Laboratory_4_TEC_Nur

Laboratory #4

Superposition Theorem

Table 1: Simulation results for voltage and current with both sources

	R1	R2	R3	R4	R5
Voltage	15.86V	7.137V	-2.451V	9.588V	-3.412V
Current	15.58mA	20.39mA	-9.811mA	3.835mA	-13.65mA

I1 right; I2 down; I3 left; I4 down; I5 left. -0.318; 26.662; 26.975

Table 2: Simulation results for voltage and current with Vs2 source only

	R1	R2	R3	R4	R5
Voltage	-4.405V	4.405V	-3.882V	8.287V	-4.713V
Current	-2.938mA	12.59mA	-15.53mA	3.316mA	-18.84mA

I1 left; I2 down; I3 left; I4 down; I5 left.

Table 3: Simulation results for voltage and current with Vs1 source only

	R1	R2	R3	R4	R5
Voltage	20.21V	2.732V	1.431V	1.301V	1.301V
Current	13.51mA	7.797mA	5.718mA	0.519mA	5.198mA

I1 right; I2 down; I3 right; I4 down; I5 right.;11.34

Questions:

1. Check for superposition principle. Enter your observations here.

In order to check superposition principle I took voltage and current measurements of R1 and R5. The sum of V_R1 from table 2(-0.318V) and table 3(26.975V) resulted in 26.662V from table 1. The sum of I_R1 from table 2(-21.402mA) and table 3(32.724mA) resulted in 16.344mA from table 1. It was the same for measurements of R5:

-4.713V (table 2) + 1.301V (table 3) = -3.412V (table 1)

-18.84mA (table 2) + 5.198mA (table 3) = -13.65mA (table 1)

2. Superposition theorem applies for only certain types of circuit. State what is the type?

It is a circuit without dependent parts.

3) Superposition applies to only some variables or quantities like current and voltage. It does not apply to, for example, power. State why not.

It doesn't work because power goes as the square of voltage or current, and the sum of the squares is not equal to the square of the sums.