High-frequency safety fuse
AssigneeSiemens Aktiengesellschaft
InventorsWilhelm Duerr, Gerhard Temmel
Life of this patent
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Abstract
A high-frequency safety fuse has a fusible conductor having a cross-sectional area capable of carrying a high-frequency current, and two electrical terminals respectively connected to opposite ends of the fusible conductor. The cross-sectional area has a dimension in at least one direction which is approximately twice the penetration depth of the high-frequency current in the conductor. A fuse is thereby obtained having a low high-frequency equivalent resistance but also having a low cut-off current.
Claims36
A high-frequency safety fuse comprising:
- a fusible conductor having a cross-sectional area for carrying a high-frequency current, said current having a frequency giving said current a penetration depth in said fusible conductor, said conductor having a dimension in at least one direction which is substantially twice said penetration depth of said high-frequency current, said fusible conductor having opposite ends;
- and
- two electrical terminals respectively connected to said opposite ends of said fusible conductor.
A high-frequency safety fuse comprising:
- a carrier member;
- a thermally and electrically insulating thin layer disposed on said carrier member;
- a fusible conductor in the form of a printed conductor run on said thin layer for carrying a high-frequency current, said current having a frequency giving said current a penetration depth in said fusible conductor, said fusible conductor having a cross-sectional area with a dimension in at least one direction which is substantially twice said penetration depth of said high-frequency current in said fusible conductor, said fusible conductor having opposite ends;
- and
- two electrical terminals respectively electrically connected to said opposite ends of said fusible conductor.
A method for manufacturing a high-frequency safety fuse comprising the steps of:
- providing a fusible conductor with a cross-sectional area for carrying a high-frequency current, said current having a frequency giving said current a penetration depth in said conductor, said fusible conductor having opposite ends;
- ensuring said fusible conductor has a dimension in at least one direction which is substantially twice said penetration depth of said high-frequency current;
- and
- connecting two electrical terminals respectively to said opposite ends of said fusible conductor.
Dependencies are inferred from the claim text.