EP 0150585 A1 19850807 - Output current controller for fluorescent lamp ballast.
Title (en)
Output current controller for fluorescent lamp ballast.
Title (de)
Ausgangsstromregler für Leuchtstofflampen-Vorschaltgeräte.
Title (fr)
ContrÔleur de courant de sortie pour ballast de lampe fluorescente.
Publication
Application
Priority
US 57460284 A 19840126
Abstract (en)
One (46) of the low voltage output windings (42, 44, 46) of a standard ballast circuit (16) is coupled to one filament (60) of a pair of series connected fluorescent lamps (10 and 12) through a regulating capacitor (62) and a current rectifying diode (64) which are connected in series across such output winding (46) and in parallel to the one filament.
IPC 1-7
IPC 8 full level
H05B 41/04 (2006.01); H05B 41/232 (2006.01)
CPC (source: EP KR)
H05B 41/044 (2013.01 - EP); H05B 41/14 (2013.01 - KR); H05B 41/2325 (2013.01 - EP)
Citation (search report)
- DE 3143823 A1 19820609 - HITACHI LTD [JP]
- US 3921032 A 19751118 - HALLAY ALEXANDER ROBERT
- US 3954316 A 19760504 - LUCHETTA JULIUS FRANK
- US 3866087 A 19750211 - POWELL WALTER F
- GB 1554138 A 19791017 - WESTINGHOUSE ELECTRIC CORP
Designated contracting state (EPC)
AT BE CH DE FR IT LI LU NL SE
DOCDB simple family (publication)
GB 2153606 A 19850821; GB 8416134 D0 19840801; EP 0150585 A1 19850807; JP S60163398 A 19850826; KR 850006294 A 19851002; ZA 85545 B 19850828
DOCDB simple family (application)
GB 8416134 A 19840625; EP 84308357 A 19841130; JP 1001785 A 19850124; KR 850000468 A 19850125; ZA 85545 A 19850123