The Lumen Maintenance Photocell (LMPC) is a sensor that’s attached to a wall that reads the amount of light in an area, and relays the information to a control unit that can make adjustments according ...

This Circuit can compare the Light level in an area. It uses a PN Photodiode as the light sensor and IC CA3140 as voltage comparator. The circuit is ideal as the front end of burglar alarm circuits.

ALSs (ambient-light sensors) have been around for years, but they are now seeing increased use due to the success of smartphones, such as Apple’s iPhone. The iPhone uses an ALS to reduce power demands ...

This file type includes high-resolution graphics and schematics when applicable. The purpose of an ambient light sensor (ALS) is to allow electronic systems to “see” light like a human eye. The ...