DUAL POWER SMPS FOR A MODULAR LIGHTING SYSTEM
First Claim
1. A light assembly comprising;
- a first input to receive power from a power source;
a controllable power supply having a control input, a power input coupled to the first input, and an output to provide an output voltage having a voltage level controllable based on a control signal received at the control input;
a battery input coupled to the output of the controllable power supply, and configured to couple to a battery;
a light circuit coupled to the output of the controllable power supply and configured to provide output light in response to the output voltage; and
a feedback circuit configured to detect a current to the battery and a voltage across the battery and having an output coupled to the control input of the controllable power supply to provide the control signal to the controllable power supply based on at least one of the current to the battery input and the voltage across the battery.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and systems described herein provide efficient lighting where electric grid systems are unreliable. One as-peel includes a light assembly that includes an input to receive power from a power source, a controllable power supply having a control input, a power input coupled to the first input, and an output to provide a voltage level controllable based on a control signal received at the control input, a light circuit coupled to the output of the controllable power supply and configured to provide output light in response to the output voltage, a feedback circuit configured to detect a current to a battery and a voltage across the battery and having an output coupled to the control input of the controllable power supply to provide the control signal to the controllable power supply based on at least one of the current to the battery input and the voltage across the battery.
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Citations
20 Claims
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1. A light assembly comprising;
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a first input to receive power from a power source; a controllable power supply having a control input, a power input coupled to the first input, and an output to provide an output voltage having a voltage level controllable based on a control signal received at the control input; a battery input coupled to the output of the controllable power supply, and configured to couple to a battery; a light circuit coupled to the output of the controllable power supply and configured to provide output light in response to the output voltage; and a feedback circuit configured to detect a current to the battery and a voltage across the battery and having an output coupled to the control input of the controllable power supply to provide the control signal to the controllable power supply based on at least one of the current to the battery input and the voltage across the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling operation of a light assembly comprising:
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receiving power from a power source; generating a DC voltage derived from the received power, the DC voltage having a voltage level; applying the DC voltage to a light circuit; applying the DC voltage to the battery; detecting a current to the battery; detecting a voltage across the battery; and controlling the voltage level based on at least one of the current to the battery and the voltage across the battery. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A light assembly comprising:
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at least one input to receive power from a power source; a controllable power supply having a control input, a power input coupled to the at least one input, and an output; a battery input coupled to the output of the controllable power supply; a light circuit coupled to the output of the controllable power supply and configured to provide output light; and means for controlling the power supply to provide a regulated voltage to the light circuit and regulated charging current and charging voltage to a battery coupled to the battery input. - View Dependent Claims (17, 18, 19, 20)
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Specification