Below is LTspice simulation in which this error occurs.
The error is Unknown subcircuit called inc xu1 n001 n003 op opamp
How do I fix this error?
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Voltage Spike
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Muhammad Sohaib
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With no partnumber on the schematic shown, are you sure you applied a model to the opamp? If you used one of the Generic/Universal models, you may have to specify the actual opamp characteristics, or supply a component spice model before the simulation can run – Luke Gary Jan 21 '21 at 20:06
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You have no model for the opamp, every component needs a model:
add the line .lib opamp.sub for further reading on adding models see these links
Voltage Spike
- 75,799
- 36
- 80
- 208