Circuit Theory #24 | Thevenin and Norton Equivalents - Introduction and Example

Instructor: Dr. Süleyman Burak ÇELİK

Twenty-fourth lesson in the Circuit Theory series. This lesson introduces Thevenin and Norton equivalents. We replace the network seen by a load with a simpler equivalent circuit while preserving the same terminal behavior. Worked examples: - Example 1: find `Rth = 10 ohm`, `Vth = 10 V`, and the Norton current `IN = 1 A` - Load-current example: find `Rth = 8 ohm`, `Vth = 28 V`, then compute `i = 2 A` Main ideas: - Always look into the same terminals `a-b` - Remove the load before finding the equivalent - Turn off independent sources correctly when finding `Rth` - Use the open-circuit terminal voltage for `Vth` - Reconnect the load only after the equivalent is built Main takeaway: Thevenin and Norton equivalents are not new circuits with new behavior. They are simpler models that behave the same from the load terminals. #CircuitTheory #Thevenin #Norton #CircuitAnalysis #EquivalentCircuit #ElectricalEngineering #AcEdumy