BUTTON_AND_BEAD_COUNTER

Published:2009/7/13 20:36:00 Author:May | From:SeekIC

Tiny objects passing before photodiode are counted by Schmitt trigger and four binary stages at up to 30 counts per second, with electromechanical counter readout.-E. J. Brach, Photocell Triggers Counting Circuit, Electronics,38:13,p74-75



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