| 摘要 |
PCT No. PCT/EP93/03135 Sec. 371 Date Jun. 6, 1995 Sec. 102(e) Date Jun. 6, 1995 PCT Filed Nov. 9, 1993 PCT Pub. No. WO94/14079 PCT Pub. Date Jun. 23, 1994A circuit arrangement for indicating the charge status of a batter in an electrical appliance includes a voltage comparator with hysteresis which detects the battery voltage, an oscillator driven by the voltage comparator, and an indicating device. The oscillator oscillates when the voltage is above a first threshold voltage and switches the indicating device to an active condition. The oscillator is blocked when the voltage is below a second threshold voltage and switches the indicated device to a passive condition.
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