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黄委会通信管理局1994年程控交换机扩容,安装了黄河通信专网中第一台新西兰SWICHTEC 公司生产的 SWICHTEC 系列48V/50A 高频开关电源。E2733变频开关方式隔离整流器模块,模块电路采用的是世界上最先进的高频开关和谐振技术设计。采用并联谐振模式拓扑的 DC-DC 功率变换器,具有高效率,高功率因数,输入输出隔离,及体积小、重量轻的高可靠性直流电源,工作开关频率是根据输出负载的情况在160KHZ 和450KHZ 之间变化来达到稳定输出电压,输入电流波形通过一个升压变换器进行调整使其与电压同相呈
Yellow River Commission Communications Authority in 1994 program-controlled switchboard expansion, the installation of the Yellow River communications network in the first New Zealand SWICHTEC SWICHTEC series of 48V / 50A high-frequency switching power supply. E2733 frequency conversion switch isolation rectifier module, the module circuit is used in the world’s most advanced high-frequency switching and resonant technology design. DC-DC power converter with parallel resonant mode topology with high efficiency, high power factor, input and output isolation, and small size, light weight and high reliability DC power supply, the operating switching frequency is based on the output load conditions at 160KHZ and 450KHZ to achieve a stable output voltage changes, the input current waveform by a boost converter to adjust the voltage in phase with