Provided is an apparatus for supplying power. The apparatus includes a rectifier unit configured to apply a voltage by rectifying alternating current power source, a light emitting unit including a plurality of light emitting diodes which emit light by electric current according to the voltage and are connected in series, a signal generation unit configured to generate a driving signal by dropping the voltage of the rectifier unit, and a switch unit including a plurality of transistors which are connected to the plurality of light emitting diodes, respectively, and are turned on by the driving signal and switch a route of electric current flowing in the plurality of light emitting diodes to be supplied to a microcontroller as power source.

Provided is an apparatus for supplying power. The apparatus includes a rectifier unit configured to apply a voltage by rectifying alternating current power source, a light emitting unit including a plurality of light emitting diodes which emit light by electric current according to the voltage and are connected in series, a signal generation unit configured to generate a driving signal by dropping the voltage of the rectifier unit, and a switch unit including a plurality of transistors which are connected to the plurality of light emitting diodes, respectively, and are turned on by the driving signal and switch a route of electric current flowing in the plurality of light emitting diodes to be supplied to a microcontroller as power source.

An intrinsically safe (IS) luminaire disposed in a hazardous environment provides visible light and serves as a primary, auxiliary, back-up, and/or charging source of IS DC power for external devices disposed in the hazardous environment, such as process control devices and equipment. The luminaire includes a power converter that converts received power into DC power, an IS barrier that converts the DC power into IS DC power native to or utilized by a recipient external device, and a power distribution port via which IS DC power is delivered to the external device. In some configurations, the luminaire monitors communicates statuses, alerts, and/or other information corresponding to delivering IS DC power to one or more external devices to a host and/or portable communication device. The luminaire may include multiple IS barriers of same and/or different IS ratings, and may dynamically control activation/deactivation of the IS barriers and/or usages thereof.

An intrinsically safe (IS) luminaire disposed in a hazardous environment provides visible light and serves as a primary, auxiliary, back-up, and/or charging source of IS DC power for external devices disposed in the hazardous environment, such as process control devices and equipment. The luminaire includes a power converter that converts received power into DC power, an IS barrier that converts the DC power into IS DC power native to or utilized by a recipient external device, and a power distribution port via which IS DC power is delivered to the external device. In some configurations, the luminaire monitors communicates statuses, alerts, and/or other information corresponding to delivering IS DC power to one or more external devices to a host and/or portable communication device. The luminaire may include multiple IS barriers of same and/or different IS ratings, and may dynamically control activation/deactivation of the IS barriers and/or usages thereof.

A single rail control system with receiver modules associated with a motherboard of a personal computer and a power supply, comprises a transmitter module, a connector module, and at least one receiver module. One of the first microcontrollers of the transmitter module is controlled by the motherboard or software running on the system/CPU. The connector module is associated with the transmitter module, the power supply, and the receiver module. The connector module is able to be connected in series to increase the number of the receiver module. The receiver module is able to simultaneously receive the control instruction of the first microcontroller and the power provided from the power supply through the connector module, so that a plurality of RGB LEDs are controlled by one of the second microcontrollers of the receiver module to emit light to the outside. Since the receiver module does not require additional power cables, the unnecessary wires can be effectively reduced.

A single rail control system with receiver modules associated with a motherboard of a personal computer and a power supply, comprises a transmitter module, a connector module, and at least one receiver module. One of the first microcontrollers of the transmitter module is controlled by the motherboard or software running on the system/CPU. The connector module is associated with the transmitter module, the power supply, and the receiver module. The connector module is able to be connected in series to increase the number of the receiver module. The receiver module is able to simultaneously receive the control instruction of the first microcontroller and the power provided from the power supply through the connector module, so that a plurality of RGB LEDs are controlled by one of the second microcontrollers of the receiver module to emit light to the outside. Since the receiver module does not require additional power cables, the unnecessary wires can be effectively reduced.

A device and a method for providing an electrical current to an electrical load is disclosed. In particular, the device comprises a memory storage device for storing a plurality of ideal voltage waveforms; an electronic controller arranged in data communication with the memory storage device, the electronic controller operable to select one of the plurality of ideal voltage waveforms to compute a reference voltage and a switching period based on a predetermined rule; and an electronic switch arranged to receive the switching period to switch the electronic switch between an on state and an off state, wherein the electrical current is calculated based on a function of the reference voltage and the switching period of the electronic switch.

A method of controlling a power convertor to perform dimming control for a light-emitting diode (LED) load, can include: adjusting a length of a switching period of the power converter in accordance with a dimming signal; and controlling the power converter to generate a drive current corresponding to the dimming signal.

A method of controlling a power convertor to perform dimming control for a light-emitting diode (LED) load, can include: adjusting a length of a switching period of the power converter in accordance with a dimming signal; and controlling the power converter to generate a drive current corresponding to the dimming signal.

Disclosed is an integrated multifunctional drive power supply for an LED lamp, including a drive power supply housing in which a main control panel is arranged and includes a drive power supply module, a dimming module, and a color temperature regulation module, wherein an MCU processor is arranged in the drive power supply module; a dimming signal interface of the dimming module is connected with a dimming port of the drive power supply module; a dimming signal output end of the dimming module is connected with a dimming power signal input end of the LED lamp; a color temperature regulation signal interface of the color temperature regulation module is connected with an LED output port of the drive power supply module; and a color temperature signal output end of the color temperature regulation module is connected with a color temperature regulation signal receiving end of the LED lamp.