Circuit Theory/Thevenin-Norton

Vth using Node thumb|opening load, finding Vth using Node .. code In using Node thumb|shorting load, finding In using Node .. code Rth or Rn Finding Rth using source injection and node Here is the mupad/matlab code that generates the answer Rth = 6.0591 ohms. Comparing Node with Thevenin Equivalent thumb|solving using Node .. code thumb|solving using Thevenin equivalent Solving the node equations yields: Using the Thevenin equivalent (and voltage divider) to compute voltage across the 12 ohm resistor: So they match ... Thevenin voltage and resistance can not be computed from a node analysis of the entire circuit, but the node analysis of the entire circuit can be used to check if the thevenin equivalent produces the same numbers.