I am working on a project that uses a LED as a light source. I read that I can use another LED as a light sensor/detector but will probably need some amplification.
Here my question: there is something called "current to voltage converter" which involves an op-amp.
Is this electronic component something that takes an input current, like the one generated by the LED sensor, and produces an amplified corresponding voltage signal?
But doesn't a simple resistor convert a current into a voltage? Maybe the resistor does not provide amplification.
I guess most sensors produce a current signal output. Why couldn't we use a current amplifying circuit instead of a current to voltage converter? Is there such a thing?