Circuit - LIGHT DETECTORS WITH AMIBIENT LIGHT COMPENSATION - Circuits designed by David A. Johnson, P.E.

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Circuits designed by David Johnson, P.E.

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Last Updated on: 06/17/2009 03:29:14 PM

Freespace or Light Beam Communication
Light Detectors or Optical Sensors

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LIGHT DETECTORS WITH AMIBIENT LIGHT COMPENSATION
These circuits were taken from a few application notes on infrared remote control devices. They use a current compensation method to separate the modulated light pulses from ambient light. They appear to have limited bandwidth and may only work at the 30KHz to 50KHz frequencies often used by TV and VCR remotes. I have not yet tested the circuits.

Freespace or Light Beam Communication Light Detectors or Optical Sensors

Master Schematic Category List - David A. Johnson, P.E.