Electrical resistors – Mechanically variable – Resistance value varied by removing or adding material
Patent
1983-05-02
1985-07-09
Mayewsky, Volodymyr Y.
Electrical resistors
Mechanically variable
Resistance value varied by removing or adding material
219121LM, 219543, 338309, 338314, 430315, H01C 1000
Patent
active
045285462
ABSTRACT:
A thick film resistor includes a ceramic substrate 10, a pair of spaced apart electrical connections 30 affixed to the substrate 10, a region of electrically resistive material 21 coated onto the ceramic 10 and not in contact with either of the electrical connections 30, the electrically resistive material adapted to be trimmed 25 and 26 along an edge to thereby lower its resistance, and a pair of spaced apart strips of electrically conductive material 12 and 14 formed on the substrate 10 in electrical contact with the resistive material 21 and extending to a respective one of the pair of connectors 30, the strips 12 and 14 being substantially parallel where in contact with resistive material 21 except at ends of the strips 13 and 15 opposite the location to be trimmed 25. The invention places highest electric field concentrations away from the edge to be trimmed.
REFERENCES:
patent: 3370262 (1968-02-01), Marty et al.
patent: 3824521 (1974-07-01), Horii et al.
patent: 3947801 (1976-03-01), Bube
patent: 4201970 (1980-05-01), Onyshkevych
patent: 4217570 (1980-08-01), Holmes
patent: 4242152 (1980-12-01), Stone
patent: 4284970 (1981-08-01), Berrin et al.
patent: 4288530 (1981-09-01), Bedard et al.
patent: 4288776 (1981-09-01), Holmes
patent: 4297670 (1981-10-01), Solow
M. A. Paoli "Product Review Resistor Network", International Society of Hybrid Microelectronics, Jun. 1982, pp. 534-538.
Mayewsky Volodymyr Y.
National Semiconductor Corporation
Pollock Michael J.
Winters Paul J.
Woodward Gail W.
LandOfFree
High power thick film does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High power thick film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High power thick film will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-911923