POWER SUPPLY FOR AIRFIELD LIGHTING
First Claim
Patent Images
1. An apparatus, comprising:
- a current sensor for measuring an input current;
a split winding inductor having an input coupled with the current sensor, and an output;
a half active bridge rectifier having a first input coupled with the output of the split winding inductor, a second input, and an output; and
a controller having a first input coupled with the current sensor, a second input coupled with the output of the half active bridge rectifier, and an output coupled with the second input of the half active bridge rectifier;
wherein the controller provides a control signal to the half active bridge rectifier to produce a voltage at the output of the half active bridge rectifier to provide power to at least one light emitting diode.
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Abstract
Disclosed herein is a power supply suitable for use with an airfield lighting device. In accordance with an example embodiment, there is disclosed herein, a rectifier that converts a signal from an alternating current (AC) current source to a direct current (DC) voltage. The circuit comprises a current sensor, a controller, and a half active bridge rectifier. The controller receives a signal from the current sensor and controls the operation of the half active bridge rectifier to produce a light emitting diode (LED) current based on the current sensed by the current sensor.
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Citations
20 Claims
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1. An apparatus, comprising:
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a current sensor for measuring an input current; a split winding inductor having an input coupled with the current sensor, and an output; a half active bridge rectifier having a first input coupled with the output of the split winding inductor, a second input, and an output; and a controller having a first input coupled with the current sensor, a second input coupled with the output of the half active bridge rectifier, and an output coupled with the second input of the half active bridge rectifier; wherein the controller provides a control signal to the half active bridge rectifier to produce a voltage at the output of the half active bridge rectifier to provide power to at least one light emitting diode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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a controller; a light source coupled with the controller; an input for receiving a clocking signal from an external lighting device coupled to the controller; and a phantom load coupled across the input; wherein the controller synchronizes flashing the light source with the clocking signal received from the input. - View Dependent Claims (14, 15, 16, 17)
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18. An apparatus, comprising:
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a current sensor for measuring an input current; a split winding inductor having an input coupled with the current sensor, and an output; means for producing a voltage from a current received from the split winding inductor; and control means for controlling the means for producing a voltage, the control means receives a measurement of the input current from the sensor and provides a control signal to the means for producing a voltage to achieve an output voltage based on the measurement of the input current. - View Dependent Claims (19, 20)
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Specification