How to get the positive loop gain and negative loop gain in Bandgap circuit ?

[Kim Soo Hwan]

How to get the positive loop gain and negative loop gain in Bandgap circuit ?

I tried to use the AC method using large RC and
lstb sentence, but both failed.



With the above circuit, how can I get the loop gain of positive and negative ?

 

[srikanth300]

Do you mean the gain for positive and negative voltages? Use a dual-rail power supply say -5V +5V.

 

[Kim Soo Hwan]

No, I mean positive loop gain and
negative loop gain depicted in the picture.
Thank for concerning.