发明名称 |
POWER SUPPLY DEVICE AND PORTABLE ELECTRONIC EQUIPMENT |
摘要 |
<p>A power supply apparatus employs a unidirectional unit equipped with a diode, a bypass switch connected in parallel to the diode, and a controller which turns the bypass switch ON when a forward voltage appears in the diode in order to rectify or prevent the backflow of the power from a power generating unit built in portable electronic equipment of an arm-worn type or the like; it is able to eliminate almost all loss caused by the forward voltage at the time of power supply. The electromotive force of the power generating unit incorporated in arm-worn type electronic equipment ranges from almost the same level to about a few times the level of the forward voltage; hence, the use of the unidirectional unit enables rectifying efficiency to be markedly improved. <IMAGE></p> |
申请公布号 |
EP0891038(B1) |
申请公布日期 |
2006.01.11 |
申请号 |
EP19970911517 |
申请日期 |
1997.11.11 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
FUJISAWA, TERUHIKO;YABE, HIROSHI;SHINKAWA, OSAMU;KADOWAKI, TADAO |
分类号 |
H02M7/21;G04C10/00;G04G19/00;G04G99/00;H02M7/217;H02M7/219 |
主分类号 |
H02M7/21 |
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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