The photodiode and detector control the capacitive discharge ignition system for the engine. The photodiode emits light at a single frequency. When this light is reflected from a coupon attached to ...

A G-M tube is not the only game in town though, and even the humble photodiode can be pressed into service. [Robert] gives us a good example, with a self-contained radiation detector head that ...

The basic concept of the detector is to build a light-tight test chamber that can ... phosphorescent compounds within. A high-speed photodiode is then used to detect the afterglow, which can ...

For the existing photoelectric smoke detector, an infrared light source and a light-sensing photodiode are placed in opposite directions inside the detector. When particles, such as smoke ...

For the existing photoelectric smoke detector, an infrared light source and a light-sensing photodiode are placed in opposite directions inside the detector. When particles, such as smoke ...