the music hypnosis

Published:2011/8/24 0:08:00 Author:Ariel Wang | Keyword: music, hypnosis | From:SeekIC

When the switch button SB gets through,C1 is charging.VT1 and VT2 are conducted.When SB is disconnected,VT1 and VT2 could stay conducted as C1 discharges to VT1 by RP1 and R1.VT3 is conducted because it gains forward biased current from polar c and e of VT2 through diode VD.IC1 works.The pin③ outputs music signal.The signal is amplified by VT4,then it drives the horn to give out a sound.The horn will play the music on and on in certain time as the pin② of IC1's trigger end connects to the positive electrode.In this way,it reaches the goal of hypnosis.The playing speed is adjusted by RP3.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Automotive_Circuit/the_music_hypnosis.html

Print this Page | Comments | Reading(3)