| 摘要 |
PURPOSE:To obtain a power supply control circuit in which set is actuated positively upon turn ON of a main switch by judging the state of the main switch and the output of a memory read out circuit and then controlling a relay. CONSTITUTION:Upon turning a power switch ON, a memory read out circuit functions at first to read out the content of a nonvolatile memory 4. A judging circuit 6 then reads out the state of a main switch 1 and if the main switch 1 is turned ON, a transistor 3 is driven according to the state of the output from the memory read out circuit 5 and thereby a relay 2 is driven to actuate the set. If the main switch 1 is turned OFF, the transistor 3 is not driven even if the output from the memory read out circuit 5 is turned ON and thereby the set is not actuated. Upon state transition of the main switch 1 from OFF to ON, the transistor 3 is driven and thereby the relay 2 is driven to actuate the set regardless of the output from the memory read out circuit 5. |
