Transformers

Discussion in 'General Electronics Chat' started by Metalmann, Apr 7, 2014.

  1. Metalmann

    Thread Starter Active Member

    Dec 8, 2012
    700
    223
    Here is a small confusing discussion on transformers:

    http://www.youtube.com/watch?v=bJd8606oNNk&feature=youtu.be


    I thought all transformers provided voltage gain..........or reduction.:confused:


    "+John Emmerson Transformer do NOT add gain, that's a physical impossibility for a passive component, you are talking nonsense. If transformers provided gain, then the electric utility companies would be out of business. Every transformer has a loss factor, due to heat, eddy currents etc."
     
  2. #12

    Expert

    Nov 30, 2010
    16,321
    6,818
    Just get specific about which gain. A transformer can't do power gain, but the voltage and current are entirely negotiable.

    Edit: Do you think anybody is going to watch 38 minutes of video to find the context for one statement?
    Don't answer that. :D
     
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  3. The Electrician

    AAC Fanatic!

    Oct 9, 2007
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    326
    Emmerson's quote doesn't say voltage gain; it just says gain. He's talking about power gain.

    Edit: #12 beat me to it. :)
     
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  4. Metalmann

    Thread Starter Active Member

    Dec 8, 2012
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    Thank you, Gents.

    I'll have to re-read the transformer section.

    Again and again.........;)
     
  5. LDC3

    Active Member

    Apr 27, 2013
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    160
    I thought it was easy to understand:

    Power in = available power out - loss

    Voltage out = ratio of windings * voltage in
    Current out = voltage out over load
     
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  6. #12

    Expert

    Nov 30, 2010
    16,321
    6,818
    Now now, we all have weaknesses. No showing off. :D
     
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