Electronic Design

Simple Ambient Light Sensor Controls White LED Driver

This idea describes a white- LED (WLED) driver circuit controlled by a simple ambient light sensor (ALS). A typical application would be a brightness control for cell-phone backlighting. On a very ...
EDN

Digital 16-bit Ambient Light Sensor IC

The BH1730FVC is a digital Ambient Light Sensor IC for I2C bus interface. This IC is the most suitable to obtain the ambient light data for adjusting LCD backlight power of TV, mobile phone. It is ...
Electronic Design

Simple Light Sensor Circuit Features High Dynamic Range

Ambient light is increasingly being used as a source of energy. To help designers of such systems, this circuit accurately measures ambient light intensity over four decades of measurement. The design ...
EDN

LED senses and displays ambient-light intensity

In addition to their customary roles as indicators and illuminators, modern LEDs can also serve as photovoltaic detectors (reference 1 and reference 2). Simply connecting a red LED to a multimeter and ...