the circuit of the chickling hatching announcer(2)

Published:2011/6/28 6:59:00 Author:Ariel Wang | Keyword: chickling hatching, announcer | From:SeekIC

BM is as the audio sensor .It used to detect if there is any chickling hatching from the eggs.When the sound signal is not detected by BM.The mono-stable delay circuit is at the steady state.The pin-3 of IC outputs low level.K is released.The buzzer HA doesn't give a sound.When there is any chickling hatching from the eggs in the incubator.BM will convert the detected sound of the chickling into the electric signal.The signal is amplified by V1 and V2.Then it generates the triggering signal.The mono-stable trigger circuit is triggered to turn over.It turns to transient stability from steady state.The pin-3 of IC outputs high level from low level.K is conducted to pull in.The normally open contacts are connected.The buzzer HA gives out alarm sound.It informs the worker there are chicklings hatching from the eggs.



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