蓄電池充電機反饋回路開路
2019/4/25 9:41:43??????點擊：
如果蓄電(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)機(ji)變壓器次級的(de)電(dian)(dian)(dian)(dian)壓反饋回路(lu)(lu)開路(lu)(lu)，即分壓電(dian)(dian)(dian)(dian)阻(zu)開路(lu)(lu)，反饋電(dian)(dian)(dian)(dian)壓不能輸(shu)(shu)入(ru)ＰＷＭ脈寬調制芯(xin)(xin)片(pian)輸(shu)(shu)入(ru)腳，或(huo)者(zhe)初級線(xian)圈(quan)電(dian)(dian)(dian)(dian)流過大，脈寬調制芯(xin)(xin)片(pian)SG3525過流保護工(gong)作，或(huo)者(zhe)光(guang)(guang)耦(ou)(ou)合器PC817故(gu)障(zhang)(zhang)，SG3525的(de)輸(shu)(shu)出(chu)脈沖信號(hao)(hao)不能送到專用驅動芯(xin)(xin)片(pian)IR2110，都(dou)(dou)會使輸(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)壓為零。檢(jian)測(ce)(ce)思路(lu)(lu)：先查反饋分壓電(dian)(dian)(dian)(dian)阻(zu)各點(dian)電(dian)(dian)(dian)(dian)壓。如果正常(chang)(chang)，再(zai)查SG3525的(de)輸(shu)(shu)出(chu)引腳，如果蓄電(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)機(ji)輸(shu)(shu)出(chu)脈沖信號(hao)(hao)正常(chang)(chang)，再(zai)查IR2110輸(shu)(shu)入(ru)信號(hao)(hao)。若(ruo)IR2110輸(shu)(shu)入(ru)異(yi)(yi)常(chang)(chang)，則(ze)可能是光(guang)(guang)耦(ou)(ou)合器PC817故(gu)障(zhang)(zhang)，更(geng)換同(tong)型號(hao)(hao)光(guang)(guang)耦(ou)(ou)。若(ruo)前面檢(jian)測(ce)(ce)都(dou)(dou)正常(chang)(chang)，再(zai)查IR2110的(de)兩(liang)個(ge)脈沖輸(shu)(shu)出(chu)信號(hao)(hao)，如果發現異(yi)(yi)常(chang)(chang)，則(ze)是驅動芯(xin)(xin)片(pian)故(gu)障(zhang)(zhang)，更(geng)換芯(xin)(xin)片(pian)。
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