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.

Some HP monitors and laptops, such as the EliteBook, feature an ambient light sensor. This sensor detects the light level of the environment and adjusts the screen's brightness accordingly. If you ...

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The built-in ambient light sensor in some Asus laptops detects the light level in an area and automatically adjusts the screen's brightness. But if you're giving a presentation or trying to conserve ...