You only need to attach the zip file once. This is a forum and everybody can see all the posts, even if they are in reply to someone else. Holger is the one who you should hope to see your post. Piotr isn’t interested and I am not interested either because I don’t run ngspice simulations. I was just giving you general advice for debugging, for example, when faced with a large problem, break it down into smaller problems.
I have opened your project in KiCad 8.
There is a bug in the model file NJM5532x_v0301_Z.lib:
In line 26, there are unknown characters after R3 99 12 {R3}, remove them.
Don’t tie two opamp outputs together, leave B_OUTPUT open.
Run an op (operating point analysis) first to check if voltages are o.k.
They are not, everywhere +17V, no -17V.
Polarity of V3 is wrong, turn it around
If you do this, you will get
1 Like
Thank you, holger.
Corrected NJM5532x_v0301_Z.lib.
I changed the polarity of -17V VDC.
I opened the second output of NJM5532DD.
As a result, the same results as Holger’s simulation were obtained.
I am very grateful to you.
Thanks also to retiredfeline and Piotr.
2 Likes