10-13-11 Thevenin and Norton Equivalent Circuits

The current throw a short across nodes a and b in the

Info icon This preview shows pages 4–7. Sign up to view the full content.

View Full Document Right Arrow Icon
– The current throw a short across nodes A and B in the equivalent circuit – Thevenin Equivalent Resistance – The current through a 510Ω resistor across A and B in the equivalent circuit Table 1. The various values before the Thevenin Equivalent circuit was built Value Calculated Measured Percent Error 9.17 V 9.18 V 0.11% 15.75 mA 14.41 mA 8.51% 635.14 Ω 629 Ω 0.94% 8.734 mA 8.02 mA 8.90% Question 1. With the 510Ω load resistor in place, how much power does the entire Thevenin’s equivalent circuit consume? With the load resistor, the current was measured to be 8.02mA. Coupled with the voltage, 9.18V, we can find the power thus so:
Image of page 4

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
II. Maximum Power Transfer In this section of the lab, we had to connect the load resistance across the terminals A and B in our equivalent circuit. We then measured the values in Table 3 and plotted them in Figure 3. Table 3. The power measurements Resistance () Voltage () Current () Power () 510 9.17 8.02 32.803 560 9.17 7.64 32.687 620 9.17 7.3 33.040 680 9.17 6.97 33.035 750 9.17 6.64 33.067 Figure 3. The plot of power versus resitance, showing a slight ‘bump’ around the value III. Simulations Finally, each circuit is simulated here, using Multisim . Figure 4. The initial circuit, with a multimeter reading Figure 5. The initial circuit, with a multimeter reading With these two values, we can calculate the equivalent resistance using Ohm’s Law:
Image of page 5
Figure 6. The Thevenin equivalent circuit with a multimeter reading Figure 7. The Thevenin equivalent circuit with a multimeter reading Figure 8. The Thevenin equivalent circuit with a 636Ω resistor across terminal AB, with a current measured and voltage Question 2. How much power does the circuit consume? Does maximum power transfer occur at
Image of page 6

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern