Abstract: A lighting apparatus includes a light source, a bridge circuit, a voltage node, a filter circuit, a dimmer check circuit and a control circuit. The light source includes a LED module. The bridge circuit generates a DC power at a voltage node by converting an AC power. The filter circuit is connected to the voltage node for converting the DC power to a driving current to the LED module. The dimmer check circuit is coupled to the voltage node for generating a dimmer check signal by detecting whether a wall dimmer is electrically coupled to the lighting apparatus. The control circuit adjusts a setting of the filter circuit according to the dimmer check signal.

Abstract: Example embodiments relate to improved luminaire drivers. One embodiment includes a luminaire driver for driving a light module of a luminaire. The luminaire driver includes a driver housing. The driver housing includes a first and second power supply input connector element, for connection to an electrical distribution grid. The driver housing also includes output connector elements for connection to the light module. The luminaire driver also includes a driver circuitry arranged inside the driver housing, between the first and second power supply input connector elements and the output connector elements. The driver housing is provided with an equipotential connecting part available at an external surface of said driver housing and intended for being connected to an equipotential part of the luminaire. The luminaire driver further includes a resistive circuitry arranged inside the driver housing and connected between the equipotential connecting part and the first power supply input connector element.

Abstract: A lighting apparatus includes a light source, a bridge circuit, a voltage node, a filter circuit, a dimmer check circuit and a control circuit. The light source includes a LED module. The bridge circuit generates a DC power at a voltage node by converting an AC power. The filter circuit is connected to the voltage node for converting the DC power to a driving current to the LED module. The dimmer check circuit is coupled to the voltage node for generating a dimmer check signal by detecting whether a wall dimmer is electrically coupled to the lighting apparatus. The control circuit adjusts a setting of the filter circuit according to the dimmer check signal.

Abstract: A power converter and method for providing surge protection to the power converter is provided herein. An over voltage protection portion of a protection circuit is coupled between the rail voltage and ground reference of the power converter, and senses a first magnitude of the rail voltage. An under voltage protection portion of the protection circuit is coupled to a controller of the power converter and further between the rail voltage and the ground reference, and senses a second magnitude of the rail voltage to be transmitted to the controller. A regulator block is coupled between the over voltage protection portion and the under voltage protection portion, and is configured to compare the first magnitude of the rail voltage to a reference voltage of the regulator block, and to short circuit the under voltage protection portion when the first magnitude of the rail voltage is greater than the reference voltage.

Abstract: A water sensor comprises a housing including a top portion and a bottom portion; a controller positioned within the housing; a power source electrically coupled to the controller to energize the controller; and a continuity sensor electrically coupled to the controller and including an inner arcuate portion and an outer arcuate portion, the inner arcuate portion having an electrically conductive surface spanning at least 300 degrees, the outer arcuate portion having an electrically conductive surface spanning at least 300 degrees and substantially surrounding the inner arcuate portion to define an elongate gap therebetween, wherein the water sensor is structured to transition from a first logical state to a second logical state responsive to water bridging the elongate gap, and wherein the controller is structured to transmit a wireless water detection signal responsive to the water sensor transitioning to the second logical state.

Abstract: Disclosed is an asymmetrical half-bridge converter having high efficiency in a wide input voltage range. The converter may include a primary-side circuit including a first switch, a second switch, a primary-side capacitor, an additional inductor, and a primary-side magnetization inductor, and a secondary-side circuit including first and second diodes connected in series, first and second capacitors connected in series, a secondary-side rectification inductor having one end connected to the anode of the first diode and cathode of the second diode, and having the other end connected between the first and second capacitors connected in series, a first coupling inductor having one end connected to the cathode of the first diode and having the other end connected to the first capacitor, and a second coupling inductor having one end connected to the anode of the second diode and having the other end connected to the second capacitor.

Abstract: 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.

Abstract: Enhanced network power factor corrective designs are presented that can use corrective devices that achieve long-term, operationally stable mechanical work. Embodiments can utilize reverse-winding induction motor designs with engineerable parameters and configurations for the reverse winding (13) in systems and through methods where an inductive motor (1) can present a current that leads voltage and a leading power factor (16) to correct other existing induction motors (8) in an initial network (9) or be optimized for a particular application. Designs also present a power factor correction that can present a variable correction without altering the character or physical capacitive value of an electrical correction component. Individual induction motors that have leading current and a leading power factor (16) can be provided to improve reverse winding induction motors.

Abstract: One example embodiment provides a lighting device. The lighting device includes a lighting component, at least one coil, and a driving circuit. The lighting component connects with a movable magnet to project light on a flame sheet from different positions. The coil is disposed adjacent to the movable magnet to apply a magnetic force to move the movable magnet in response to a driving current in the coil. The driving circuit connects with the coil and the lighting component to provide the driving current according to a characteristic parameter of an electronic signal converted from an audio signal. The characteristic parameter includes one or more of an amplitude, a frequency and an envelope of the electronic signal. The lighting component moves with a speed and a direction controlled by the audio signal.

Abstract: 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.

Abstract: A water sensor comprises a housing including a top portion and a bottom portion; a controller positioned within the housing; a power source electrically coupled to the controller to energize the controller; and a continuity sensor electrically coupled to the controller and including an inner arcuate portion and an outer arcuate portion, the inner arcuate portion having an electrically conductive surface spanning at least 300 degrees, the outer arcuate portion having an electrically conductive surface spanning at least 300 degrees and substantially surrounding the inner arcuate portion to define an gap therebetween, wherein the water sensor is structured to transition from a first logical state to a second logical state responsive to water bridging the gap, and wherein the controller is structured to transmit a wireless water detection signal responsive to the water sensor transitioning to the second logical state.

Abstract: Methods and apparatus for detecting moisture that includes at least three conductors. One of the conductors has a different resistance than the other conductors. A liquid extends between the conductors. The difference between the impedance through a pair of conductors and the liquid and the impedance of through another pair of conductors and the liquid may be used to determine the position of the liquid along a length of the conductors. Similar methods may be used to determine an area of a liquid with respect to the conductors.

Abstract: A laser-based light source comprises a laser, an optical fiber, a conversion device, and a detector, the laser for emitting laser light with a laser peak emission wavelength, the optical fiber for guiding the laser light for being received at a first surface of the conversion device, the conversion device for converting at least a part of the laser light to converted light with a peak emission wavelength being longer than the laser peak emission wavelength, the optical fiber further for guiding a part of the converted light back in the direction of the laser and the detector for detecting at least a part of the back guided converted light. A vehicle headlight comprises such a laser-based light source, and a lighting system comprises such a vehicle headlight.

Abstract: An apparatus for an LED lamp includes an optic device. At least one light engine wire is connected to the optic device and mounted at least partially external to the optic device. A base is engaged with the optic device. A driver is contained within the base. At least one contact is mounted on the driver in electrical communication with the driver, wherein the at least one contact is in non-engaged contact with the at least one light engine wire.

Abstract: A controller for controlling a plurality of serially-connected LED strings includes a reference voltage generator configured to generate a plurality of reference voltages. The reference voltage generator is further configured to vary the plurality of reference voltages based on a sampled voltage signal. The sampled voltage signal can include one or both of a peak voltage of the rectified input AC voltage and a peak voltage of an LED diode forward voltage Vf. The controller further includes a plurality of linear regulators, each linear regulator coupled between a cathode of a corresponding LED string and a common current sense node, and each linear regulator is configured to regulate a current through a corresponding LED string according to a corresponding reference voltage.

Abstract: The present invention involves an OLED external compensation circuit of a depletion type TFT. The OLED external compensation circuit of a depletion type TFT comprises a first thin film transistor (T1), a second thin film transistor (T2), a capacitor (Cst), an organic light emitting diode (OLED), and a compensation circuit (10). The second thin film transistor (T2) is a depletion type. The compensation circuit is connected with the first node (S(N)) and the second node (T(N)). A reset signal is inputted into the compensation circuit (10). The present invention further provides another two OLED external compensation circuits of a depletion type TFT. The present invention provides an OLED external compensation circuit suitable for a depletion type TFT in view of the complicated characteristics of the conventional designs of the depletion type TFT and the OLED external compensation.

