| 摘要 |
PURPOSE:To reduce a necessary capacity of transforming means and to reduce in size a power source by stopping the operation of other load if a control load is operated, and recovering the operation of other load after the control load starts to operate to become an operation holding state. CONSTITUTION:An output terminal of a microcomputer 21 drives an exciting coil 24a of a relay 24. Normal open contact 24b of the relay 24 is connected to a main heater 25. Further, a load A31a, a load B32b, etc., are connected to the output terminal of the microcomputer 21. When a relay 24 of a control load is operated, the operations of the loads A31a, 31b are stopped to stop a load current. After a transformer voltage becomes a voltage state capable of sufficiently operating the relay 24, the relay 24 is started to be operated. After the relay 24 is effectively operated and then becomes a holding state, and the operations of the loads A31a, 31B are recovered. |
