Class / Patent application number | Description | Number of patent applications / Date published |
315268000 | Discharge control discharge device load | 12 |
20080218099 | Method of programming a lighting preset from a radio-frequency remote control - The present invention provides a method of programming a preset intensity of a dimmer switch from a radio-frequency (RF) remote control. A user is able to adjust the intensity of the lighting load to a new intensity and subsequently press and hold a preset button on the remote control to program the new intensity as the preset intensity. The remote control transmits a wireless transmission to the dimmer switch, which immediately responds to the actuation of the preset button by controlling the intensity of the lighting load to an initial preset intensity. The dimmer switch then blinks a light-emitting diode representative of the new intensity to provide feedback that the dimmer switch is in the process of programming the preset intensity to the new intensity. Eventually, the dimmer switch stores the new intensity as the preset intensity and stops blinking the light-emitting diode. | 09-11-2008 |
20090001900 | Device for Fluorescent Tube Armatures - The present invention relates to a device for fluorescent tube armatures, the device being intended to replace a previously occurring fluorescent tube. The device has a light emitting diode unit ( | 01-01-2009 |
20090273299 | Apparatus and Method for Controlling the Filament Voltage in an Electronic Dimming Ballast - An electronic dimming ballast comprises a filament turn-off circuit for controlling the magnitudes of filament voltages supplied to the filaments of a gas discharge lamp. Each of a plurality of filament windings is directly coupled to one of the filaments and is operable to supply a small AC filament voltage to the filaments. The plurality of filament windings and a control winding are loosely magnetically coupled to a resonant inductor of an output circuit of the ballast. A controllably conductive device is coupled across the control winding. When the controllably conductive device is conductive, the voltage across the control winding and the filament windings falls to zero volts. The controllably conductive device is driven with a pulse-width modulated (PWM) signal so as to control the magnitudes of the filament voltages. The filament voltages are provided to the filaments before striking the lamp, and when dimming the lamp near low end. | 11-05-2009 |
20090322243 | DRIVING CIRCUIT AND METHOD OF BACKLIGHT MODULE - A driving circuit includes a signal generator, a resonant circuit, a control circuit and an adjusting circuit. The signal generator is utilized for generating an alternating current (AC) signal having a fixed frequency. The resonant circuit is coupled to the signal generator, and is utilized for generating an oscillation signal to drive a backlight source according to the alternating current signal. The control circuit is utilized for providing a control signal. The adjusting circuit is coupled to the control circuit, the resonant circuit and the backlight source, and is utilized for providing an impedance according to the control signal to thereby adjust a current value of the backlight source. | 12-31-2009 |
20110181197 | LIGHT SOURCE TURN-ON/OFF CONTROLLER - A light source turn-on/off controller includes an input section of a turn-on/off timing signal, a PWM signal generating section for generating a pulse signal responding to a rise or a fall of the timing signal, a duty cycle of the pulse signal changing so as to simulate a rise or a fall of emission in turn-on or turn-off of a filament, an emission control section for controlling an emitting section responding to the pulse signal from the PWM signal generating section, and a storage section for storing a control data table for duty cycle control by the PWM signal generating section. The control data table includes a rise table to be referred to in the rise of emission and a fall table to be referred to in the fall of emission, and each of the rise table and the fall table indicates association between elapsed time from the rise or the fall of the timing signal and the duty cycle of the pulse signal, and a relationship between the tables indicates that they cannot be superposed on each other. | 07-28-2011 |
20130229128 | Circuit arrangement and method for operation of a high-pressure discharge lamp below its nominal power - In various embodiments, a method for operating a high-pressure discharge lamp below its nominal power is provided, wherein the high-pressure discharge lamp is operated at nominal power with an alternating current having a predetermined operating frequency, and the lamp voltage is measured during a half-cycle at least at the start of a half-cycle and at the end of a half-cycle. The method may include: reducing the present operating frequency below an upper limit; and changing the current shape of the alternating current to a monopitch roof-shaped current shape, which is dependent on the difference in the lamp voltages at the end and at the start of the half-cycle. | 09-05-2013 |
20130229129 | METHOD AND DEVICE FOR DRIVING AN HID LAMP - A method for driving and dimming an HID lamp ( | 09-05-2013 |
20140176003 | DISCHARGE SWITCH DEVICE FOR IGNITION EXCITATION SYSTEM - A discharge switch device is provided that includes a comparator portion, a temperature compensation diode, and a trigger portion. The comparator portion is configured to compare an input voltage value to a reference voltage value. The temperature compensation diode is configured to reduce variation of the reference voltage value. The trigger portion is configured to discharge stored energy when the input voltage value exceeds the reference voltage value. | 06-26-2014 |
20140217920 | Toggle Switch And Variable Actuator Control - The present invention is directed to a device for regulating an amount of electrical power provided to at least one electrical load, the device comprising a control circuit disposed in the housing and including at least one switch device movable between a first switch state and a second switch state. The control circuit further includes a power control element that has a power control actuator configured to adjust the amount of power provided to the at least one electrical load. A variable control actuator is accessible to the user via the control aperture and coupled to the power control actuator via a linkage structure. The linkage structure further includes a pin and channel arrangement configured to convert a user control action into a power control actuator adjustment by translating rotational motion into linear motion or linear motion into rotational motion. | 08-07-2014 |
315270000 | Plural control potentials | 1 |
315271000 | Plural pulsating and/or A.C. potentials | 1 |
20110204811 | METHOD OF DRIVING A SHORT-ARC DISCHARGE LAMP - The invention describes a method of driving a gas-discharge lamp ( | 08-25-2011 |
315274000 | Transformer in the control circuit | 1 |
20110127924 | FREQUENCY MODULATION METHOD AND DEVICE FOR HIGH INTENSITY DISCHARGE LAMP - An electronic control gear for a HID lamp receives an input signal for operating the lamp and frequency modulates the input signal to generate a frequency modulated output signal that drives an arc of the lamp. The frequency modulation of the output signal sweeps continuously between a low frequency modulation and a high frequency modulation, the low frequency modulation being a frequency f | 06-02-2011 |
315275000 | Condenser in the control circuit | 1 |
20090160351 | ELECTRIC DISCHARGE LIGHT-REGULATION MATCHING CIRCUIT - An inexpensive electric discharge light-regulation matching circuit for use with a standard light regulator to regulate the light of an electric discharge without causing flickering is disclosed to include a resonance unit, which comprises a first capacitor and a second capacitor connected in series and a first inductance connected in parallel to the first capacitor and second capacitor, a converter circuit connected to the resonance unit for converting an alternating current into a direct current, a half-bridge output unit, which comprises two electrically controlled switches connected in series to the converter unit with the respective control end respectively connected to a respective oscillation unit, and a voltage feedback unit, which is connected to the half-bridge output unit and the converter unit and comprises a second inductor, a third capacitor and a fourth capacitor that are connected in series. Further, the resonance frequency of the resonance unit is about a predetermined multiple of the working frequency of the half-bridge output unit. | 06-25-2009 |