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Power transformers and power inductors for low-frequency applications using isotropic material with high power-to-weight ratio

  • US 6,879,237 B1
  • Filed: 09/14/2000
  • Issued: 04/12/2005
  • Est. Priority Date: 09/16/1999
  • Status: Expired due to Fees
First Claim
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1. A transformer for low frequency applications of from 50 Hz to 1000 Hz, said transformer comprising:

  • a core having a cylindrical symmetry around a main revolution axis, said core being formed of a soft isotropic magnetic material comprised of iron, said core including integral cooling fins comprising the soft isotropic magnetic material projecting from an external surface of said core; and

    windings enclosed in said core and magnetically coupled with said core.

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