Abstract: A supply circuit for supplying a light-emitting element includes a voltage regulator having a voltage output for outputting an output voltage and having a control input for regulating the output voltage based on a voltage at a divider node of a voltage divider. A first and a second terminal are used to connect the light emitting element, the first terminal being coupled to the voltage output and the second terminal being coupled to a reference potential terminal via a series resistor. The supply circuit further includes a control block having an analog-to-digital converter for generating a digital voltage feedback value from a voltage applied to the second terminal, a control element, and a digital-to-analog converter coupled to the divider node for outputting an analog control signal based on a digital control value.

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: A control device may comprise a plurality of buttons, a plurality of light sources located behind the respective buttons and configured to illuminate the buttons, a light detector circuit configured to measure an ambient light level around the control device, and/or a control circuit configured to control the light sources to adjust surface illumination intensities of the respective buttons in response to the measured ambient light level. Each button may comprise indicia indicating a function of the button. The control circuit set the first button as active and the second button as inactive in response to an actuation of the first button. The control circuit may, based on the measured ambient light level, control the light sources to illuminate the first button to an active surface illumination intensity, and to illuminate the second button to an inactive surface illumination intensity that is less than the active surface illumination intensity.

Abstract: A portable electronic device with image capturing capabilities automatically or semi-automatically adjusts one or more image capturing parameters based on an input attribute of user engagement with a single-action haptic input mechanism. For example, the duration for which a single-action control button carried on a frame of the device is pressed automatically determines an image stabilization mode for on-board processing of captured image data. In one example, an above-threshold press duration automatically activates a less rigorous image stabilization mode, while button release before expiry of the threshold automatically activates a more rigorous photo stabilization mode.

Abstract: A smart light switch includes a housing, a light actuator, and a processor and memory. The processor is adapted to selectively turn an electrical load on and off in accordance with a programmed set of light activation rules stored in memory. The processor is operable to determine whether the smart light switch is in an On or Off state and create a historical record of the On or Off state of the smart light switch over time. A user is selectively able to place the smart light switch in a vacation mode. The processor suspends the programmed set of light activation rules, determines a probability that the smart light switch would have been turned on based upon the historical record, and probabilistically activates and deactivates the smart light switch for a period of time based upon the historical record while the smart light switch was not in vacation mode.

Abstract: A skills game includes at least a trackable drawing device and an electronic device. The trackable drawing device includes one or more illumination sources configured to illuminate an illumination area of the trackable drawing device. The electronic device is configured to track a location of the illumination area when the illumination area is illuminated a specific frequency by the one or more illumination sources. The electronic device also generates a drawing on a display of the electronic device based on tracking of the location.

Abstract: The present invention relates to a synchronous flyback converter circuit (1) for operating an illuminant line (4) having at least one illuminant (5), more particularly having at least one light emitting diode, the synchronous flyback converter circuit (1) comprising: a transformer (T), having a primary winding (Np), which is electrically connected to a first switch (S1), and a secondary winding (Ns), which is electrically connected to an output (A1, A1?) of the synchronous flyback converter circuit via a second switch (S2), the illuminant line (4) being able to be connected to the output; and a control unit (2), which is designed to control the first switch (S1) and the second switch (S2).

Abstract: The endoscope apparatus includes an endoscope and a video processor. The endoscope apparatus has a voice coil motor provided in a distal end portion of an insertion portion of the endoscope and having a coil with a resistance component, and a signal wire inserted into the insertion portion and connected to both ends of the coil, detects at least one value of a current supplied to the signal wire and a voltage applied to the signal wire, calculates power consumption of the coil from the at least one value detected and resistance value information of the resistance component, and executes a predetermined process based on the calculated power consumption of the coil and power consumption threshold information.

Abstract: A projector drive circuit includes a first voltage converter, a light source driver, a second voltage converter, and an isolation circuit. The first voltage converter converts a first voltage into a second voltage. The light source driver converts the second voltage into a third voltage. The second voltage converter converts the second voltage into a fourth voltage. The control circuit, coupled to the second voltage converter, receives the fourth voltage and outputs a first control signal. The isolation circuit, coupled to the control circuit and the light source driver, receives the first control signal and generates a second control signal to the light source driver, which controls the light source driver to generate the third voltage and provide the third voltage to a light source according to the second control signal. The isolation circuit electrically isolates the control circuit from the light source driver.

Abstract: An occupancy sensor with integral light level sensors is configured to turn off or disable peripheral circuits and go into a periodic deep sleep mode to reduce phantom loading. Peripheral circuits include occupancy sensor circuits and relay drive circuits, but may include other circuits such as communication circuits. The sensor may be configured to periodically wake itself up, check ambient light conditions to see if lighting is below the set threshold. If it is not, the sensor goes back to sleep. If it is, then the sensor can power up the occupancy sensor circuit to see if the space is occupied; if not, it can go back to sleep. If the space is occupied, it can turn on other peripheral circuits necessary to control the load.

Abstract: A variable hue task lamp with novel hue selection component is disclosed herein. The color and intensity of a task lamp is adjusted using a wireless connection from a device such as a smart phone, tablet, or computing device based upon an optimization method using a sample text or scene. The user first optimizes hue by adjusting the background color of the sample text or picture on the device. The optimum hue is then communicated to the task light, which sets light emitting diode intensities to match the optimum choice. Presets further localize choices in color space, and a comparison to white verifies the benefits of the chosen hue.

Abstract: A lighting driver is designed for driving an unknown lighting load and is based on a controlled DC driver, with a controlled output current. It is used in a first mode of operation to determine an operating current of the lighting load and in a second mode of operation to deliver a current to the lighting load in dependence the determined operating current, and optionally also in dependence on a dimming setting. In this way, the driver configures its output to the load based on an analysis of the current characteristics of the load, such as the maximum rated current.

Abstract: The present disclosure provides a point-control copper wire lamp and a lamp, comprising: a plurality of lamp beads, a first connecting line, a signal line and a second connecting line. A lamp bead includes a positive electrode welding leg, a negative electrode welding leg and a signal line welding leg; the positive electrode welding leg is welded to the first connecting line, the negative electrode welding leg is welded to the second connecting line, the signal line welding leg is welded to the signal line, and the lamp beads are arranged sequentially according to the preset positions. The point-control copper wire lamp and the lamp provided by the present disclosure have simple structures, and the lamp beads work independently and do not affect each other.

Abstract: An LED lighting apparatus is configured to light in response to an input power signal. The LED lighting apparatus includes a power supply module, configured to receive the input power signal in order to generate a driving power signal, and an LED module configured to light in response to the driving power signal. The power supply module comprises a demodulating circuit configured to receive the input power signal and demodulate the received input power signal, in order to generate a dimming control signal for controlling luminance of the LED module, wherein the demodulating circuit demodulates the input power signal based on a phase-cut angle of the input power signal.

Abstract: A multiple location load control system comprises a main device and remote devices, which do not require neutral connections, but allow for visual and audible feedback at the main device and the remote devices. The main device and the remote devices are adapted to be coupled together via an accessory wiring. The main device can be wired on the line side and the load side of the load control system. The main device is configured to enable a charging path to allow the remote devices to charge power supplies through the accessory wiring during a first time period of a half cycle of the AC power source. The main device and the remote devices are configured to communicate with each other via the accessory wiring during a second time period of the half cycle, for example, by actively pulling-up and actively pulling-down the accessory wiring to communicate using tri-state logic.

Abstract: An apparatus for generating electrical discharge includes a component that generates an electrical discharge, a measurement circuit configured to measure a magnitude of the electrical discharge, and a controller configured to control the magnitudes of the electrical discharge. A method for controlling a reference partial discharge signal in an electric power system includes generating a partial discharge for built in self test, controlling an expected discharge magnitude of the partial discharge, and includes measuring an actual discharge magnitude of the partial discharge.

Abstract: A display apparatus and a controlling method thereof are provided. The display apparatus may include: a display panel that displays a screen; a light source disposed at one side of the display panel; an audio input that receives an audio signal; and a processor that flickers the light source in response to the received audio signal.

Abstract: A vehicle interior lighting device includes a light-emitting portion, a case that includes a side wall surrounding the light-emitting portion and houses the light-emitting portion, and a plate-shaped lens fixed to the case so as to cover an opening of the case and an open end of the side wall defining the opening. Light emitted from the light-emitting portion can be extracted from the entire region of a light extraction surface of the lens including an edge without being reflected.

Abstract: An LED luminaire comprises LED arrays, a full-wave rectifier, an LED driving circuit, and electric current bypass circuit(s). The full-wave rectifier is coupled to an external power-line dimmer which is coupled to the AC mains and configured to convert a phase-cut line voltage into a first DC voltage. With the electric current bypass circuit(s) to partially provide a holding current path to cause the external power-line dimmer to sustain a dimming function, the LED driving circuit can provide a second DC voltage with various driving currents according to various input power levels to drive LED arrays without flickering. By adapting switching frequencies and a duty cycle, the LED driving circuit can regulate the second DC voltage to reach a voltage level equal to or greater than a forward voltage of the LED arrays no matter whether the first DC voltage is higher or lower than the second DC voltage.

Abstract: A parallel circuit for light emitting diodes includes a first power wire, a second power wire, a first light emitting diode, a second light emitting diode, and a second impedance element. The first LED includes a first turn-on voltage, and two ends of the first LED are respectively connected to the first power wire and the second power wire. The second LED includes a second turn-on voltage, and the first turn-on voltage is different from the second turn-on voltage. The second impedance element and the second LED are connected to form a second series circuit. One end of the second series circuit is electrically connected to the first power wire, while the other end of the second series circuit is electrically connected to the second power wire. In the parallel circuit, different LEDs are respectively driven by different voltages to emit light with pre-determined brightness.

Abstract: A voltage setting value adjusting device includes a controller, a plurality of laser light sources and a voltage setting value adjusting circuit. The controller has a voltage setting value input end and a driving voltage output end. The laser light sources are coupled to the driving voltage output end, and the controller outputs a driving current to the laser light sources according to a voltage setting value. The voltage setting value adjusting circuit is coupled between the voltage setting value input end and the driving voltage output end to detect a driving voltage of the laser light sources and adjust the voltage setting value according to the driving voltage.

Abstract: An LED driver circuit is disclosed. The LED driver circuit includes an amplifier having a first input coupled to receive a reference voltage and a second input coupled to receive a feedback voltage. The circuit further includes first and second transistors each having respective gate terminals coupled to an output of the first amplifier. In a first mode, a first switch alternately couples a source terminal of the first transistor to the second input of the amplifier (when the pulse is asserted) and a source terminal of the second transistor to the second input (when the pulse is de-asserted). A third transistor includes a gate terminal that is coupled to ground, by a second switch, when operating in the first mode. When operating in the second mode, the switch couples the third transistor to the output of the amplifier, while the pulse remains asserted.

Abstract: The invention relates to an electronic database (101) having entries for a plurality of operating devices (151) and a plurality of lamps (152), which electronic database is searched on the basis of a query (115). The query (115) indicates a light characteristic. On the basis of the search of the electronic database (101), a combination of a selected operating device and a selected lamp is determined and an electrical operating point of the selected operating device is determined. Then, an output (116) is provided, which indicates the selected operating device, the selected lamp and the determined operating point.

Abstract: A lighting device arranged to be controlled via a wireless controller, wherein said lighting device comprises a light emitting load arranged for emitting light, a driver arranged for receiving a supply voltage and for driving said light emitting load based on said received supply voltage, an auxiliary supply arranged for supplying an auxiliary Direct Current, DC, supply voltage, a wireless receiver, connected to and powered by said auxiliary supply, arranged for wirelessly receiving, from said wireless controller, a control signal, and for activating said driver based on said received control signal, wherein said wireless receiver is arranged to operate according to a pulsed listen mode, said pulsed listen mode comprising active phases in which said wireless receiver is able to receive said control signal and non-active phases in which said wireless receiver is not able to receive said control signal.

Abstract: A light-emitting device and display equipment are disclosed. The light-emitting device includes a light-emitting unit. The light-emitting unit includes a driving transistor and a light-emitting diode. The driving transistor includes a first terminal, a second terminal and a gate terminal. The first terminal is used to receive an operation voltage. The light-emitting diode is coupled to the second terminal and used to receive a driving current. The operation voltage is variable.

Abstract: A flashlight or portable light source has a battery power source, a light source, a circuit powered by the battery power source which causes the light source to emit light in an on state, a switch which causes the circuit to alternate between the on state and an off state in which the light source does not emit light when the switch is actuated by a user, a controller for causing light emitted from the light source to emit at two or more modes other than the off state, and an automatic dimmer residing within the flashlight which causes light emitted from the light source to dim without any activation of the switch after a first preselected amount of time.

Abstract: A solid state battery cell has a frame formed by a non-electrically conductive material. The frame has a frame thickness (Tf). A cell core surrounded by and entirely within the frame has a cell-core thickness (Tc). The cell core includes at least one anode, at least one cathode and at least one electrolyte between the at least one anode and the at least one cathode. At least one cell-core swell-accommodating recess is surrounded by and entirely within the frame. The at least one cell-core swell-accommodating recess defines an internal cell volume into which the cell core is expandable and from which the cell core is contractible. The cell-core thickness (Tc) is less than or equal to the frame thickness (Tf) during cell-charge and/or cell-discharge cycling.

Abstract: A multilayer of light diffusers includes the light diffusers layered one on top of another, and an air layer between adjacent light diffusers. Each of the light diffusers contains a light diffusing agent in a resin matrix. An example of the resin matrix is an aromatic polycarbonate, and an example of the light diffusing agent is a silicone-based diffusing agent.

Abstract: A LED bulb contains a dimming circuit, powered and controlled by an ON-OFF light switch. The quickly done, OFF-ON is converted to a DC binary signal for the Microcontroller Embedded Firmware. Then the Bulb is put into Dimming Mode and the Microcontroller Firmware outputs a continuously pulsed signal, to the LED current control IC to set the current. This is duplicated in the Warm White LEDs to vary their brightness. The percentage ON time of the pulse gives the percentage brightness of the LEDs. A variety of dimming and brightening cycles are displayed using Microcontroller Firmware. Then turning OFF the switch will lock in the dim point. It is saved in non-volatile Microcontroller Embedded EEPROM. When OFF then wait more than 2.0 seconds and turn ON and the Bulb and it is in Normal Mode and displays the last saved dim point and operates as a regular LED Bulb.

Abstract: The present disclosure provides an intelligent lighting control system. A controller of the lighting control system causes a phase change cut to be applied to an AC power signal to signal to a light bulb apparatus connected to a luminaire a request to self identify. The encoded phase changed AC power signal is transmitted to the light bulb apparatus for a predetermined time period. A response signal received from the light bulb in response to receipt of the encoded phase changed AC power signal by the light bulb is detected at the lighting control system. A bulb identification is determined based on the response signal from the light bulb apparatus.

Abstract: In some examples, a device includes a built-in self-test for detecting a fault on a light emitting diode (LED) or on a driver for an LED. The device includes a pair of pads that are configured to connect to the LED. The built-in self-test is configured to control the driver to turn on a respective pass switch connected to a pad of the pair of pads. The built-in self-test is configured to then determine a voltage level at each pad of the pair of pads. The built-in self-test can determine whether the fault exists on the LED, across the first anode pad and the first cathode pad, or on the driver based on the voltage level at each pad.

Abstract: A tubular solid state lighting device has a pin safety circuit electrically connected to connection pins of the one end. The pin safety circuit comprises two protection components, of different types. In one set of examples, there is an electrically controlled isolation switch and an electronic switch which functions as a high voltage isolation barrier. The switch provides full galvanic contact separation, whereas the isolation barrier provides current protection if the isolation switch is not functional. In another set of examples, there is a mechanically controlled isolation switch and an electrical or electronic isolation barrier. This provides two levels of protection, but requiring only a single manual operation by the installer of the lighting device. It avoids end-of-life protection circuitry being triggered during the installation of the lighting device.

Abstract: Described implementations utilize existing power lines at a location to detect and monitor the presence, position, and/or identity of users at the location. Rather than requiring dedicated monitors within each room or position within the location, the described implementations monitor a baseline voltage signal and/or an introduced voltage signal on the ground line of an existing power line of the location to determine the presence, position, and/or identity of a user at the location, either alone or in combination with other information.

Abstract: In some examples, a device includes a built-in self-test for detecting a fault between a first light emitting diode (LED) and a second LED. The device includes a first pair of pads configured to connect to the first LED and a second pair of pads configured to connect to the second LED. The built-in self-test is configured to control a first driver and a second driver to turn on, one-by-one, respective pass switches connected to the first and second pairs of pads. The built-in self-test is configured to then determine the first and second forward voltages across the first and second LEDs. The built-in self-test can determine whether the fault exists between the first and second LEDs based on the forward voltages.

Abstract: A modular system comprising a first component comprising an LED driver and is second component comprising a light engine is described.

Abstract: Described herein is modular luminaire assembly which is readily assembled and installed in the field whilst providing rigidity, structural integrity and water-tightness. The assembly comprises a plurality of luminaire modules mounted on a supporting pole. The plurality of luminaire modules comprises three luminaire modules which are connected to one another by respective module connectors and to the supporting pole by module connector. Each luminaire module has at least one interface for engaging with a complementary interface of an adjacent luminaire module or the supporting pole to provide a water-tight connection, each pair of modules being fixed together by a module connector.

Abstract: Display panels with hydrogen trap layers are described. The hydrogen trap layers may be incorporated into a variety of locations to getter or block hydrogen diffusion into the semiconductor oxide layer of an oxide transistor.

Abstract: A configurable multi-output charge pump for power supply generation includes one or more flying capacitors (FCs) arranged to be switchably connected into a plurality of circuit configurations operative to provide respective output voltages at a common charging node. A configuration logic circuit is operative to generate one or more configuration setting control signals to effectuate a particular circuit configuration. One or more storage capacitors (SC) are independently and individually connectable to the common charging node depending on a selection control logic having a configurable duty cycle, wherein each SC is operative to supply a respective voltage output to drive a corresponding electrical load.

Abstract: A light source driving device includes: a storage unit that stores therein three or more combinations of a level indicating brightness of light emitted from a light source, and a control value used when light with brightness corresponding to the level is emitted, the control value having a nonlinear relation with the level; and a control unit that controls the light source so that the brightness of the emitted light is gradually changed to brightness corresponding to a level of a target indicated by a light control instruction signal, by calculating a level indicating the brightness of the emitted light between a level when a light control instruction signal is supplied and the level of the indicated target, by using two or more combinations for calculating the control value corresponding to the calculated level, among the stored combinations.

Abstract: Provided is a lighting driving circuit for supplying power to a plurality of LED channels, having an input-output synchronous switch circuit synchronously connected to an input and an output of the lighting driving circuit, a rectifier circuit, a power conversion circuit, a power output having an output capacitor, and a discharge circuit connected to the switch circuit and an input end of the rectifier circuit and to the output capacitor. The plurality of LED channels are connected between the power output and the switch circuit, and the switch circuit is configured to simultaneously perform a switching operation of the power supplied to the plurality of LED channels to remove any inrush current to the LED load and send a sense signal to the discharge circuit to discharge the output capacitor.

Abstract: A load control device for an electrical load is configured to operate in a normal mode and a burst mode to adjust the amount of power delivered to the electrical load. The load control device comprises a control circuit that operates in the normal mode to regulate an average magnitude of a load current conducted through the load between a maximum rated current and a minimum rated current. During the normal mode, the control circuit controls the operating period of a load regulation circuit between a high-end operating period and a low-end operating period. The control circuit operates in the burst mode to regulate the average magnitude of the load current below the minimum rated current. During the burst mode, the control circuit adjusts the low-end operating period to be less than or equal to a minimum on time of the load regulation circuit.

Abstract: A light-emitting apparatus can reduce flicker and retain power efficiency. A method can include driving, by a light emitting element (LEE) driver circuit, first, second, and third LEEs using a pulse width modulation (PWM) driving scheme to generate light of a first color, the first, second, and third LEEs configured to emit different colors, alternating, by the LEE driver circuit, between driving the first, second, and third LEEs using a hybrid driving scheme and the PWM driving scheme, and after alternating between driving the first, second, and third LEEs in the hybrid and PWM driving schemes, driving, by the LEE driver circuit, the first, second, and third LEEs using the hybrid driving scheme.

Abstract: A dimmer switch includes a dimmer circuit configured to output a dimming control signal to control one or more dimmable light sources of a lighting fixture. The dimmer switch includes a power metering circuit configured to monitor power consumption of the one or more dimmable light source. The dimmer switch includes one or more control devices. The one or more control devices are configured to perform a test operation to determine a low-end trim setpoint for the dimming control signal. The one or more control devices are further configured to adjust a range of the dimming control signal based, at least in part, on the low-end trim setpoint.

Abstract: A DC-DC converter includes current resonant converter units connected in parallel. The converter units include respective control devices each of which includes a control circuit, a gate-pulse generating circuit, and the like. Taking into account a relational characteristic of a switching frequency and an output voltage of each of the converter unit, a lowest frequency as a common switching frequency, from among switching frequencies with respect to a same output voltage, is shared by the control circuits. The converter units are operated with drive pulses each of which is at the common switching frequency.

Abstract: A controllable light source is provided that includes a load control circuit and an integrated lighting load. The controllable light source is configured to receive wirelessly communicated commands transmitted by a remote control device associated with the controllable light source, such as a rotary remote control device. The controllable light source may include an actuator for associating the controllable light source with the remote control device, such that the load control circuit is operable to adjust the intensity of the lighting load in response to wireless signals received from the remote control device. The controllable light source may support the actuator such that the actuator may be actuated when the controllable light source is installed in a fixture.

Abstract: A power supply control device includes a control unit that executes determination processing that, when an operation instruction is received from a switch input detection unit, determines, in a case in which the switch circuit is turned on, whether or not a power source voltage value will decrease to or below an acceptable voltage value on the basis of a power source voltage value obtained from a voltage detection unit and a load current value stored in a storage unit in advance; and in the determination processing, executes switch control processing which allows the switch circuit to be turned on if the power source voltage value is determined to not decrease to or below the acceptable voltage value and does not allow the switch circuit to be turned on if the power source voltage value is determined to decrease to or below the acceptable voltage value.

Abstract: A pulse arc welding device is controlled so as to alternately repeat a peak current period in which a welding current is a peak current and a base current period in which the welding current is a base current smaller than the peak current, feed a welding wire to an object at a feeding speed while the welding current flows through the welding wire, generate an arc between the welding wire and the object, and weld the object. So as to keep an arc length of the arc to be constant, in the base current period, the feeding speed is set to a first feeding speed and, in the peak current period, the feeding speed is set to a second feeding speed which is larger than the first feeding speed and corresponds to the first feeding speed. By this method, good welding quality with reduced spattering and suppressed undercut can be obtained.

Abstract: A state indicating device, which is adapted in an electronic device, includes a state detecting circuit, a controller, a driving circuit, and an LED device. The state detecting circuit is configured to detect an operation state of the electronic device to generate a detection signal. The controller generates a control signal according to the detection signal. The driving circuit generates a driving signal according to the control signal. The LED device displays an indication state according to the driving signal, in which the indication state is configured to indicate the operation state.

Abstract: A controller for a motor includes a first processing circuit and a second processing circuit. The first processing circuit is configured to execute a first operation amount calculation process, an operation process, and an output process. The first operation amount calculation process is a process of calculating a first operation amount. The operation process is a process of operating a first drive circuit. The second processing circuit is configured to execute a second operation amount calculation process, a first use operation process, a second use operation process, and an initial value setting process. The second operation amount calculation process is a process of calculating a second operation amount. The initial value setting process is a process of setting an initial value of an integral element depending on a value of an integral element of the first operation amount calculation process.

Abstract: An apparatus and method for minimizing inrush power. The method includes transmitting a load energization signal from a primary microcontroller to a logic latch or secondary microcontroller, transmitting a zero-cross voltage signal from a zero-cross sensor coupled to the load power to the logic latch or secondary microcontroller, and transmitting an energize signal from the logic latch or secondary microcontroller to a relay after the receipt of an energize signal from the primary microcontroller and after receipt of a zero-cross signal.