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.

Disclosed is an LED driving apparatus. The LED driving apparatus comprises an LED driving circuit, a power supply unit for supplying a driving voltage to the LED driving circuit, a voltage ripple controller located between the LED driving circuit and the power supply unit, and a switching unit for controlling a voltage supplied to the LED driving circuit by turning on or off the voltage ripple controller according to a duty ratio of a pulse width modulation (PWM) dimming signal.

Disclosed is an LED driving apparatus. The LED driving apparatus comprises an LED driving circuit, a power supply unit for supplying a driving voltage to the LED driving circuit, a voltage ripple controller located between the LED driving circuit and the power supply unit, and a switching unit for controlling a voltage supplied to the LED driving circuit by turning on or off the voltage ripple controller according to a duty ratio of a pulse width modulation (PWM) dimming signal.

An isolated converter has a transformer with a primary winding (in a primary side circuit) and a secondary winding magnetically coupled to the primary winding. A first Y-capacitor is electrically connected between the primary side circuit and the secondary winding. The detection circuit is for detecting information at the primary side, preferably information about the input supply received at the input, and more preferably the information is that whether the input supply is an alternating current (AC) supply or a direct current (DC) supply, and the detection circuit includes the first Y-capacitor. The detection circuit enables the detected information to be provided directly to a secondary side controller, without needing opto-isolators or other isolated data transmission. The detection circuit (20) comprises a capacitor divider comprising the first Y-capacitor (C5), and further comprising a second impedance and a third capacitor (C7) connected in series with the first Y-capacitor (C5), with the first Y-capacitor (C1), the second impedance, and the third capacitors (C5, C6, C7) in series between a primary side ground (PGND) and the input (12), wherein the detection circuit is for detecting a voltage across a second impedance to obtain a signal indicating the information at the primary side. Preferably the second impedance comprises a second capacitor (C6).

A multimode switch includes a line voltage switch, coupled to a line voltage and a device; a switch controller that directs the line voltage switch to provide line voltage to, and subsequently remove line voltage from, the device, and that receives first identifying information and a functional group designation for the device, and that controls the device according to the first identifying information and the functional group designation; and a ground leakage power supply, coupled to an AC hot line and to an earth ground, that generates a regulated voltage to power the switch controller without requiring connection to an AC neutral line, while limiting ground leakage current to the earth ground to a prescribed leakage value.

A vehicle lamp includes a turn signal lamp, a daytime running lamp, and a position lamp. A first driving circuit drives a first light source that is the turn signal lamp. A second driving circuit drives a second light source that serves as both the daytime running lamp and the position lamp. A signal processing device executes a software program to control the first driving circuit and the second driving circuit based on the turn synchronization signal, the first switch-on request, and the second switch-on request.

A configurable controllable under cabinet lighting fixture and system for controlling the same are provided. An example configurable controllable under cabinet lighting fixture includes one or more lighting elements positioned from a proximal end of a lighting fixture housing to a distal end of a lighting fixture housing. The example configurable controllable under cabinet lighting fixture further includes circuitry configured to control one or more first parameters associated with the one or more lighting elements. The circuitry is further configured to control one or more second parameters associated with one or more nearby configurable controllable under cabinet lighting fixtures located within a proximity threshold of the configurable controllable under cabinet lighting fixture. The lighting fixture housing is configured for affixing to a downward facing surface of a mounting surface.

A configurable controllable under cabinet lighting fixture and system for controlling the same are provided. An example configurable controllable under cabinet lighting fixture includes one or more lighting elements positioned from a proximal end of a lighting fixture housing to a distal end of a lighting fixture housing. The example configurable controllable under cabinet lighting fixture further includes circuitry configured to control one or more first parameters associated with the one or more lighting elements. The circuitry is further configured to control one or more second parameters associated with one or more nearby configurable controllable under cabinet lighting fixtures located within a proximity threshold of the configurable controllable under cabinet lighting fixture. The lighting fixture housing is configured for affixing to a downward facing surface of a mounting surface.

A medical electrical equipment power tap has multiple sockets and a power cord with a maximum current rating. The power tap includes a display to indicate information related to an instantaneous current draw of the power tap. The power tap also includes an electrical circuit which determines whether the instantaneous current draw exceeds a predetermined maximum allowed current which is less than the maximum current rating. The display provides a visual indication when the power tap's current draw exceeds the maximum allowed value, signifying that at least one item of medical electrical equipment should be unplugged from the power tap. The electrical circuit includes a current loop which passes through a structural portion of the power tap's housing for independently gauging the instantaneous current draw using a clamp probe.