Abstract: A resonant converter is provided which may be used for supplying power to the primary conductive path of an inductively coupled power transfer (ICPT) system. The converter includes a variable reactive element in the resonant circuit which may be controlled to vary the effective inductance or capacitance of the reactive element. The frequency of the converter is stabilised to a nominal value by sensing the frequency of the converter resonant circuit, comparing the sensed frequency with a nominal frequency and varying the effective inductance or capacitance of the variable reactive element to adjust the converter frequency toward the nominal frequency.

Abstract: A semiconductor device with an inductor device is small, thin, and low-cost. A laminated inductor is adhered fixedly onto a supporting conductive plate by Ag paste, and a semiconductor chip is adhered fixedly onto the laminated inductor via an insulating DAF tape. One end of the supporting conductive plate and a terminal electrode of the semiconductor chip are connected by a metal wire, and a plurality of terminal electrodes of the semiconductor chip and a plurality of external lead-out terminals are connected respectively by laterally extending metal wires. The entire structure is then sealed by a resin mold. By employing a laminated inductor and forming the metal wires to extend laterally in this manner, the thickness of the semiconductor device with an inductor can be reduced.

Abstract: An embodiment of a power-supply controller is operable to couple a first node of a first inductor to first and second reference nodes, the first inductor composing a first phase of a power supply and having a second node coupled to an output node of the power supply. The controller is also operable to couple a first node of a second inductor to third and fourth reference nodes, the second inductor composing a second phase of the power supply and having a second node. Furthermore, the controller is operable to uncouple the second node of the second inductor from the output node of the power supply. For example, where the first and second inductors are magnetically coupled, such a controller allows the power supply to operate as an uncoupled-inductor (UI) power supply in one mode, and as a coupled-inductor (CI) power supply in another mode.

Abstract: A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a current through the one phase to decay. For example, such a method allows energy stored in the uncoupled phase to be recaptured to the output transient response of a power supply.

Abstract: A switching circuit for supplying current to a load has a switching element, an inductive element coupled to the switching element, and a load current extraction circuit responsive to current in the inductive element for producing a load current signal as a simulated current approximating current in the load.

Abstract: A power supply system for an ion implantation system. In one particular exemplary embodiment, the system may be realized as a power supply system that includes a low frequency power inverter, a stack driver and a high voltage power generation unit that receives source power from the power inverter. The high voltage generation unit may include a high voltage transformer for providing an output power that is multiplied to a desired output level and delivered to an input terminal of an ion beam accelerator. The power supply system may also include a dielectric enclosure that encases at least a portion of the high voltage power generation unit, thereby preventing variation in the break down strength of the internal components.

Abstract: An electrical generator that uses a high frequency oscillator in a tuned circuit, set to resonate with the transmitter coil of a full-length high frequency transformer unit, to generate electromagnetic energy, to transform this energy to electrical energy and to collect this energy.

Abstract: A mode-switching transformer, combined with a differential low-pass filter, including a first planar winding in a first conductive level having an external end terminal defining a common-mode input/output terminal; a second planar winding electrically in series with the first winding and formed in a second conductive winding; at least one capacitor connecting an external end terminal of the second winding to ground; a third winding formed in the second conductive level and having an external end terminal defining a first differential mode access; and a fourth winding, electrically in series with the third winding and formed in the first conductive level, an external end terminal of the fourth winding defining a second differential-mode access terminal and the central ends of all windings being interconnected to ground.

Abstract: A resistance compensation circuit and a method thereof for tuning frequency, includes several resistors serially connected to one another, several transistors, each of which connects across one of the corresponding resistances, and a register electrically connected to the gates of the transistors. A control signal controls the switching of the transistors either to compensate the process variation of the resistance through the register or to tune the working frequency of the Integrated circuit.

Abstract: A process and system are disclosed for supplying electrical energy to a device located in a room housing an imaging system (such as an MRI system, for example), wherein the room is shielded from external electromagnetic fields. Certain embodiments of the present invention provide systems and processes for emitting electromagnetic radiation in the wavelength range of the light spectrum from at least one light emission device. Embodiments of the present invention further provide a process and system for transforming the electromagnetic radiation into electrical energy using at least one transducer device located in the room, and supplying the electrical energy to the device so as to minimize interfering electromagnetic fields within the room.

Abstract: An RF impedance-matching transformer for matching the output impedance of an RF amplifier to the discharge of a gas-discharge laser includes upper and lower dielectric plates arranged face-to-face and bonded together. A primary U-shaped strip winding is embedded in the bonded surface of one of the dielectric plates. A secondary strip-winding is formed on an exposed surface of the upper dielectric plates. A ground-plane electrode formed on an exposed surface of the lower dielectric plate. An electrical connector connects one end of the secondary strip-winding to the ground-plane electrode via a via-hole extending through the dielectric plates. The other end of the secondary strip-winding can be connected to the laser.

Abstract: A method for controlling power supply through multiple modulation modes aims to control an inverter of a selective characteristic through a cycle control signal of varying modulation modes to ensure that the inverter and the load on the rear end function in a reliable characteristic range and prevent the load from aging too quickly. The method includes generating a cycle control signal which includes ON-Time and OFF-Time, and adding a regulation energy of varying amplitudes or frequencies in the OFF-Time to provide varying modulation modes by mixing duty cycle, frequency modulation and amplitude modulation. The power supply can be controlled with a high reliability and a wide dynamic range.

