High performance current shunt

Details High performance current shunt High performance current shunt

1991-11-06

1993-05-25

Lateef, Marvin M.

Electrical resistors

Shunt type

338120, 338195, H01C 700

Patent

active

052144070

ABSTRACT:
A current shunt for converting a current to a voltage. The current shunt of the invention is made from a conductive material such as a high performance resistance alloy in sheet form which is sheared, punched, and bent to produce a highly stable current shunt with respect to time and temperature. Contact pins of current and potential connections are welded to the material using a fusion welding process, and techniques are also provided for isolating the potential contacts from the current contacts so as to improve stability. Trimming slits of the type used for thin film or foil resistors are also extended to bulk materials in accordance with the invention such that highly accurate resistances may be obtained. An integral heat sink and strain relief mechanism is also provided so as to minimize the adverse effects of temperature on the resistance of the material. The resulting current shunt has an extremely stable resistance value with respect to time and temperature at a minimal cost.

REFERENCES:
patent: 3252091 (1966-05-01), Morgan
patent: 4475099 (1984-10-01), Praria
patent: 4973837 (1990-11-01), Weinstein et al.
patent: 5015989 (1991-03-01), Wohlforth et al.

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