# Circuit Theory/2Source Excitement

Examples worked out:

-   LRC circuit #1
-   parallel RLC network with extra resistor in L
    leg

Working on this example: !Circuit analyzed earlier with
Kirchhoff\'s
laws
This circuit was earlier analyzed using
Kirchhoff. The
goal is to repeat the analysis using Node and Mesh \... then find
Thevenin\'s voltage, Norton\'s current and the equivalent impedance of
the circuit from R~3~\'s point of view.

The Kirchhoff goal is to find everything:

:   *Given that the voltage source is defined by
    $V_s(t) = 10cos(1000t + 30^{\circ})$ and the current source is
    defined by $I_s(t) = 0.5 sin(1000t + 45^{\circ})$, find all other
    voltages, currents and power of the sources.*

The /Node and Mesh/ analysis goal does not
find everything. Node voltages and mesh currents are the first things
found. Then everything else can be found.

/Thevenin and Norton/ look at the
rest of the circuit from just one component (or group of components)
point of view. So even fewer voltages and currents are found.

