Helmets with Electronic Hearing Aids

Published:2011/7/10 23:30:00 Author:Felicity | Keyword: Helmets, Electronic Hearing Aids, | From:SeekIC

When the motorcycle drivers wear their helmets their hearing will be limited and it is very dangerous. But if the drivers wearthis kind ofhelmets with electronic hearing aids their hearing will be improved and the accidents will be reduced. Work of the circuit Turn on the power switch S and VL will be lightened. Then the machine is in work. BL1 and BL2 turn the sound singnal they have collected into electronic singnal and transit the singnal to V's base through C1. The singnal will drive BL1 and BL2 to make sound after being preamplified by V, volume controlled by RP and power amplified by IC.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Electrical_Equipment_Circuit/Other_circuit/Helmets_with_Electronic_Hearing_Aids.html

Print this Page | Comments | Reading(3)