公开(公告)号：US08417972B2

公开(公告)日：2013-04-09

申请号：US12762988

申请日：2010-04-19

Applicant: Yong-Hua Fan ,  Ching-Chung Lin

Inventor： Yong-Hua Fan ,  Ching-Chung Lin

IPC: G06F1/00 ,  G06F1/26 ,  G06F1/32

CPC classification number: G06F1/26

Abstract: A power supply control circuit used to control a power supply to supply a MCU includes a first transistor switch, a RC circuit, a power switch control circuit, and an input signal control circuit. When the power switch control circuit is grounded via the MCU, the RC circuit is discharged to ground and the first transistor switch is switched on, such that the power supply supplies power to the MCU. When the MCU outputs a control signal to the input signal control circuit, the RC circuit is discharged to ground and the first transistor switch is switched on, such that the power supply supplies power to the MCU. When the MCU stops outputting the control signal to the input signal control circuit, the RC circuit is charged and the first transistor switch is switched off, such that the power supply does not supply power to the MCU.

Abstract translation: 用于控制提供MCU的电源的电源控制电路包括第一晶体管开关，RC电路，电源开关控制电路和输入信号控制电路。 当电源开关控制电路通过MCU接地时，RC电路放电到地，第一个晶体管开关导通，使得电源向MCU供电。 当MCU向输入信号控制电路输出控制信号时，RC电路向地面放电，第一晶体管开关导通，使得电源向MCU供电。 当MCU停止向输入信号控制电路输出控制信号时，RC电路被充电，第一晶体管开关被关断，使得电源不向MCU供电。