Verification of Millman's Theorem

Procedure:

Keep all the resistances (R1, R2, & R3) close to their respective maximum values. Choose any arbitrary values of V1, V2 and V3.

Experiment Part Select:

Case 1:
Select switches S1 and S2 to power and S3 to load. Simulate the program. Observe the value of the load current (IL) from Case 1 tab.

Case-2:
a)Millman Voltage analysis:
Apply switches S1 and S2 to power and S3 to intermediate. Simulate the program. Read Millman voltage (Vth) from Case 2(a) tab.

b)Millman Resistance analysis:
Apply switches S1 and S2 to short and S3 to power. Simulate the program. Read Millman resistance (Rth) from Case 2(b) tab.

Case-3: Using Vth and Rth determine Load Current:
Specify the load resistance in case of the result table as the same load resistance entered in the main circuit. Simulate the program. Read Load current (IL) from Case 3 tab. Compare the load current (IL) obtained from Case 1.
N.B.:- All the resistances are in ohms.

Tutorials Point

V

V

V

V

A

R3=

R1=

R2=

Ω

Ω

Ω

R1

R2

R3

  • Circuit analysis to determine Load Current (IL)
     To get the Load current select switches
     S1 and S2 to Power and S3 to Load.
     And then click on Simulate to get the Load current (IL).

     Load current (IL):

    Amp

  • Circuit analysis to determine Millman Voltage (Vth)
     To get the Millman voltage select switches
     S1 and S2 to Power and S3 to Intermediate.
     And then click on Simulate to get the Millman Voltage (Vth).

     Millman Voltage (Vth):   

    V

  • Circuit analysis to determine Millman Resistance (Rth)
      To get the Millman Resistance select switches S1 and
      S2 to Short and S3 to Power. And then click on Simulate.
      Voltage :                             and   Current :

      Millman Resistance (Rth):

    V

    A

    Ω

  • Click on Simulate to get the
    Load Current(IL) from the
    Millman's equivalent parameter
    of the above circuit.

    Load Current(IL) :

    Now Click on Fill the table to fill data to the Observation Table Tutorials Point

    ⇚

    Equivalent
    Circuit

    Amp

    V

    Ω

    Ω




Observation Table:

Serial no. of ObservationLoad Current (IL)
from case 1		Load Voltage(VL) Load Resistance
(RL) = VL/IL		 Millman Voltage (Vth)
from case 2(a)		2nd Voltage source(v)
for case 2(b)		 Ammeter Reading(I)
from case 2(b)		Millman Resistance
Rth=V/I		Load current
(IL)=Vth/(Rth+RL)
1st
2nd
3rd
4th
5th