Plug-type power, user the transfer switch to change the initial step coils adjust The welding voltage. Thus the performance is reliable and maintenance id very simple.

抽头式电源，用转换开关改变初级线圈匝数来调节焊接电压，因此性能十分可靠，维修亦简便。

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Inside installed selector switch, can be used in the circuit below60A as power lead-in switch, and the switch cab control motorstart, change speed, stop, and commutation.

内装转换开关，用于电流60A以下的电气线路中，作为电源引入开关，并可控制电动机起动变速停止换向等。

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The result shows that the circuit is powerful in limiting the voltage and the current change rates of the switch devices and has an advantage of less power consumption.

结果表明该电路限定开关器件电压变化率和电流变化率的能力良好，具有功耗较低的优势。

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In states with deregulated electricity markets, power providers must compete for customers who can switch to a competitor much like they change cellphone services.

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