A.C. Time Switch Controller Circuit

Published:2011/7/21 2:02:00 Author:Joyce | Keyword: A.C., Time Switch , Controller | From:SeekIC

As shown in the figure, the controller includes a depressurization and rectification relay, a monostable timing relay and an ac solid-state relay. The monostable time circuit is composed of 555, R2, RP1, and C4. Press AN, feet 3 of 555 will display a high level to dredge the ac output end of the ac solid-state relay and connect the load, at this time the timing will start .The timing time, namely the stable time of monostability is: td = 1.1 RP1C4.The longest timing time according to the parameters in the figure is about 30 minutes, which can be regulated by adjusting RP1.



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