The main panel part comprises a sample holder arranged at the upper part of the panel, and a two-way switch, wherein the upper end of the sample is fixed on the sample holder by a fixing clamp. 主面板部分包括面板上方安装的样品架,样品上端通过固定夹固定在样品架上,面板上同时安装有一个双向开关。
Voltage detect of three phase AC, the warning of over-voltage, under-voltage, lost phase and power failure, two-way AC circuits switch full-automatically. 三相交流电压检测,过压、欠压、缺相、停电告警,全自动双路交流前换功能;
In order to control the AC with the chopping method, MOSFET is used to design a pair of two-way electronic switch and an AC Buck-Boost circuit is formed. 采用MOSFET构成一对双向导电型电力电子开关,对交流电进行斩波控制,形成交流Buck-Boost电路。