SUPER POSITION

SUPER-POSITION

- is to analyze a circuit, one source at a time.

• using the superposition method, we remove the (independent) sources, except one, and analyze the circuit for that one.

• then we repeat the procedure for another source, and so on.

• for removing source, we replace the voltage source with a short circuit. Then, for current source we replace it with an open circuit.

CONSIDER THIS IS A CIRCUIT:

 Find the voltage at node B.

• choose one of the two sources and remove it, and replace it with short circuit.

 

• You can use Nodal Analysis, Ohm's Law, Voltage Division or Mesh for getting the value of B.
• For easier to solve, You can use Voltage Division.
• Then, use the formula of Voltage Division.

 B = (3*1// 3)/(2 + 1//3)

• B1 now is equal to 0.8 or 9/11
• Next is to kill the 3V source and replace with short circuit and leave 10V source.

• repeat procedure
• B2 now is equal to -1.8 or -20/11
• Then, for the final value of B. B = B1 + B2
• B = - 1 V