Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2005-05-31
2005-05-31
Philogene, Haissa (Department: 2828)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S287000, C315S2090SC, C315S194000, C323S218000, C323S212000, C361S018000
Reexamination Certificate
active
06900601
ABSTRACT:
A circuit for controlling two switches assembled in anti-parallel, comprising in series between two terminals of the anti-parallel assembly, two identical control stages respectively dedicated to each switch and between which is interposed a common impedance setting a phase angle for the turning-on of the switches, each stage comprising: a controllable current source for providing a current to a control electrode of the concerned switch; a capacitor for storing a supply voltage of at least the current source; an element of activation/deactivation of a the current source according to the voltage across the stage capacitor; and an assembly for discharging the capacitor.
REFERENCES:
patent: 3878451 (1975-04-01), Ostlund et al.
patent: 4933798 (1990-06-01), Widmayer et al.
patent: 5796599 (1998-08-01), Raonic et al.
patent: 6208126 (2001-03-01), Gonthier
patent: 6255806 (2001-07-01), Seppanen et al.
patent: 2002/0047535 (2002-04-01), Moindron
patent: 721986 (2000-07-01), None
French Search Report for FR 0213685, Aug. 21, 2003.
Graybeal Jackson Haley LLP
Jorgenson Lisa K.
Philogene Haissa
Santarelli Bryan A.
STMicroelectronics S.A.
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