2.7 Source Transformations A method called Source Transformations will allow the transformations of a voltage source in series with a resistor to a current source in parallel with resistor. The double arrow indicate that the transformation is bilateral, that we can start with either configuration and drive the other

Equating we have, Voltage source with a series resistor Current source with a parallel resistor

Polarity of V s in one form must be such that it tends to push in the direction of I s in the other form

Ex. 2.29: Determine i and i x using source transformation Single loop i x should be found from the original circuit KVL

Ex 2.30: Determine I and V Transform the 3V in series with the 2 Ohm resistor We get a single-node-pair circuit Using Ohm’s law in the original circuit:

Example (a) find the power associated with the 6 V source (b) State whether the 6 V source is absorbing or delivering power We are going to use source transformation to reduce the circuit, however note that we will not alter or transfer the 6 V source because it is the objective.

It should be clear if we transfer the 6V during these steps you will not be able to find the power associated with it