Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Reexamination Certificate
2007-03-27
2007-03-27
Wong, Don (Department: 2163)
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
C315S224000, C315S291000, C363S021080, C363S021100
Reexamination Certificate
active
10963533
ABSTRACT:
The invention relates to an electronic ballast for lamps having a converter, in which a switching transistor is protected against transient disturbances by a detection circuit C1, C2, R1, R2, D1–3, T1. In this case, the time derivative of the voltage is taken into consideration.
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Bessone Carlo S.
Ho Binh Van
Patent-Treuhand-Gesellschaft fuer Elektrische Gluehlampen mbH
Wong Don
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