The measuring infinitesimal displacement with optical emission components

Published:2012/8/15 22:49:00 Author:Ecco | Keyword: measuring , infinitesimal displacement , optical emission components | From:SeekIC

The 555 time-base circuit in the figure can generate oscillation signal, and it is added to the bistable multi -vibrator 4538 by photoconductive light-emitting diode and phototransistor, then it is shaped and output. Once there is a slight displacement makes the reflected light intensity change, the multivibrator will flip, then output signal UA changes, therefore the small displacement can be detected.



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