Power control
AssigneeIndice Pty Ltd
InventorsAaron Brown, James Hamond, Alex Knott
Life of this patent
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Abstract
An apparatus for driving a voltage source such as a discharge or LED lamp using a power booster receiving an AC voltage source configured through an inductor to turn on and off periodically in response to a duty cycle of a dimming control signal or a transformer starting a new cycle, for regulating a low voltage AC signal. The booster control circuitry adjusting the current feed to a determined target boost voltage according to sensed input from primarily a single comparator which compares any one of (but not limited to) a) the output boosted voltage, b) the globe current, or c) the inductor input current.
Claims24
A power control system including a circuit for boosting and/or bucking a broad range of voltage sources in a manner which is controlled by an arbitrary number of feedback sensors and using only a single point of comparison for either boosting and/or bucking, and presenting a sufficiently low impedance to said voltage sources during periods of very low operation as to ensure correct and full operation in sensitive supplies such as halogen 12V inverters and dimming circuits.
A power control system including a current limited, voltage controlled booster using only a single comparator for comparing output target booster voltage with input current;
- wherein
- when the AC input current is too low, the booster will appear as a very low impedance and it will lock the inductor to ground to provide voltage to target voltage booster enough to allow normal operation of both dimmers and electronic transformers,
- and when power resumes, either due to a transformer starting a new cycle, or a dimmer triggering, the inductor charge cycle will resume, to ensure only the required power is drawn.
An apparatus for driving a voltage source such as a discharge or LED lamp including:
- a power booster receiving an AC voltage source configured through an inductor to turn on and off periodically in response to a duty cycle of a dimming control signal or a transformer starting a new cycle, for regulating a low voltage AC signal;
- a booster control circuitry for providing a target voltage boost for discharging if at a determined target boost voltage;
- wherein the booster control circuitry adjusting the current feed to a determined target boost voltage according to sensed input current, boost voltage or globe current;
- and the booster control circuitry including a comparator for monitoring the voltage boost and if it falls below the determined target boost voltage providing current through the inductor of the power booster when it is pulled to ground, releasing when the target current is achieved, to increase target voltage boost and releasing target voltage boost if at the determined target boost voltage.
A combined discharge lamp and an apparatus for driving the discharge lamp, the discharge lamp and the apparatus further including a power control system including a circuit for boosting broad range of voltage sources in a manner which is controlled by an arbitrary number of feedback sensors and primarily using only a single point of comparison, to present a sufficiently low impedance to said voltage sources during periods of very low operation to ensure correct and full operation in sensitive supplies such as halogen 12V inverters and dimming circuits.
Dependencies are inferred from the claim text.