Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
No, it is not clear what you want.
If you change resistor C in a way that at IN+ is less voltage than on IN-, then the circuit must output a negative voltage.
Otherwise something is wrong.
It is like you switch ON the heating, but say you want it to become colder.
***********
The circuit amplifies the difference of the two input voltages.
Forr example on IN- you have 3.0V.
If now on IN+ is 3.1 V you will see a positive value at the output
If on IN+ is exactely the same 3.0 V then output is 0.0V
If on IN+ is 2.9V you will see a negative output.
But you don't want a negative voltage. What do you expect?
Should the value be limited at 0.0V?
Or should it go positive? This is called a rectifier.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
