An electric circuit (or network) is an interconnection of physical electrical device. The purpose of electric circuits is to distribute and convert energy into some other forms. Accordingly, the basic circuit components are an energy source (or sources), an energy converter (or converters) and conductors connecting them. 电路（或者网络）是物理电气设备的一种互相连接。电路的目的是为了将能量分配和转换到另外一种形式中。因此，基本的电路元件包括电源、电能转换器以及连接它们的导体。An energy source (a primary or secondary cell, a generator and the like) converts chemical, m
