Hello,

I understand how to evaluate several op amp circuits now namely, non-inv, Inv, diff etc... , but today I have come across an untypical op amp configuration with only the rf resistor? Please view attachment.

At first I thought it looked simple but I was wrong. My question is, how is one supposed to calculate rf when all we know is that Vrf is 11 Vdc and that there is a gain of 10 by using the following gain formula:

G = vo/vi = 10/1

Thank you for your help

24v

I understand how to evaluate several op amp circuits now namely, non-inv, Inv, diff etc... , but today I have come across an untypical op amp configuration with only the rf resistor? Please view attachment.

At first I thought it looked simple but I was wrong. My question is, how is one supposed to calculate rf when all we know is that Vrf is 11 Vdc and that there is a gain of 10 by using the following gain formula:

G = vo/vi = 10/1

Thank you for your help

24v

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