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用數(shù)字萬用表蜂鳴器檔丈量電容好壞

發(fā)布日期:2022-10-09 點擊率:293


運用數(shù)字萬用表蜂鳴器檔,能夠活絡(luò)查看電解電容器的質(zhì)量好壞。丈量辦法:將數(shù)字萬用表撥至蜂鳴器檔,用兩支表筆別離與被測電容器Cx的兩個引腳觸摸,應(yīng)能聽到一陣時刻短的蜂鳴聲,隨即動態(tài)連續(xù),一同閃現(xiàn)溢出符號“1”。接著,再將兩支表筆對調(diào)丈量一次,蜂鳴器應(yīng)再發(fā)聲,究竟閃現(xiàn)溢出符號“1”,此種狀況闡明被測電解電容根柢正常。此刻,可再撥至20MΩ或200MΩ高阻檔丈量一下電容器的漏電阻,即可差異其好壞。


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