The sensor allows the pilot light to be automatically re-ignited if the flame is no longer present. The circuit is a surprisingly simple one, with a PNP transistor being turned on by the flame ...

Diodes has introduced to its range of Hall Effect sensor switches two low voltage Omnipolar parts that reduce power consumption in battery-powered, hand-held devices and simplify production processes.

Apple's patent application for "Organic light emitting diode having photodiodes" describes a setup that places photo sensors above, below, or in line with an OLED array to detect and compensate ...