Abstract: A battery case of an electronic device includes a housing, a first conductor and a second conductor. The housing includes a first side wall, a second side wall, a bottom part, a first blocking part and a second blocking part. The bottom part is connected between the first side wall and the second side wall to define an accommodation space, for accommodating a battery having a main body arranged with first and second electrodes respectively on two opposite ends of the main body. The first blocking part is protruded from the first side wall and extended toward the second side wall. The second blocking part is protruded from the second side wall and extended toward the first side wall. The first conductor is arranged on the first side wall for contacting the first electrode. The second conductor is arranged on the second side wall for contacting the second electrode.

Abstract: An electronic driver for transforming an input voltage provided by an electrical ballast into an operating voltage for an LED lighting module is provided, comprising an input for connecting the electrical ballast to the electronic driver, an output for connecting the LED lighting module to the electronic driver, and an bypass circuit, wherein the bypass circuit is adapted for being connected in parallel to the output if a low input voltage is provided at the input and for being disconnected from the output if a high input voltage is provided at the input.

Abstract: An LED lamp and a component, a heat dissipating base and an LED wireless dimming system thereof are provided. The LED lamp component comprises a heat dissipating base, a light emitting module and a lens, the heat dissipating base has a bearing surface and a back surface opposite to the bearing surface, the bearing surface is provided with a first recessed section therein, the back surface is provided with heat dissipating structures; the heat dissipating base further comprises a first joint portion; the light emitting module is disposed in the first recessed section, and the lens covering the light emitting module.

Abstract: A switching power supply device includes a control unit alternately turning a first switching device and a second switching device ON/OFF so as to drive a primary side of a transformer, wherein the control unit includes: a peak power limiting circuit that monitors input power to the primary side of the transformer and outputs a forced turn OFF signal every time the input power becomes higher than a prescribed value; and a switching cycle counter circuit that estimates an output voltage on a secondary side of the transformer by counting a number of times the forced turn OFF signal is outputted by the peak power limiting circuit, and outputs a switching stop signal that causes the alternating turning ON/OFF of the first and second switching devices to stop when the estimated output voltage reaches an overvoltage protection detection voltage.

Abstract: The present invention relates to a device for the regulated temperature control of a gas discharge lamp, and a gas discharge lamp. The device according to the invention includes a transformer core of a transformer, the transformer core being designed for accommodating at least one discharge current-conducting connecting line of the gas discharge lamp as a primary winding. The transformer forms an energy source for heating a functional area of the gas discharge lamp that determines a function of the gas discharge lamp, and that is formed by an amalgam reservoir. The device also includes a secondary winding on the transformer core, and a means for temperature control that is used to regulate the energy that heats the amalgam reservoir. The means for temperature control is electrically connected to the secondary winding.

Abstract: Detecting failure modes of DC to DC power converters. In a system comprising a lighting microcontroller communicatively coupled to a direct current (DC) to DC power converter coupled to light-emitting diodes (LEDs) by way of an inductor, an example method may include: commanding, by the lighting microcontroller, the power converter to control an average current provided to the LEDs; reading, by the lighting microcontroller, values from the power converter; and detecting, by the lighting controller, one or more failure modes of the power converter based on the values.

Abstract: A lighting device assembly comprising an elongate base member (3) having a wall portion (9) on which several light emitting diodes (11) are mounted along the length of the base member, and an end cap (15) including an electrical terminal (17) at each respective end of the base member. The lighting device assembly further has an elongate light transmissive optical member (5) configured to be assembled with the base member, thereby enclosing the light emitting diodes. The base member is provided with at least one switch (55) configured to close an electric circuit connecting the light emitting diodes with the electrical terminals. The optical member is provided with at least one switching portion (59), configured to close said at least one switch in conjunction with the assembly of the base member and the optical member, said at least one switch being opened when the base member and the optical member are disassembled.

Abstract: Provided is an LED drive circuit whereby the light emission color is easily changed when dimming by adjusting the current that drives the LED. The LED drive circuit has: a variable constant current source; a first LED row having a plurality of LEDs connected in series and emitting light in a first light emission color; a second LED row having a plurality of LEDs connected in series and emitting light in a second light emission color; and a current limiting circuit including a current detection element and a switch element. The LED drive circuit is characterized by: the threshold voltage for the first LED row being larger than the threshold voltage for the second LED row; the first LED row and the second LED row being connected in parallel to the variable constant current source; and the current limiting circuit limiting the current flowing to the second LED row, on the basis of the current flowing to the current detection element via the first LED row.

