My last transimpedance photodetector

This receiver is designed to use for some devices like a microscope or astronomic telescope

I use that receiver with a simple reduction in the Russian production of photographic lens
dia72mm 300mm focal length
The original structure is still transimpedant receiver (photoconductive mode) "oboR design", which is slightly improved.
Has enhanced filtering for interference from power source.
I use 300megaohm feedback resistor.
Photodectector is from dismantling of old electronics (I don't know, do not remember). SiPIN High size 4mm^2 with very low noice

 

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