Using the power switch integrated circuit level one controlled circuit sink type

  
As a result of the power switch integrated circuit A, it has a simple circuit, the sensitivity is high, working and reliable. It belongs to the people filling liquid level auto
Using the power switch integrated circuit level one controlled circuit sink type - schematic

matic control circuits. When the water level in the following electrode B, A 2 feet low (ov), A is turned on, 4 feet low (Ov), pull the relay KA, KM pull, pump up and running, the water tank water; when the water level rose to electrodes a, a 2 feet high ( 1.5V), a cutoff, KA and KM release, the pump stops irrigation.




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