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Re: gEDA-user: furnace controller I/O port again



On Nov 2, 2006, at 8:15 PM, Bob Paddock wrote:
I'll look into it.  The thing about op amps is that they're cheap and
tiny.

Which frequently gets people into trouble when they try to use Op-Amps as Comparators:
...
TI:
Op Amps and Comparators - Don't Confuse Them

Operational amplifiers (op amps) and comparators look similar; they even have very similar schematic symbols.
This leads a lot of designers to think they are interchangeable. There is a strong temptation to use a spare section
of a multiple op amp package as a comparator to save money. This application note will explain why designers should not do this.


http://encon.fke.utm.my/nikd/latest/sloa067.pdf
Download .pdf (sloa067.pdf, 150 Kbytes)"

Not to butt in, but...wow, that is a VERY informative article...Thanks for sending that URL!


              -Dave

--
Dave McGuire
Cape Coral, FL





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