| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor driving circuit that prevents damage that arises from the reversed polarity of an impressed voltage with a simple structure. <P>SOLUTION: The motor driving circuit 1 is provided with the relay 11 of a transfer contact type, a motor 10, diodes D1, D2, and an FET 12. The first connector 11a and the second connector 11b of the relay 11 are each connected to the positive electrode side and the negative electrode side of a power source respectively. Also, the common terminal 14c and the common terminal 15c of the relay 11 are connected to the first motor terminal 10a and the second motor terminal 10b of the motor 10, respectively. The anodes of the diode D1 and the diode D2 are both connected to the second connector 11b. The cathode of the diode D1 is connected to the first motor terminal 10a, and the cathode of the diode D2 to the second motor terminal 10b. When not in operation, the relay 11 is put into a state that the common terminal 14c and the common terminal 15c are both connected to the second connector 11b. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
