EP 0066754 A1 19821215 - Electronic mains connection device for a gas-discharge lamp.
Title (en)
Electronic mains connection device for a gas-discharge lamp.
Title (de)
Elektronische Vorrichtung zum Anschliessen einer Gasentladungslampe an das Stromnetz.
Title (fr)
Appareil électronique pour connecter une lampe à décharge au réseau.
Publication
Application
Priority
FI 811774 A 19810608
Abstract (en)
An electronic mains connection device for a gas-discharge lamp, acting as a stabilizing current limiting element and comprising an inverter circuit which from rectified mains current or from some other direct current converts the service voltage for a lamp to such a high frequency that the impedance of a discharge lamp is like normal resistance. A problem is to provice a stable current limitation without current limiting impedances, whereby the limitation of a current can be arranged to be effected only by means of the lamp's own resistance-like impedance on both half-cycles. For this end, the limitation of a current is effected during a period longer than a cycle of inverter operation by means of a feed-back control (7, 8) of the lamp current controlling the opening times and/or operating frequency of the switches (3, 5) of said inverter circuit.
IPC 1-7
IPC 8 full level
H05B 41/392 (2006.01); H05B 41/24 (2006.01); H05B 41/292 (2006.01)
CPC (source: EP)
H05B 41/2926 (2013.01)
Citation (applicant)
- US 3629648 A 19711221 - BROWN BRENT W, et al
- US 3906302 A 19750916 - WIJSBOOM DAN BERNARDUS
- US 4168453 A 19790918 - GERHARD FRANCIS H, et al
Citation (search report)
- [X] US 3999100 A 19761221 - DENDY KING HUBERT, et al
- [X] FR 2451696 A1 19801010 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0066754 A1 19821215; EP 0066754 B1 19860102; AU 560792 B2 19870416; AU 8462182 A 19821216; BR 8203443 A 19830607; DE 3268249 D1 19860213; FI 63314 B 19830131; FI 63314 C 19830510; FI 811774 A0 19810608; JP S581997 A 19830107
DOCDB simple family (application)
EP 82104449 A 19820521; AU 8462182 A 19820607; BR 8203443 A 19820607; DE 3268249 T 19820521; FI 811774 A 19810608; JP 9748182 A 19820607