Abstract: Some embodiments include a nanosecond pulser circuit. In some embodiments, a nanosecond pulser circuit may include: a high voltage power supply; a nanosecond pulser electrically coupled with the high voltage power supply and switches voltage from the high voltage power supply at high frequencies; a transformer having a primary side and a secondary side, the nanosecond pulser electrically coupled with the primary side of the transformer; and an energy recovery circuit electrically coupled with the secondary side of the transformer. In some embodiments, the energy recovery circuit comprises: an inductor electrically coupled with the high voltage power supply; a crowbar diode arranged in parallel with the secondary side of the transformer; and a second diode disposed in series with the inductor and arranged to conduct current from a load to the high voltage power supply.

Abstract: In accordance with various embodiments, lighting systems features one or more inter-connectable light panels each having multiple light-emitting elements thereon. One or more of the light panels may feature one or more connectors, and associated conductors, for the transmission of power, communication signals, and/or control signals. One or more of the light panels may include sound-absorbing material therebelow and may define one or more apertures and/or cut-out regions that reveal the sound-absorbing material.

Abstract: The present disclosure provides lighting systems, which may be semiconductor light emitting devices, with two or more of blue, red, short-blue-pumped cyan, long-blue-pumped cyan, yellow, and violet channels. The lighting systems can have a plurality of operational modes that provide different biological effects while having good color rendering capability. The yellow and violet channels can include violet LEDs and be used in operational modes that provide white light with lower EML values relative to operational modes using three or more of the blue, red, short-blue-pumped cyan, and long-blue-pumped cyan color channels. The yellow, red, and violet channels can be used in an operational mode to provide low EML values while providing white light between about 1800K and about 3500K CCT.

Abstract: The present disclosure provides a light bulb apparatus for changing a color temperature of a luminaire using an encoded alternating current (AC) power signal transmitted from a lighting control system to the luminaire electrically coupled to the light bulb apparatus, wherein the color temperature is encoded with a cut phase of the AC power signal.

Abstract: A plasma generation system capable of more accurately measuring the actual temperature of a plasma gas applied to a target object. The plasma generation system includes: an emitting head configured to generate plasma gas by supplying power to electrodes provided in a reaction chamber to generate a plasma gas by converting a processing gas into plasma, and apply the generated plasma gas to a target object; and a temperature sensor configured to detect a temperature of the plasma gas and output a detection signal corresponding to the detected temperature. The temperature sensor is arranged at a position separated from an emission port of the emitting head from which the plasma gas is emitted. The emitting head is configured to be movable between the target object the temperature sensor.

Abstract: A load control system for controlling a plurality of lighting loads located in a space may be configured to track the location of one or more tracked devices. The load control system may comprise a system controller, lighting control devices, e.g., for controlling a plurality of lighting loads, and tracked devices. The tracked devices may each transmit beacon messages. The lighting control devices may receive the beacon message. The lighting control devices may measure a communication quality metric of each of the beacon messages, and process the measured communication quality metrics received over a period of time to determine a processed communication quality metric for the tracked device. The lighting control devices may transmit tracking data to the system controller. The system controller may determine a location of the tracked device. For example, the system controller may determine the location of the tracked device via trilateration.

Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a phase detector configured to process information associated with a rectified voltage generated by a rectifier and related to a TRIAC dimmer, the rectified voltage corresponding to a first waveform during a first half cycle of an AC voltage and corresponding to a second waveform during a second half cycle of the AC voltage, the phase detector being further configured to generate a phase detection signal representing a first time duration during which the first waveform indicates that the rectified voltage is larger than a predetermined threshold and representing a second time duration during which the second waveform indicates that the rectified voltage is larger than the predetermined threshold; and a mode detector configured to process information associated with the rectified voltage.

Abstract: The disclosure provides an intelligent lamp controller device for wirelessly controlling a lamp. The intelligent lamp controller device includes: at least one button, configured to receive a user's operation; a main control circuit board, configured to generate a lamp control instruction according to the user's operation received by the at least one button; a control instruction transmitter, electrically connected to the main control circuit board, and configured to receive the lamp control instruction from the main control circuit board and wirelessly transmit the lamp control instruction to the lamp, to control the lamp to emit light; and a preview light source, electrically connected to the main control circuit board, and configured to emit light according to the user's operation under control of the main control circuit board, so as to exhibit a luminescence effect corresponding to the user's operation to the user.

Abstract: A lighting system for temporal, irradiance-controlled photoacclimation includes a photoacclimation controller configured to generate control signals based on a photoacclimation schedule, a user interface configured to receive user input to the photoacclimation controller, the photoacclimation schedule based on the user input, a plurality of luminaires configured to emit light suitable for photosynthesis in plants at a plurality of different selectable levels of light output, and a communications network via which the control signals are provided to the plurality of luminaires, the luminaires adjusting the light output in response to the control signals.

Abstract: A load control device for controlling power delivered from an alternating-current power source to an electrical load may comprise a controllably conductive device, a control circuit, and an overcurrent protection circuit that is configured to be disabled when the controllably conductive device is non-conductive. The control circuit may be configured to control the controllably conductive device to be non-conductive at the beginning of each half-cycle of the AC power source and to render the controllably conductive device conductive at a firing time during each half-cycle (e.g., using a forward phase-control dimming technique). The overcurrent protection circuit may be configured to render the controllably conductive device non-conductive in the event of an overcurrent condition in the controllably conductive device.

