| 摘要 |
PURPOSE:To enable efficient charge-and-discharge to be carried out by installing a central processing unit, two memories, and a register which stores consumption current value or the like, and processing the charge-and-discharge amount of a secondary battery. CONSTITUTION:A power source circuit 1, which is connected to an alternating power source AC and supplies d.c. voltage, is connected to a detector 2 which detects the voltage of the circuit 1. The output of the circuit 1 is passed through a switch 3 and is introduced into a constant-current circuit 4, through which a secondary battery 5 is charged. The terminal voltage of the secondary battery 5 is introduced into a regulator 6. The output voltage of the regulator 6 is supplied to a clock device 9, a random access memory 10 and a switch 7. The output voltage passed through the switch 7 is introduced into a central processing unit 8. A read only memory 11 is connected to the unit 8, and an indicator 12 is controlled by the unit 8, and the whole constitutes an electronic apparatus fitted with the secondary battery 5. |
