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We appreciate your patience as we improve our online experience.
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PXI-1000B直流机箱与阻抗很低的直流源相连时,会导致很大的浪涌电流。这个浪涌电流会导致一些不良结果。为了限制浪涌电流,可以将一个负温度系数热敏电阻(NTC)与直流源串联。当机箱开始供电时,NTC阻值很大,会限制直流源的浪涌电流,随着NTC温度的上升,NTC阻值逐渐下降,消耗的功率也逐渐下降。
例子:
应当注意的是,这种浪涌电流限制方法最有效的时候就是NTC处于低温的时候。如果功率上升很快,NTC温度上升极快,那么这种方法限制浪涌电流的能力就很有限。
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