Electric Medical Attracting Controlling Circuit (the 2nd)

Published:2011/6/25 5:20:00 Author:Felicity | Keyword: Electric Medical Attracting Controlling Circuit (the 2nd) | From:SeekIC

Work of the circuit The circuit consists of power circuit, negative pressure testing circuit, bistable state circuit, working condition indicating circuit and controlling execution circuit. (It is showed in picture 9-44.) Turn on the power switch S2. The 220V AC voltage supplies +12V working power to IC. When S2 is just turned on, the gas in the negative pressure bottle is of normal state. The internal outputting circuit of KP is closed and VL1 is lightened. When the negative pressure reaches to a certain value, M stops working. At the same time VL2 is lightened and VL1 is turned off. S1 is the manual button. Press S1 and M starts working. Relax S1 and M stops working.



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