portable switch

We build a synchronous rectifying switch power IC with high efficiency and good load characteristic following the requirements of the battery-powered portable equipments.

并具有良好大信号特性，以满足CPU、DSP和闪存等模块要求。根据电池供电便携式设备的要求，本论文设计了一款高效率、良好负载特性的双模式同步降压型开关电源IC。

The portable electric point switch tester is one test equipment that is specially used to test the electric point switch on the spot, the measuring objects are the output power and the electric machine current in the working process of the electric point switch.

便携式电动转辙机测试仪是一种专门用来在现场对电动转辙机进行检测的测试设备，其测量对象为电动转辙机动作过程中的输出力和电机电流。

After assembly, operation of the portable tester is on a normal track. It can be conveniently used to accurately measure the control cubicle electrical switch. On September 25, 2007, it successfully went through the evaluation and examination by the Shanghai Railway Bureau.

测试仪组装完毕之后，运行正常，使用方便，可准确的测试控制柜电器开关，于2007年09月25号，顺利通过上海铁路段评审。