Bar code digitizer including a voltage comparator
作者： Raymond J. Boyd
DOI:
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摘要: A digitizer for a barcode scanner includes an amplifier and comparator. The receives feedback signal differentiated return on first port, reference voltage second port. Based difference between voltages the ports, outputs output signal, which is limited maximum value minimum value. delayed in phase, phase-delayed input to port of comparator, while undelayed comparison ports having one obtained.
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