A system for supplying a load comprising: an input inductor configured to receive an input voltage, a selection module connected to the inductor via a switching node, and a multi-level half-bridge stage comprising a plurality of half-bridge stages, each half-bridge stage comprising a pair of switches connected between a switching node; a power combining stage coupled to each half-bridge stage using parallel bus voltage lines output from the multi-level half-bridge stage, the power combining stage configured to output a voltage to the load; and a controller configured, based on the input voltage, to selectively control a half-bridge stage to operate in a half-bridge mode to provide a stepped-up voltage on a bus voltage line, wherein the controller is further configured to control the power combining stage to provide a voltage between the bus voltage lines and the sum of these voltages is higher than a peak of the input voltage.

A two-terminal IC chip and method thereof. For example, a two-terminal IC chip includes a first chip terminal and a second chip terminal. A first terminal voltage is a voltage of the first chip terminal, a second terminal voltage is a voltage of the second chip terminal, and a chip voltage is equal to a difference between the first terminal voltage and the second terminal voltage. The chip is configured to allow a chip current to flow into the chip at the first chip terminal and out of the chip at the second chip terminal, or to flow into the chip at the second chip terminal and out of the chip at the first chip terminal. The chip current is larger than or equal to zero in magnitude. The chip is further configured to change a relationship between the chip voltage and the chip current with respect to time. The chip is an integrated circuit, and the chip does not include any additional chip terminal other than the first chip terminal and the second chip terminal.

An intelligent illuminator Integrated with a luminous object, the illuminator being an independent and removable component, comprising a LED light set, a control unit, a rechargeable battery, a switch and a wireless charging module, which are assembled and sealed to form a waterproof, portable and independent illuminator; the control unit configured to control different lighting mode of the LED light set and including a wireless remote control unit, remotely controlled by a light control APP of an intelligent article; wherein the luminous object includes a transparent or semi-transparent block with light-conducting function and a light-conducting groove; the block is a shoe sole, a lamp holder or a box; the illuminator is placed in the light-conducting groove and can be removed or put in at any time, the intelligent illuminator integrated with a luminous object has the advantages of being widely used and convenient for use.

A system allows a light fixture to have a wider range of color temperatures (CCT) while limiting the warmest temperature reached at full intensity. The CCT of the light output may be controlled independently of intensity across a certain range of CCT and dependent on intensity across another range. In an implementation, both intensity and CCT may be adjusted from a single handle, where the interface positions may be divided into multiple zones. In another implementation, intensity may be adjusted from a first handle, while CCT may be adjusted from a second handle. The CCT of the light output may be limited to cooler levels when the intensity is higher, and/or the intensity of the light may be limited to lower levels when the CCT is warmer.

An adapter for connection between a luminaire and a power input for powering the luminaire comprises circuitry for modulating light output of the luminaire to contain information, or circuitry for connection to a network so that signals associated with the luminaire are communicated on the network. The adapter is placed between the luminaire and a power input for the luminaire. Methods are provided for registering and establishing communication between a gateway device and a management platform, and for registering a luminaire device with the gateway so that it can be managed by the management platform. Portions of the larger system that constitutes the remote controlled lighting system are also described, including connected wall switches, sensors, and the gateways themselves.

A dimming module includes a triggering circuit, a control signal generating circuit, a voltage converting circuit, and a linear driving circuit. The triggering circuit is configured to control a trigger delay angle of an AC input voltage according to a dimming command, in order to output a first voltage signal correspondingly. The control signal generating circuit is configured to output a control voltage according to the first voltage signal. The voltage converting circuit is configured to output a DC operating voltage having an operating level according to the first voltage signal, and output the DC operating voltage to a lighting module, in which the lighting module includes a light-emitting diode. The linear driving circuit is configured to drive the lighting module according to the control voltage.

A surface with various layers that provide wireless charging may include at least one of a top surface layer, a second layer, comprising a plurality of lights and a power grid, disposed under the top surface layer, a charging pad disposed on a portion of the power grid, and a third layer, comprising a power supply which provides power to the plurality of lights and the power grid, disposed under the second layer.

Described herein is a device comprising circuitry configured to determine, based on an input signal level, one of a first mode of operation and a second mode of operation for a light-emitting-diode (LED) driver. The circuitry activates a loop-filter associated with the first mode of operation of the LED driver in response to the input signal level being below a predetermined threshold. Moreover, the circuitry activates a pulse modulator associated with the second mode of operation of the LED driver in response to the input signal level being above the predetermined threshold.

An apparatus to drive a multi-channel light emitting diode (LED) array includes switching transistors connected to LED strings of the multi-channel LED array, error amplifiers connected to the switching transistors, each of the error amplifiers being configured to control current flowing through the LED string to have a target magnitude, and overheating protection circuits connected to the switching transistors, each of the overheating protection circuits being configured to regulate current flowing through a respective switching transistor to have a magnitude less than or equal to the target magnitude.

An exemplary land mobile radio control head and method are provided. In one embodiment, the control head has the capability to utilize halo light of the control head to implement a multi-function indicator that communicates a state of the land mobile radio. In another embodiment, the control head has the capability to provide buffer images constructed from data received from the land mobile radio into a video stream for rendering on an electroluminescent display. In another embodiment, the control head provides the capability for a user to modify a configuration stored on the land mobile radio that defines one of several display modes to be utilized in generating data for use in forming images to be rendered on an electroluminescent display.