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红绿灯和直流电源监视灯为什么要串联一电阻?

问答题
2022-09-08 07:43
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正确答案

红绿灯串电阻的目的是防止灯座处发生短路时造成开关误跳、合闸。
直流电源监视灯串联一个电阻的目的是防止灯丝或灯座处短接造成直流电源短路以及防止电源电压高烧坏直流电源的监视灯。


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