Obtain a equation from operational amplifiers

Thread Starter

Doppler2902

Joined Sep 15, 2020
37
Hi guys, I nedd to obtain the following equation from operational amplifiers:

1644620582519.png
So, what I thought is use two inverting operational amplifiers for get the gain and a voltage divider, but I'm not sure of the procedure, it's right? Thanks for the help

1644620769539.png
 

Ramussons

Joined May 3, 2013
1,304
Look at it this way:

Can be expanded to V1/2* [ 1-33/56] => V1/2 * [- 23/56]
A single Opamp with the 1/2 divider at the input and 56 K / 23 K for the feedback and input

1644673090693.png
What say?
 

dcbingaman

Joined Jun 30, 2021
682
Look at it this way:

Can be expanded to V1/2* [ 1-33/56] => V1/2 * [- 23/56]
A single Opamp with the 1/2 divider at the input and 56 K / 23 K for the feedback and input

View attachment 260495
What say?
There is a mistake in that math: 1-33/56=>23/56 (Positive) at 1/2 => 23/112. Two resistors and an amp is all you need. Can't say more without providing a solution.
 
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