Abstract: Embodiments in accordance with the present invention provide circuits and methods for driving a light-emitting diode (LED) light source. In one embodiment, a printed circuit board (PCB) includes a bridge rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a first switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the first switch coupled in series receive the rectified AC voltage while the first switch is controlled linearly. The circuit further includes a current path coupled in parallel with the LED light source and an illuminated switch coupled between the AC power source and the bridge rectifier.

Abstract: A power system includes a switching circuit, a resonant tank, a feedback circuit, and controller circuitry. The switching circuit including a first switch and a second switch provides a first AC signal. The resonant tank coupled to the switching circuit receives the first AC signal and generating a second AC signal for powering a load. The feedback circuit coupled to the load monitors an electrical condition of the load and provides a feedback signal. The controller circuitry coupled to the converter controls the switching circuit according to the feedback signal so as to control the power to the load. The controller circuitry is integrated in a first die. The first switch is integrated in a second die, and the second switch is integrated in a third die. The first die, said second die and said third die are mounted on and electrically interconnected to a platform compatible with through-hole technology. The platform and the resonant tank are further assembled on a printed circuit board.

Abstract: Embodiments in accordance with the present invention provide circuits and methods for driving a light-emitting diode (LED) light source. In one embodiment, a printed circuit board (PCB) includes a bridge rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a first switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the first switch coupled in series receive the rectified AC voltage while the first switch is controlled linearly. The circuit further includes a current path coupled in parallel with the LED light source and an illuminated switch coupled between the AC power source and the bridge rectifier.

Abstract: Embodiments in accordance with the present invention provide circuits and methods for driving light sources, e.g., a light-emitting diode (LED) light source. In one embodiment, a printed circuit board (PCB) includes a bridge rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a first switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the first switch coupled in series receive the rectified AC voltage while the first switch is controlled linearly.

Abstract: A power system includes a switching circuit, a resonant tank, a feedback circuit, and controller circuitry. The switching circuit including a first switch and a second switch provides a first AC signal. The resonant tank coupled to the switching circuit receives the first AC signal and generating a second AC signal for powering a load. The feedback circuit coupled to the load monitors an electrical condition of the load and provides a feedback signal. The controller circuitry coupled to the converter controls the switching circuit according to the feedback signal so as to control the power to the load. The controller circuitry is integrated in a first die. The first switch is integrated in a second die, and the second switch is integrated in a third die. The first die, said second die and said third die are mounted on and electrically interconnected to a platform compatible with through-hole technology. The platform and the resonant tank are further assembled on a printed circuit board.

Abstract: In one embodiment, an electrical connector apparatus providing multiple output voltages comprises an input terminal, a DC to DC converter, and a plurality of output terminals. The input terminal receives a DC input voltage. The DC to DC converter converts the DC input voltage to at least one DC output voltage. The output terminals provide the DC output voltage to a number of loads simultaneously. The output terminals have a number of terminal structures configured to be matched to a number of structure requirements of the loads respectively.

Abstract: Thermal management within an electrically powered systems requires monitoring, from time-to-time, both electrical power consumption and temperature within the system. The power consumption and temperature data thus obtained permits developing over time a thermal model for the system. After a thermal model for the system has been thus developed, the model together with the presently sensed electrical power consumption, and the system temperature are used to predict a thermal trend for the system. The predicted thermal trend thus obtained for the system is then used in effecting a temperature control strategy within the electrically powered system.