在线通信用可控硅整流电源自身电耗高、效率低，使运行成本增加；
On-line communicational silicon-controlled rectification power source with consumable electricity and low efficiency will increase operating cost.
直流电源柜：三相可控硅整流桥（SCR）、计算机数字脉冲触发板、平波电感、L、C滤波器等组成。
DC power supply cabinet: three-phase silicon-controlled rectifier (SCR), computer digital pulse triggers plate, flat-wave inductor, L, C filter, etc.
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