the circuit of fish breeding oxygen gaining controller（3）

Published:2011/6/26 9:08:00 Author:Ariel Wang | Keyword: fish breeding , oxygen gaining , controller | From:SeekIC

When S1 and S3 are disconnected,S2 and S4 are connected,the pin-1 of IC(the Q12 end) outputs low level,the pin-2 outputs high level.VT and V1 are conducted.K is conducted to pull in.The normally open contact is connected.The oxygen-producing device is conducted to work.At the same time,V2 is stopped.VL dies out.When the pin-1 and the pin-2 of IC output low level.The pin-3 outputs high level.VT and V1 are stopped.K is released.The normally open contact is disconneted.The oxygen-producing device is power-off.And it stopps working.



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