Multiple element PTC resistor

Details Multiple element PTC resistor Multiple element PTC resistor

1996-08-05

1998-07-07

Tso, Edward

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

H01C 710

Patent

active

057775419

ABSTRACT:
A two-terminal resistor (2) having a positive temperature coefficient of resistivity, comprised of a plurality of disc-shaped resistive elements (1) which are arranged and held together in a stack, whereby: each resistive element (1) has two oppositely-situated principal surfaces (3), each of which is metallised substantially in its entirety; a metallic arm (7) is situated between each pair of adjacent resistive elements (1), and is soldered to a principal surface (3) of each element (1) in the pair; a metallic arm (7') is soldered to the terminating principal surface (3') at each end of the stack; part of each metallic arm (7, 7') protrudes outward beyond the boundary of the stack; the protruding parts of the metallic arms (7, 7') with an even ordinal (n=2,4,6) are rigidly connected to a first terminal (9a), and the protruding parts of the metallic arms (7, 7') with an odd ordinal (n=1,2,3) are rigidly connected to the second terminal (9b).

REFERENCES:
patent: 3824328 (1974-07-01), Ting et al.
patent: 4246468 (1981-01-01), Horsma
patent: 4315237 (1982-02-01), Middleman et al.
patent: 4357590 (1982-11-01), Belhomme
patent: 4504817 (1985-03-01), Shikama et al.
patent: 5064997 (1991-11-01), Fang et al.
patent: 5142267 (1992-08-01), Fellner et al.
patent: 5471034 (1995-11-01), Kawate et al.
patent: 5493266 (1996-02-01), Sasaki et al.

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