Hello Prahlad,

>I will be very thankfull if someone can give me a >link/pointer to single supply precission full wave >rectifier using easily available opamps such as TL082 >etc.

I have a proven precision rectifier (it is working in some 200+ UPS)circuit, based on LM324 but uses negative supplies, unfortuately I dont know(at this time) how to attach images with this post.

This circuit is from the following book,
"IC Op-Amp Cook Book - III edition " by Walter G. Jung.page No.237.

I got this book in a computer book shop in Bangalore, I think you should be able to easily locate it in Mumbai.

In a new product, I am now trying a precision rectifier for a current tranformer, from the same book page No.251. this is a single supply based circuit based on an LM358, this appears similar to the Burr Brown application you have shown in a previous post.
I wired a ciruit, scoped it and found to be satifactory.

If you are not able to locate the book (circuit)let me know.I do recommend this book, it has a lot of practical information.

Regards,
John.