Abstract: According to the present disclosure, an optoelectronic assembly is disclosed with at least one optoelectronic component, and a sensor circuit. The sensor circuit includes at least one energy supply circuit and an ascertainment circuit having at least one energy storage unit and a detection unit. The ascertainment circuit and the at least one optoelectronic component are electrically connected to one another in parallel. The at least one energy supply circuit is configured to supply electrical energy to the at least one optoelectronic component and the energy storage unit. The energy stored in the energy storage unit is supplied independently of the electrical energy supplied to the at least one optoelectronic component. The ascertainment circuit is configured such that the detection unit detects a change of the electrical energy stored in the energy storage unit depending on a change of the energy stored in the at least one optoelectronic component.

Abstract: In one example, a method includes determining, by a device of a system, a voltage feedback value that represents a voltage level of a power signal being provided to a plurality of load elements that are selectively active. In this example, the method also includes adjusting, by the device and based on a quantity of load elements of the plurality of load elements that are active, the voltage level of the power signal such that the voltage feedback value remains less than or equal to an overvoltage threshold.

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 bleeder circuit is provided in a switched mode power supply (SMPS) that provides a compensation current when the loop current drops below the holding current of the TRIAC to alleviate light flickering problem. Further, automatic power factor correction is also provided in embodiments of the invention, which enables the output current to be in phase with the input voltage. The power factor correction not only improves the efficiency of the power supply, it can also reduce the compensation current and the duration in which compensation current flows, thereby reducing the power loss in the bleeder circuit.

Abstract: A vehicle headlight with a laser light source (1), having at least on laser diode branch (Z) with at least one modulated laser diode (DL), wherein the laser beam (2) of the at least one laser diode can be directed in a scanning manner by means of a light scanner (7) onto a light conversion means (8) in order to generate a luminous image (11) on same, which is projected by means of an imaging system (12) as light image (11?) onto the road (13), as well as with a laser diode controller (3) and a processing unit (4) associated with same, which is supplied with sensor signals (s1 . . . sn) and which delivers a modulation signal (sm) for the laser diode controller, and with a controlled power supply (15) for the laser diode controller. The laser diode branch (Z) is bridged by a controlled parallel circuit (P) which is designed as a current controller with an analog controller (16, T2) of the laser diode controller (3) and the modulation signal (sm) is fed to the analog controller.

Abstract: An illumination apparatus for a motor vehicle is provided. The illumination device may include at least one semiconductor light source arrangement, and means for regulating or controlling the supply current for the at least one semiconductor light source arrangement, the means having at least one resistance element with a temperature-dependent resistance value.

Abstract: A light emitting diode (LED) voltage driver circuit includes an input terminal to which a voltage is applied, a ground terminal, an input capacitor whose one end is connected to the input terminal and the other end, which is different from the one end, is connected to the ground terminal, wherein the input capacitor is charged by a voltage difference between the voltage applied to the input terminal and a voltage of the ground terminal, and a buck converter circuit connected to the input capacitor and the input terminal and configured to output power to an LED, wherein the voltage charged in the input capacitor is supplied as an input voltage of the buck converter circuit.

Abstract: A lighting unit (110) for an outdoor lighting fixture comprises a magnetic sensor module (215). The lighting unit (110) further comprises a controller (210) coupled to the sensor module (215). The controller (210) is configured to use the sensor module (215) to determine a measurement of vehicle traffic within a region defined by a sensing range of the sensor module (215), and use the sensor module (215) to determine a current orientation of the lighting unit.

Abstract: An LED tube lamp is provided.

Abstract: 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.

Abstract: An LED fluorescent lamp connected to an electronic fluorescent lamp ballast comprises a plurality of external connection pins having at least, a first connection pin connected to a terminal of the electronic fluorescent lamp ballast and a second connection pin connected to another terminal of the electronic fluorescent lamp ballast, an LED array including a plurality of LEDs connected in series, one or more diodes connected in series between the first connection pin and the second connection pin, one or more resistors connected in series between the first connection pin and the second connection pin. The LED array, the one or more resistors and the one or more diodes are connected in series with each other between the first connection pin and the second connection pin.

