It uses a very small photodiode, and draws so little power it’s perfect for projects with the smallest power budgets. The detector circuit uses a miniature solar cell and a JFET wired up in a ...

When particles, such as smoke, enter the detector, the photodiode captures the scattered light generated ... The aspirating ...

A group of South Korean researchers has developed an intelligent fire detection technology that drastically reduces the false alarm incidents, which go off in the absence of a real fire, and is on the ...

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 ...