Abstract: An electric current balancing device includes an inverting circuit having a driving unit and one or more transformers coupled together for outputting an electric current to a load device, a detecting circuit coupled to the inverting circuit for receiving and detecting an electric current of the load device and for stabilizing and sending a stabilized and calibrated electric current to the inverting circuit, and a balancing transformer device having a primary side coupled to the inverting circuit for receiving the calibrated electric current from the inverting circuit, and a secondary side coupled to the load device for comparing an electric current of the load device with the calibrated electric current from the inverting circuit and for controlling the load device.

Abstract: A multi-chamber plasma process system includes a plurality of process chambers, each of which has an inductively coupled plasma generator. The inductively coupled plasma generator is electrically connected to a main power supply through a first impedance matcher. The first impedance matcher has at least one variable inductor. Ignition electrodes of the inductively coupled plasma generators are connected in parallel with an ignition power supply configured as a variable transformer. The variable inductor of the first impedance matcher and the variable transformer of the ignition power supply are controlled by a controller. Each process chamber has a plasma density regulator. Power supply systems, including an ignition power source, a radio frequency (RF) power source, an impedance matcher, etc. can be effectively integrated. As a result, it is possible to decrease the area of facilities and the cost of the system, and to individually control the plasma density of each process chamber.

Abstract: An active matrix organic electroluminescence display device and a method for manufacturing the same are disclosed. The active matrix organic electroluminescence display device includes a scan line in one direction, a data line substantially perpendicular to the scan line, a power line substantially parallel to the data line a distance from the data line, an electroluminescence device emitting light in a pixel region among the scan line, the data line and the power line, a switching transistor for switching a signal of the data line according to a signal of the scan line, and a driving transistor for applying a power supply of the power line to the electroluminescence device according to a signal applied through the switching transistor, the switching transistor or the driving transistor formed by a sequential lateral solidification (SLS) method.

Abstract: An inverter circuit for discharge lamps for multi-lamp lighting in which the value of a negative resistance characteristic of a fluorescent lamp is controlled, and an excessively set reactance is eliminated by causing a shunt transformer to have a reactance exceeding the negative resistance characteristic. Two coils connected to a secondary winding of a step-up transformer of the inverter circuit are arranged and magnetically coupled to each other to form a shunt transformer for shunting current such that magnetic fluxes generated thereby cancel each other out. Discharge lamps are connected to the coils, respectively, with currents flowing therethrough being balanced. Each discharge lamp is lighted because a reactance of an inductance related to the balancing operation which is in an operating frequency of the inverter circuit, exceeds a negative resistance of discharge lamps.

Abstract: A method and electronic circuit operate a quartz auxiliary lamp lighting lamp and circuit to light a quartz auxiliary lamp at 120 Vac and 50-60 Hz current connected to an electronic HID ballast operating at a frequency of 100 Hz to over 400 kHz and voltages of from 120 Vac, as provided by a multitap transformer and related circuitry.

Abstract: Multifrequency reflecting antenna (AR), for example for a telecommunication satellite that comprises a reflector (R) with a front face (FA) for reflecting beams of electromagnetic waves belonging to at least two different frequency bands. The front face (FA) of the reflector (R) comprises a structure (ST) defining a three-dimensional pattern with symmetry of revolution, chosen so as to shape the beams such that they have approximately identical radiofrequency characteristics.

Abstract: An antenna structure having a ground plane, a feed line and at least one resonator element that is embedded in a dielectric substrate and which is meandering in shape such that it includes at least two adjacent resonator segments. As a result, the resonator element resonates in two separate frequency bands. A second resonator element is provided, the second resonator element being dimensioned to resonate in a frequency band below a third operating frequency band, the feed line and ground plane being arranged to cause a resonance in a frequency band located above the third operating frequency band. During use, the combined effect of the resonance of the second resonator element and of the feed line and ground plane is to cause the antenna structure to resonate in the third operating frequency band.

Abstract: A hand-held fluorescent lamp assembly powered by typical line supply of 120 VAC, 60 Hz via an attached power cord and employing multiple commonly available fluorescent lamps. The assembly includes switches to independently control the multiple fluorescent lamps. The assembly includes lightweight solid state power regulation components. The power regulation circuit employs a self-oscillating circuit that is approximately matched in frequency of oscillation to the natural frequency of the fluorescent lamp load to automatically ignite the fluorescent lamps. The power regulation circuit includes circuit elements to automatically protect the ballast circuit and lamps from overdrawing in the run state and from abnormal load conditions.

Abstract: A stage lighting lamp unit includes a processor for receiving control data from a remote console. Beam orientation data for the lamp unit is passed to the lamp in the form of the x, y and z co-ordinates of a point in space through which the beam is to pass. The processor divides the required lamp travel into a number of stages dependent on execution duration data sent with the position data, and calculates, for each stage, a new value for pan and tilt angles for the lamp. These values are passed to pan and tilt controlling co-processors which control servo-motors for pan and tilt operation. The lamp unit also incorporates a rotatable shutter for interrupting the lamp beam when required. The shutters of all the lamps in a system can be instructed from the remote console to open and close in synchronism, thereby providing a stroboscopic effect.

