Agricultural Automatic Water Feeder (13)

Published:2011/5/22 20:30:00 Author:Sue | Keyword: Agricultural, Automatic, Water Feeder | From:SeekIC

When the level is lower than B, IC's 2 pin has high level and IC's inside trigger reverses. 3 pin outputs low level. V is connected and K is connected. M begins to work and feed water. When the level reaches b, IC's 2pin has a voltage of Vcc/2, the trigger remain what it is and M keeps on working. When the level reaches A, IC's 2 pin has low level and 3 pin output high level, V is disconnected and K is released. M stops working.



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