Class / Patent application number | Description | Number of patent applications / Date published |
315240000 |
Electric switch in the condenser circuit
| 41 |
315228000 |
Plural load device systems
| 40 |
315241000 |
Condenser in shunt to the load device and the supply
| 14 |
315239000 |
Transformer in the condenser load device circuit
| 14 |
315245000 |
Resistance in the condenser circuit | 5 |
20110241556 | METHOD OF CONTROLLING A FLUORESCENT LAMP, A CONTROLLER AND A FLUORESCENT LAMP - A method of controlling a Fluorescent Lamp (CFL) is disclosed, which enables the lamp to be dimmed during a quick-start mode in which the lamp current may be boosted. The method involves determining a boost value and a dimming value, and controlling the lamp power in dependence on the boost and dimming values. A dimming threshold may be set, below which (i.e. at dimmer output light levels) the boost function is disabled. Hysteresis may be included in the control, in order to avoid hopping between modes. A controller for use with a fluorescent lamp which is adapted to operate according to such a method and a fluorescent lamp using such a controller are also disclosed. | 10-06-2011 |
20120056552 | MULTI-MODE DIMMING CIRCUIT - The present disclosure discloses a multi-mode dimming circuit configurable to operate in a first dimming mode, a second dimming mode and a third dimming mode. The present disclosure also discloses separate dimming circuits for respectively realize the three dimming modes. In one embodiment the multi-mode dimming circuit may comprise a first input terminal, a second input terminal, a third input terminal, an output terminal, a resistive device, an oscillation circuit and a pulse width modulation (PWM) circuit. Users may flexibly configure the multi-mode dimming circuit to operate in one of the three different dimming modes by varying the external devices and/or signals coupled to each of the first, second and third input terminals. | 03-08-2012 |
20120206058 | ELECTRONIC DEVICE, CONTROL CIRCUIT, AND METHOD FOR CONTROLLING LIGHT EMITTING ELEMENT - An electronic device including a light emitting element. A capacitor is coupled to the light emitting element. A measurement circuit measures a change amount in charge of the capacitor. A control circuit controls a light emission amount of the light emitting element in accordance with a difference of the change amount in the charge and a reference value. | 08-16-2012 |
20120326619 | POWER MANAGEMENT CIRCUIT AND LIQUID CRYSTAL DISPLAY USING SAME - A power management circuit comprising a power-on signal input, an output terminal a control unit, a switching unit, and a discharge unit. The control unit configured to selectively turn on the switching unit to output a power-on signal to a display module and selectively turn off the switching unit to cut off an electrical connection between the power-on signal input and the output terminal. The discharge unit configured to discharge residual electrical charges in the display module when the switching unit is turned off. | 12-27-2012 |
20160073472 | Module for Lighting Means With Combined Secondary-Side Measurement Signal Detection - In one aspect, the invention provides a module for operating at least one lighting means, preferably at least one LED, said module having at least one electrically insulating barrier that separates a primary side, which can be supplied from a mains voltage, from a secondary side of the module, from which secondary side preferably the at least one LED can be supplied. On the secondary side are arranged a control circuit and a passive circuit which is connected to a single input of the control circuit and has at least two resistors, at least one of which is connected in series to a capacitor, the input being selectively connectable via a switch of the control circuit, and the control circuit being designed to detect at least two measurement signals at the input after switching of the switch depending on the degree of loading of the capacitor. | 03-10-2016 |
315244000 |
Inductance in the condenser circuit | 3 |
20080309249 | Gas Discharge Lamp Ignition - Ignition of a gas discharge lamp | 12-18-2008 |
20090033238 | IGNITION AND OPERATION OF ELECTRONIC HIGH INTENSITY DISCHARGE LAMPS - A method for igniting and operating a high intensity discharge (HID) lamp using an electronic ballast controlled by a ballast microcontroller. An ignition circuit including a parallel capacitive circuit is connected in parallel to the HID lamp. The ignition circuit being resonant at an ignition resonance frequency. An ignition voltage is provided to the HID lamp at the ignition resonance frequency, thereby initiating ignition of the HID lamp. Upon sensing the ignition, the HID lamp is powered at an operation frequency. Both the ignition resonance frequency and the operation frequency are in a high frequency range above fifty kilohertz. The ignition voltage preferably does not include a significant direct current offset The current flowing through the HID lamp is substantially continuous during the transition from providing ignition voltage during the ignition to powering the HID lamp at the operation frequency. | 02-05-2009 |
20120074861 | Apparatuses for Providing Power for Illumination of a Display Object - An exemplary power regulator apparatus provides power for illumination of a display object, such as a merchandise package or container, which has a light emitting apparatus comprising a secondary inductor and an illumination source. A support structure, such as a point of purchase display, typically contains or supports one or more power regulators and display objects. The power regulator comprises a controller and a primary inductor, and the controller is adapted to provide a voltage or current to the primary inductor to generate a primary inductor voltage. The controller may also comprise a plurality of switches and a memory adapted to store values for switching frequency or switch on-time durations or pulse widths. The illumination source emits visible light when the power regulator is in an on state and when the secondary inductor is within a predetermined distance of the primary inductor. | 03-29-2012 |
315237000 |
Discharge control discharge device load | 2 |
20080211420 | Short arc lamp driver and applications - A short arc lamp driving circuit includes a trigger boosting circuit, a flash current control circuit, and a closed loop exposure control and calibration circuits that, when combined, can produce short pulses of light with short time separation, quasi-continuous illumination light, and meanwhile, an extremely large dynamic range of delivered and/or calibrated light power or energy. | 09-04-2008 |
20140320036 | COMPULSORY TRIGGERED SPARK GAP SYSTEM WITH DOUBLE GAPS IN SERIES - The present utility model provides a compulsory triggered spark gap system with double gaps in series, said spark gap system includes two self-discharge main gaps in series G | 10-30-2014 |
315233000 |
Plural cathode and/or anode discharge device load | 1 |
20140117870 | DEUTERIUM LAMP POWER SUPPLY CIRCUIT - Provided is a deuterium lamp power supply circuit capable of preventing the application of a high switch-to-ground voltage to a switch when applying a voltage between a positive electrode and negative electrode to light a deuterium lamp. The power supply circuit includes a capacitor for applying a voltage between the positive electrode and the negative electrode, with one terminal of the capacitor being connected to the positive electrode; a power supply, installed between the capacitor and the negative electrode, for charging the capacitor; and a two-terminal switch connected in parallel to the power supply. The switch is placed at a location close to ground, and thus a high switch-to-ground voltage is not applied to the switch. | 05-01-2014 |
Entries |
Document | Title | Date |
20080252229 | High efficiency AC LED driver circuit - In an AC drive circuit for LEDs, a current limiting capacitor connects to an AC source, a first circuit portion, including a first rectifying diode and a first power capacitor, connects between the current limiting capacitor and the source and a second circuit portion, including a second rectifying diode in series with a second power capacitor, is in parallel with the first circuit portion. A first LED is in the first circuit portion in parallel with the first power capacitor, while a second LED in the second circuit portion is in parallel with the second power capacitor. During positive half cycles, the first rectifying diode charges the first power capacitor and drives the first LED. During negative half cycles, the second rectifying diode charges the second power capacitor and drives the second LED. | 10-16-2008 |
20120098453 | LIGHTING DEVICE AND ILLUMINATION APPARATUS USING SAME - A lighting device includes: a lighting unit which outputs a direct current; a smoothing unit having a capacitor which smoothes the direct current outputted from the lighting unit and supplies it; and a control unit for performing an intermittent control which alternately repeats a first time period in which the direct current is supplied to the smoothing unit and a second time period in which the direct current decreases to be smaller than that in the first time period. In the lighting device, a product of a frequency (Hz) and a capacitance (μF) of the capacitor is equal to or greater than 0.05 in which one cycle of the frequency corresponds to a sum of the first time period and the second time period. | 04-26-2012 |
