Bar code position identifying device
The utility model relates to a bar code position identifying device, which comprises current limiting resistors, a potentiometer, a pull-up resistor, a photoelectric geminate transistor and an operation amplifier. Each of a luminescence portion and a reflected light reception portion of the photoele...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The utility model relates to a bar code position identifying device, which comprises current limiting resistors, a potentiometer, a pull-up resistor, a photoelectric geminate transistor and an operation amplifier. Each of a luminescence portion and a reflected light reception portion of the photoelectric geminate transistor is connected with one current limiting resistor in series, one corresponding terminal of the reflected light reception portion of the photoelectric geminate transistor is connected with an in-phase end of the operation amplifier, another terminal of reflected light reception portion of the photoelectric geminate transistor is connected with a grounding pin of the operation amplifier and connected with the cathode of a dc +5V power supply, an anti-phase end of the operation amplifier is connected with the anode of the +5V power supply via the potentiometer, and the pull-up resistor is connected with the cathode of the power supply and the output end of the operation amplifier respectively. |
|---|