# How to conduct mesh analysis on a current source in series with a resistance?

How can I do a mesh analysis of the following kind of circuit? I'd normally put up Kirchoff's voltage laws for each of the two loops. If the current source wasn't in series with a resistance, I'd write down the voltage law for the complete sling (R 3-4-6-9-8) and the relation between the partial circuits, but in this case, I don't know how to handle the current source.

How can I conduct a mesh analysis?

• Solved it! But I can't delete my question =/ Sep 29, 2011 at 1:41
• Don't delete your question. Instead, answer it and accept the answer. Maybe you'll help out the next guy. Sep 29, 2011 at 4:16
• It will help you earn points too. Sep 29, 2011 at 5:24
• @markrages: Ok, I tried to before, but there was a limit before I could answer my own question. Will try again later. Sep 29, 2011 at 8:30

$$I_d - I_u = I_2$$
where $I_d$ is the clockwise current in the lower mesh, and $I_u$ is the clockwise current in the upper mesh.