20120313544 | Method And Apparatus For Efficiently Powering Digital Electronic Nodes On A Single Conductor Current Line - Light Emitting Diodes (LEDs) are increasingly used in illumination applications. To control multiple Light Emitting Diodes (LEDs), or any other controllable light source, this document introduces a single-wire multiple-LED power and control system. Specifically, individually controlled LED units are arranged in a series configuration that is driven by a control unit located at the head of the series. Each of the individually controlled LED units may comprise more than one LED that is also individually controllable. The head-end control unit provides both electrical power and control signals down a single wire to drive all of the LED units in the series in a manner that allows each LED unit to be controlled individually or in assigned groups. | 12-13-2012 |
20130221868 | Illuminable Wall Socket Plates and Systems and Methods Thereof - The invention relates generally to an illuminable wall socket plate for replacing existing wall sockets in one simple installation step. The illuminable wall socket plate obtains electric current from a socket to power a light by connecting metal tabs on the back side of the illuminable wall socket plate to socket terminals, and transferring electric current from the socket terminals to a light in the wall socket plate through conductive material, in accordance with the invention described herein. | 08-29-2013 |
20140049182 | DISPLAY DEVICE, ELECTRONIC DEVICE, DRIVING CIRCUIT, AND DRIVING METHOD THEREOF - A display device includes a pixel circuit that supplies current to a light emitting diode (LED) and a driver circuit. The pixel circuit includes a constant current circuit including a first transistor and a capacitor connected to a gate terminal of the first transistor, and a switch circuit including a second transistor. The driver circuit controls the pixel circuit such that the LED emits light by connecting the anode of the LED diode and the first power line under a non-light emission state of the LED, connecting the gate terminal of the first transistor and the anode after the anode is disconnected from the first power line, setting the gate terminal of the first transistor to a voltage corresponding to an amount of a supply current from the first power line, and after setting the gate terminal, switching a state of the LED into a light emission state. | 02-20-2014 |
20140049183 | Recovering Energy From An IrDA/Remote Control Transmitter Circuit - A portable electronic device with an IrDA transmitter LED is used to transmit both IrDA signals and remote control infrared signals. The device transmits remote control infrared signals with reduced power consumption. During a relatively longer remote control signal pulse, an inductor saturates and stores energy when a drive current flows from a power supply, through the inductor and then through the LED. An energy-transferring circuit transfers a portion of the energy stored in the inductor to the power supply. Energy is transferred when the drive current is cut and the voltage across the inductor surges, which causes an overflow current to flow through a diode in the energy-transferring circuit and to the power supply. The inductor is a planar coil of traces on a printed circuit board and therefore costs less to manufacture than does a toroidal coil of wires. | 02-20-2014 |
20140176002 | STATE CYCLING APPARATUS AND METHOD, AND CONTROL CIRCUIT FOR A LAMP - A state cycling apparatus uses a capacitor instead of complicated and expensive microcontroller to fulfill a state cycling function of a system. The state cycling apparatus includes an internal circuit in the system connected to the capacitor. In a first embodiment, the internal circuit reads the voltage level on the capacitor at power on to determine a current state for the system, and writes the voltage level corresponding to a next state of the system to the capacitor. In a second embodiment, the system reads the state data stored in the internal circuit to determine a current state for the system at power on, the capacitor is charged during the system is under power on, and the capacitor provides power for the internal circuit to store a state data after the system is powered off. | 06-26-2014 |
20140197755 | AN ACOUSTIC CEILING FOR A CAPACITIVE POWER TRANSFER SYSTEM - An acoustic ceiling tile ( | 07-17-2014 |
20140368123 | LIGHT-EMITTING METAL-OXIDE-SEMICONDUCTOR DEVICES AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS - Various embodiments of solid state transducer (“SST”) devices are disclosed. In several embodiments, a light emitter device includes a metal-oxide-semiconductor (MOS) capacitor, an active region operably coupled to the MOS capacitor, and a bulk semiconductor material operably coupled to the active region. The active region can include at least one quantum well configured to store first charge carriers under a first bias. The bulk semiconductor material is arranged to provide second charge carriers to the active region under the second bias such that the active region emits UV light. | 12-18-2014 |