EP 0484074 A2 19920506 - High-frequency, high-leakage-reactance transformer.
Title (en)
High-frequency, high-leakage-reactance transformer.
Title (de)
Hochfrequenztransformator mit Reaktanz mit hohem Streufeld.
Title (fr)
Transformateur à haute fréquence avec réactance à champ de dispersion fort.
Publication
Application
Priority
US 60454990 A 19901029
Abstract (en)
A high-frequency, high-leakage-reactance transformer has a section of low-permeability magnetic material disposed between planar primary and secondary windings. The low-permeability section provides a controlled flux path for the leakage flux between the primary and secondary windings. Excessive eddy currents are thus prevented from flowing in the planar windings, and high-efficiency operation is achieved. The high-leakage-reactance transformer can function both as a transformer and an inductor, thereby reducing the size of, for example, a resonant power supply or a discharge lamp ballast. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 38/08 (2006.01); H01F 38/10 (2006.01)
CPC (source: EP)
H01F 38/10 (2013.01); H01F 2027/348 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0484074 A2 19920506; EP 0484074 A3 19930224; CA 2053648 A1 19920430; JP H04283909 A 19921008
DOCDB simple family (application)
EP 91309923 A 19911028; CA 2053648 A 19911017; JP 30724491 A 19911028