Square-Root op amp circuits

Moneer81

New Member
hey guys:

I am trying to design a circuit that finds the square root of a number. The way to do that is by building 3 circuits: one to find the log of a number, the other one to find the anti log, and the third one is a simple voltage divider.

you can easily prove that the output voltage will be the square root of your input voltage when these three circuits are combined. I am just wondering if any of you guys have tried this before, because I am facing some difficulties in building the log circuit and I am not sure how to get it to work.

Thanks.

Moneer.
 
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