Re: [Help-gnucap] newby problems

[al davis]

On Sunday 15 July 2012, marty moore wrote:
> I'm running gnucap 0.35 on debian 6 with emacs 23.

I see a number of issues ..

The version you are using (0.35) is not the latest .. try the 
snapshot 20091207 .. it has a lot of fixes relative to 0.35.

You didn't say anything about the model .. it's some "X1" but 
that is all I can see.

But the real problem is that your circuit doesn't work.  You 
have an op-amp with only a capacitor for feedback, and sometimes 
the inverting input has no DC path to ground.

You might think that the simulator should show something like 
what a real circuit might do .. output goes full + or full - .. 
I'm not sure which.  What happens here is dependent on the model 
you use for the op-amp.  Many of those models do not handle this 
kind of situation correctly.