4-hour AC Power Supply Timer Circuit

Published:2011/5/18 9:39:00 Author:Joyce | Keyword: 4-hour, AC Power Supply , Timer | From:SeekIC

As shown in the figure is a 4-hour AC power supply timer circuit. In this circuit, BH4024 is a 7-level binary system counter/frequency divider, and 555 is a timebase circuit. AN is a timing touch button. Everytime you press AN once, it could output four-hour 220V AC power supply, after 4 hours,it will outage. This circuit can be used in working time whose morning and afternoon is separated by4-hour as an unit.



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