Bell of the Bicycle (the 2nd)

Published:2011/5/20 1:42:00 Author:Felicity | Keyword: Bell of the Bicycle (the 2nd) | From:SeekIC

Work of the circuit The circuit consists of voice circuit and voice-frequency amplifying circuit (It is showed in picture 7-168.). The +12V voltage which comes from storage battery separates into two parts. One of them supplies working power to IC2 while the other one supplies 3V DC voltage to IC1. Press button S IC1 begins to work and voice signal is outputted from its O/P. The signal drives BL make the voice “Please give way, thank you” after being amplified.



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