EP 0355298 A3 19900822 - AIR GAP IN A TRANSFORMER FOR A SWITCHING POWER SUPPLY
Title (en)
AIR GAP IN A TRANSFORMER FOR A SWITCHING POWER SUPPLY
Publication
Application
Priority
DE 3828985 A 19880826
Abstract (en)
[origin: EP0355298A2] The air gap of the ferrite core in a transformer for a switching power supply generates a magnetic stray field which can lead to eddy-current losses in adjacent copper windings. By inserting ferrite plates into the air gap, the air gap is split into a plurality of partial air gaps, so that the spatial extent of the magnetic stray field is reduced. The invention is employed particularly for switching power supplies for television sets. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 3/14 (2006.01); H01F 27/255 (2006.01)
CPC (source: EP)
H01F 3/14 (2013.01); H01F 27/255 (2013.01); H01F 27/346 (2013.01)
Citation (search report)
- [X] GB 2037089 A 19800702 - PHILIPS NV
- [AD] EP 0193057 A2 19860903 - THOMSON BRANDT GMBH [DE]
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
DE 3828985 C1 19890914; EP 0355298 A2 19900228; EP 0355298 A3 19900822
DOCDB simple family (application)
DE 3828985 A 19880826; EP 89110974 A 19890616