The sickroom patient alarm screen circuit

Published:2011/6/10 1:00:00 Author:qqtang | Keyword: sickroom, alarm screen circuit | From:SeekIC

In the figure is a sickroom patient alarm screen circuit, whose acousto-optic terminal is installed in the nurse duty room. 1 bit number is displayed, and every 3 beds share a number, so a total of 27 patients are covered, which can meet the need of a small hospital. This circuit is only made of a common micro-power CMOS circuit IC1(4511) and IC2(4001), and a ding-dong door bell chip IC3(KD-1543). It is not only low-cost, which consumes only several microampere of power in waiting state, it is powered with two No.5 batteries (6v), but also doesn't need to install a power supply switch, so the users don't need to worry about about the power failure of the grid.



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