Abstract: According to aspects of the disclosure, an uninterruptible power supply is provided comprising an input configured to be coupled to, and receive input power from, a circuit breaker, an output configured to be coupled to, and provide output power to, at least one load, an energy-storage-device interface configured to be coupled to, and receive back-up power from, an energy-storage device, and at least one controller configured to determine whether a current through the circuit breaker meets at least one over-current criterion, and control, responsive to determining that the current through the circuit breaker meets the at least one over-current criterion, the uninterruptible power supply to provide the output power to the load, the output power being derived from the input power and the back-up power.

Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.

Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.

Abstract: A battery-charging system configured to charge a battery of a device to a nominal voltage includes a load-detection circuit, memory storing controller-executable instructions, and a controller configured to execute the instructions, which cause the controller to detect a load coupled to the battery above a first threshold load using the load-detection circuit, and control the battery-charging circuit to charge the battery to a high voltage in response to detecting the load above the first threshold load, wherein the high voltage is above the nominal voltage. The controller can be configured to execute other instructions, such as outputting a notification that the battery is being charged to a high voltage and/or controlling the battery-charging circuit to discharge the battery in response to detecting a reduced load or a user command.

Abstract: According to aspects of the disclosure, an uninterruptible power supply (UPS) system is presented, the UPS System comprising at least one first input configured to be coupled to a primary power source and to a secondary power source, a second input configured to be coupled to a backup power source, an output configured to be coupled to at least one load, and at least one controller configured to receive a signal indicating that the secondary power source is prepared to provide secondary power to the UPS system, determine, responsive to receiving the signal, whether an energy level of the backup power source is above a threshold energy level, and control, responsive to determining that the energy level of the backup power source is above the threshold energy level, the UPS system to provide output power derived from the backup power source to the output.

Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.

Abstract: According to aspects of the disclosure, an uninterruptible power supply is provided comprising an input configured to be coupled to, and receive input power from, a circuit breaker, an output configured to be coupled to, and provide output power to, at least one load, an energy-storage-device interface configured to be coupled to, and receive back-up power from, an energy-storage device, and at least one controller configured to determine whether a current through the circuit breaker meets at least one over-current criterion, and control, responsive to determining that the current through the circuit breaker meets the at least one over-current criterion, the uninterruptible power supply to provide the output power to the load, the output power being derived from the input power and the back-up power.

Abstract: A battery-charging system configured to charge a battery of a device to a nominal voltage includes a load-detection circuit, memory storing controller-executable instructions, and a controller configured to execute the instructions, which cause the controller to detect a load coupled to the battery above a first threshold load using the load-detection circuit, and control the battery-charging circuit to charge the battery to a high voltage in response to detecting the load above the first threshold load, wherein the high voltage is above the nominal voltage. The controller can be configured to execute other instructions, such as outputting a notification that the battery is being charged to a high voltage and/or controlling the battery-charging circuit to discharge the battery in response to detecting a reduced load or a user command.

Abstract: Provided is a control system electrically coupled to a luminaire. The control system includes a processor for facilitating (i) luminaire control and (ii) performance of a number of advanced functions. The processor is configured to receive power from at least two power sources, wherein one of the power sources is configured to provide power responsive to a level of power provided by the other power source.

Abstract: A ballast (100) having an inverter (110,120,122) and a direct current blocking capacitor (130) coupled in series with a ballast output (108) includes a control circuit (140) for providing adaptive end-of-lamp-life protection. During operation, control circuit executes the steps of measuring (208) and storing (210) a reference value for the voltage across the DC blocking capacitor (130), monitoring (308,310) the voltage across the DC blocking capacitor (130), and protecting (312) the inverter and lamp sockets in response to the voltage across the DC blocking capacitor departing from the reference value by more than a predetermined threshold amount.

Abstract: A ballast (100) having an inverter (110,120,122) and a direct current blocking capacitor (130) coupled in series with a ballast output (108) includes a control circuit (140) for providing adaptive end-of-lamp-life protection. During operation, control circuit executes the steps of measuring (208) and storing (210) a reference value for the voltage across the DC blocking capacitor (130), monitoring (308,310) the voltage across the DC blocking capacitor (130), and protecting (312) the inverter and lamp sockets in response to the voltage across the DC blocking capacitor departing from the reference value by more than a predetermined threshold amount.

