GR53X58*-*GR53X58
GR53X58*-*GR53X58
光敏電阻的檢測。A用一黑紙片將光敏電阻的透光窗口遮住，此時萬用表的指針基本保持不動，阻值接近無窮大。此值越大說明光敏電阻性能越好。若此值很小或接近為零，說明光敏電阻已燒穿損壞，不能再繼續(xù)使用。B將一光源對準(zhǔn)光敏電阻的透光窗口，此時萬用表的指針應(yīng)有較大幅度的擺動，阻值明顯減小。此值越小說明光敏電阻性能越好。若此值很大甚至無窮大，表明光敏電阻內(nèi)部開路損壞，也不能再繼續(xù)使用。C將光敏電阻透光窗口對準(zhǔn)入射光線，用小黑紙片在光敏電阻的遮光窗上部晃動，使其間斷受光，此時萬用表指針應(yīng)隨黑紙片的晃動而左右擺動。如果萬用表指針始終停在某一位置不隨紙片晃動而擺動，說明光敏電阻的光敏材料已經(jīng)損壞。：張亮（工程師） 專線：
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