the circuit of the granary full reminder for the combine harvester (1)

Published:2011/8/11 4:39:00 Author:Ariel Wang | Keyword: granary full reminder, combine harvester | From:SeekIC

When the granary is not full,V1 is conducted by the infrared light emitted by VL.V2 is stopped.The pin-2 of IC becomes high level.The pin-3 outputs low level.It is released.HL isn’t lighted.HA doesn’t give a sound.When the granary is full,the food in granary covers YL and VI.The resistence of VL is large.1 and 2 are conducted.The high level of IC’s pin-2 becomes low level. The monostable circuit turns over.The pin-3 of IC outputs high level.K is conducted to pull in.The normally open contacts are conducted.HL is lighted.HA gives out alarm sound.It tells the driver that the granary is full.



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