Electronics > PCB/EDA/CAD

Weird issue in a simple LTspice circuit simulation



Consider the attached circuit to this post.

The issue is that I dont get the expected output, which is the V5 = 1V on the inverting input of the OP-AMP.

It seems to me that everything is connected OK. But the OP-AMP output shoots to -15V like it is in open loop. But clearly there is a feedback here.

I was wondering if someone know what is going on.

Andy Watson:
The overall feedback is positive.


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