the circuit of fish breeding oxygen gaining controller

Published:2011/6/17 6:53:00 Author:Ariel Wang | Keyword: fish breeding, oxygen gaining, controller | From:SeekIC

+24V voltage charges C2 by normally-closed contact R2 and K1.When the voltage of C2 reaches a certain value,transistor V1 is conducted.Relay K1 is pulled in.The normally-open contact K1-2 get through.+24V voltage charges C3 by the contacts of R3 and K1-2.At the same time,the normally-closed contact K1-1 is disconnected.C2 stops charging. The voltage of C2 discharges by R2.V1 stays conducted.K1 stays pull-in.When the voltage of C3 reaches a certain level,V2 is conducted.K2 pulls in.The normally-closed contact K2-1 is disconnected.It cuts off discharge circuit of C2.V1 stops.K1 is released.C2 starts charging again.



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