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# How to calculate branch voltages and currents?

## I am taking an introduction to circuits lab and do not understand how to obtain branch voltages, branch currents, node voltages and loop currents. I would really appreciate a walkthrough on how to do this. A quick paint version of the circuit in question is here : http://i.imgur.com/9ydBn.png - Yes, it's ugly! Anyway, I am supposed to find Vr1 through Vr7 for the branch voltages, Ir1-ir7 for the branch current, V1-V4 for node voltage and I1-I3 for loop currents. V1-V4 are the little symbols. The sideways square after R1 is V1, triangle at the top is V2, the rhombus beneath the triangle is V3 and the Octagon on the right is V4. Would appreciate any help that can be given! EDIT: Forgot to include the values. Vin = 5.0V, R1 = R2 = R3 = 110Ohms, R4 = R5 = 1100Ohms and lastly, R6 = R7 = 2420Ohms

You cant even begin to solve this kind of problem until you have a good working understanding of Kirchoff's law(s)* for voltage and current as well as the principle of superposition **. See references below... More
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