Circuit arrangement for igniting a high pressure discharge lamp

Details Circuit arrangement for igniting a high pressure discharge lamp Circuit arrangement for igniting a high pressure discharge lamp

1997-09-03

1998-12-01

Wong, Don

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Discharge control discharge device load

315272, 315310, 315209R, 315DIG5, 315DIG7, H05B 4116

Patent

active

058443797

ABSTRACT:
The invention relates to a circuit arrangement for operating a high-pressure discharge lamp. A buffer capacitor is shunted by a branch which comprises a series circuit of a second capactor and a unidirectional element for blocking a current with which the second capacitor charges the buffer capacitor Re-ignition after a zero crossing of the low-frequency alternating current has a comparatively high amplitude so that the lamp re-ignites in a reliable manner.

REFERENCES:
patent: 4695770 (1987-09-01), Raets
patent: 5319286 (1994-06-01), Leyten
patent: 5514938 (1996-05-01), Zaaijer et al.
patent: 5534753 (1996-07-01), Blom et al.

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