#### gaspode42

##### Member

Hi All

I have been trying to get to grips with op-amp design using the attached 'tutorial'.

I never was very goos with equations so I am struggling. I am stuck on page 4-14.

Cheating (by using a spreadsheet) I can solve the simultaneous equation and get the correct values for the slope and intercept. However we now get to:

m = 10 = (Rf + Rg) ÷ Rg

This they have solved to be Rf = 9Rg

Can somebody please be kind enough to explain how this is reached.

Thanks in advance,

Rupert

I have been trying to get to grips with op-amp design using the attached 'tutorial'.

I never was very goos with equations so I am struggling. I am stuck on page 4-14.

Cheating (by using a spreadsheet) I can solve the simultaneous equation and get the correct values for the slope and intercept. However we now get to:

m = 10 = (Rf + Rg) ÷ Rg

This they have solved to be Rf = 9Rg

Can somebody please be kind enough to explain how this is reached.

Thanks in advance,

Rupert

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