To all,

Dave put me on to an old book he seems to like a lot, which includes 
an extensive collection of op-amp circuits, even including things 
like negative-impedance designs.  It was written in the days of 
analog computers where operational amplifier circuits were being used 
to generate models of electrical and mechanical systems.  Ever 
wondered why they are called "operational" amplifiers?  The answer is 
in the book.

Having been written at a time (1965) when op-amp circuits were being 
used as computers, it covers the fundamentals in considerable detail 
before it goes on to the fancy stuff, which is helpful for people 
like me.  It was originally published by long-gone Philbrick Corp. 
and even describes some vacuum-tube op amps.  Now it is archived on 
the Analog Devices Web site.

Be aware that it's pretty big, about 75MB.

http://www.analog.com/library/analogdialogue/archives/philbrick/computing_amplifiers.pdf

Regards,
Brett


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