Abstract: A digital dimmable driver system includes an alternating current input, a phase cut dimmer operable to perform a phase cut operation on a waveform from the alternating current input, a rectifier operable to rectify an output of the phase cut dimmer, a phase processor operable to detect a phase angle on-time of the phase cut dimmer, and a driver circuit operable to produce an output current proportional to the phase angle on-time.

Abstract: A digital dimmable driver system includes an alternating current input, a dimmer operable to perform a phase cut operation on a waveform from the alternating current input, a driver circuit operable to switch from a dimming mode to a universal voltage input mode based on a phase angle of the dimmer, and a power output operable to power a light.

Abstract: An apparatus for low current thyristor-based dimming includes a thyristor, a secondary load switchably connected to an output of the thyristor, and a sensor connected to the secondary load. The sensor is adapted to connect the secondary load to the thyristor when the output of the thyristor falls below a predetermined level.

Abstract: Various apparatuses and methods for starting a thyristor are disclosed herein. For example, some embodiments provide an apparatus for controlling power to a load. The apparatus includes a thyristor, a secondary load switchably connected to an output of the thyristor, and a sensor connected to the secondary load. The sensor is adapted to connect the secondary load to the thyristor when the output of the thyristor falls below a predetermined level.

Abstract: Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a controller connected to the power supply and the at least one LED in each of a plurality of colors. The controller is adapted to adjust current levels to the at least one LED in each of a plurality of colors to produce a blended color. The controller is also adapted to adjustably vary an intensity of the blended color without substantially changing the blended color.

Abstract: Various embodiments of a dimmable power supply are disclosed herein. For example, some embodiments provide a dimmable power supply including an input current path, a switch in the input current path, an energy storage device connected to the input current path, a load output connected to the energy storage device, and a timer-based variable pulse generator connected to a control input of the switch. The timer-based variable pulse generator is adapted to generate a stream of pulses having a variable on-time and off-time. The dimmable power supply is adapted to vary the on-time and off-time to control a current at the load output.

Abstract: An LED driver with current limiter and output ripple reduction.

Abstract: A digital dimmable driver system includes an alternating current input, a dimmer operable to perform a phase cut operation on a waveform from the alternating current input, a driver circuit operable to switch from a dimming mode to a universal voltage input mode based on a phase angle of the dimmer, and a power output operable to power a light.

Abstract: A powerline control interface includes a powerline connection, a level shifter connected to the powerline connection, the level shifter having a zero crossing detector signal output, a capacitor connected to the powerline connection, an inductor connected to the powerline connection, and a receive signal inductively coupled to the inductor.

Abstract: Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a controller connected to the power supply and the at least one LED in each of a plurality of colors. The controller is adapted to adjust current levels to the at least one LED in each of a plurality of colors to produce a blended color. The controller is also adapted to adjustably vary an intensity of the blended color without substantially changing the blended color.

Abstract: Various embodiments of a dimmable power supply are disclosed herein. For example, some embodiments provide a dimmable power supply including an input current path, a switch in the input current path, an energy storage device connected to the input current path, a load output connected to the energy storage device, and a timer-based variable pulse generator connected to a control input of the switch. The timer-based variable pulse generator is adapted to generate a stream of pulses having a variable on-time and off-time. The dimmable power supply is adapted to vary the on-time and off-time to control a current at the load output.

Abstract: Various embodiments of an LED dimming driver are disclosed herein. In some embodiments, an apparatus for dimmably driving at least one load includes a power supply having a voltage output, a controller having at least one current setpoint output, and at least one driver channel circuit connected to the voltage output of the power supply and to at least one of the at least one current setpoint outputs, the at least one driver channel circuit having a load output.

Abstract: Various embodiments of a fluorescent lamp power supply are disclosed herein. In one embodiment, a power supply includes a power input connected to a pulse generator. The power supply also includes a filter connected to a variable pulse width output on the pulse generator and to the power input. The filter is adapted to substantially block at least one harmonic frequency component of the variable pulse width output and to substantially pass a fundamental frequency component of the variable pulse width output. The power supply also includes a power output connected to the filter, wherein an amplitude at the power output is related to the pulse width at the variable pulse width output.

Abstract: A dimmer for dimmable drivers.

Abstract: Various embodiments of an LED dimming driver are disclosed herein. In some embodiments, an apparatus for dimmably driving at least one load includes a power supply having a voltage output, a controller having at least one current setpoint output, and at least one driver channel circuit connected to the voltage output of the power supply and to at least one of the at least one current setpoint outputs, the at least one driver channel circuit having a load output.

Abstract: A dimmable driver is disclosed with multiple channels, universal dimming over multiple input voltage ranges and a web-based user interface for dimming settings.

Abstract: Various embodiments of a fluorescent lamp power supply are disclosed herein. In one embodiment, a power supply includes a power input connected to a pulse generator. The power supply also includes a filter connected to a variable pulse width output on the pulse generator and to the power input. The filter is adapted to substantially block at least one harmonic frequency component of the variable pulse width output and to substantially pass a fundamental frequency component of the variable pulse width output. The power supply also includes a power output connected to the filter, wherein an amplitude at the power output is related to the pulse width at the variable pulse width output.

Abstract: A fluorescent lamp dimmer is disclosed herein, which may dimmably power one or more fluorescent lamps. The fluorescent lamp dimmer includes a fluorescent lamp power output, at least one fluorescent lamp heater output, a dimmable current source operable to yield a controllable constant current, a current-fed inverter operable to power the fluorescent lamp output from the controllable constant current, and a heater circuit operable to power the at least one fluorescent lamp heater output. The heater circuit provides power at a substantially constant level while the controllable constant current is variable.

Abstract: Various embodiments of a universal dimmer are disclosed. In one embodiment of a universal dimmer, a power limiting switch is connected to an input voltage. An output driver in the universal dimmer includes a power input and a load path, with the power input being connected to the input voltage. A variable pulse generator includes a control input and a pulse output, with the control input connected to a control input of the power limiting switch. The pulse output is connected to a control input of the power limiting switch.

Abstract: A dimmable LED driver with multiple power sources.