Abstract: A backlight assembly comprises a plurality of linear light sources arranged in parallel behind a display screen. The plurality of linear light sources is divided into a first group and a second group. The linear light sources belonging to the first group are oriented in a first direction. The linear light sources belonging to the second group are oriented in a second direction opposite to the first direction. The backlight assembly comprises a first inverter substrate for driving the linear light sources belonging to the first group, and a second inverter substrate for driving the linear light sources belonging to the second group. The first and second substrates are arranged on one side of the linear light sources and the opposite side thereof, respectively.

Abstract: A method and apparatus used to step and correct the position of raster lines in a sinusoidal or zig-zag deflection system. By combining the magnetic flux generated with a rotation “twister” coil and a vertical deflection coil, scan lines can be uniformly spaced and separated nearly to their ends. Accordingly, the magnetic flux generated with the twister coil is adjusted going in the left to right direction then reversed in polarity and readjusted while returning from right to left. It is this controlled twister flux that combines with the linear vertical deflection flux to straighten and then step each scan line to produce an aligned raster.

Abstract: A display apparatus includes a light-emitting device, a first scan line for transferring a first signal to select the light-emitting device, a data line for transferring a data current signal to drive the light-emitting device, a first transistor having a gate coupled to the first scan line for selecting the light-emitting device according to the first signal, and a current mirror electrically connected to the light-emitting device for transferring a driving current signal to drive the light-emitting device. The current mirror includes a second transistor having a gate coupled to the data line and one of the source and the drain of the first transistor for receiving the data current signal. In addition, the current mirror further includes a third transistor having a gate coupled to the other of the source and the drain of the first transistor for transferring the driving current signal.

Abstract: Apparatus, system, and method are described for a complementary metal oxide semiconductor (CMOS) integrated circuit device having a first metal layer that includes a radiating element and a second metal layer that includes a first conductor coupled to the radiating element. The first conductor and the radiating element are mutually coupled to form an antenna to wirelessly communicate a signal.

Abstract: For an ion accelerator system having a special magnetic field structure with an alternating predominantly longitudinal and crosswise progression of the magnetic field, a geometry of the ionization chamber having a non-cylindrical shape of the chamber wall that is adapted to the progression of the magnetic field is proposed.

Abstract: An apparatus includes a vacuum chamber, an electrical transformer that surrounds the vacuum chamber to induce an electromagnetic field within the vacuum chamber, and an ignition circuit. The electrical transformer induces an electromagnetic field within the vacuum chamber. The transformer includes a primary winding and a plasma loop coupled to the vacuum chamber to perform as a secondary winding. The ignition circuit is coupled to an ignition core section of the vacuum chamber to ignite the vacuum chamber.

Abstract: A dual band antenna includes a metal strip and a feeding leg. The metal strip formed on a substrate further comprises a first band portion and a second band portion, in which a tail of the first band portion is connected to the second band portion. The feeding leg extended from a head of the first band portion is led to connect with a signal processing circuit. The metal strip can be tuned to second frequency band signals, in which the first band portion is purposely tuned to first frequency band signals. Also, the second band portion has a function of adjusting frequencies of the second frequency band.

Abstract: The invention describes a multiple lamp balance transformer and a drive circuit. The multiple lamp balance transformer has two magnetic cores with a closed magnetic flux path and two coils wound around the closed magnetic flux path. The two coils have the same number of windings. The impedance property of the coil and Lenz's Law are used to balance the operating current of the lamps connected to the coils. The drive circuit has a multiple lamp balance transformer connected to several lamps, and a boost transformer uses a controller to supply the current and voltage to the lamps. A current detect/protect circuit connected to the coils and the controller detects the current passing through the coils and converts the operating current of the lamp into a voltage to be sent to the controller, so that the controller controls and provides sufficient power to the lamps.

Abstract: An electronic ballast includes a microcontroller with software to provide an adaptive lamp preheat and ignition operation. The microcontroller commands a test frequency from the inverter and detects the frequency response of the resonant output circuit by measuring the voltage across the resonant capacitor. The measured voltages are compared to one or more reference voltages as the frequency is varied to select the optimal inverter frequency. An algorithm or look-up table is used to set the inverter frequencies for the lamp preheat and ignition phases.

Abstract: A fin-shaped antenna apparatus for vehicle ratio application is electrically connected to a wireless receiver circuit and receives a radio signal. The fin-shaped antenna apparatus includes a fin-shaped cover, an AM antenna, a signal amplifier circuit board, an FM resonance circuit on the signal amplifier circuit board and a metal base. The AM antenna is separated with the FM resonance circuit. The FM resonance circuit comprises a plurality of inductors to form a resonance circuit and is connected to a metal base for enhancing the signal reception thereof. Therefore the signal quality for vehicle ratio application is enhanced.

Abstract: The invention provides a tool to select reliable organic LED devices, where the risk for failure before the end of its lifetime is low. This tool comprises the steps of: i) subjecting the device to a high electric field over the electroluminescent layer. This leads to a division of the devices into two, clearly separated, populations, namely one population with a low leakage current (current through the electroluminescent layer in reverse voltage operation) and one population with a high leakage current. In this step, the first population is selected in accordance with a current criterion. ii) detecting instabilities in the leakage current, referred to as noise. It has been established that these instabilities arise in particular at reverse driving voltages between 1 and 10 Volts. These instabilities are a measure of the occurrence of early failures during operation. In this step, the devices are selected in accordance with a noise criterion.