Global Patent Index - EP 0985264 A1

EP 0985264 A1 2000-03-15 - COMPOSITE TRANSFORMER FOR SELF-OSCILLATOR

Title (en)

COMPOSITE TRANSFORMER FOR SELF-OSCILLATOR

Title (de)

MEHRTEILIGER TRANSFORMATOR FÜR SELBSTSCHWINGER

Title (fr)

TRANSFORMATEUR COMPOSITE POUR AUTO-OSCILLATEUR

Publication

EP 0985264 A1 (FR)

Application

EP 98925782 A

Priority

  • FR 9801047 W
  • FR 9706401 A

Abstract (en)

[origin: FR2763761A1] The invention concerns converters using a self-oscillator whereof the switching means cyclical conduction is provided by a control transformer the primary of which is series connected to the inductive resistor transferring converted energy onto the output load. The device is characterised in that it comprises a composite transformer including on the same magnetic circuit (7) or on coupled magnetic circuits, the inductive resistor (7d) and said control transformer combining the coils (7a, 7b, 7c) such that the magnetic field generated by said inductive resistor and the magnetic field generated by said control transformer primary travel along substantially perpendicular directions. Such a configuration enables the inductive resistor (7d) to preserve excellent magnification of circuit which can be advantageously used in series or parallel oscillating circuits. This economical device is applicable to all types of converters using a self-oscillator.

IPC 1-7 (main, further and additional classification)

H02M 3/338; H01F 19/04; H01F 38/02

IPC 8 full level (invention and additional information)

H01F 17/04 (2006.01); H01F 19/04 (2006.01); H02M 3/338 (2006.01)

CPC (invention and additional information)

H01F 19/04 (2013.01); H01F 17/043 (2013.01); H02M 3/338 (2013.01); H02M 2001/0064 (2013.01)

Citation (search report)

See references of WO 9854826A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

FR 2763761 A1 19981127; FR 2763761 B1 19990723; AU 7776498 A 19981230; CN 1260083 A 20000712; EP 0985264 A1 20000315; WO 9854826 A1 19981203

INPADOC legal status


2002-06-05 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011201

2002-04-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020221

2000-03-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991207

2000-03-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE