scispace - formally typeset
Patent

Adaptive Current Regulation for Solid State Lighting

Reads0
Chats0
TLDR
In this paper, the authors describe an apparatus, system and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch.
Abstract
Exemplary embodiments provide an apparatus, system and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. An exemplary system comprises: a switching power supply; solid state lighting; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; and a second adaptive interface circuit to create a resonant process. An exemplary apparatus comprises: a switching power supply; and an adaptive interface circuit comprising a resistive impedance coupled in series to a reactive impedance to conduct current from the first switch in a first current path in a default mode, and further comprising a second switch coupled to the reactive impedance to conduct current from the first switch in a second current path, with the adaptive interface circuit further damping oscillation when the first switch turns on.

read more

Citations
More filters
Patent

Wireless lighting control system

Swapnil Bora, +1 more
TL;DR: A lighting device includes a DC/DC power converter, a controller/processor, a light emitting diode (LED) current control circuit, and two or more LEDs comprising at least a first color LED and a second color LED electrically connected to the LED current controller.
Patent

Switching power converter control with triac-based leading edge dimmer compatibility

TL;DR: In this article, a triac-based dimmer is configured to phase modulate a supply voltage to the dimmer so that an output voltage has a substantially uninterrupted phase delay during each half-cycle of the supply voltage during the dimming period.
Patent

Led based lighting application

TL;DR: In this paper, the authors present an LED assembly comprising a serial connection of two or more LED units, each LED unit comprising one or more LEDs, with a controllable switch for substantially shortcircuiting the LED unit.
Patent

AC driven solid state lighting apparatus with LED string including switched segments

TL;DR: In this article, a diode selection circuit for a light emitting apparatus according to some embodiments includes a plurality of light emitting devices coupled in series, including a comparator configured to receive a rectified AC input signal and a reference voltage and to generate a control signal in response to comparison of the input signal with the reference voltage.
Patent

Lighting system with power factor correction control data determined from a phase modulated signal

TL;DR: In this article, the phase delay in one or more cycles of the phase modulated signal allows the power factor correction (PFC) controller to determine the peak voltage, which is a PFC control parameter used by the PFC controller to control power factor corrections and generation of a link voltage.
References
More filters
Patent

Tile lighting methods and systems

TL;DR: In this paper, a tile lighting system is provided in which an interior space of a tile is lit by LEDs, such as in a grid or edge-lit formation, and a light diffusing panel is disposed over the interior space.
Patent

White LED luminary light control system

TL;DR: In this article, an LED luminary system for providing power to LED light sources to generate a desired light color consisting of a power supply stage configured to provide a DC current signal.
Patent

Dimmable LED-based MR16 lighting apparatus methods

TL;DR: In this paper, the authors proposed a controllable power via an A.C. power source to LED-based lighting devices having an MR16 configuration, which can be controlled by conventional dimmers.
Patent

Power supply for leds

TL;DR: In this article, the power supply for LEDs is described, where a current controller compares sensed current to a reference current and generates a feedback signal which is processed by a power factor corrector to adjust the current flow through the transformer supplying current to the LEDs.
Patent

Impedance matching circuit for current regulation of solid state lighting

TL;DR: In this article, the authors describe an impedance matching circuit for providing variable power from a dimmer switch having a triac to a switching power supply couplable to solid-state lighting.