Metal working – Method of mechanical manufacture – Electrical device making
Patent
1980-06-25
1983-12-06
Gilden, Leon
Metal working
Method of mechanical manufacture
Electrical device making
29868, 29869, 338 89, 338195, 338307, H01C 702
Patent
active
044184743
ABSTRACT:
Thin film resistors (FIG. 1) are produced on flexible tape 1 to provide at low cost a very wide range of precision resistors having low inductance. A reel of tape 70 coated with resistive material is etched to create a plurality of sinuous resistor patterns 3 and an array of spaced interconnection pads 102 suitable for connection to external leads via intermediate wires. Formation of a resistor of the desired precision value is performed by a selection of two pads, preferably by automated means by a trial and error technique. Prior to pad selection, the resistor can be covered with a material 4 which provides stability of resistance, mechnical protection and facilitation of assembly.
REFERENCES:
patent: 3213402 (1965-10-01), Tassara
patent: 3405381 (1968-10-01), Zandman
patent: 3441804 (1969-04-01), Klemmer
patent: 3512115 (1970-05-01), Solow
patent: 3541491 (1970-11-01), Worster
patent: 3745508 (1973-07-01), Bruder
patent: 3970983 (1976-07-01), Hayasaka
patent: 3995249 (1976-11-01), Ferry
patent: 4146867 (1979-03-01), Blangeard
patent: 4172249 (1979-10-01), Szwasc
patent: 4242660 (1980-12-01), Cocca
Gilden Leon
Pressman David
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