EP 1431986 A1 20040623 - Coil assembly with variable inductance
Title (en)
Coil assembly with variable inductance
Title (de)
Spulenanordnung mit veränderbarer Induktivität
Title (fr)
Ensemble bobine avec inductance variable
Publication
Application
Priority
DE 10260246 A 20021220
Abstract (en)
The coil arrangement has two separate round ring cores (40,42) with operation windings (46,48) and a control winding (50). The control winding is wrapped around both ring cores for pre-magnetizing the ring cores.
Abstract (de)
Die Erfindung betrifft eine Spulenanordnung mit veränderbarer Induktivität, mit zwei getrennten Ringkemspulen, die Arbeitswicklungen tragen, und einer Steuerwicklung, die zur Vormagnetisierung des Kernmaterials der Ringkemspulen die beiden bewickelten Ringkemspulen umgreift. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 21/08 (2006.01); H01F 29/14 (2006.01); H01F 30/16 (2006.01); H01F 3/10 (2006.01); H01F 17/06 (2006.01); H01F 21/12 (2006.01); H01F 27/28 (2006.01); H01F 27/34 (2006.01); H01F 27/36 (2006.01); H01F 27/38 (2006.01)
CPC (source: EP US)
H01F 27/366 (2020.08 - EP US); H01F 29/14 (2013.01 - EP US); H01F 30/16 (2013.01 - EP US); H01F 3/10 (2013.01 - EP US); H01F 17/062 (2013.01 - EP US); H01F 21/12 (2013.01 - EP US); H01F 27/2895 (2013.01 - EP US); H01F 27/34 (2013.01 - EP US); H01F 27/36 (2013.01 - EP US); H01F 27/38 (2013.01 - EP US)
Citation (search report)
- [DX] GB 2195850 A 19880413 - ELEC & ELTEK POWER SUPPLY LIMI
- [XA] US 2169093 A 19390808 - EDWARDS MARTIN A
- [DA] DE 3621573 A1 19880107 - SIEMENS AG [DE]
- [A] EP 0475522 A1 19920318 - PHILIPS NV [NL]
- [A] CH 125076 A 19280316 - SIEMENS AG [DE]
- [A] GB 742494 A 19551230 - HARRY HOWE
- [A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 355 (E - 1573) 5 July 1994 (1994-07-05)
Designated contracting state (EPC)
FI FR GB IT SE
DOCDB simple family (publication)
EP 1431986 A1 20040623; DE 10260246 A1 20040715; DE 10260246 B4 20060614; JP 2004207729 A 20040722; US 2004119577 A1 20040624
DOCDB simple family (application)
EP 03027851 A 20031204; DE 10260246 A 20021220; JP 2003422362 A 20031219; US 72048503 A 20031125