| 摘要 |
PURPOSE:To prevent the erroneous operations of an electronic equipment due to voltage drop of a power supply caused by the drive of an electronic element in the electronic equipment. CONSTITUTION:An electrical element 106 is driven, or is not driven via a switch operation control circuit 101 and an electrical element drive circuit 105 by operating a switch 100. Then, a power supply selection circuit 103 is operated via the switch operation control circuit 101 by operating the switch 100 to select either a first power supply 104 or a second power supply 102 to be supplied to an electronic component 107. |
