the circuit of the humidity controller(2)

Published:2011/6/22 7:14:00 Author:Ariel Wang | Keyword: humidity , controller | From:SeekIC

The resistence of RS changes when the humidity changes.When the environment humidity level decreases,the resistence of RS increases.The voltage of VS's base electrode increases.When the voltage of V3's base electrode is beyond 0.7V,V3 is conducted.V2 and V1 are conducted.V4 is stopped.K1 is conducted to pull in.The normally open contacts are connected.The humidifying equipment is conducted to work.At the same time,VI.1 is lighted.It indicates the humidifying equipment is working.When the humidity level increases,the resistence of RS decreases.The voltage of VS's base electrode decreases.When the voltage of Y3's base electrode is lower than 0.7V,V3 stopped.V4 is conducted.K2 is conducted to pull in.The normally open contacts are connected.The drying equipment is conducted to work.At the same time VL2 is lighted.V1 and V2 are stopped.K1 is released.



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