Figure 4: Frequency dependence of the rectified d.c. voltage for a rectifier with an organic diode ... set to 1 MΩ. The HF supply voltage was provided by a HP 8116A pulse/function generator.

fast recovery rectifier diode with specified Cj of 300pF and Trr of 200ns The mystery DUT The time scale of 100ns/div is constant for all images for ease of comparison. Starting with a 1N4002, the ...

And here it is, modelled using LTSpice. It is the same circuit as the classic simple precision rectifier (set to pass the negative half-sine), but with the non-inverting input of the op-amp connected ...