design square rooter

[kavhra]

Hello ,I have designed the square rooter which is in square rooter word file, but two inputs of op-amp aren't equal respect to negative feedback as mentioned and I receive the negative output from the circuit. Can any one help me.
Thanks

 

[danadakk]

The image blown up is totally out of focus.

Try reposting/saving again. And look at result until ist large/clear/in focus.


Regards, Dana.

 

[dick_freebird]

Would you use an analog multiplier doing Vin*Vin, as feedback
against Vin, taking sqrt(Vin) off the op amp output?

 

[KlausST]

Hi,

Check whether
* square root is essential (often it can be replaced)
* you can use digital square root (more precise)

Klaus

 

[D.A.(Tony)Stewart]

Normally I would 1st consider a square-law device with negative feedback to give a square root, output but only one polarity. Do you know how to define your specs and tolerances errors?