Control system for fluorescent light fixture
AssigneeMarvell World Trade Ltd.
InventorSehat Sutardja
Life of this patent
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Abstract
A circuit includes a component connected (i) to a rectifier, and (ii) between electrodes of a lamp. The electrodes include a first electrode and a second electrode. A control module is in communication with the rectifier and is configured to receive a temperature signal from a temperature sensor. The temperature signal is indicative of a temperature of the component. The control module is also configured to decrease current to the electrodes for a predetermined period when the temperature of the component is greater than a first predetermined temperature. The control module is further configured to increase the current to the electrodes when the predetermined period expires and independent of the temperature of the component.
Claims20
A circuit comprising:
- a component connected (i) to a rectifier, and (ii) between a plurality of electrodes of a lamp, wherein the plurality of electrodes comprises a first electrode and a second electrode;
- and
- a control module in communication with the rectifier and configured to
- receive a temperature signal from a temperature sensor, wherein the temperature signal is indicative of a temperature of the component,
- decrease current to the plurality of electrodes for a predetermined period when the temperature of the component is greater than a first predetermined temperature, and
- increase the current to the plurality of electrodes when the predetermined period expires and independent of the temperature of the component.
A method comprising:
- operating a control module based on an output of a rectifier;
- receiving a temperature signal from a temperature sensor by the control module, wherein the temperature signal is indicative of a temperature of a component, wherein the component is connected (i) to the rectifier, and (ii) between a plurality of electrodes of a lamp, wherein the plurality of electrodes include a first electrode and a second electrode;
- decreasing current to the plurality of electrodes for a predetermined period via the control module when the temperature of the component is greater than a first predetermined temperature;
- and
- increasing the current to the plurality of electrodes via the control module when the predetermined period expires independent of the temperature of the component.
Dependencies are inferred from the claim text.