo)沖(chong)輸(shu)(shu)(shu)出(chu)信號(hao)，如(ru)果發現(xian)異常(chang)，則是(shi)(shi)驅動芯(xin)片故(gu)障，更換芯(xin)片。
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