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What sort of power transformer is this?

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  • What sort of power transformer is this?

    I had to pull open a a/d/a converter box today to get at a fuse.

    I was curious about the power transformer I found inside:



    It's apparently a type of toroidal transformer but rather than being shaped like a circular donut it's more oblong and the core is not fully encased. Maybe it's not a Toroidal design at all?

    What are these designs called? Are they as effective as the more typical Toroidal design at keeping physical hum at a minimum?

    thanks,
    mike

  • #2
    That's an R-core. It's also used by some japanese manufacturers in high end audio output transformers.

    R-core technobabble from manufacturer
    Aleksander Niemand
    Zagray! amp- PG review Aug 2011
    Without the freedom to criticize, there is no true praise. -Pierre Beaumarchais, playwright (1732-1799)

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    • #3
      Thank you very much.

      I'll enjoy reading that websites info.

      best regards,
      mike

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