Class / Patent application number | Description | Number of patent applications / Date published |
315171000 | Discharge device and/or rectifier in one of the supply circuits | 6 |
20090167196 | POWER SUPPLY FOR LIGHT EMITTING DIODE DEVICE - A power supply ( | 07-02-2009 |
20110254455 | DUAL POWER SOURCE PULSE GENERATOR FOR A TRIGGERING SYSTEM - An ablative plasma gun having a dual power source pulse generator is configured to generate a high voltage low current pulse and a low voltage high current pulse. A pair of electrodes are disposed and configured to receive the high voltage low current pulse, and to receive the low voltage high current pulse in response to the high voltage low current pulse. | 10-20-2011 |
20130154487 | TRIAC DIMMER COMPATIBLE LED DRIVER AND METHOD THEREOF - The present invention provides a controller used in a TRIAC dimmer compatible LED driver and method thereof. The controller comprises a dimming signal generator, a dimming signal processor and a switch control circuit. The dimming signal generator receives an AC chopped voltage from a TRIAC dimmer and generates a dimming signal with regulated duty cycle in accordance with the AC chopped voltage. The dimming signal processor is coupled to the dimming signal generator and generates a processed dimming signal in accordance with the dimming signal. The duty cycle of the processed dimming signal is a sum of a predetermined duty cycle and the duty cycle of the dimming signal. Based on the processed dimming signal and a feedback signal indicative of the current flowing through LED, the switch control circuit generates a control signal to control at least one switch in a switching converter. | 06-20-2013 |
20130241421 | LED HYBRID POWER - A hybrid power supply for a high intensity light includes a power supply coupled to the high intensity light, wherein the power supply has a power rating less than a power rating for the high intensity light, and a battery, the battery having a power rating greater than or equal to the power rating for the high intensity light. A switch is coupled between the high intensity light and the battery, such that when the switch is closed the battery is coupled to the high intensity light, and such that when the switch is open the battery is not coupled to the high intensity light. | 09-19-2013 |
20130300301 | HIGH STABILITY DIMMER - The present invention is aimed at providing a dimmer capable of preventing malfunctions due to noise contamination or waveform distortion of the voltage of an AC power source. The dimmer according to the present invention has a time division control circuit for controlling an effective voltage supplied to a lighting load by regulating the period of time to turn on a switching element, and further includes: a zero-crossing detector section | 11-14-2013 |
20130320866 | LIGHTING SYSTEM WITH REDUCED STANDBY POWER - A lighting system with reduced standby power according to the embodiment includes a main control unit to control a lighting device; a driver to supply the control signal to the lighting device; and an AC-DC converting circuit to supply power to the driver. A method of reducing standby power according to the embodiment includes charging a standby power supply unit with power in a normal mode; checking whether a lighting off signal is transmitted and switching off a lighting, and simultaneously, shutting off the power supplied from the AC-DC converting circuit when the lighting off signal is transmitted; changing an operation mode of a lighting device from a normal mode to a standby mode; checking whether a voltage of the standby power supply unit is less than a predetermined level; and charging the standby power supply unit when the voltage is less than the predetermined level. | 12-05-2013 |