EP 0330118 A3 19910227 - DRIVE CIRCUITRY FOR A LOW-PRESSURE DISCHARGE LAMP
Title (en)
DRIVE CIRCUITRY FOR A LOW-PRESSURE DISCHARGE LAMP
Publication
Application
Priority
DE 3805510 A 19880222
Abstract (en)
[origin: EP0330118A2] In the circuit arrangement for high-frequency operation of a low-]pressure discharge lamp (LP), having a mains rectifier (2) and a push-pull frequency generator (3) with a series-resonant circuit and a switch-off device, the electrode (E2) connected to the positive or negative terminal of the mains rectifier (2) is connected between the mains rectifier (2) and the push-pull frequency generator (3). As a result of this connection of the electrode (E2), when the low-pressure discharge lamp (LP) is replaced, the circuit is interrupted and the switch-off circuit is inhibited. On insertion of a new lamp, the circuit is closed again so that the low-pressure discharge lamp (LP) can be started automatically again by means of the push-pull frequency generator (3). <IMAGE>
IPC 1-7
IPC 8 full level
H05B 41/298 (2006.01)
CPC (source: EP US)
H05B 41/2985 (2013.01 - EP US); Y10S 315/05 (2013.01 - EP US)
Citation (search report)
- [X] EP 0198632 A2 19861022 - LEE CHWEE TOR [MY], et al
- [AD] EP 0239793 A1 19871007 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]
- [APD] EP 0276460 A1 19880803 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH [DE]
- [A] EP 0056889 A1 19820804 - HWANG TOP PING [TW], et al
- [A] WO 8200561 A1 19820218 - SIEMENS AG [DE], et al
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0330118 A2 19890830; EP 0330118 A3 19910227; DE 3805510 A1 19890831; FI 885273 A0 19881115; FI 885273 A 19890823; US 4949013 A 19900814
DOCDB simple family (application)
EP 89102899 A 19890220; DE 3805510 A 19880222; FI 885273 A 19881115; US 31152589 A 19890216