EP 0063168 A1 19821027 - High pressure discharge lamp apparatus.
Title (en)
High pressure discharge lamp apparatus.
Title (de)
Apparat mit Hochdruckentladungslampe.
Title (fr)
Appareil avec lampe à décharge à haute pression.
Publication
Application
Priority
EP 81103046 A 19810422
Abstract (en)
In a high pressure discharge lamp apparatus comprising a discharge tube (3) and a current limiting device (2) connected in series, an over-current protecting semiconductor switching device such as a triack (TC) is further connected in series to said discharge tube (3), the triack (TC) being controlled of its firing angle responding to an output of a current detection circuit (9) which detects a change of the lamp current through a change of the lamp voltage, and a pulse generator (4) is further connected in parallel to the discharge tube (3) and gives reignition pulse thereto at least during the zero-current period in each cycle of the lamp current.
IPC 1-7
IPC 8 full level
H05B 41/38 (2006.01); H05B 41/392 (2006.01)
CPC (source: EP)
H05B 41/38 (2013.01); H05B 41/392 (2013.01)
Citation (search report)
- DE 1150758 B 19630627 - SIEMENS AG
- US 4048543 A 19770913 - OWEN DANIEL V, et al
- US 4101809 A 19780718 - MORAIS DON
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0063168 A1 19821027; EP 0063168 B1 19861112; DE 3175621 D1 19870102
DOCDB simple family (application)
EP 81103046 A 19810422; DE 3175621 T 19810422