438 436 voltage indicates a particular dimming level. The drive cur rent varies for different
dimming levels. However, the light source ballast controls drive current so that the drive …

A driver arrangement for LED light sources includes a transformer having primary and
secondary winding connections. A first electronic switch (SW1) controls current flow through …

BACKGROUND Light-emitting diode (LED) light Sources are often used in place of or as
replacements for conventional incandescent, fluorescent, or halogen lamps, and the like …

A light-emitting diode (LED) driver is adapted to control either the magnitude of the current
conducted through a LED light Source or the magnitude of a Voltage generated across the …

(57) ABSTRACT A load control device for controlling the amount of power delivered to an
electrical load is able to operate in a burst mode to adjust the amount of power delivered to …

A dimming controller for controlling dimming of a light-emitting diode (LED) light source
includes a monitoring terminal and a control terminal. The monitoring terminal receives a …

BACKGROUND This invention relates to Solid-state light sources and par ticularly to light
emitting diodes (LEDs). More particularly, the present invention relates to an apparatus for …

BACKGROUND Electromagnetic interference (EMI) is a disturbance that interrupts,
obstructs, or otherwise degrades or limits the effective performance of a circuit …

2. Prior Art Light emitting diodes are used in many applications to light displays or buttons,
such as on cell phones, pagers, computers, etc. In such applications, it is desirable to have a …

A circuit efficiently drives light emitting diodes (LEDs). The circuit uses a switching regulator
device instead of a standard resistor to limit current to the LEDs. The switching regulator …