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help me regarding current booster of opamp

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rampadavala

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hello fnds
can you please to find the resistor values(r1,r2) in the following current booster. input (0-5Vdc) and output(0-30Vdc and 100ma)**broken link removed**
 
I guess you're talking about a non-inverting amplifier.

You want it to magnify the voltage 6 times. That means the feedback factor should be 1/6. So R1/(R1+R2) = 1/6

From nowhere, I select value for R1=10k. Then, R2 must be 50k to get a feedback factor at 1/6.

R1 will be below R2 in this case.
 
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