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Purpose of C1 and C2
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mcoteca  
#1 Posted : Wednesday, May 16, 2012 11:46:21 PM(UTC)
mcoteca

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What is the purpose of C1 and C2?

Also, is there an obvious way to AC couple the input?

Thank you.
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Brian Donegan  
#2 Posted : Friday, May 18, 2012 3:44:45 PM(UTC)
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C1 and C2 (220pf) are for stability in the feedback loop.
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Russ White  
#3 Posted : Sunday, May 20, 2012 11:19:55 PM(UTC)
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You can AC couple simply by adding series cap to the hot input(s).

Remember for SE you must short -IN to IG.

For balanced use a cap at each input.
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