| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315094000 | WITH CATHODE OR CATHODE HEATER SUPPLY CIRCUIT | 28 |
| 20080278080 | Ballast With Filament Heating And Ignition Control - A ballast ( | 11-13-2008 |
| 20090236991 | MAGNETRON - A magnetron has an anode | 09-24-2009 |
| 20090289555 | ELECTRON EMISSION DEVICE COMPRISING CARBON NANOTUBES YARN AND METHOD FOR GENERATING EMISSION CURRENT - An exemplary electron emission device includes an electron emitter, an anode opposite to and spaced apart from the electron emitter, a first power supply circuit, and a second power supply circuit. The first power supply circuit is configured for electrically connecting the electron emitter and the anode with a power supply to generate an electric field between the electron emitter and the anode. The second power supply circuit is configured for electrically connecting the electron emitter with a power supply to supply a heating current for heating the electron emitter whereby electrons emit therefrom. Methods for generating an emission current with a relatively higher stability also are provided. | 11-26-2009 |
| 20100134012 | CIRCUIT ARRANGEMENT, AND METHOD FOR THE OPERATION OF A FLUORESCENT LAMP - A circuit arrangement is provided for operating a fluorescent lamp with a first and a second filament, the circuit arrangement including a heater for the first and the second filament, wherein the circuit arrangement furthermore includes: an apparatus for storing at least one threshold value for at least one operational parameter of the fluorescent lamp; an apparatus for determining the value of the at least one operational parameter; and a control apparatus, which is configured to activate the heater for the first and the second filament for a predeterminable period of time in the event of the at least one threshold value for the at least one operational parameter being exceeded by the determined value of the at least one operational parameter. | 06-03-2010 |
| 20110221345 | CATHODE HEATING DEVICE OF MAGNETRON, MICROWAVE GENERATING DEVICE AND METHOD OF PREHEATING CATHODE OF MAGNETRON - This disclosure provides a device for heating a cathode of a magnetron, which includes a heater for heating the cathode of the magnetron, a heater current detecting module for detecting a value of heater current that flows into the heater, and a control module for determining the completion of preheating of the magnetron based on a change in the heater current. | 09-15-2011 |
| 20130154479 | APPARATUS AND METHODS FOR CAPACITIVELY COUPLED PLASMA VAPOR PROCESSING OF SEMICONDUCTOR WAFERS - A capacitively coupled plasma reactor comprising a processing chamber, a first electrode, a second electrode and a thermoelectric unit. The processing chamber has an upper portion with a gas inlet and a lower portion, and the upper portion is in fluid communication with the lower portion. The first electrode has a front side and a backside and is positioned at the upper portion of the processing chamber. The second electrode is positioned in the lower portion of the processing chamber and is spaced apart from the front side of the first electrode. The thermoelectric unit is positioned proximate to the backside of the first electrode and is capable of heating and cooling the first electrode. | 06-20-2013 |
| 20150028743 | DEVICE FOR SUPPLYING VOLTAGE TO THE CATHODE OF A MASS SPECTROMETER - A simplified device for voltage supply of the cathode of a mass spectrometer comprises a push-pull transformer, wherein, apart from the normal rectifier diodes ( | 01-29-2015 |
| 20150294851 | HIGH PRESSURE DISCHARGE LAMP AND LIGHTING METHOD THEREOF - The present high-pressure discharge lamp is composed of an arc tube part having an internal space, a pair of tungsten electrodes disposed in opposition to each other within the internal space, and mercury and halogen encapsulated in the internal space. The halogen is excessively encapsulated into the internal space relatively to the capacity of the internal space so as to establish an appropriate halogen cycle when the mercury partially deposits without evaporating. | 10-15-2015 |
| 315095000 | Plural load device systems | 3 |
| 315097000 | Pulsating or A.C. supply to the cathode or heater circuit | 3 |
| 20110260620 | LIGHTING DEVICE, BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE - A lighting device has: a lighting circuit for lighting a plurality of hot-cathode lamps having filaments at both ends; preheating circuits for preheating the individual filaments of the hot-cathode lamps; at least one first circuit substrate arranged near filaments on one side of the hot-cathode lamps; and at least one second circuit substrate arranged near filaments on the other side of the hot-cathode lamps. The lighting circuit is packaged in either the first circuit substrate or the second circuit substrate, and the preheating circuits are packaged or wired by being divided in the first circuit substrate and the second circuit substrate. | 10-27-2011 |
| 20120274213 | DRIVING APPARATUS FOR FLUORESCENT TUBES AND METHOD THEREOF - A driving apparatus for fluorescent tubes and a method thereof are provided. The provided driving apparatus changes a sinusoidal driving signal used for driving a fluorescent tube by detecting a current flowing through the fluorescent tube. Accordingly, the current flowing through the fluorescent tube can be conformed to specifications/regulations. Under the condition of being capable of detecting current(s) flowing through fluorescent tube(s), the provided driving apparatus can be suitable for driving fluorescent tubes with different specifications, categories and brands, and would not affect the lifetime of the fluorescent tubes and would not cause the problem of insufficient luminance. | 11-01-2012 |
| 20160205755 | DRIVING DEVICE AND ILLUMINATION SYSTEM | 07-14-2016 |
| 315098000 | Plural cathodes or heaters in the load device | 3 |
| 20120098433 | HOT CATHODE PREHEATING START DISCHARGE LAMP - A hot cathode preheating start discharge lamp comprises a lamp tube, a first electrode, a second electrode, a first heating element and a second heating element. The lamp tube has a sealed housing chamber. The first and second electrodes have respectively one end held in the housing chamber and another end connected to a power source. The first and second heating elements are spaced from the first and second electrodes without connecting therewith and have respectively another end connected to a discharge preheating controller or an electronic ballast. Thereby the invention does not need tungsten filaments or electronic powder coated on the tungsten filaments to generate a great amount of electrons like the conventional techniques do. Thus the problems of burnout and fracture of the tungsten filaments or exhaustion of electronic powder can be eliminated, and the lifespan of the lamp tube can be enhanced. | 04-26-2012 |
| 20140175980 | SYSTEM AND METHOD FOR IMPROVED RAPID CYCLING PERFORMANCE OF INSTANT START FLUORESCENT LAMPS - Provided is a system for improving rapid cycling performance of instant start compact self-ballasted fluorescent lamps. The system provides a ballast driver circuit including a lamp driver, a lamp voltage detector, an additional cathode heating driver, and a wire lamp. The additional cathode heating driver applies an additional amount of current to the cathodes of the wire lamp during the glow phase after the ignition of the lamp. | 06-26-2014 |
| 20140265846 | SCALABLE AND UNIFORMITY CONTROLLABLE DIFFUSION PLASMA SOURCE - A method of treating a substrate with plasma is described. In particular, the method includes disposing a substrate in a plasma processing system, disposing a hollow cathode plasma source including at least one hollow cathode within the plasma processing system, and disposing a grid between the cathode outlet of the plurality of hollow cathodes and the substrate. The method further includes electrically coupling the grid to electrical ground, coupling a voltage to the at least one hollow cathode relative to electrical ground, and generating plasma in hollow cathode by ion-induced secondary electron emission of energetic electrons that move along a first trajectory, and diffusing lower energy electrons along a second trajectory across a first region of the interior space between the cathode outlet and the grid, through the grid, and into a second region of the interior space in fluid contact with the substrate. | 09-18-2014 |
| 315101000 | Discharge device and/or rectifier in the cathode or heater circuit | 2 |
| 20120126701 | System And Apparatus For Cathodoluminescent Lighting - A cathodoluminescent lighting system has a light emitting device having an envelope with a transparent face, a cathode for emitting electrons, an anode with a phosphor layer and a conductor layer. The phosphor layer emits light through the transparent face of the envelope. The system also has a power supply for providing at least five thousand volts of power to the light emitting device, and the electrons transiting from cathode to anode are essentially unfocused. Additional embodiments responsive to triac-type dimmers with intensity and color-changes in response to dimmer control. A power-factor-corrected embodiment is also disclosed. | 05-24-2012 |
| 20140265847 | SOFT-START ADAPTER FOR AC HEATED ELECTRON GUN - A circuit to power an electron source includes a filament transformer comprising a primary side and a secondary side, a high-voltage transformer coupled to the filament transformer and the electron source, and an alternating current (AC) current limiter coupled in series with the primary side or the secondary side of the filament transformer. The AC current limiter includes a diode bridge and a current-limiting device in the diode bridge. | 09-18-2014 |
| 315102000 | Delayed application of the discharge potential | 2 |
| 20100156299 | Ballast for a Discharge Lamp With Adaptive Preheating - The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E | 06-24-2010 |
