Complementary application specific integrated circuit for...

Details Complementary application specific integrated circuit for... Complementary application specific integrated circuit for...

2011-06-07

2011-06-07

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Periodic-type current and/or voltage regulator in the supply...

C315S224000, C315S291000

Reexamination Certificate

active

07956550

ABSTRACT:
In a lighting ballast there are typically several discrete components that combine to take an external AC signal and convert it to a DC signal, and back to an AC signal for powering a lamp. Several of these components can be housed on an application specific integrated circuit. By placing switching transistors (20, 22) their companion diodes (34, 36), and a rectifying circuit (52) on a monolithic integrated circuit (60), the ballast circuit as a whole is made more reliable and robust and can be manufactured at a lower cost than if discrete components had been used.

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PCT/US2009/031856 International Search Report, mailed Apr. 4, 2009.

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