{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Transformers - Transformers A transformer is an electrical...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Transformers A transformer is an electrical device that takes advantage of inductance in order to convert one voltage/current to another voltage/current. The basic construction is shown in the figure to the right. Two coils of wire are wound around a frame that is highly permeable to magnetic flux—soft iron, for instance. The voltage fed into the primary side creates magnetic flux that is channeled around to the secondary coils, where induction occurs, converting the energy back to electricity. Clearly since this depends on inductance, a transformer will only work for AC . (This is why a cell- phone charger has the giant block on the end of the plug: The tiny wire leading away carries a small DC voltage, which means the transformer has to go right next to the AC wall outlet to step down the voltage there to a useful level there.) Remarkably, the transformer can be analyzed as a magnetic circuit where the flux Φ in webers takes the place of current, the driving (primary) coil provides a magneto-motive
Image of page 1
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