EP 0590347 B1 19960619 - Resistance with PTC-behaviour
Title (en)
Resistance with PTC-behaviour
Title (de)
Widerstand mit PTC-Verhalten
Title (fr)
Résistance à comportement PTC
Publication
Application
Priority
DE 4232969 A 19921001
Abstract (en)
[origin: EP0590347A1] The electrical resistance element contains a resistance body (3) which is situated between two contact terminals (1, 2) and has PTC behaviour and which is composed of a polymer matrix (4) and a filler component made of electrically conducting particles (5) embedded in the polymer matrix (4). Despite a simple and inexpensive construction, this resistance element is claimed to be notable for good electrical conductivity in the low-resistance state and for a low response time for the PTC transition from the low- to the high-resistance state. This is achieved as a result of the fact that the electrically conducting particles (5) are at least partially formed in each case as composite bodies having electrically conducting surface and/or as hollow or porous bodies made of electrically conducting material and, compared with particles of solid construction made of conductive material, they have a lower specific density and/or a lower specific heat capacity in all cases. <IMAGE>
IPC 1-7
IPC 8 full level
H01C 7/02 (2006.01)
CPC (source: EP US)
H01C 7/027 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0590347 A1 19940406; EP 0590347 B1 19960619; DE 4232969 A1 19940407; DE 59303003 D1 19960725; JP H06215903 A 19940805; US 5416462 A 19950516
DOCDB simple family (application)
EP 93114118 A 19930903; DE 4232969 A 19921001; DE 59303003 T 19930903; JP 24531793 A 19930930; US 12229693 A 19930917