A circuit module for synchronizing the driving of an electrical device module with a second electrical device of a second circuit module is provided. The module includes the electrical device designed to assume a first and a second state, a control unit for controlling the electrical device, wherein the control unit is designed to provide a control signal, depending on which control signal the electrical device changes from the first state to the second state, and a trigger line coupled to the control unit, via which the control unit is couplable to the second control unit of the second circuit module. A synchronization signal is providable at the second control unit by the control unit via the trigger line, which synchronization signal is correlated with the control signal for initiating at least one change of the electrical device from the first to the second state.

A triac driving circuit according to an embodiment of the present disclosure includes a phototriac coupler, a first resistive element, and a second resistive element, which are connected in series to a gate terminal of a triac. A minimum resistance of the first resistive element including tolerance is higher than a maximum resistance of the second resistive element including tolerance.

A circuit and method for linear constant current control for an LED lamp, and an LED device are provided. The power compensation for the input linear power network is performed. When the triac dimmer is connected into the AC linear power network, constant current bleed-off is performed on the current passing through. In the meanwhile, when the triac dimmer detection module detects that a dimmer is connected in, the corresponding bleeder current is switched off, thereby improving the efficiency of the system. In this way, the input power of the system remains basically unchanged as the input voltage changes, besides, the constant current output drives the LED lamp, such that it is solved the problem that in the existing LED lighting and driving technique, the brightness of the entire LED lamp would change in case of voltage fluctuation of the linear power network.

A triac driving circuit according to an embodiment of the present disclosure includes a phototriac coupler, a first resistive element, and a second resistive element, which are connected in series to the gate terminal of the triac. A minimum resistance of the first resistive element including tolerance is higher than the maximum resistance of the second resistive element including tolerance.

A lighting device is provided with input terminals that receive corresponding terminals from any one of an analog or digital dimming device or a driver configuration device. Depending on the type of connected device, different circuits are enabled by a controller to receive dimming control signals from an analog or digital dimming device, or to receive device configuration data from a multiple driver configuration device. A wireless interface circuit receives and stores configuration data via an antenna. The controller automatically detects whether one of the analog or digital dimming device or the driver configuration device is coupled to the input terminals, enables a corresponding one of the analog and digital interface circuit or the driver configuration interface circuit, and generates output current reference signals for regulating the output current from the driving circuit, said reference signals corresponding to the received dimming control signals via the analog and digital interface circuit.

An assembly comprising at least one electrical device; the at least one electrical device being mounted to a support; at least one solar element for creating electric power from solar power; at least one energy storage device for storing electricity generated by the solar element; at least one wind impacting surface operatively associated with the support; at least one energy converter for generating electric power from the wind; and at least one shaft operatively connected to the at least one energy converter and the support. Optionally, the energy converter comprises at least one motor which operates to rotate the support; the at least one motor being operatively connected to the at least one battery for storing electric power therein.

A circuit for driving an LED lighting device from an AC power source includes a rectifier and one or more strings of LEDs. Each string of LEDs includes multiple LEDs. A controller produces control signals that open and close a set of switches that corresponding with the LED groups. The controller uses a current mirror with a pair of reference branches situated between a reference voltage and ground and between the switches and ground. Each reference branch has a first-in-line resistor between the reference voltage and the current mirror which primarily set the reference current through the controller by having the highest impedances, and the control signals are produced by a set of resistors on one of the branches. Each branch also has a last-in-line resistor between the current mirror and ground with the lowest impedances. The selection of the highest impedances and lowest impedances reduces sensitivity to temperature variations.

An LED driving circuit and a driving method thereof. The LED driving circuit comprises a rectifying circuit (40), a filter circuit (20), a current limiting circuit (10), a detection and control circuit (30), and an LED lamp string. The rectifying circuit is connected to an alternating-current power supply, and the negative electrode of the rectifying circuit is connected to the second end of the filter circuit and the second end of the detection and control circuit; the input end of the current limiting circuit is connected to the positive electrode of the rectifying circuit, the first output end of the current limiting circuit is connected to the positive electrode of the LED lamp string and the input end of the filter circuit, and the second output end of the current limiting circuit is connected to the third end of the detection and control circuit.

An exterior aircraft light unit includes a power input coupleable to an aircraft on-board power supply; at least one LED coupled to the power input for receiving power from the aircraft on-board power supply and configured to emit a light output; an optical sensor arranged for sensing an intensity detection portion of the light output and configured to output a detection signal indicative of an intensity level of the light output; an end of life detector, coupled to the optical sensor for receiving the detection signal and configured to determine an end of life condition; and a fuse circuit coupled to the end of life detector; wherein the fuse circuit is configured to irreversibly disable an LED circuit board upon the end of life detector communicating the end of life condition to the fuse circuit.

The present invention concerns a method for dynamically controlling powering a piece of electrical equipment powered by an energy storage element and a renewable energy source, the power of the power supply of said equipment being temporally variable according to an adjustable reference time curve characterized in that it comprises steps of adjustment on the basis of at least one external factor and at least one internal factor, and the constraint according to which the integral over the relevant operating cycle of said adjusted curve is lower than the quantity of energy that can be allocated from said energy storage element, during the relevant operating cycle, said external factors being physical parameters acquired by local sensors. The invention also concerns a lighting system implementing this method, an array of such electrical systems and a method for detecting one or a plurality of malfunctions of such a lighting system.