# 2- Set the two independent power sources to Vsi 6V and Veo” 10 V and measure…

2- Set the two independent power sources to Vsi 6V and Veo” 10 V and measure their actual values using the DMM. Actual Values of power sources: 4.47 VS15.99 Vs- 3- Using the breadboard construct the circuit shown in Figure 4,1 (repeated below for convenience). Use the resistors measured in Step 1 (above) and the power sources Vsi- 6 V, and Vs2 -10 V. IR3 IRI RS. R5 R1 R3 Va V4 V2 V1 ww ww It 12 R4 R23 IR4 Figure 4.1-Circuit containing 3 main meshes and 5 nodes (repeated) 4 Note that the mesh currents (i, h, and i) have already been designated. 5- Measure the mesh currents (not the Branch currents). Record your results in Table 4.3. Indicate always the units. Table 4.3- Measured Mesh Currents is is Mesh currents: 238m4 (measured) 33 MA 30m4 50 Comparison and Questions: 0- From your measured mesh currents, calculate the value of all the branch currents, this is the current in each resistor. Record your results in Table 4.4. Show all your equations and calculations in a clear and neat way. Use an extra sheet of paper to show all your calculations. Table 4.4- Calculated Branch Currents IRS Branch Name: IRs Branch currents: (calculated) 7-Compare the mesh currents obtained in Table 4.1 (calculated) versus Table 4.3 (measured) to find the difference between the values. This is the % error in the values. Record these in Table 4.5. Table 4.5- Mesh Currents error: theoretical and experimental is iz % Error Calculated – Measured 100 Calculated For each resistor calculate the electrical power dissipated by the resistor. Record your result in 8- Table 4.6, indicate the units. P IR (watts) Table 4.6- Calculated power dissipation in each resistor Rs R4 R3 R2 RI Resistor Calc. Power 9. Nodal analysis is always used in circuit analysis programs written for computers. This because it is very easy to tell the computer which elements are connected between particular nodes in the circuit, and it is muchharder to describe the loops of a circuit for a computer program. PRE-LABORATORY CALCULATIONS AND SIMULATIONS To be completed at home, before coming to the lab For all the calculations and simulations use the circuit given in Figure 4.1 using the following values: Ri-1.5 k2, R-1 ka, Rs-3.3 kQ, R-5.6 kQ, Rs-2k, Vs-6 V, and Vsa- 10v IR3 IRS IRI Va R5 R1 R3 Vo ww ww 13 12 R23 R4 R2 R4 ri Figure 4.1-Circuit containing 3 main meshes and 5 nodes ni Calculations 1- Consider the circuit given in Figure. 4.1. Use mesh analysis to find the mesh currents ( i, i, in). Show below in a clear and neat way these equations. Solve the equations and write results of the currents in Table 4.1. Matlab or any other software that has capabilities to solve linear system of equations can be used. Mesh 1: Mesh 2: Mesh 3: 48 Table 4.1- Calculated currents using Mesh Analysis is i 2- Build circuit in Figure 4.1 using Multisim software and measure the currents and record them in Table 4.2. Table 4.2- Simulated currents using Multisim Software iz Pre-Lab Verification: