Abstract: An enhanced lighting control system is provided that utilizes updated communications technology to provide a cost and resource efficient lighting control system that allows for a retrofit installation into existing lighting systems. The lighting control system utilizes single pair ethernet connection protocols, as well as a pulsed power source, to enable the efficiencies.

Abstract: A light-emitting diode (LED) dimming driving device includes a digital-to-analog converter (DAC) control signal generating unit and an LED driving signal generating unit. The DAC control signal generating unit generates a first control signal and a second control signal. The first control signal is input to the LED driving signal generating unit to generate a first driving current I1, and the second control signal is input to the LED driving signal generating unit to generate a second driving current I2. The first driving current I1 is less than a maximum power current value Ipeak corresponding to a peak power of the LED driving signal generating unit, and the second driving current I2 is greater than the maximum power current value Ipeak corresponding to the peak power of the LED driving signal generating unit.

Abstract: A method for operating clocked and regulated electronic power converters may be contained in operating devices for light-emitting diodes. An associated regulating circuit may include at least one regulating amplifier having at least two regulating inputs, from the output of which a negative feedback network runs to one of its regulating inputs, a first input for the signal for a target value of the average of the output power to be regulated, and a second input which forwards a signal for the target value of a waveform or of a pulse pattern for the output power to be regulated to one of the regulating inputs via a DC current-blocking high-pass filter.

Abstract: A light emitting diode (LED) lighting apparatus is provided. The LED lighting apparatus includes a first LED array; a second LED array; a first driving chip configured to receive AC power, and to control the first LED array based on a first control signal; a second driving chip configured to receive the AC power, and to control the second LED array based on a second control signal; a communication device configured to generate the first control signal and the second control signal based on a request from an external device; and an AC/DC converter configured to receive the AC power, and to provide DC power to the communication device.

Abstract: A load regulation device is adapted to control an electrical load. The load regulation device may be in a low power state, a ready state, and/or an on state. The low power state is characterized by the electrical load being unenergized. The ready state is characterized by a load control device and/or the load regulation device using more power than the low power state and the electrical load being unenergized. The on state is characterized by the electrical load being energized. The load regulation device is configured to receive an indication of a user's presence when the load regulation device is in the low power state. The load regulation device is configured to change from the low power state to the ready state in response to receiving the indication. The load regulation device is configured to wait in the ready state for a change state instruction.

Abstract: A vehicle lamp includes a turn lamp, a nonvolatile memory, a signal processing device, and a drive circuit. The turn lamp includes a plurality of light emitting elements that independently controllable to be turned on and off. The nonvolatile memory stores a parameter related to control of the plurality of light emitting elements. The signal processing device generates, based on the parameter, a plurality of turn-on commands indicating turn-on states of the plurality of light emitting elements at each time point by executing a software program. The drive circuit drives each of the plurality of light emitting elements based on the plurality of turn-on commands.

Abstract: A lighting device, such as a light-emitting diode (LED) light source, may operate in an interim operable state to avoid and/or prevent undesirable characteristics in the light emitted by the lighting device (e.g., strobing and/or flickering of a brightness of the light and/or shifting or change of a color of the light). When operating in a normal state, the control circuit may determine if a measured value of a first operational characteristic (e.g., a forward voltage of an emitter of the lighting device) is outside of a range and operate in the interim operable state if the measured value of the first operational characteristic is outside of the range. When operating in the interim operable state, the control circuit may adjust a drive current for the emitter in response to a measured value of a second operational characteristic (e.g., a forward voltage of a detector of the lighting device).

Abstract: A lighting system includes a light engine including a correlated color temperature (CCT) terminal configured to transmit a first power signal having a first variance and to receive a CCT signal, the light engine being configured to emit light according to the CCT signal, and a CCT clamp coupled to the CCT terminal, and configured to receive the first power signal and to generate the CCT signal having a second variance, the first variance of the first power signal being greater than the second variance of the CCT signal.

Abstract: A driving method, for a controller in a display apparatus, is disclosed. The display apparatus includes LED strings, scan transistors, current regulators and a power converter. The driving method includes following steps. LED cathode voltages are detected on nodes between the LED strings and the current regulators. When a first LED cathode voltage corresponding to a first scanning channel is equal to a minimal operable voltage of the current regulators and a second LED cathode voltage corresponding to a second scanning channel exceeds the minimal operable voltage of the current regulators, a voltage drop over one corresponding scan transistor is increased on the second scanning channel.

Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.

Abstract: A vehicular glass module (1) includes a vehicular window glass (2) having a conductive pattern (4) formed thereon and an on-glass connector (3) attached to the vehicular window glass (2). The on-glass connector (3) includes a hollow portion (11) and a circuit board (6) disposed in the hollow portion (11). The hollow portion (11) is in communication with an outside of the case (5) via a through hole (15) provided in a partition wall (14) defining a part of the hollow portion (11). The through hole (15) is positioned lower than the circuit board (6). The water generated in the hollow portion (11) by condensation is discharged to the outside via the through hole (15).

Abstract: An LED illumination device and a color temperature switching method thereof are provided. The LED illumination device includes a bridge rectifier chip, a microcontroller module, a first semiconductor switch module, a second semiconductor switch module, a first current limiting module, a second current limiting module, and a first light-emitting module and a second light-emitting module. The microcontroller module includes a microcontroller chip. The first semiconductor switch module includes a first semiconductor switch chip for receiving a first pulse width modulation signal output from the microcontroller chip. The second semiconductor switch module includes a second semiconductor switch chip for receiving a second pulse width modulation signal output from the microcontroller chip. When the AC power is supplied to the LED illumination device, the first and the second semiconductor switch modules are turned on and maintained within a predetermined turn-on percentage range without being completely turned off.

Abstract: The present invention provides a power adaptor for LED lamps, and an LED lamp system, each of which may achieve the function of light dimming in a current LED lamp without having to modify its original structure(s) wherein the current LED lamp originally could not have the function, or may achieve better dimming control of parallel-connected LED lamps. The power adaptor includes a power conversion circuit and a dimmer, in which the dimmer includes a dimming signal generating module and a signal combining processing module. The dimming signal generating module is configured to receive a dimming instruction and convert the dimming instruction into a dimming signal. The signal combining processing module is electrically connected to the dimming signal generating module and configured to modulate the power signal, according to the dimming signal, to produce an output signal for driving the LED lamp.

Abstract: A plasma processing apparatus includes: a processing container; an electrode that places a workpiece thereon; a plasma generation source that supplies plasma into the processing container; a bias power supply that supplies a bias power to the electrode; an edge ring disposed at a periphery of the workpiece; a DC power supply that supplies a DC voltage to the edge ring; a controller that executes a first control procedure in which the DC voltage periodically repeats a first state having a first voltage value and a second state having a second voltage value, the first voltage value is supplied in a partial time period within each period of a potential of the electrode, and the second voltage value is supplied such that the first and second states are continuous.

Abstract: Plasma source assemblies, gas distribution assemblies including the plasma source assembly and methods of generating plasma are described. The plasma source assemblies include a powered electrode with a ground electrode adjacent a first side and a dielectric adjacent a second side. A first microwave generator is electrically coupled to the first end of the powered electrode through a first feed and a second microwave generator is electrically coupled to the second end of the powered electrode through a second feed.

Abstract: A remote control device may be configured to be mounted over the toggle actuator of a light switch and to control a load control device. The remote control device may include a mounting assembly and a control unit that is removably attachable to the mounting assembly. The mounting assembly may include a release tab that is configured to be operated from a locking position in which the control unit is secured to the mounting assembly, to a release position in which the control unit may be detached from the mounting assembly. The mounting assembly may include a clamp that is configured to engage with the toggle actuator of a mechanical switch to which the remote control device is mounted.

Abstract: A dimmer includes a primary intensity actuator coupled to a primary intensity potentiometer, the primary intensity actuator structured to be actuated for at least one of: controlling an amount of power delivered to a load connected to the dimmer in normal operation mode, and adjusting light intensity based on a first user input in the normal operation mode; selecting a type of end trimming based on a second user input before entering configuration mode; or adjusting, based on a third user input, an end trim value; a configuration actuator arranged on a side of the dimmer and structured to be actuated for entering the configuration mode based on a fourth user input within a first predetermined period; and a controller coupled to the primary intensity potentiometer, the configuration actuator, and a driver circuit coupled to a bidirectional switching device, the controller structured to control dimmer operation.

Abstract: A load control device may be configured to turn on lighting loads to obtain a fast turn-on time that may be substantially consistent across lighting loads that have different load voltages. The load control device may comprise a power converter circuit configured to produce a voltage across a capacitor, and a control circuit configured to control the power converter circuit to generate the voltage across the capacitor. The control circuit may determine a learned voltage from the magnitude of the voltage across the capacitor. For example, the control circuit may measure the magnitude of the voltage and store the measured voltage as the learned voltage. The control circuit may determine an operating parameter for the power converter circuit as a function of the learned voltage, and control the power converter circuit according to the operating parameter to charge the capacitor until the magnitude of the voltage exceeds a threshold.

Abstract: A control system of an off-road work vehicle for performing a work function includes a controller for controlling the work vehicle, a light control module for controlling a lighting system of the work vehicle, and a sensing device disposed in communication with the controller. The lighting system includes a array field light that is operably controllable to project a light emission. The sensing device signals a location to be illuminated by the array field light to the controller, and the light control module operably controls an output of the array field light to direct substantially its entire light emission at the location.

Abstract: A buffer circuit for an LED driver circuit, a LED driver circuit, and a control method, the buffer circuit includes a first control switch connected in series in a rectified input loop and a feedback control module connected to the rectified input loop to obtain a loop current in the rectified input loop for generating a first control signal to the first control switch according to the loop current and a reference signal. The first control switch switches between a fully conducting state and a non-fully-conducting state based on the first control signal and restrains the loop current when the first control switch is in the non-fully-conducting state. The buffer circuit enhances the effect of restraining the current change rate and can effectively restrain current spikes in a circuit, resulting in higher safety and reliability.