They are Interchangeable Georgia Institute of （它们是可以互换的乔治亚理工学院的）.pdf

Thevenin’s and Norton’s Equivalent Circuit Tutorial. (by Kim, Eung) Thevenins Theorem states that we can replace entire network by an equivalent circuit that contains only an independent voltage source in series with an impedance (resistor) such that the current-voltage relationship at the load is unchanged. Nortons Thereom is identical to Thevenins Theorem except that the equivalent circuit is an independent current source in parallel with an impedance (resistor). Therefore, the Norton equivalent circuit is a source transformation of the Thevenin equivalent circuit. Original Circuit Norton‘s Thevenin’s Equivalent Equivanlent Circuit Circuit They are Interchangeable 1 How to find Thevenins Equivalent Circuit? If the circuit contains You should do 1) Connect an open circuit between a and b. 2) Find the voltage across the open circuit which is Voc. Voc = Vth. Resistors and 3) Deactivate the independent sources. independent sources Voltage source open circuit Current source short circuit