DIRECT CURRENT SWITCH

PROBLEM TO BE SOLVED: To provide a direct current switch causing no arc when an opening/closing switch is operated. SOLUTION: A power MOSFETQ1 is arranged in the middle of a negative electrode electric line L2 feeding direct current power, and a source S for the power MOSFETQ1 is connected to the feeding side, while a drain D is connected to an electric apparatus side. Connection points of resistors R1 and R2 are respectively connected to a gate G and the source S of the power MOSFETQ1. This direct current switch SW is arranged between the connection points of the respective resistors and the source S of the power MOSFETQ1. When the closed switch SW is opened by operation of a switch operation part 5a, partial voltage, which is ready for impression to the gate G of the power MOSFETQ1, of the resistors R1 and R2 is impressed to the gate G. When the opened switch SW is closed by operation of the switch operation part 5a, partial voltage, which is impressed to the gate G of the power MOSFETQ1, of the resistors R1 and R2 is set to be read for impression to the gate G. COPYRIGHT: (C)2006,JPO&NCIPI