| 摘要 |
PURPOSE:To prevent an electronic equipment from the expansion of abnormality by detecting the abnormal interruption of power supply at the succeeding rise of the equipment and detecting the damage of a storage means in the equipment. CONSTITUTION:In an electronic computer system, an external storage means 2a and an internal storage means 2b are connected to a CPU 1 and commercial AC voltage to be exciting power is converted into a prescribed DC voltage and supplied through a plug 3, a breaker 4, an auxiliary power supply circuit 5, and a main power supply circuit 7. A contact point 8a of an operation power supply switch 8 is connected in parallel with a relay contact point (to be driven by a relay 9 of the circuit 7) of the circuit 5 and the ON/OFF state of the contact point 8a is detected by the CPU 1 based on the ON/OFF state of a contact point 8b interlocking with the contact point 8a. When abnormal interruption such as power failure is generated at the use of the equipment, the exciting power is interrupted while storing information corresponding to the ON state of the power supply circuit as it is. When the power supply circuit is turned on at the rise of the equipment, the abnormality of the storage means 2a is retrieved based on said abnormal interruption. |
