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[Moved] transfer function op amp feedback circuit

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Leonardo Callegaro

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Hello
Do you know how is the transfer function of the system in the picture attached if Vref is the input? and Vo the output?
Thanks

feedback_system.jpg
 

Barry - did you swap the role of Z1 and Z2?

- - - Updated - - -

More than that - no G(s) in the numerator?

I think, the correct transfer function is:

Vo/Vref=G(s)*(1+Z2/Z1)/(1+G(s)*Z2/Z1)
 

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