EP 0992042 A1 20000412 - NON-LINEAR RESISTANCE WITH VARISTOR BEHAVIOUR AND METHOD FOR THE PRODUCTION THEREOF
Title (en)
NON-LINEAR RESISTANCE WITH VARISTOR BEHAVIOUR AND METHOD FOR THE PRODUCTION THEREOF
Title (de)
NICHTLINEARER WIDERSTAND MIT VARISTORVERHALTEN UND VERFAHREN ZUR HERSTELLUNG DIESES WIDERSTANDS
Title (fr)
RESISTANCE NON LINEAIRE A COMPORTEMENT DE VARISTOR ET PROCEDE PERMETTANT DE PRODUIRE CETTE RESISTANCE
Publication
Application
Priority
- CH 9900165 W 19990423
- DE 19824104 A 19980427
Abstract (en)
[origin: US6469611B1] The nonlinear resistor has varistor behaviour and has a matrix and a filler in powder form which is embedded in the matrix. The filler contains sintered varistor granules with predominantly spherical particles of doped metal oxide. These particles are made up of crystalline grains separated from one another by grain boundaries. The filler also contains electrically conductive particles, which cover at most a part of the surfaces of the spherical particles, and/or the varistor granules contain two fractions of particles with different sizes, of which the particles in the first fraction have larger diameters than the particles in the second fraction and are arranged essentially in the form of close sphere packing and the particles in the second fraction fill the interstices formed by the sphere packing.The resistor can be produced straightforwardly and cost-effectively and is distinguished by a high nonlinearity coefficient, which is desired for a good protection characteristic, and by a high power acceptance.
IPC 1-7
IPC 8 full level
H01C 7/10 (2006.01); H01C 7/112 (2006.01); H01C 7/12 (2006.01)
CPC (source: EP US)
H01C 7/112 (2013.01 - EP US); H01C 7/12 (2013.01 - EP US)
Citation (search report)
See references of WO 9956290A1
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
US 6469611 B1 20021022; AT E303652 T1 20050915; AU 3404399 A 19991116; AU 751978 B2 20020905; CN 1145981 C 20040414; CN 1266534 A 20000913; DE 19824104 A1 19991028; DE 19824104 B4 20091224; DE 59912488 D1 20051006; EP 0992042 A1 20000412; EP 0992042 B1 20050831; JP 2002506578 A 20020226; JP 4921623 B2 20120425; PL 190068 B1 20051031; PL 337696 A1 20000828; WO 9956290 A1 19991104
DOCDB simple family (application)
US 44557299 A 19991209; AT 99915429 T 19990423; AU 3404399 A 19990423; CH 9900165 W 19990423; CN 99800605 A 19990423; DE 19824104 A 19980427; DE 59912488 T 19990423; EP 99915429 A 19990423; JP 55346399 A 19990423; PL 33769699 A 19990423