公开(公告)号：US20100231048A1

公开(公告)日：2010-09-16

申请号：US12477768

申请日：2009-06-03

申请人： SHI-TAO CHEN ,  SHENG-CHUNG HUANG ,  HSIANG-JUI HUNG ,  DA-WEI JIN ,  LEI YANG ,  YONG-XIAN ZHAO

发明人： SHI-TAO CHEN ,  SHENG-CHUNG HUANG ,  HSIANG-JUI HUNG ,  DA-WEI JIN ,  LEI YANG ,  YONG-XIAN ZHAO

IPC分类号： H02J9/06

CPC分类号： H02J9/06 ,  H02J2009/068 ,  Y10T307/615 ,  Y10T307/724

摘要： A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit.

摘要翻译： 电源切换电路包括主源输入端子，辅助源极输入端子，控制电路，第一开关，第二开关和输出端子。 控制电路连接到主源输入端子和辅助源输入端子。 第一个开关连接到主源输入端子和控制电路。 第二开关连接到辅助源输入端子和控制电路。 输出端子连接到第一开关和第二开关。 当主源输入端子处于高电平时，辅助电源输入端保持高电平，第一开关导通，第二开关由控制电路断开。