Discharge lamp lighting circuit

Details Discharge lamp lighting circuit Discharge lamp lighting circuit

2008-05-27

2008-05-27

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch in the primary circuit of the supply...

C315S274000, C315S224000, C315S279000, C315S2090SC

Reexamination Certificate

active

07378802

ABSTRACT:
A circuit includes a transformer7for transmitting power to a discharge lamp10and for supplying a starting signal to the discharge lamp. The circuit includes a direct current-alternating current converting circuit3for supplying an output of the transformer7to the discharge lamp10after carrying out a direct current-alternating current conversion, and a starting circuit4for applying the starting signal to the discharge lamp10.A primary side of the transformer7has a first capacitor11,a circuit portion13including a rectifying element, and a switching element14. The transformer7has an auxiliary winding7vfor supplying a voltage for generating the starting signal to the starting circuit. A second capacitor12is interposed between the auxiliary winding and the circuit portion13and prevents absorption of energy by the capacitor11in generating the starting signal and prevents attenuation of the starting signal.

REFERENCES:
patent: 7245087 (2007-07-01), Nishikawa et al.
patent: 11-135278 (1999-05-01), None

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