| 摘要 |
PURPOSE:To perform accurate charge recording without exerting any influence of power consumption for the recording upon a battery, by counting charging duration by a counter through a timer, and the frequency of charge by a counter which responds to a battery voltage while a charging period is detected, and performing power-on control through a relay. CONSTITUTION:When a charge CHG is set to a battery BAT, the relay RY1 is energized by a switch MS1 and a transistor (TR) 4 to power-on a charge recorder. Then, a TR9 is controlled by the high-level output in specified-intervals of the timer IC6 which is set and reset through a comparator IC4 while the charge period wherein the charging voltage by an operational amplifier IC5 and a comparator IC3 exceeds a specific value is detected, and the counter T2 counts the charge time. Similarly, the counter T1 driven once the voltage of the battery BAT reaches 80% of the charging voltage counts the frequency of charge, and is powered off by the TR4 which turns on once the charging is completed. Consequently, the accurate charge recording is carried out without exerting any influence of the power consumption upon the battery. |
