ac analysis setup question

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diarmuid

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Hello,

I have to do an ac analysis of an op-amp using Eldo.

I put an ac source on the input. I set the DC voltage to my DC point.

But it also has fields for Phase and Magnitude.

What do I set these at and would that be useful?

Thanks,

Diarmuid
 

Phase = 0 and mag = 1 is what I do. But you need
to "sniff" the input difference voltage to get the
right basis for loop gain (open or closed) - not the
magnitude of the stimulus source.
 
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