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16th April 2008, 11:10 AM
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diyAudio Member
Join Date: Dec 2006
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nullator/norator amplifier theory
back in the 70's or 80's i had a deck of 3x5 printed cards (i think from national semiconductor or analog devices) that described NULLATOR/NORATOR theory. it's a simplification of op amp theory using a linked pair of devices called nullators and norators. the nullator always wants to see zero voltage across it, and the norator always does what it must to meet that condition. anybody got a clue where those cards came from, and if they're still available?
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