微动开关 价格 厂家/公司 批发 阿里巴巴 淘宝 特美仕
一般尺寸为长19.8宽6.4高10.2，功能上有高精度和高寿命的不同性能。如SM系列:
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Operating Frequency (mechanical).....120 operations / mim
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Operating Frequency (electrical).....10~30 operations / mim
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Contact Resistance (initial).....300m Ω (Max.)
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Insulation Resistance (at 500VDC).....100M Ω (Min.)
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Dielectric Strength (50-60Hz).....1000VAC RMS
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Service Life (mechanical).....Min. 10000000 operations
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Service Life (electrical).....Min. 6000 operations
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故障实例三：交流220V整流滤波电路出现短路性故障，且开机烧保险。先检查一下整流二极管有无短路、滤波电容是否严重漏电。还可拔去消磁线圈插头，检查一下消磁热敏电阻有无短路性故障，如有应换新。
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