MathGeek
Member level 3
Hello,
This is a corollary thread from the previous one I made.
I am making a small (mm scale) capacitive encoder, and capacitance will likely be less than 1 pF. I would like to measure with at least 0.1 pF resolution (ideally, something like 0.05pF). This will be all embedded on a very small robot, so resource is limited.
Any suggestsion? One obvious way is to use RC, while the other one is to use sine wave input and measure the phase (which I am not too sure how to do).
Best Regards.
This is a corollary thread from the previous one I made.
I am making a small (mm scale) capacitive encoder, and capacitance will likely be less than 1 pF. I would like to measure with at least 0.1 pF resolution (ideally, something like 0.05pF). This will be all embedded on a very small robot, so resource is limited.
Any suggestsion? One obvious way is to use RC, while the other one is to use sine wave input and measure the phase (which I am not too sure how to do).
Best Regards.