DC digital starting device

Details DC digital starting device DC digital starting device

2008-07-08

2008-07-08

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S309000

Reexamination Certificate

active

11520601

ABSTRACT:
A DC digital starting device includes a voltage-increasing circuit, a first feedback control circuit, a frequency-varying circuit, and a second feedback control circuit. The voltage-increasing circuit provides a voltage for a load in a starting state and a normal working state. The first feedback control circuit detects voltage signals of the voltage-increasing circuit and the load and controls output voltage of the voltage-increasing circuit. The frequency-varying circuit is electrically connected to the voltage-increasing circuit for modulating frequency of the output voltage of the voltage-increasing circuit. The second feedback control circuit receives a voltage signal from the frequency-varying circuit and controls frequency of output voltage of the frequency-varying circuit.

REFERENCES:
patent: 5751120 (1998-05-01), Zeitler et al.
patent: 6198234 (2001-03-01), Henry
patent: 7061189 (2006-06-01), Newman et al.
patent: 7119494 (2006-10-01), Hui et al.
patent: 2004/0047166 (2004-03-01), Lopez-Santillana et al.
patent: 2006/0175983 (2006-08-01), Crouse et al.

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