The secret sauce is in component selection and tuning. Opengeiger uses the BPW34 diode because it is relatively common and has a large surface area, but also because it has a very low capacitance ...

Energy band diagram of pn junction under forward bias, Continuity equation, Boundary conditions, Ideal diode equation, Long- and short-base diodes, Recombination and generation in the depletion region ...

Thermal diodes provide a useful means for monitoring junction temperature on die and are typically independently powered from the rest of the SoC. They are especially useful for monitoring changes in ...