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![]() IR sensorĪn IR sensor is an electronic device that detects IR radiation falling on it. The massive use of IR LEDs in remote controls and safety alarm systems has drastically reduced the pricing of IR diodes in the market. Infrared diodes have a package that is opaque to visible light but transparent to infrared. Modulation makes the signal from IR LED stand out above the noise. ![]() ![]() It is necessary to modulate the emission from IR diode to use it in electronic application to prevent spurious triggering. ![]() In order to fall into these holes, the electrons must shed energy in the form of photons, which produce light. Electric current is allowed to flow in only one direction in diodes. As the current flows, electrons fall from one part of the diode into holes on another part. An IR LED is a type of diode or simple semiconductor.
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