Electrical resistors – With base extending along resistance element – Resistance element coated on base
Patent
1989-01-04
1990-02-06
Albritton, C. L.
Electrical resistors
With base extending along resistance element
Resistance element coated on base
29621, 219541, 338307, 338327, H01C 1012
Patent
active
048991260
ABSTRACT:
A thick film resistor type printed circuit board including an insulating substrate, a plurality of pairs of terminal electrode layers made of silver and formed on the insulating substrate, a plurality of resistor layers formed on the terminal electrode layers so as to connect the pairs of the terminal electrode layers, respectively, a plurality of wiring conductive layers made of copper and connected to predetermined ones of the terminal electrode layers so as to coat the predetermined ones of the terminal electrode layers and a protective layer for covering at least a portion of the insulating substrate, in which portion the terminal electrode layers and the resistor layers are formed.
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patent: 2758267 (1956-08-01), Short
patent: 3621442 (1971-11-01), Racht et al.
patent: 3649645 (1972-03-01), Waits
patent: 3775725 (1973-11-01), Endo
patent: 3909680 (1975-09-01), Tsunashima
patent: 4654510 (1987-03-01), Umega et al.
patent: 4695504 (1987-09-01), Watanabe et al.
patent: 4816615 (1989-03-01), Prabhu et al.
Albritton C. L.
Sharp Kabushiki Kaisha
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