P219lecture12AC - Goal To understand AC circuits and how...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Goal: To understand AC circuits and how they apply to resistors, capacitors, and inductions Objectives: 1) To learn about alternating current 2) To explore how voltages and currents of simple AC circuits compare to DC circuits 3) To understand Capacitors in an AC circuit 4) To understand Inductors in an AC circuit
Image of page 1

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

View Full Document Right Arrow Icon
What is alternating current? So far we have looked at what is called “direct current”. That is you have a constant current with time. However long ago it was discovered that it was far more efficient and useful to use a current that varied with time. Alternating current fluxuates over some time period from 0A to its maximum. For the home the time span of the fluxuation is 1/60 th of a second (a frequency of 60 Hz).
Image of page 2
Voltage with time The voltage is a sine wave. V(t) = Vmax * sin(wt) where w is the angular frequency Actual physical frequency is f = w/2π And period = 1/f
Image of page 3

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

View Full Document Right Arrow Icon
Root Mean Square The average voltage or power is found by the Root Mean Square.
Image of page 4
Image of page 5
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