Superposition Principle in Electric Circuit Fundamentals and Electrical Engineering

Superposition principle is an important theorem in Electric Circuit fundamentals, It involves the calculation of current and voltage contributions separately from all sources in any circuit and then to sum up all these values for calculating overall voltage and current effects on any resistor or component. Superposition theorem is an important theorem which relieves problem of solving complex simultaneous problems. While, apply principle to any circuit, current sources are made open, whereas voltage sources are suppressed to short circuit.

1. Superposition Principle Presented by www.ielectricalengineering.com www.ielectricalengineering.com

2. www.ielectricalengineering.com Voltage and Current Voltage and current through any component is an equivalent sum of voltage and current due to all sources. R1 6k Ω R2 15k Ω V1 5 V V2 10 V

3. www.ielectricalengineering.com Voltage and Current The voltage on R1 is 1.429. Similarly Voltage on R2 is 3.571 R1 6k Ω R2 15k Ω V1 5 V V2 10 V

4. www.ielectricalengineering.com Voltage and Current This voltage is combined effect Voltage source V1 and Voltage source V2. R1 6k Ω R2 15k Ω V1 5 V R1 6k Ω R2 15k Ω V2 10 V

5. www.ielectricalengineering.com Superposition Principle The fact that current and voltage on any source is combined effect of all resistors form basis of superposition principle.

6. How to apply Superposition Principle In superposition principle all current and voltage sources are suppressed except one source. Effect of every single source is observed one by one. After calculating all effects, in end they are added. www.ielectricalengineering.com

7. How to suppress Current source To suppress current source, simple replace it by open circuit www.ielectricalengineering.com

8. How to suppress Voltage source To suppress voltage source, simply replace it by short circuit www.ielectricalengineering.com

9. For more details and problems visit http://www.ielectricalengineering.com/2015/07/circuit-analysis-with-superposition-principle.html