Abstract: An electronic lighting system with a driver for providing light from visible light bulbs and non-visible light bulbs, including from infrared, ultraviolet, LED and fluorescent lamps of multiple sizes and wattages, having power factor correction, surge protection, current sensing, current adjustment feedback, and dimming system. There are transformers dedicated to particular lamp receptacles that include interloper diodes and resistor sets that fine tune the functioning of the driver sensing loads. Comparator circuitry receives an external control signal and compares it to feedback from the output side of the circuitry, and thereby controls the Pulse Width Modulation circuitry, which cooperates with feedback-based transistors and a MOSFET gate driver circuit for current limiting to the loads being applied.

Abstract: An electronic lighting system with a driver includes transformers that are dedicated to particular lamp receptacles that include interloper diode and resistor sets that fine tune the functioning of the driver. A buck converter and power factor correction, and a zeta scan are included. A comparator circuitry receives an external control signal and compares it to feedback from the output side of the circuitry, and thereby controls a Pulse Width Modulation (PWM) circuitry, which cooperates with feedback-based MOSFETs and a MOSFET gate driver circuit. This aids in dimming capabilities, recognizes and corrects for outages and recognizes and corrects for changes in the different size lamps that a user may install.

Abstract: A bleeder circuit includes an input current sense circuit, coupled to one of first and second input terminals of a driver circuit, to output a bleeder on/off signal in response to an input current through the first and second input terminals of the driver circuit. A variable current circuit is coupled between the first and second input terminals of the driver circuit and coupled to the input current sense circuit. The variable current circuit is coupled to conduct a bleeder current between the first and second input terminals in response to the bleeder on/off signal. A current scaling circuit is coupled to the variable current circuit to output a current scale signal which is received by the variable current circuit in response to a shutdown signal. The shutdown signal is representative of a conduction angle.

Abstract: An analog AC circuit for light emitting diode (LED) groups that provides continuously emitted light through a dimming process from 100% relative light output to 5% of relative light output. The analog AC circuit utilizes ancillary circuitry that bypasses a first series interconnection of a first LED group and presents a capacitor electrically connected to an ancillary transistor to provide constant current at above a current threshold to cause the first LED group to continuously emit light even through a dimming process.

Abstract: A light emitting diode driving chip includes: a current regulating circuit arranged to selectively outputting four currents to four pins respectively; a current control circuit coupled to the current regulating circuit and a fifth pin, arranged to receive an adjusting signal at the fifth pin to control the four currents; a feedback voltage control circuit arranged to output a feedback voltage to a sixth pin according to a first specific voltage selected from four voltages corresponding to the four pins; and a protection circuit arranged to determine whether a voltage difference between a second specific voltage selected from the four voltages and the first specific voltage is larger than a threshold value. If the first specific voltage is larger than the threshold value, the protection circuit controls the current regulating circuit to stop conducting current to a specific pin corresponding to the first specific voltage.

Abstract: Various embodiments may relate to a fault detection device for streetlamp lighting system. The streetlamp lighting system includes multiple load groups which are powered by a power cable. The fault detection device includes a master detection control unit and load detection control units configured for respective load groups, wherein the master detection control unit determines, according to a first fault feedback signal provided by respective load detection control unit, whether the load group corresponding to the load detection control unit is failed, while the streetlamp lighting system is in a first state, and the master detection control unit determines, according to a physical quantity detected on the power cable, whether the power cable is failed, while the streetlamp lighting system is in a second state. In addition, various embodiments further relate to a method of controlling the fault detection device.

Abstract: A detection circuit is configured to detect the presence of an operating dimmer arranged to dim a lamp. The detection circuit includes a first circuit for measuring at a first frequency an impedance at a coupling arranged to carry a possibly dimmed feeding signal for the lamp. The first frequency is higher than the mains frequency of the mains which supplies the possibly dimmed feeding signal for the lamp. The first circuit provides a first output signal indicating the measured impedance at the first frequency. The detection circuit also includes a second circuit for analyzing the first output signal and providing a second output signal indicating whether the operating dimmer is present. The second output signal indicates that the operating dimmer is present if the measured impedance changes by at least a defined minimum deviation within a defined time interval.

