File:Infrared-photogate-circuit-diagrams.png

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Infrared-photogate-circuit-diagrams.png ‎(400 × 400 pixels, file size: 7 KB, MIME type: image/png)

Symbolic diagrams for active-low and active-high photo-gates, used for marking the passage of objects between a light source and a phototransistor sensitive to that source. An NPN transistor is used to provide a clean signal for micro-controllers.

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current10:13, 9 May 2014Thumbnail for version as of 10:13, 9 May 2014400 × 400 (7 KB)Shawn (talk | contribs)Symbolic diagrams for active-low and active-high photo-gates, used for marking the passage of objects between a light source and a phototransistor sensitive to that source. An NPN transistor is used to provide a clean signal for micro-controllers.

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