An isolated synchronous rectification type DC/DC converter, includes: a transformer including primary and secondary windings; a switching transistor connected to the primary winding; a synchronous rectifying transistor installed between the secondary winding and a ground line on the secondary side; a photocoupler including a light emitting device and a light receiving device; a feedback circuit driving the light emitting device such that an output voltage of the DC/DC converter approaches a target voltage; a primary side controller connected to the light receiving device and switching the switching transistor depending on feedback signal from the photocoupler; a synchronous rectification controller controlling the rectifying transistor; and a protection circuit including a temperature detection element, one end of the detection element connected to a drain of the rectifying transistor, the protection circuit configured to detect an overheated state of the rectifying transistor depending on a first signal generated by the temperature detection element.

The invention discloses a method for controlling the time sharing starting of electronic ballasts and a delayed-started electronic ballast. According to the method, the electronic ballasts are delayed-started after being energized, and delay time for the delayed starting of the electronic ballasts is a random number acquired based on the temperature of the ballasts. The delayed-started electronic ballast includes an electronic ballast body and a delay switch. After the adoption of the technical scheme of the invention, a delayer with the delay time set by virtue of random numbers corresponding to different environmental temperature is additionally arranged in the ballast, and multiple ballasts connected in parallel in a circuit can be started at different time points after different delay time under the control of the same control switch, which remarkably reduces current impact on a power grid and reduces a voltage drop condition.

A signal processing apparatus includes an interface module and a signal processing module. The interface module includes an identification resistance for identifying the interface module, the interface module being connectable to a device configured to perform at least one of measuring of a measuring target and operating of an operation target. The signal processing module includes a first connection terminal connected to one end of the identification resistance, a first power source connected to the identification resistance via the first connection terminal, a detector configured to detect any one of voltage and electrical current at the first connection terminal, and a signal processor configured to process signals received from and transmitted to the device.

The present invention provides a multifunctional LED device and multifunctional speaker system. The multifunctional LED device includes a power supply unit; a control unit configured to process audio signals and control commands; an audio power amplifier configured to drive a speaker; a speaker; a first wireless transceiver configured to communicate with a smart terminal; a second wireless transceiver configured to communicate with other LED devices; and an LED light source. The multifunctional speaker system includes several multifunctional wireless LED devices configured to works as wireless speakers, and a smart terminal to control the system remotely. The smart terminal may communicate with and control all the multifunctional LED devices. The multifunctional LED devices may communicate with each other. Two multifunctional LED devices may be configured as a 2.0-channel speaker system. Other speaker systems, such as 2.1-channel, 5.1-channel speaker systems, may be realized using more multifunctional wireless LED devices.

An exterior aircraft lighting device comprises: at least one light source; an optical element having a light entry side facing the at least one light source and a light exit side and being configured for modifying light emitted by the at least one light source; at least one photo detector, which is configured and arranged for detecting a portion of the light emitted by the at least one light source, which is reflected by the light entry side of the at least one optical element, the photo detector providing a detection value, representing the amount of detected light; and a control and evaluation unit which is configured for evaluating the state of wear of the at least one light source based on the detection value provided by the at least one photo detector.

A faceplate remote control device is attached to a wall-mounted mechanical light switch that has a toggle actuator. The faceplate remote control device includes a toggle indicator that detects operation of the toggle actuator of the mechanical switch. The toggle indicator causes the generation of an indication of detected operation of the toggle actuator. The toggle indicator comprises 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 includes a control circuit and a wireless communication circuit. The control circuit is 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.

Embodiments described herein provide systems for stimulating a desired response, such as ovulation and egg laying, hunger, growth, mood and sexual maturity in birds, such as chickens, turkeys, ducks, quail and ostrich, by controlling the duty cycle, wavelength band and frequency of photon bursts to a bird, through the high frequency modulation of photons in an individual color spectrum to the bird and duty cycle, where the photon modulation and duty cycle is based upon the specific needs of the bird.

The present disclosure relates to staggered arrays of individually addressable light-emitting elements for sweeping out angular ranges. One example device includes an astigmatic optical element. The device may also include an array of individually addressable light-emitting elements arranged to emit light towards the astigmatic optical element. The astigmatic optical element may be arranged to focus light emitted from each individually addressable light-emitting element to produce a substantially linear illumination pattern at a different corresponding scan angle within an angular range. The example device may further include a control system operable to sequentially activate the individually addressable light-emitting elements such that the substantially linear illumination pattern sweeps out the angular range. The individually addressable light-emitting elements may be staggered with respect to one another in the array such that the substantially linear illumination pattern sweeps out the angular range continuously.

A communication address setting method for setting, in an operation terminal, communication addresses of a plurality of lighting devices. The communication address setting method includes: displaying a plurality of icons in a set order, on a screen of the operation terminal, the plurality of icons corresponding to a positional relationship of the plurality of lighting devices; and obtaining a communication address from each of the plurality of lighting devices, associating the plurality of icons in the set order with the communication addresses in an order of the obtaining, and displaying a state of the associating on the screen.

Apparatuses, methods and a storage medium associated with a sensor hub are disclosed herein. In embodiments, a sensor hub may include a body with a plurality of apertures disposed on the sensor hub body at substantially equal distances to each other, oriented towards a plurality of directions, and a plurality of sensors disposed inside the sensor hub body to interface respective apertures, to sense ambient conditions in the plurality of directions via the apertures. The sensor hub may further include one or more communication interfaces to transmit the sensor data or results from processing the sensor data to an external recipient. Other embodiments may be described and claimed.