发明名称 |
Over-discharge protection circuit. |
摘要 |
<p>An over-discharge protection circuit included in a charge circuit in a portable apparatus having a portable portion and a body, the portable portion and body being interconnected by two charging terminals of the body and two terminals of the portable portion when the portable portion is placed on the body; the over-discharge protection circuit comprises: first resistor connected across a battery charger for detecting a discharge current when a power source of the battery charger is accidentally turned OFF during a charge of the battery; a switching circuit connected between a load and a battery for disconnecting the load and battery when the power source of the battery charger is accidentally turned OFF during a charge of the battery; a switch control circuit connected to the switching circuit through a third resistor for turning the switching circuit ON/OFF; a second resistor connected between the switching circuit and the switch control circuit for controlling a flow of a charge current to the switch control circuit; and a diode connected between the switch control circuit and the first resistor for allowing a flow of the discharge current to the first resistor when the power source of the battery charger is accidentally turned OFF during a charge of the battery.</p> |
申请公布号 |
EP0319020(A2) |
申请公布日期 |
1989.06.07 |
申请号 |
EP19880120149 |
申请日期 |
1988.12.02 |
申请人 |
FUJITSU LIMITED |
发明人 |
NAKANISHI, AKIO;IKEGAYA, KEN-ICHI;NAITO, TAKAO;SEJIMA, YUKIO;MATSUSHIMA, KOJI |
分类号 |
H02H7/18;H02J7/00 |
主分类号 |
H02H7/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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