At 03:25 AM 09/08/2012, you wrote:


>The OA which do the sum can do an x10 sum as well.
>The repeater after the 4K7-500-5k1 may dissapear if the resistor at
>the noninverting input is 10x greater than the impedance of resistor
>network above.

Umm.. if a 10% gain error is acceptable...


--=20
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