Metal working – Method of mechanical manufacture – Electrical device making
Patent
1998-01-20
1999-09-21
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
29621, 29874, 29593, H01C 700, H01C 1728
Patent
active
059538112
ABSTRACT:
The temperature coefficient of resistance (TCR) of a resistor having a layer of a resistance material on a surface of a substrate and a termination layer of a conductive material at opposite ends of the resistance layer is adjusted by changing the area of at least one of the termination layers. The area of the termination layer is changed by removing a portion of the termination layer. The portion of the termination layer can be removed by making a cut through the termination layer which extends along a line across at least a portion of the termination layer. This method can be used to form matched pairs of resistors by first adjusting the resistance value of at least one of a pair of the resistors at room temperature to provide the resistors with substantially the same resistance values. The TCR of one of the resistors is then adjusted by removing a portion of one of the terminations of the resistor until both resistors have substantially the same TCR.
REFERENCES:
patent: 3738919 (1973-06-01), Chilton et al.
patent: 3745506 (1973-07-01), Bethe
patent: 4041440 (1977-08-01), Davis et al.
patent: 4200970 (1980-05-01), Schonberger
patent: 4454495 (1984-06-01), Werner et al.
patent: 4907341 (1990-03-01), Chapel, Jr. et al.
patent: 5798685 (1998-08-01), Katsuki et al.
Cohen Donald S.
Echols P. W.
EMC Technology LLC
LandOfFree
Trimming temperature variable resistor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trimming temperature variable resistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trimming temperature variable resistor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-70433