Low noise electroluminescent lamp (EL) driver and method...

Details Low noise electroluminescent lamp (EL) driver and method... Low noise electroluminescent lamp (EL) driver and method...

2007-02-20

2009-06-30

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S246000, C315S2090SC, C315S291000, C315S224000

Reexamination Certificate

active

07554272

ABSTRACT:
An EL driver circuit has a full H-bridge circuit. A boost converter is coupled to the full H-bridge circuit. The boost converter is pulse width modulated to generate a gradual increase in voltage to be applied to the full H-bridge circuit to drive an EL lamp.

REFERENCES:
patent: 5465029 (1995-11-01), Hanazaki et al.
patent: 5626619 (1997-05-01), Jacobson et al.
patent: 5686797 (1997-11-01), Sanderson
patent: 2004/0120090 (2004-06-01), Galli et al.

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