transformers

Discussion in 'General Electronics Chat' started by dragon24, Jan 6, 2011.

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  1. dragon24

    Thread Starter New Member

    Dec 23, 2010
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    is this fact true, transformers only operate in AC as they require changing magnetic field in their core? thanks

    also if transformers only operate in AC why are sine waves used within mains transformers? thanks:)
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    a small amount of reading would reveal that a SINE WAVE is an AC voltage.

    A changing voltage(and current as well) produce variations of the magnetic field which 'induces' a voltage in the secondary.

    DC makes a constant magnetic flux of one definite magnitude, without change it is unable to 'induce' voltage into anything that is not moving in relation to it.
     
  3. dragon24

    Thread Starter New Member

    Dec 23, 2010
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    but do DC work within transformers at all? but why sine waves in mains transformers
     
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    If you actually think about the answer I gave you, you will discover the answer to your question.
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
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