Electronic ballast with phase dimmer detection

Details Electronic ballast with phase dimmer detection Electronic ballast with phase dimmer detection

2011-03-22

2011-03-22

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S2090SC, C315SDIG002

Reexamination Certificate

active

07911154

ABSTRACT:
The invention relates to an electronic ballast comprising a converter which is used to operate a discharge lamp, for example, a low pressure discharge lamp, for selectively operating, in a direct manner, the supply network or a phase section dimmer. Jumps in the supply voltage are decoupled by a differential which is connected between at least one of the network lines and the reference potential of the ballast and transmitted to a control of the ballast, such that the control of the converter can distinguish between the operation on the phase section dimmer and on the network supply.

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patent: 7129648 (2006-10-01), Fischer et al.
patent: 7132802 (2006-11-01), Fischer et al.
patent: 2002/0033679 (2002-03-01), Hui et al.
patent: EP-679048 (1995-10-01), None
patent: 0 450 728 (1991-01-01), None
patent: 0 769 855 (1997-04-01), None
patent: 1 456 330 (2004-10-01), None

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