| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a solenoid valve driving device in which the configuration for supplying a peak current and a hold current to a solenoid valve can be simplified. <P>SOLUTION: A capacitor C capable of supplying the peak current to coils 11a, 12a is connected in parallel with a power feeding path to the coils 11a, 12a from a DC power source B. Switches 22a, 22b are each disposed on the low voltage side (low side) of the coils 11a, 12a, wherein the on-state at the beginning of a driving period allows the high voltage of the capacitor C to be applied so as to supply the peak current to the coils 11a, 12a, and the switching operation after supplying the peak current allows the power source voltage of DC power source B to be applied so as to supply the hold current to the coils 11a, 12a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
