Voltage Source Could Not Use Negative Value

Hi, i im new to QSpice and would like to ask if is possible to add negative value to DC Source, as i im trying to simulate TTrak temperature output bias and need negative value from VSVC.

Here on schematic it is labeled V3 and value is -1.8V (i need to have negative value to bias output stage current to cca 150mA).

Simulation gives me error and would not run, if i put 1.8V for DC value then simulation runs but output stage is not biased as it needs -1.8V.

How to add to voltage source negative voltage? In this example -1.8V?

Here is project with models as forum does not allow me to attach files.

Hi, ronovar.

Your link goes to a sign-in page, not to something I can view. So, I’m just guessing… Is this what you’re trying to do? If not, maybe fix the link so that we can access your example.

Untitled.qsch (2.6 KB)

–robert

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