| タイトル | Full-charge indicator for battery chargers |
| 本文（外部サイト） | http://hdl.handle.net/2060/20080005877 |
| 著者（英） | Cole, Steven W. |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 1983-07-19 |
| 言語 | eng |
| 内容記述 | A full-charge indicator for battery chargers, includes a transistor which is in a conductive state as long as charging current to the battery is not less than a level which indicates that the battery did not reach full charge. When the battery reaches full charge, a voltage drop in a resistor in the charging current path is not sufficient to maintain the transistor in a conducting state, and therefore it is switched off. When this occurs an LED is turned on, to indicate a full charge state of the battery. A photocoupler together with a photocoupler transistor are included. When the transistor is off, the photocoupler activates the photocoupler transistor to shunt out a resistor, thereby reducing the charging current to the battery to a float charging current and prevent the battery from being overcharged and damaged. |
| NASA分類 | Electronics and Electrical Engineering |
| 権利 | No Copyright |
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