EP 1732089 A1 20061213 - Wire wound choke coil
Title (en)
Wire wound choke coil
Title (de)
Drosselspule mit gewickeltem Draht
Title (fr)
Bobine d'arrêt munie d'enroulement à fil
Publication
Application
Priority
EP 05012257 A 20050607
Abstract (en)
A wire wound choke coil uses a metallic conductor to form a coil, the surface of the conductor is pre-plated with metallic material such as gold, silver, nickel, tin or others before covered with an insulation film on it so as to form a plated conductor enclosed with an insulated film. After forming a coil, its two terminals (electrodes) can be directly soldered to a circuit board without extra treatment after stripping off the outer film. The coil leads at two terminals are left a length slightly less than one turn so as to save the time for stripping longer insulation. After that a core with two chamfered or filleted ends, and whose outer diameter being slightly larger than the inner diameter of the coil is inserted longitudinally into the hollow cavity of the coil. By so, the core can be forcibly embraced by the resiliency of the coil without worry of parting accidentally. Besides, both end surfaces of the core are plated so that it can be easily soldered onto the circuit board.
IPC 8 full level
H01F 17/04 (2006.01)
CPC (source: EP)
H01F 17/045 (2013.01); H01F 27/292 (2013.01); H01F 27/306 (2013.01)
Citation (search report)
- [A] EP 1403887 A1 20040331 - KOMIYA KUNIFUMI [JP]
- [A] DE 4241604 A1 19940616 - KASCHKE KG GMBH & CO [DE]
- [A] US 3238485 A 19660301 - LITCHFIELD KENNETH W, et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 14 5 March 2001 (2001-03-05)
- [A] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
EP 1732089 A1 20061213; EP 1732089 B1 20081029; AT E412967 T1 20081115; DE 602005010677 D1 20081211
DOCDB simple family (application)
EP 05012257 A 20050607; AT 05012257 T 20050607; DE 602005010677 T 20050607