Low loss input channel detection device for a direct current...

Details Low loss input channel detection device for a direct current... Low loss input channel detection device for a direct current...

2011-03-15

2011-03-15

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Special application

Vehicle

C315S224000, C315S307000

Reexamination Certificate

active

07906913

ABSTRACT:
A device used with a direct current power source for energizing a lamp. The device includes a plurality of input channels selectively connected to the power source for providing current to the lamp. For each input channel, the device includes a corresponding current sensing component connected to the input channel, and a corresponding bypass switch connected in parallel with the current sensing component. Each current sensing component produces a measurable signal as a function of current that is provided by the corresponding input channel. The device includes a controller connected to the current sensing components and the bypass switches. The controller identifies the input channel that is providing current to the lamp as a function of the measurable signals and controls the bypass switches based on the identified input channel. Particularly, the controller operates each bypass switch in a closed mode when the corresponding input channel is the identified channel so that current provided by the corresponding identified input channel bypasses the current sensing component.

REFERENCES:
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patent: 2004/0036418 (2004-02-01), Rooke et al.
patent: 2005/0057162 (2005-03-01), Kover, Jr. et al.
patent: 2010/0052569 (2010-03-01), Hoogzaad et al.
patent: 2006/063552 (2006-06-01), None
International Search Report for PCT Application No. PCT/US2009/039306 dated Jun. 30, 2010, 7 pages.

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