厦门泰尼电气有限公司
主营产品: AB模块PLC |
厦门泰尼电气有限公司
主营产品: AB模块PLC |
参考价 | 面议 |
更新时间:2015-03-25 17:11:36浏览次数:98
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GR53X58*-*GR53X58
GR53X58*-*GR53X58
光敏电阻的检测。A用一黑纸片将光敏电阻的透光窗口遮住,此时万用表的指针基本保持不动,阻值接近无穷大。此值越大说明光敏电阻性能越好。若此值很小或接近为零,说明光敏电阻已烧穿损坏,不能再继续使用。B将一光源对准光敏电阻的透光窗口,此时万用表的指针应有较大幅度的摆动,阻值明显减小。此值越小说明光敏电阻性能越好。若此值很大甚至无穷大,表明光敏电阻内部开路损坏,也不能再继续使用。C将光敏电阻透光窗口对准入射光线,用小黑纸片在光敏电阻的遮光窗上部晃动,使其间断受光,此时万用表指针应随黑纸片的晃动而左右摆动。如果万用表指针始终停在某一位置不随纸片晃动而摆动,说明光敏电阻的光敏材料已经损坏。:张亮(工程师) 专线:
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