In order to help his friend prepare for a talk at DEFCON this weekend, [Craig] built an IR photodiode amplifier circuit ... the positive input and adds some diodes in the feedback loop to reduce ...

Opto Diode’s products include superior performance LEDs (in the visible spectrum), high-power infrared LEDs, silicon photodiodes, arrays & electro-optical assemblies. The company’s new IRD line of UV ...

What counts in the world of photodiodes is quantum efficiency, the number of photons that the diode converts into electrons.” This is not a silicon photodiode, but a thin-film tandem structure with a ...

A G-M tube is not the only game in town though, and even the humble photodiode ... the whole circuit is contained in a diecast box with a foil window to allow radiation to reach the diodes.