To ensure the reliability of the system,it is necessary to perform power on timing control to ensure that each functional circuit module is powered on in sequence. In order to avoid causing power on timing disorder,a power off delay start circuit based on 555 timer output is designed. This circuit has the advantages of low usage of components,controllable delay time,and controllable power output enabling pins. Compared with direct control of power output,it is safety,reliability,simple,and low cost.
关键词
555定时器/上电时序控制/掉电延迟启动
Key words
555 timer/power on timing control/power off delay start
维普
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