High-power, low-loss high-frequency electrical coil
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorCharles W. Haldeman, III
Life of this patent
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Abstract
High frequency electrical coils are commonly made out of Litz wire. If the coil is baked and an aqueous phenol solution is pumped through a nylon tube making up the structural core of the Litz wire, the tube will be dissolved out, thereby yielding an unobstructed opening through which a cooling fluid may be pumped. The resultant coil has a vastly improved heat conduction and can tolerate substantially higher currents.
Claims10
An improved high-power, low-loss, high-frequency electrical coil comprising:
- a. at least one turn of Litz wire having a clear unobstructed center channel through which a cooling fluid may be pumped, there being no element between said Litz wire and said center channel, said wire being wound in a circular pattern,
- b. an electrical insulating material with mechanical strength in which the Litz wire is imbedded.
An improved high-power, low-loss, high-frequency electrical conductor that comprises a Litz wire having an unobstructed hollow center channel with no element between said Litz wire and said hollow center channel, and a low-electrical-loss, high-dielectric insulating cover that provides a structurally sound housing to prevent collapse of the otherwise structurally unstable Litz wire.
Dependencies are inferred from the claim text.