An example circuit includes a substrate having a surface and electrically conductive lines. The electrically conductive lines extend in a direction substantially parallel to the surface and substantially orthogonal to a virtual centerline. The circuit also includes first and second instances of a driver device having respective first and second sides, and respective line outputs. The line outputs are arranged along the first side of the respective instance of the driver device, and the respective first side of each of the first and second instances of the driver device are nearer the virtual centerline than the second side thereof. The line outputs of the first instance of the driver device are coupled to a first set of the electrically conductive lines, and the line outputs of the second instance of the driver device are coupled to a second set of the electrically conductive lines.

An example circuit includes a substrate having a surface and electrically conductive lines. The electrically conductive lines extend in a direction substantially parallel to the surface and substantially orthogonal to a virtual centerline. The circuit also includes first and second instances of a driver device having respective first and second sides, and respective line outputs. The line outputs are arranged along the first side of the respective instance of the driver device, and the respective first side of each of the first and second instances of the driver device are nearer the virtual centerline than the second side thereof. The line outputs of the first instance of the driver device are coupled to a first set of the electrically conductive lines, and the line outputs of the second instance of the driver device are coupled to a second set of the electrically conductive lines.

A lighting system is disclosed. The example lighting system includes a printed circuit board. At least one LED circuit and a driver circuit are mounted on the printed circuit board. The at least one LED circuit has a plurality of phosphor coated LEDs. The driver circuit includes at least one bridge rectifier and at least one capacitor. The lighting system also includes a housing including a lens. The lighting system further includes a first power connection lead connected to a first input of the bridge rectifier and a second power connection lead connected to a second input of the bridge rectifier. At least a first portion of each power connection lead is contained within the housing and at least a second portion of each power connection lead extends beyond the housing to enable the printed circuit board to be connected to an AC power source.

A lighting system is disclosed. The example lighting system includes a printed circuit board. At least one LED circuit and a driver circuit are mounted on the printed circuit board. The at least one LED circuit has a plurality of phosphor coated LEDs. The driver circuit includes at least one bridge rectifier and at least one capacitor. The lighting system also includes a housing including a lens. The lighting system further includes a first power connection lead connected to a first input of the bridge rectifier and a second power connection lead connected to a second input of the bridge rectifier. At least a first portion of each power connection lead is contained within the housing and at least a second portion of each power connection lead extends beyond the housing to enable the printed circuit board to be connected to an AC power source.

A light string is provided. The light string includes a plurality of light-emitting components, a first polyvinyl chloride covered wire and a second polyvinyl chloride covered wire. The light-emitting components are configured to emit light having a same color or different colors. A first polyvinyl chloride covered wire is electrically connected to a first terminal of each of the light-emitting components and a first power terminal of a power supply component. The first polyvinyl chloride covered wire receives a first voltage from the first power terminal of the power supply component. The second polyvinyl chloride covered wire is electrically connected to a second terminal of each of the light-emitting components and a second power terminal of the power supply component. The second polyvinyl chloride covered wire receives a second voltage from the second power terminal of the power supply component.

A light string is provided. The light string includes a plurality of light-emitting components, a first polyvinyl chloride covered wire and a second polyvinyl chloride covered wire. The light-emitting components are configured to emit light having a same color or different colors. A first polyvinyl chloride covered wire is electrically connected to a first terminal of each of the light-emitting components and a first power terminal of a power supply component. The first polyvinyl chloride covered wire receives a first voltage from the first power terminal of the power supply component. The second polyvinyl chloride covered wire is electrically connected to a second terminal of each of the light-emitting components and a second power terminal of the power supply component. The second polyvinyl chloride covered wire receives a second voltage from the second power terminal of the power supply component.

A power adapter arrangement configured to provide power to a load is described. The power adapter arrangement may comprise a power adapter having a first interface comprising a first plurality of contact elements, and a second interface comprising a switch configured to control power applied to a load; and a control attachment removably coupled to the power adapter, wherein the control attachment comprises an actuator element configured to make contact with the power adapter in response to a manual actuation of the control attachment; wherein the power adapter further comprises a power control circuit configured to receive the power and provide the power to the load in response to a detection of a manual actuation of the toggle element.

A light-emitting diode (LED) backlight driving circuit is provided. The LED backlight driving circuit includes M LED light-emitting unit groups connected in series and each of the LED light-emitting unit groups includes N LED light-emitting units connected in parallel, where both N and M are an integer greater than 1, wherein each of the LED light-emitting units is connected in series with at least a variable resistor with variable resistance for balancing a voltage difference. The present application further provides a backlight module and a liquid crystal display device manufactured using the LED backlight driving circuit.

A light emitting diode (LED) driving device for driving an LED array including one or more LEDs includes a rectifier configured to provide a rectified voltage obtained from an alternating current (AC) voltage to the LED array, an LED driver configured to sequentially drain an LED driving current from the LED array via a plurality of first nodes, and a first switch circuit connected to the LED array via a plurality of second nodes. The first switch circuit includes a plurality of first switches commonly connected to a first common node which is one of the plurality of first nodes, and respectively connected to the plurality of second nodes, and a first controller configured to control the plurality of first switches to be sequentially turned on and sequentially turned off.

A white-light-emitting inorganic light-emitting-diode (iLED) structure comprises first iLEDs electrically connected in series, each first iLED emitting a different color of light from any other first iLED when electrical power is provided to the first iLEDs, and a second iLED electrically connected to one of the first iLEDs, the second iLED emitting the same color of light as the one of the first iLEDs when electrical power is provided to the first iLEDs. The second iLED can be electrically connected in series or in parallel with the one of the first iLEDs. Such iLED structures can be used at least in displays, lamps, and indicators.