[sdiy] Op Amp Stuff

[Matthew Smith]

Hi Folks

With all the talk about op amps and analogue computers, I thought that I 
should point out this little gem of a document to anyone who doesn't 
have it:

The National Op Amp Circuit Collection

http://www.national.com/an/AN/AN-31.pdf

Just printed it off and bound if for myself yesterday.  For those 
interested in analogue computing, look at the last pages.  You too can 
calculate logs with a couple of op amps and handful of passives!

Cheers

M

-- 
Matthew Smith
Smiffytech - Technology Consulting & Web Application Development
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