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HE-XE105DF
可以用万用表来检测这四种常见的故障。有些开路的贴片电容用眼睛就可以看出来,它们往往在外表上有洞、外表损坏或呈断裂状。电解电容在电器设备中的用量很大,故障率很高。查找损坏的电解电容方法有以下几种:
(1)看:有的电容损坏时会漏液,电容下面的电路板表面甚至电容外表都会有一层油渍,这种电容不能再用;有的电容损坏后会鼓起,这种电容也不能继续使用;
(2)摸:开机后有些漏电严重的电解电容会发热,用手指触摸时甚至会烫手,这种电容更换;
(3)电解电容内部有电解液,长时间烘烤会使电解液变干,导致电容量减小。
测试电容的的主要技术参数有:电容量;耐压;误差等。
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