EP 0866646 A3 20000531 - Process and circuit for operating at least one discharge lamp
Title (en)
Process and circuit for operating at least one discharge lamp
Title (de)
Verfahren und Schaltungsanordnung zum Betrieb mindestens einer Entladungslampe
Title (fr)
Procédé et circuit pour alimenter au moins une lampe à décharge
Publication
Application
Priority
DE 19711183 A 19970318
Abstract (en)
[origin: EP0866646A2] The method involves using a lamp with a gastight closed discharge vessel with an ionisable filling and electrodes inside between which a gas discharge is formed. The lamp are operated to create a tail lamp with a first, minimal electrical power and a signalling lamp with a second, higher electrical power. Preferably, the second, higher power is at least twice the size as the first minimal power. The signalling lamp is a stop lamp. The ionisable filling of the lamp contains neon. The lamps are fed by a medium frequency supply voltage and an operating parameter is controlled by pulse width modulation.
IPC 1-7
IPC 8 full level
H05B 41/36 (2006.01); H05B 41/392 (2006.01); H05B 41/42 (2006.01)
CPC (source: EP US)
H05B 41/36 (2013.01 - EP US); H05B 41/3927 (2013.01 - EP US); H05B 41/42 (2013.01 - EP US)
Citation (search report)
- [YA] GB 2059693 A 19810423 - WERNER K H J
- [A] EP 0449667 A2 19911002 - BERTONEE INC [CA]
- [A] EP 0488002 A1 19920603 - HOLZER WALTER [DE]
- [Y] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 01 28 February 1995 (1995-02-28)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0866646 A2 19980923; EP 0866646 A3 20000531; CA 2232328 A1 19980918; DE 19711183 A1 19980924; HU 219249 B 20010328; HU 9800595 D0 19980528; HU P9800595 A2 19981028; HU P9800595 A3 20000328; JP H10270190 A 19981009; US 6411040 B1 20020625
DOCDB simple family (application)
EP 98103764 A 19980304; CA 2232328 A 19980317; DE 19711183 A 19970318; HU P9800595 A 19980317; JP 8293998 A 19980313; US 4077298 A 19980318