Reflective Object Sensor- Infra Red Optical Proximity Switch Using PLL LM567

Reflective Object Sensor- Optical Proximity Switch Using PLL LM567

The simple circuit is based on LM567 PLL IC and optical sensor QRD1114 from Fairchild semiconductor. The QRD11114 reflective sensor consists of an infrared emitting diode and an NPN silicon photo Darlington mounted side by side in a black plastic housing. The on-axis radiation of the emitter and the on-axis response of the detector are both perpendicular to the face of the QRD1113/14. The photo Darlington responds to radiation emitted from the diode only when a reflective object or surface is in the field of view of the detector.

  • Supply 5V DC
  • Output LED
  • Output TTL 5V
  • Sensing Distance Up to 15MM
  • Sensing Distance Adjustable