Abstract: A device includes an analog current division circuit configured to divide an input current into a first current and a second current, and a multiplexer array including a plurality of switches to provide the first current to a first of three colors of LEDs and the second current to a second of three colors of LEDs simultaneously during a first portion of a period, the first current to the second of three colors of LEDs and the second current to a third of three colors of LEDs simultaneously during a second portion of the period, and the first current to the first of three colors of LEDs and the second current to the third of three colors of LEDs simultaneously during a third portion of the period.

Abstract: Two-wire dimmer operation includes controlling conduction of power to a lighting load. In one aspect, based on a conduction angle adjustment, power supply voltage is monitored and a maximum conduction angle is established based thereon. In another aspect, a dimming level signal is received and a dimming level for a dimmer is set based on the received dimming level. The dimming level signal indicates a desired dimming level for a dimmer, and a maximum value for the dimming level signal is based on a dimmer power supply voltage. In yet another aspect, based on detecting an adjustment to increase a conduction angle of a dimmer, the conduction end angle is increased and the conduction start angle is also increased. This results in a net increase in the conduction angle for controlling operation of the dimmer.

Abstract: The invention relates to a system and method for determining a status of plants. The system includes a light transmitter arranged for providing broad band illumination to one or more plants. The system includes a light receiver including a plurality of receiver channels, the receiver channels arranged for receiving light from said one or more plants in mutually different wavelength bands. The system includes a processing unit arranged for determining a status of said one or more plants on the basis of light received by the plurality of receiver channels. The transmitter may be arranged for transmitting bursts of modulated light.

Abstract: A method for control of a light fixture, the method including energizing the light fixture to produce a first light output with a first chromaticity and a first spectral power distribution, receiving a user input representative of a desired adjustment of a lighting effect, generating a target spectrum based on the user input, and energizing the light fixture to produce a second light output with the first chromaticity and a second spectral power distribution. The second power distribution approximates the target spectrum.

Abstract: In an embodiment, an electromagnetic device, comprises a substrate a substrate comprising a dielectric layer and a first conductive layer; at least one dielectric structure comprising at least one non-gaseous dielectric material that forms a first dielectric portion that extends outward from the first side of the substrate, the first dielectric portion having an average dielectric constant and an optional second dielectric portion that extends into an optional via. The at least one dielectric structure is bonded to the substrate by at least one of: a mechanical interlock between the second dielectric portion and the substrate due to the at least one interlocking slot comprising a retrograde surface; an intermediate layer located in between the dielectric structure and the substrate having a roughened surface; or an adhesive material located in between the dielectric structure and the substrate.

Abstract: A portable work light is disclosed that provides jobsite lighting and also operate as a security camera for the jobsite. The portable work light comprises a light fixture having one or more rotational degrees of freedom that can be actuated to adjust an orientation of the light fixture. The portable work light advantageously further comprises a camera 14, which provides security features for the jobsite during non-working hours and enables automatic adjustment of the light fixture to maintain optimal illumination of the jobsite during working hours. In this way, security at the jobsite, particularly during non-working hours, can be greatly improved using jobsite equipment that is also useful for other purposes.

Abstract: The invention relates to a lighting device (200), which comprises a power input (202) unit for reception of primary operating power from an external primary power supply, a lighting control unit (204) configured to control a lighting function of the lighting device, a secondary power supply unit (206) for storing operating energy and providing secondary operating power in absence of reception of the primary operating power, a wireless-transceiver unit (208), which is configured, in performing a pre-installation connectivity test routine under supply of only the secondary operating power, to generate and transmit, upon detecting reception of a trigger input signal (210), a first wireless test signal (212), to monitor for reception of a second wireless test signal (214) from an external wireless-transceiver unit; and to determine whether or not the received second wireless test signal fulfills predetermined test-signal criteria and to provide an output signal indicative thereof.

Abstract: A faceplate remote control device may be attached to a wall-mounted mechanical light switch that has a toggle actuator. The faceplate remote control device may include a toggle indicator that detects operation of the toggle actuator of the mechanical switch. The toggle indicator may cause the generation of an indication of detected operation of the toggle actuator. The toggle indicator may comprise a sliding member that is configured to move with the toggle actuator. The toggle indicator may comprise an obstruction detection device that includes an infrared (IR) transmitter and an IR receiver. The faceplate remote control device may include a control circuit and a wireless communication circuit. The control circuit may be configured to cause the wireless communication circuit to transmit one or more messages in response to detecting operation of the toggle actuator of the mechanical switch.

Abstract: According to some embodiments of the present disclosure, there is provided a method of controlling a power supply electrically coupled to a dimmer, the method including receiving a current sample value of a plurality of sample values corresponding to dimmer levels, determining a dynamic weight based on the current sample value, filtering the plurality of sample values based on the dynamic weight to generate a plurality of filtered values, and generating a control signal based on the filtered values for transmission to the power supply.

Abstract: A high voltage power system is disclosed. In some embodiments, the high voltage power system includes a high voltage pulsing power supply; a transformer electrically coupled with the high voltage pulsing power supply; an output electrically coupled with the transformer and configured to output high voltage pulses with an amplitude greater than 1 kV and a frequency greater than 1 kHz; and a bias compensation circuit arranged in parallel with the output. In some embodiments, the bias compensation circuit can include a blocking diode; and a DC power supply arranged in series with the blocking diode.