Binary fuse device

Details Binary fuse device Binary fuse device

1990-12-07

1992-03-24

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337160, 337290, H01H 8504

Patent

active

050992180

ABSTRACT:
A binary electrical fuse is comprised of a core wire which is preferably relatively rigid, has a high ohmic resistance, and a high melt temperature. The core wire is clad with a metal of substantially less rigidity having a low ohmic resistivity, and low melt temperature, i.e. in the range of from about 230 degrees C. to 700 degrees C. The resistance of the core wire is at least about ten times the resistance of the cladding and preferably twenty or more times the resistance of the cladding. In the course of a fusing cycle the cladding metal will melt and pool, leaving the core wire as the sole conductor resulting in a rapid blow of the fuse due to the sudden high resistance load presented by the core wire.

REFERENCES:
patent: 1068341 (1913-07-01), Hope
patent: 1626105 (1927-04-01), Sundt
patent: 2911504 (1959-11-01), Cohn
patent: 3267238 (1966-08-01), Arikawa et al.

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