| 摘要 |
PURPOSE:To prevent e.g. the mislighting of a stop lamp by interrupting the power supply after a lapse of time specified depending on a mode signal that goes off the switching operation from the one side mode to the other side when a load is regarded as a control circuit. CONSTITUTION:For instance, in a stop lamp, constant voltage +Vs is supplied from a power supply section 101 to a clock circuit 102, an interface circuit 103, a shift circuit 104 and a driver circuit 105. A control section as a load to the power supply section 101 is constituted by the clock circuit 102, interface circuit 103, shift circuit 104 and driver circuit 105. Suppose the load is regarded as a control circuit, the external power supply to this control circuit is interrupted after the disappearance of this mode signal after a lapse of a specified time based on a mode signal that goes off from the one side mode to the other side by the switching operation. |
