| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for an electromagnetic load capable of preventing an overcharging at the time of occurrence of a short-circuit of a power supply. SOLUTION: An energy supplied to the solenoids 11, 12, and 13 of an injector is accumulated in a capacitor C1, and transistors Q2, Q11, Q12, and Q13 are controlled by inputted injection signals TQ1, TQ3, and TQ to supply the energy stored in the capacitor C1 to the solenoids 11, 12, and 13. A fly-back energy occurring at the time of interruption of energization is returned to energy collecting diodes D11, D12, and D13 and the capacitor C1. When over-voltage detection signals are outputted and over-current detection signals are outputted, the energization is stopped by an AND gate 50 even if injection signals TQ1, TQ3, and TQ5 are inputted.
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