This paper presents a way to reduce the standby power consumption of an automatic door system in the standby state. When an automatic door system is closed does not mean that it is not consuming electric power. Although it is closed, it still consumes 3 to 5 W of so-called standby power consumption when the system is connected to ac power. In this design the automatic door system consumes 50 mW in the standby state. A more effective circuit design for the automatic door system is proposed to reduce the standby power consumption, which would not affect the function quality.
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