| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stepping motor driving circuit capable of driving a plurality of motors by a simple structure and capable of preventing the motor not selected from being driven. <P>SOLUTION: This motor driving device is provided with a driving circuit 2 that drives two-phase stepping motors 10a to 10c according to phase signals, a plurality of stepping motor 10a to 10c common-connected, a selecting circuit 11 that selectively supplies driving voltages to the corresponding ones of the stepping motors 10a to 10c according to a selection signal, and a wiring switching means 3 provided between the stepping motors 10a to 10c and the driving circuit 2. The wiring switching means 3 is formed of switching contacts provided at two portions of an A phase or an inverted A phase and a B phase or an inverted B phase, using a single two-circuit switching contact relay. <P>COPYRIGHT: (C)2004,JPO |
