公开(公告)号：US20090236914A1

公开(公告)日：2009-09-24

申请号：US12076455

申请日：2008-03-19

Applicant: Huang-Chu LIU ,  Chun-Ta WU

Inventor： Huang-Chu LIU ,  Chun-Ta WU

IPC: H02J9/00 ,  H02J7/00

CPC classification number: H02J9/061 ,  G06F1/263 ,  Y10T307/50 ,  Y10T307/615 ,  Y10T307/62 ,  Y10T307/625 ,  Y10T307/642 ,  Y10T307/647 ,  Y10T307/653 ,  Y10T307/685 ,  Y10T307/696 ,  Y10T307/724 ,  Y10T307/729

Abstract: A selectable backup power supply device for providing power to a real time clock (RTC) and a memory unit is disclosed. The device includes a backup battery, a first power outputting unit and a second power outputting unit, wherein the backup battery outputs a backup voltage, the first power outputting unit is connected to the backup battery and the RTC for receiving the backup voltage and outputting a first supply voltage to the RTC, and the second power outputting unit is connected to the backup battery and the memory unit, for receiving the backup voltage and, in accordance with a selection signal, outputting a second supply voltage to the memory unit or stopping the output of the second supply voltage.

Abstract translation: 公开了一种用于向实时时钟（RTC）和存储器单元提供电力的可选备用电源装置。 该装置包括备用电池，第一电力输出单元和第二电力输出单元，其中备用电池输出备用电压，第一电力输出单元连接到备用电池和用于接收备用电压的RTC，并输出 向RTC提供第一电源电压，并且第二电力输出单元连接到备用电池和存储单元，用于接收备用电压，并且根据选择信号将第二电源电压输出到存储器单元或停止 输出第二电源电压。