Abstract: A dimming ballast (100) for a high-intensity discharge lamp (10) includes an ignitor (120), a control circuit (140), and a dimming interface (160) for connection to an external dimming controller (30). Following lamp replacement (10), external dimming controller (30) receives a user relamp command and, in response, sends a special relamp signal to dimming interface (160). In response to the special relamp signal, dimming interface (160) communicates with control circuit (140), which directs ignitor (120) to provide high voltage pulses for igniting the replaced lamp. In an alternative embodiment, an external control device such as a triac dimmer (40) receives a user relamp command following lamp replacement and, in response, sends a special relamp signal to a control circuit (240), which directs ignitor (220) to provide high voltage pulses for igniting the replaced lamp.

Abstract: A dimming ballast (100) for a high-intensity discharge lamp (10) includes an ignitor (120), a control circuit (140), and a dimming interface (160) for connection to an external dimming controller (30). Following lamp replacement (10), external dimming controller (30) receives a user relamp command and, in response, sends a special relamp signal to dimming interface (160). In response to the special relamp signal, dimming interface (160) communicates with control circuit (140), which directs ignitor (120) to provide high voltage pulses for igniting the replaced lamp. In an alternative embodiment, an external control device such as a triac dimmer (40) receives a user relamp command following lamp replacement and, in response, sends a special relamp signal to a control circuit (240), which directs ignitor (220) to provide high voltage pulses for igniting the replaced lamp.

Abstract: A ballast (100) and method for regulating power in a high pressure discharge lamp (130) is disclosed. In a preferred embodiment, ballast (100) comprises a microcontroller (102), a buck converter (110), and an inverter (120). Microcontroller (102) monitors a signal representative of the lamp voltage and sets a current in the lamp based upon the monitored signal via control of a buck current provided by the buck converter (110). A method for regulating power in a high pressure discharge lamp is also described. The method comprises steps of detecting (202) a voltage at the lamp and setting (204) a current in the lamp based upon the detected voltage.

Abstract: A ballast (10) for powering a gas discharge lamp load includes an inverter (200) and a protection circuit (400) for preventing start up of the inverter (200) in response to a ground fault condition wherein one or more of the ballast output connections (302,306) is coupled to earth ground.

Abstract: A circuit for controlling current during run-up of a high pressure discharge lamp (140) comprises a buck converter (120) for generating a buck current to drive the high pressure discharge lamp and a control circuit (202) coupled to the buck converter (120) for varying the duty cycle of the buck current during run-up is disclosed. A method for controlling current in an electronic ballast during run-up of a high pressure discharge lamp comprises steps of detecting (501) lamp ignition, providing (502) a buck current to drive the lamp, and varying (504) the duty cycle of the buck current during run-up to control (506) the current in the lamp is also disclosed.

Abstract: A ballast (10) for powering a gas discharge lamp load includes an inverter (200) and a protection circuit (400) for preventing startup of the inverter (200) in response to a ground fault condition wherein one or more of the ballast output connections (302,306) is coupled to earth ground.

Abstract: A ballast (100) and method for regulating power in a high pressure discharge lamp (130) is disclosed. In a preferred embodiment, ballast (100) comprises a microcontroller (102), a buck converter (110), and an inverter (120). Microcontroller (102) monitors a signal representative of the lamp voltage and sets a current in the lamp based upon the monitored signal via control of a buck current provided by the buck converter (110). A method for regulating power in a high pressure discharge lamp is also described. The method comprises steps of detecting (202) a voltage at the lamp and setting (204) a current in the lamp based upon the detected voltage.

Abstract: A circuit for controlling current during run-up of a high pressure discharge lamp (140) comprises a buck converter (120) for generating a buck current to drive the high pressure discharge lamp and a control circuit (202) coupled to the buck converter (120) for varying the duty cycle of the buck current during run-up is disclosed. A method for controlling current in an electronic ballast during run-up of a high pressure discharge lamp comprises steps of detecting (501) lamp ignition, providing (502) a buck current to drive the lamp, and varying (504) the duty cycle of the buck current during run-up to control (506) the current in the lamp is also disclosed.