Grating circuit with Schmitt Trigger

Published:2012/9/27 21:25:00 Author:Ecco | Keyword: Grating , Schmitt Trigger | From:SeekIC

The FCL101 in circuit is a threshold switch (Schmitt trigger), when the illumination changes arbitrarily and slowly, the flip - flop's output terminal Q occurs step change. When there is lighting, the Q end is in low level (threshold is about 250lx ), and it is shown in Figure a. If it is connected like Figure b, the Q terminal is in high level when there is lighting ( threshold value approximately 100lx. In the circuit shown in FIG c, Q-side is in lowlevel (threshold value is approximately 1600lx ).



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