Using Multiple Phototransistors

Published:2013/6/24 21:46:00 Author:muriel | Keyword: Using Multiple Phototransistors | From:SeekIC

More than one phototransitor can be connected to a single voltage comparator. This would allow transistors to be placed along a section of track to indicate when a train is anywhere in that section. As long as the train is long enough to cover two sensors the circuit will continuously detect the train.



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