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Analog Reflectance Sensor

This reflectance sensor carries an infrared LED and phototransistor pair. The phototransistor is connected to a pull-up resistor to form a voltage divider that produces an analog voltage output between 0V and +5V as a function of the reflected IR.

08-00030071
Company: Microbot
Made in: Italy
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2.50
Without VAT 2.02
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DESCRIPTION

This reflectance sensor carries an infrared LED and phototransistor pair. The phototransistor is connected to a pull-up resistor to form a voltage divider that produces an analog voltage output between 0V and +5V as a function of the reflected IR. Lower output voltage is an indication of greater reflection.

The LED current-limiting resistor is set to deliver approximately 20mA. The current requirement can be met by some microcontroller I/O lines, allowing the sensor to be powered up and down through an I/O line to conserve power.

Because of its small size, multiple units can easily be arranged to fit various applications such as line following robots and proximity/edge detection.

SPECIFICATIONS

Sensor Type:
  • Infrared
Typical Input Voltage:
  • 5VDC
Oparating Current:
20mA
Interface:
  • Analog
Communication Protocol:
  • Without

DOCUMENTS

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