pulse transformer working?

Discussion in 'General Electronics Chat' started by pawankumar, Apr 30, 2010.

  1. pawankumar

    Thread Starter Member

    Oct 28, 2009
    42
    3
    hi,
    I need to know the concept.i donot know how the pulse transformer works.books say rectangular pulses are reproduced at the output and it gives regenerative feedback.pls explain me..also what is regenerative feedback?
     
    Last edited: Apr 30, 2010
  2. pawankumar

    Thread Starter Member

    Oct 28, 2009
    42
    3
    also tell me how to make the thread topic bold:(..every time i fail in doing it and most of the threads go unseen
     
  3. kingdano

    Member

    Apr 14, 2010
    377
    19
  4. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    What is the requirement for the square wave?

    Are you in need of a transformer or a DC to DC converter?

    The DC to DC will give you a step up, or down keeping the output square.

    Using pwm, or even a smps, will give you the chain of square pulses.
     
  5. pawankumar

    Thread Starter Member

    Oct 28, 2009
    42
    3
    actually it is in my exam syllabus..it is required for blocking oscullators in base and emitter timing.i didnot get one point.since trf is a pair of inductors,how is dc transferred to the output first of all..
     
  6. Ghar

    Active Member

    Mar 8, 2010
    655
    72
    Switching DC isn't DC anymore.
    DC is 'forever'.

    DC voltage across an inductor is zero right? Can't have infinite current.
    You can easily apply a square pulse though... you start at 0, current rises at a constant rate, then you shut it off and current stays at some high level.

    If you're switching DC across a transformer or inductor you need to have zero average (0 DC). This is called volt-second balance.
    http://ecee.colorado.edu/~pwrelect/book/slides/Ch2slides.pdf
     
    pawankumar likes this.
  7. pawankumar

    Thread Starter Member

    Oct 28, 2009
    42
    3
    thank you ghar..
     
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