Hi everyone. I am stuck on op-amp. There are some problems that I can deal with, and some thay I can't. I know that if our signal is applied into inverting input then there will be phase shift of 180 degrees in the output. For the example below, this rule doesn't work. The signal applied to the non-invering input doesn't have to change in the output. What am I doing wrong?

 

Presumably this is just theory and not real life.
Depends on phase of Vo1 and Vo2.
If Vo1 is in phase with +ve input and Vo2 is in phase with -ve input then the drawing is misleading, assuming that it is just a drawing for illustration purposes.

 

Yes, this op amp has complementary outputs. The inverting output will be as shown, and the non-inverting output will be inverted from that shown.

 

Hi ,
For the unity gain Non-inverting configuration try using Voltage follower / Buffer circuit - with negative feedback .
Relatively comparing , if +ve pin is higher than -ve pin then the output is a Non-inverting signal .

 

Schematics :