Abstract: An active load circuit applicable to a power supply. The active load circuit includes a control circuit, a dummy load and an active switching circuit. The control circuit is coupled to a ground terminal, an output terminal of a power supply and the detection circuit. The dummy load is coupled to the output terminal The active switching circuit is coupled to the control circuit, the dummy load and the ground terminal. The control circuit receives an output voltage via the output terminal and receives a power-good input signal via the detection circuit. When a voltage level of the power-good input signal is lower than a threshold value, the control circuit controls the active switching circuit to enter a load-on mode so that the dummy load is connected to the ground terminal and that the output terminal is connected to the dummy load.

Abstract: Disclosed is a monitoring and control device, applicable to an illumination apparatus. The illumination apparatus includes a lighting unit which outputs a signal representative of a status of the lighting unit. The illumination apparatus includes an apparatus identifier. The illumination apparatus includes: a monitoring circuit electrically coupled to the lighting unit, for receiving the signal and determining whether the illumination apparatus needs to be replaced in response to the signal satisfying a condition; a controller electrically coupled to the monitoring circuit; and a receiving/transmitting unit electrically coupled to the controller, wherein the controller controls the receiving/transmitting unit to transmit the apparatus identifier of the illumination apparatus to be replaced in response to the determination is affirmative. A method thereof is also disclosed.

Abstract: A fault detection apparatus coupling with a lamp module includes a current detector and a controlling module. The controlling module is coupled with the current detector. A fault detection method of a fault detection apparatus is also provided in the present disclose. The method includes providing a current detector to detect a current variation of one lamp of a lamp module in a period, and provide a controlling module to compare the current variation with a reference value stored in the controlling module to determine a state of the lamp module.

Abstract: A driver circuit for driving one or more loads in a controlled manner includes multiple operational modes. In one mode, bypass switching may be used to adjust a drive signal applied to the one or more loads. In another mode, a DC-DC converter may be used to adjust the drive signal applied to the one or more loads. In at least one embodiment, the driver circuit is a light emitting diode driver circuit.

Abstract: A pulsating circuit suppling a pulsating voltage to a load when a capacitor is not discharged, and a control circuit which controls discharging the capacitor. The control circuit includes a smoothing circuit, and a voltage detection circuit. The voltage detection circuit includes a first switch that is turned off by detecting the pulsating voltage is in a voltage range; a second switch connected to the first switch and is turned on when the first switch is turned off; and a third switch connected to the second switch and is turned on when the second switch is turned on When the pulsating voltage is not in the discharge voltage range of the capacitor, the first switch is turned on and the second and third switches are turned off. A discharge voltage of the capacitor is set within a range that is slightly higher than a lower limit of a voltage.

Abstract: The present disclosure provides an electronic device and an information processing method. The electronic device comprises: a light emitter configured to emit lights; a sensor configured to acquire a first specified parameter which is formed based on a motion state or gesture of an operator; a processor configured to determine whether the first specified parameter meets a first preset condition, so as to obtain a first determination result, and configured to control the light emitter to emit the lights based on the first determination result at least in a case that the first specified parameter meets the first preset condition. The first preset condition comprises that the operator is performing a predetermined motion or is in a predetermined gesture.

Abstract: Photocontrol apparatus that controls a luminaire or other load such that the luminaire is switched on during nighttime hours and off during the daytime. The photocontrol generates a micro-amp power supply using the voltage generated across a high value resistor in series with an alternating current (AC) power line. The photocontrol consumes only microwatts of power in either the ON or the OFF state, unlike traditional relay- or triac-based photocontrols. The photocontrol does not require a voltage generating photo sensor to generate power for the photocontrol. A solar cell, semiconductor photo diode or photo diode string, cadmium sulfide cell, semiconductor ambient light sensor, etc., may be used as the sensor element.

Abstract: An electronic dimming ballast or light emitting diode (LED) driver for driving a gas discharge lamp or LED lamp may be operable to control the lamp to avoid flickering and flashing of the lamp during low temperature or low mercury conditions. Such a ballast or driver may include a control circuit that is operable to adjust the intensity of the lamp. Adjusting the intensity of the lamp may include decreasing the intensity of the lamp. The control circuit may be operable to stop adjustment of the intensity of the lamp if a magnitude of the lamp voltage across the lamp is greater than an upper threshold, and subsequently begin to adjust the intensity of the lamp when the lamp voltage across the lamp is less than a lower threshold. Subsequently beginning to adjust the intensity of the lamp may include subsequently decreasing the intensity of the lamp.