檢視双电源的原始碼

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|<center>'''双电源'''<br><img
src="https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg3.app17.com%2Fproducts%2Fbig%2F20130609%2F201306090249313970.jpg&refer=http%3A%2F%2Fimg3.app17.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1671461066&t=68438f1c91f829a5ac18c45875e6138a" width="280"></center><small>  圖片來自百度</small> 
|}
[[双电源自动切换开关]]是一种由微处理器控制，用于电网系统中网电与网电或网电与发电机电源启动切换的装置，可使电源连续源供电。系列双电源，当常用电突然故障或停电时，通过[[双电源切换开关]]，自动投入到备用电源上，（小负荷下备用电源也可由发电机供电，）使设备仍能正常运行。最常见的是电梯、消防、监控上、照明等。

*中文名:[[双电源]]

*外文名:Dual power supply

*功    能:转换开关，检测电源电路

*工作模式:自投自复(R)式　

*适用范围:电梯、消防、监控上、照明等