The automatic for help alarm circuit

Published:2011/6/27 21:07:00 Author:Borg | Keyword: for help, alarm, automatic | From:SeekIC

In the figure is the automatic for help alarm circuit. The circuit composes of the music integrated circuit IC(KD-9562), regulated pipe DW(2CW13), mercury switch, transistor, sliding rheostat W and the power supply, etc. It can be packaged in a plastic box and then put in the pocket, or fixed in the cane. When the person is erected, the mercury switch is off, the power supply is cut off, the circuit is not working and the music integrated circuit IC is silent. When the person is banding down (the alarm in the pocket) or the cane is falling on the ground, the mercury switch is closed.



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