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  • Fundamentals of the Infrared Physical Layer
    communication can be established through free space between two dissimilar devices. This document describes the fundamentals of the infrared physical layer, the IrDA standard and selecting the proper discrete emitter and photodiode components for circuit implementation.
  • Simplified Lux for Embedded and Micro Controllers
    The TSL2550 is designed for use with broad wavelength light sources and uses two photodiodes for deriving illuminance (i.e. lux). The first photodiode (Channel 0) is sensitive to both visible and infrared light, while the second photodiode (Channel 1) is sensitive primarily to infrared light
  • IR Remote Control Transmitter
    AN1064 IR Remote Control Transmitter receiver. The IR light then travels through the air and is Author: Tom Perme detected at the receiver by a photo-diode. The photo- John McFadden diode is often contained in a complete module which Microchip Technology Inc. demodulates the modulated signal
  • Switch Tips: Photointerrupter switches
    thermal constraints. Switches based on photointerrupters have no contacts, no lubricant, and only one spring. The switching action takes place by depressing a button that interrupts the optical path between an infrared LED and a photodiode or phototransistor. This provides a momentary "low

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