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/diy/ - Do It Yourself

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>> No.1936679 [View]
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1936679

>>1936668
Forgive the stupid question, but what's the advantage of having an op-amp?

Wouldn't any error from the potentiometer be multiplied by the op-amp? E.g. Pot has 1% error, gain of 2 on op-amp is now 2% error. Op-amp itself presumably has an error, e.g. 1% - so I'd have a 3% error.

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