Radio interference suppression choke
AssigneeVacuumschmelze GmbH & Co. KG
InventorMarkus Brunner
Life of this patent
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Abstract
A choke for suppressing radio interference, having a terminal wire composed of an electrically conductive and thermally conductive, non-ferromagnetic, first alloy and having a magnetic tape core composed of a ferromagnetic, second alloy. The magnetic tape core includes a thin band wound into a coil around the terminal wire that has one end positively connected to the terminal wire. In addition, an optimum thermal contact of the magnetic tape core with a printed circuit board via the terminal wire implemented as current-carrying conductor is achieved by the to choke. As a result, an excess temperature occurring in the magnetic tape core can be reduced to values compatible for the alloys employed. In this way, the problem of aging, which depends functionally on the temperature, can be dramatically minimized.
Claims22
A choke for suppressing radio interference comprising:
- a terminal wire comprised of a first alloy that is electrically and thermally conductive and non-ferromagnetic;
- and
- a magnetic tape core comprised of a second alloy that is ferromagnetic, the magnetic tape core comprising a thin band wound into a coil around the terminal wire and having an end connected to the wire terminal;
- wherein the first alloy comprises Cu91Ni6Mn3, expressed in weight percent.
A choke for suppressing radio interference comprising:
- a terminal wire comprised of a first alloy that is electrically and thermally conductive and non-ferromagnetic;
- and
- a magnetic tape core comprised of a second alloy that is ferromagnetic, the magnetic tape core comprising a thin band would into a coil around the terminal wire and having an end connected to the wire terminal;
- wherein the first alloy comprises a composition having the formula
- Cu100−(a+b)MnaGeb,
- where a and b are representative of weight percent and satisfy the following conditions:
- 3≦a≦6 and 0≦b≦6.
Dependencies are inferred from the claim text.