| 20140152179 | PREHEATING CIRCUIT FOR ELECTRONIC BALLAST - A filament preheat module for preheating a filament of a lamp powered by a power circuit including an inverter, the inverter comprising an inductively coupled conductor, an inductively coupled conductor of the filament preheat module magnetically coupled to the inductively coupled conductor of the inverter to power the filament during preheating, and a switching circuit configured to electrically connect the power from the inductively coupled conductor of the filament preheat module to the filament. The switching module is configured to cutoff the power to the filament from the filament preheat module after a predetermined time period during preheating. | 06-05-2014 |
| 315105000 | Pulsating or A.C. supply to the cathode or heater circuit | 8 |
| 20100213850 | FLUORESCENT DIMMING BALLAST - A dimmable ballast and methods are presented in which the operating frequency of a self-oscillating inverter is controlled according to a sensed lamp current for dimming control or cathode heating, and an AC bus voltage of the inverter is controlled to be at or below a voltage threshold value to prevent over driving operating lamps when one or more lamps are being replaced. | 08-26-2010 |
| 20140333202 | SPOT MODE OPERATION FOR A DISCHARGE LAMP - A lighting device and a method for operating a discharge lamp ( | 11-13-2014 |
| 20150084507 | DISCHARGE LAMP WITH CONTACT PATHS WITHIN THE BASE | 03-26-2015 |
| 315106000 | Automatic cut-out or voltage regulator in the cathode or heater circuit | 5 |
| 20080231197 | POWER SUPPLY UNIT, HIGH-FREQUENCY CIRCUIT SYSTEM AND HEATER VOLTAGE CONTROL METHOD - At the time of restoration of the power supply after a power failure, a voltage higher than that in the normal operation mode is supplied to a heater. After a lapse of a predetermined time, the voltage to be supplied to the heater is switched into the voltage in the normal operation mode while a control signal for stating the operation of an electron tube is output. Alternatively, at the time of power activation, the rate of change of current flowing through a heater is determined for every period of time. When the rate of change becomes equal to or lower than a predetermined threshold, a voltage higher than that in the normal operation mode is supplied to the heater, and after a lapse of a predetermined time, the voltage to be supplied to the heater is switched into the voltage in the normal operation mode while a control signal for stating the operation of the electron tube is output. | 09-25-2008 |
| 20090072746 | RESONANT IGNITOR CIRCUIT FOR LAMP WITH A VARIABLE OUTPUT CAPACITANCE BALLAST - A resonant igniter circuit ( | 03-19-2009 |
| 20090184645 | METHOD AND CIRCUIT FOR HEATING AN ELECTRODE OF A DISCHARGE LAMP - The present invention provides a method and circuit for accurately controlling heating of an electrode of a discharge lamp. According to the present invention a feedback voltage is generated. The feedback voltage is representative of an electrode voltage, in particular an electrode voltage when the discharge lamp is in a non-burning state, the electrode voltage then representing a heating voltage. The feedback voltage is compared to a predetermined reference voltage, which represents a desired heating voltage. The comparator generates and outputs an error signal representing a difference between the actual feedback voltage and the reference voltage. The error signal is supplied to a power supply circuit. The power supply circuit generates the alternating supply current corresponding to the error signal such that the electrode voltage is adjusted towards the desired heating voltage. | 07-23-2009 |
| 20090273283 | VOLTAGE FED PROGRAMMED START BALLAST - A lighting ballast ( | 11-05-2009 |
| 20140049161 | INSTANT START BALLAST SYSTEM - A program-start ballast ( | 02-20-2014 |
| 315107000 | Automatic cut-out or voltage regulator in the cathode or heater circuit | 2 |
| 20120262063 | FLOURESCENT LUMINAIRE DRIVE CIRCUIT - A circuit configuration for powering high-frequency fluorescent lamps with rapid start capability has input terminals connected to a ballast and output terminals connected to a fluorescent lamp. A transformer module has at least one primary winding that receives a power signal from the ballast and two or more secondary windings that are magnetically coupled to the primary winding. The secondary windings power the cathodes of the fluorescent lamp. The energizing signals are at a high frequency for powering high-frequency fluorescent lamps with rapid start capability. Tuning capacitors are used for tuning the high-frequency power signals. A control device, for instance for occupancy sensing and/or daylight harvesting may be connected into the circuit so as to further raise the efficiency of the luminaire by only energizing the lamp when it is useful. | 10-18-2012 |
| 20140055033 | PROGRAMMED START CIRCUIT FOR BALLAST - A programmed start ballast circuit is presented having a mode control circuit to selectively switch an inverter output load to control operation for cathode preheating, step dimming and/or anti-arcing operation. | 02-27-2014 |
