| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator drive circuit in which the number of necessary switching elements can be reduced as much as possible to reduce the costs and downsize the drive circuit, and the motion of the drive circuit can be improved in reliability in the case of driving two of a plurality of actuators using an H-bridge circuit at the same time. SOLUTION: A first series circuit 20 connected in series with a pair of switching elements 1-1 and 1-2, a second series circuit 22 connected in series with a pair of switching elements 2-1 and 2-2, and a third series circuit 24 connected in series with a pair of switching elements 3-1 and 3-2 are connected in parallel to each other between a positive power terminal 16 and an earth terminal 18. A first actuator 10 is connected in series with the middle point of the series circuit 20 and the middle point of the series circuit 22. A second actuator 12 is connected in series with series with the middle point of the series circuit 22 and the middle point of the series circuit 24. A third actuator 14 is connected in series with the middle point of the series circuit 20 and the middle point of the series circuit 24. COPYRIGHT: (C)2006,JPO&NCIPI
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