Shopping & Style0 min ago
Answers
Only 1 answer
Best Answer
No best answer has yet been selected by edbenjohn. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.
It's hard to tell exactly what type of sensor you are talking about (from discrete (individual) parts, a whole unit or what?) As for discrete parts, for infrared, the two most common are photodiodes and phototransistors.
A photodiode produces a small voltage when light hits it and a phototransistor conducts current when light hits it. So, when light hits the diode, a small voltage is produced, which is amplified and then processed in some way. The transistor reacts to light by allowing current to flow and that current flow is amplified/detected and also processed in some way. The simplest way to process the current or voltage is to amplify it to a level that could be considered completely on or completely off (binary). The binary signal generated by the circuit could be used by a microcontroller, such as the one in your TV remote sensor.
Only 1 answer
Related Questions
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.