Patent application number | Description | Published |
20100117541 | Lighting Device - A lighting device having a built-in driver circuitry is provided. The object of the present invention is to provide a lighting device having a built-in driver circuitry for driving the lighting in order to be installed in existing lighting fixtures and for driving the lighting. The lighting device comprises at least one fluorescent lamp and a built-in driver circuitry. | 05-13-2010 |
20100213865 | Pulse Width Modulation Control Device - The present invention relates to a pulse-width modulation (PWM) control device, especially to a PWM control device for use with a TRIode for an Alternating Current (TRIAC) dimmer. The PWM control device is comprised of a load, a rectifier, a PWM control module and a PWM controllable ballast. The load may be a gas discharge lamp, a motor, a heating device or a light emitting diode lamp. The rectifier is connected to a power module and rectifies a truncated sinusoidal voltage from the power module to a pulsating truncated direct current (DC) voltage. The PWM control module is connected to the power module and the rectifier and generates a PWM control signal. The PWM controllable ballast is driven by a boost circuit and is controlled by the PWM control signal that limits current to a proper value for the load. | 08-26-2010 |
20100225218 | Lighting Device - The lighting device in accordance with the present invention comprises a base, at least one ruminant and an electronic module. The base is a lamp connector and comprises a contact and an insulated cap. The at least one luminant is mounted on the base. The electronic module drives the at least one luminant, is mounted on the base and is connected electrically to the base. | 09-09-2010 |
20100244711 | Self-Calibrating White Light Emitting Diode Module - The self-calibrating WLED module in accordance with the present invention providing precisely matched current outputs by matching each output current to a reference current, wherein matching a current output to a current reference is done sequentially for a number of current outputs, restarting at a first current output after the last has been matched to the reference current. The module may be implemented with components that comprise multiple WLED strings, a controller, a transconductance amplifier, an input voltage, a generator, a reference module and multiple current regulators. The current regulators provide required current respectively to WLED strings by varying the current through the WLED strings. | 09-30-2010 |
20100283403 | Capacitance Reducing Method for a Pulsed Activated Device and Associated Devices - The present invention relates to a capacitance reducing method for a pulsed activated device and associated devices, especially to a pulsed activated device having a capacitor, which improves power factor as well as eliminating the need for large capacitance. The method comprises acts of rectifying an AC voltage to a pulsating DC voltage, sensing a zero-crossing point of the pulsating DC voltage, synchronizing the pulsating DC voltage, setting pulse duration in a pulse period and turning ON and OFF of a pulsed activated device. The device comprises a load, a rectifier, a capacitor, a driver, a controller and an optional PFC circuit. | 11-11-2010 |
20100320927 | Power Reforming Methods and Associated Multiphase Lights - The present invention relates to power reforming methods and associated multiphase lights, especially to power reforming methods and associated multiple lights that selectively turn ON and OFF to reform current to follow voltage appropriately, which provides better heat dissipation, improving power factor and color mixing capability. The method comprises acts of rectifying an AC voltage to a pulsating DC voltage, synchronizing an internal time base signal to the pulsating DC voltage, setting pulse duration in a pulse period and turning ON and OFF of an electronic device. The device comprises at least two loads, a rectifier, at least two drivers and a controller. | 12-23-2010 |
20110080104 | Line synchronized Electrical Device And Controlling Method Thereof - A controlling method for an electrical apparatus and a device thereof are provided in the present invention. The method includes the steps of: (a) providing an electrical apparatus and an AC power; (b) generating a control signal synchronized to the AC power; and (c) controlling the electrical apparatus by the control signal. The device includes a threshold detector, a phase-locked loop coupled to the threshold crossing detector and an output circuit coupled to the phase-locked loop. | 04-07-2011 |
20110084619 | Light Emitting Diode Selection Circuit - The present invention relates to a Light Emitting Diode (LED) selection circuit for an LED driver that drives multiple unequal lengths of LED strings, which selectively turns the LED strings ON and OFF corresponding to an input alternating current (AC) line voltage. The LED driver provides optimal efficiency as input AC line voltage varies from low to high voltages (i.e. 90V to 150V for nominal 120 VAC operation and 190V to 250V for nominal 220 VAC operation). Thus The LED driver can be used internationally since it accepts voltages from virtually every industrialized country in the world. The LED selection circuit in accordance with the present invention comprises a rectifier, multiple LED strings, multiple current sources and a controller. The controller generates multiple signals to the corresponding current source and turns ON and OFF the LED strings. | 04-14-2011 |
20110221401 | Power Factor Compensating Method - An approach is provided for a power factor compensating method to compensate other electronic devices that use a common power source in order to improve power factor from the perspective of a power company. The other electronic device is a type of a non-linear load, and the method enables a compensator to receive a supply voltage from the power source commonly connected to the traditional electronic devices and disables a load of the compensator for a period. The period corresponds to a range that makes an overall supply current more proportional to the supply voltage. | 09-15-2011 |
20120086393 | Device and Method for an Intermittent Load - An approach is provided for minimizing capacitance requirements of a filter capacitor of a charging device for an intermittent load. A method for charging an intermittent load that is able to pulse on and off periodically without compromising the utility of the load. The method comprises setting timestamps relating to a waveform of an input Alternating Current (AC) voltage. The timestamps are synchronized to the AC voltage and comprise on times and off times that turn the intermittent load off and on. The method further comprises charging the intermittent load during the on times. Therefore, the capacitance of the filter capacitor used for the intermittent load can be significantly reduced since there will be no voltage drop when the intermittent load has been turned off. | 04-12-2012 |
20120098650 | Device and Method For Setting Adjustment Control - A device and a method are provided for setting adjustment control for a device. The method comprises acts of generating a time base signal that is synchronized to an Alternating Current (AC) voltage, and generating a modulated AC voltage in response to an input control signal, which is referenced to the time base signal. The modulated AC voltage has a setting pattern that is formed by interrupting the AC voltage. The method further comprises acts of using the modulated AC voltage to change the device to a desired setting. The desired setting is determined from the corresponding setting pattern. | 04-26-2012 |