# How to plot “voltage drop” across a specific component in LTSpice?

In the above circuit I can only be able to plot |Vr1+Vc1| = V1 in green plot and Vc1 in blue plot. I use the voltage probe in LTSpice and click on the lines to obtain the plots. If I click on the line between V1 and R1 it plots |Vr1+Vr2| = V1. If I click on the line between R1 and C1 it plots Vc1.

Is there a way to see also Vr1 (the voltage drop only accross R1) along with the others?

Click on the left side of the component (cursor will be a red probe before, then turning gray), drag over the component to the right (cursor will be a black probe), then release the mouse button.

Now the graph shows something like V(N002,N003) which is the voltage between those nodes. If you know the node names you can also manually enter these expressions into the graph view, or move things around or do calculations there.

• That dragging trick was new to me, I always used V(n001)-V(n002) or something similar. You never learn all the tricks of the tools you use... – Arsenal Dec 3 '15 at 9:32
• Used LTSpice for 14 years and never knew this trick!! – Michael Karas Dec 3 '15 at 10:33
• @MichaelKaras: I bet they didn't had this 14 years ago and it is just human nature to not question the methods one has learned. – PlasmaHH Dec 3 '15 at 10:45
• omg, this is a thing? I've been moving ground points around the schematic this entire time. – DKNguyen May 26 at 18:57