Uploaded February 2022 | Updated September 2026, 2 weeks ago
Yes, you can do an .ac sweep at a single frequency. It's not much of a sweep, but if you just want to know the voltage/current magnitude and phase angles at a single frequency, the single frequency sweep gives you the values you need.
LTSpice does seem to have a limitation that it can only give you voltages of nodes, you can't get the voltage difference between nodes unless you sweep more than one frequency.
The circuit analyzed here is a simple RL circuit and the example was taken from this online, open-source textbook:
electronx.ca/education/ac-circuits/chapter-4-inductors-ac
I also solved this circuit by hand here: youtu.be/IA9VQdYj49A
And with KiCAD here: youtu.be/DiDn2ROpmUk
Yes, you can do an .ac sweep at a single frequency. It's not much of a sweep, but if you just want to know the voltage/current magnitude and phase angles at a single frequency, the single frequency sweep gives you the values you need.
LTSpice does seem to have a limitation that it can only give you voltages of nodes, you can't get the voltage difference between nodes unless you sweep more than one frequency.
The circuit analyzed here is a simple RL circuit and the example was taken from this online, open-source textbook:
electronx.ca/education/ac-circuits/chapter-4-inductors-ac
I also solved this circuit by hand here: youtu.be/IA9VQdYj49A
And with KiCAD here: youtu.be/DiDn2ROpmUk
