Electrical resistors – With base extending along resistance element – Resistance element coated on base
Patent
1988-05-18
1989-08-22
Albrition, C. L.
Electrical resistors
With base extending along resistance element
Resistance element coated on base
338195, 338283, H01C 1012
Patent
active
048599816
ABSTRACT:
The present device is an electrical resistor component which includes a cylindrical substrate of non-electrical conducting material. A meandering path (strongly resembling a plurality of hairpins laid end to end) of electrical conducting (but at the same time resistant to electrical current) material is secured substantially around the length dimension surface of the cylindrical substrate. The meandering path is arranged so that there is separation area of the cylindrical substrate surface which separates the turn around bends of the path which face each other. This last mentioned area has a limited amount of electrical conducting material located therein. In the separation area there are included connecting deposits of the electrical conducting material which are connected to the turnaround bends. The connecting deposits serve to provide parallel paths and thus initially reduce the electrical resistance value of the overall electrical resistor component. When the leads of the connecting deposits are severed the resistance value can be increased to a required value. In addition, the ends of the meandering path are terminated in end areas of electrical conducting material which also can be helically cut and/or removed to trim the resistance value of the resistor component to meet a specified electrical resistance value.
REFERENCES:
patent: 4132971 (1979-01-01), Caddock, Jr.
patent: 4146867 (1979-03-01), Blangeard et al.
patent: 4386460 (1983-06-01), Klockow
Nickel, IBM Technical Disclosure Bulletin, "Element Trimming Fusible Link", vol. 26, No. 8, Jan. 1984, p. 4415.
Kiang, et al., IBM Technical Disclosure Bulletin, Folded Pattern for Film Resistor With Trimmable Elements in Binary Sequence, vol. 5, No. 4, 9/82 pp. 2003-2004.
Albrition C. L.
Cleaver William E.
EBG Elektronische Bauelement Gesellschaft m.b.H.
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