precision rectifier

[patchell]

    You can build, I am pretty sure, a full wave rectifier with one op-amp, but,
I don't think it would qualify as a precision full wave rectifier (In my book,
precision rectifier means 0 volt forward drop).

    I always looked at it this way...this is what dual opamps are for.

    I just took a look in the "Bible" (Analog devices Nonlinear Circuits
handbook) and could only find two op-amp designs.

danial stocks wrote:

> Hi folks.. I've not seen any apps notes for this so I'm wondering if someone
> out there in diy land has an idea.. the problem: can you make a full wave
> precision rectifier with a single op amp? [natsemi only shows how to do it
> in 2]..
> Cheers,
> Dan
> ________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

--
 -Jim
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