the circuit of the automatic anti-frosting controller for crops(1)

Published:2011/6/29 0:03:00 Author:Ariel Wang | Keyword: automatic, anti-frosting , controller, crops | From:SeekIC

When the atmospheric temperature is higher than +1℃,the pin-2 of IC1 outputs the voltage lower than 3V.K is released.The high voltage ignition circuit stops working.When the temperature goes down an the condition of frost is formed,the resistence of RT is increased.The voltage of IC1's pin-6 is higher than 6V.The pin-3 outputs high level.K is conducted to pull in.The normally open contacts are connected.The high voltage ignition is conducted to work.It generates near 10000V DC voltage between electrodes of A and B.It lights the gunpowder and gasoline.The smoking material is infamed.



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