Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Discharge control discharge device load
Patent
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.
Hendriks Theodorus M.
Stommen Theodorus H.
Blocker Edward
Philogene Haissa
U.S. Philips Corporation
Wong Don
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