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Dividing one voltage by another using an op amp?

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livingjw(at)earthlink.net
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Posted: Mon Sep 04, 2006 8:01 am Post subject: Dividing one voltage by another using an op amp?

Bob, All,



   I seem to remember from my analog computer class (yeh, I'm that old) that

you can divide using an op amp. Can anyone point me a circuit which does

this? Thanks. One of my students built an AoA indicator a couple of years

ago with a cheap differential pressure chip, but he brought the signal out

and into a digital computer that we already had installed on the airplane

for storing flight data. He then divided it by the dynamic pressure using

software. It worked great. I thought it would be fun to see how simple it

could be done using analog circuits. These pressure measuring chips are just

a couple of dollars and you would need two of them. One differential for the

angle and one absolute pressure chip for the dynamic pressure.

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