Abstract: A method for compensation and symmetrization of a three-phase system with a single-phase load is provided. At least one variable inductor for connection to the three-phase system is employed in the method. The inductor's inductance is adjusted to obtain a resistive single-phase load and/or a three-phase load which draws balanced line currents. A device and a system for compensation and symmetrization by means of variable inductors is also provided.

Abstract: A transformer assembly for a microwave oven having a magnetron, including a transformer to apply voltage to the magnetron of the microwave oven; a container receiving the transformer therein and having a base plate coupled to the microwave oven and a cover body coupled to the base plate; and a cooling material contained in the container to cool the transformer.

Abstract: A power supply system is provided, having: a primary side coil; a power transmission apparatus having a primary side circuit for feeding a pulse voltage resulted from switching a DC voltage which is obtained by rectifying and smoothing a commercial power supply to the primary side coil; a secondary side coil magnetically coupled to the primary side coil; and power reception equipment having a secondary side circuit for rectifying and smoothing voltage induced across the secondary side coil, wherein there is provided a power adjusting section for adjusting a level of power to be transmitted according to power required by the power reception equipment.

Abstract: A switching power supply unit is provided, in which core loss in a transformer or a level of heating due to AC resistance of the transformer can be reduced. A switching power supply unit has a transformer, an inverter circuit and a rectifier circuit. In a secondary side of the transformer, secondary wirings are connected to each other. In a primary side of the transformer, primary wirings are connected in series to each other, and connected to the inverter circuit to allow them to be driven in a time-divisional manner in phases opposite to each other in response to operation of the inverter circuit. The rectifier circuit has diodes connected to the secondary wirings to allow the secondary wirings to be driven in a time-divisional manner in phases opposite to each other in response to operation of the inverter circuit.

Abstract: A magnetic element and a power supply which can output a plurality of different output pulse signal voltages or different output AC voltages while preventing an increase in the number of parts or an area occupied by parts are provided. The magnetic element includes a magnetic core which includes an inner leg portion, a first outer leg portion and a second outer leg portion (hereinafter referred to as the outer leg portions) which share the inner leg portion, and each of which forms a loop magnetic path together with the inner leg portion. An inner leg coil is wound around the inner leg portion, and an outer leg coil is wound around the outer leg portions. The outer leg coil is wound around the outer leg portions so that magnetic fluxes generated in the outer leg portions by a current flowing through the outer leg coil cancel each other out in the inner leg portion.

Abstract: A buck converter has a driver circuit with a drive transformer that provides complementary voltages to the buck converter switches. The drive transformer may have two secondary windings, with one winding for each converter switch. As one converter switch experiences a rising gate voltage, the other converter switch experiences a falling gate voltage. Since both converter switches are controlled by the same driver switches, the converter switch dead time is very small. Preferably, at least one converter switch has a voltage shift circuit connected to the gate electrode. Adjustment of the voltage shift magnitude will advance or delay the turn on and turn off times of the switch. Hence, the converter switch dead time can be precisely adjusted by varying the voltage shift magnitude. Preferably, the converter switch dead time is less than 1 or 2 nanoseconds.

Abstract: A system for providing power to a computer peripheral device during the normal operation of the device is disclosed. A base is provided that includes a winding of a coil. The winding is driven to make a constantly changing magnetic field. The peripheral device also includes a winding of a coil. When the winding of the coil is placed in the changing magnetic field, a voltage is induced in the winding. That voltage can be converted into power for use by the peripheral device. In one embodiment the peripheral device is a mouse. The peripheral device may include a rechargeable battery, and the induced power could be used by a circuit to recharge the battery.

Abstract: A system for electrically contacting a semiconductor wafer during implanting of the wafer includes one or more pairs of closely spaced contacts located adjacent the semiconductor wafer and a driving circuit connected to the contacts to provide a discharge from one contact to the semiconductor wafer and from the semiconductor wafer to the other contact of each pair of contacts. The contacts can be spaced apart from the wafer and the tips of the contacts closest to the wafer may have sharp points to aid in the establishment of corona at lower drive voltages. Alternately, the contacts may be rounded and may contact the wafer. The driving circuit may be adapted from a pulsed discharge circuit, such as a Kettering ignition circuit, a capacitance discharge ignition circuit, or a blocking oscillator circuit. Alternately, the driving circuit may be adapted from a continuous discharge circuit, such as a Tesla coil circuit.

Abstract: Circuits for shortening a rise time of a load include a main pulse transformer coupled to a load, an auxiliary pulse transformer coupled to the load, and a diode connected between the auxiliary pulse transformer and the main pulse transformer. The main pulse transformer delivers a main pulse to the load. The auxiliary pulse transformer delivers an auxiliary pulse to charge the capacitance associated with the load. The diode isolates the auxiliary pulse transformer from the main pulse. By charging the capacitance in this manner, a rise time of the main pulse is shortened and ringing of the main pulse on the load is reduced.

Abstract: A power supply apparatus for a traveling-wave tube disclosed herein eliminates the need for isolation through a vacuum relay or the like, and is therefore fabricated in small size and at low cost. An oscillator circuit generates an oscillating signal at a frequency optionally selected from a plurality of frequencies. An inverter is applied with the oscillating signal from the oscillator circuit to generate an AC voltage signal at the frequency of the oscillating signal. A transformer transforms the AC voltage signal generated by the inverter disposed on the primary side and supplies the resulting signal to the secondary side. A rectifier circuit, which is disposed on the secondary side, rectifies the AC voltage signal transformed by the transformer for application to the traveling-wave tube. A frequency detector circuit detects the frequency of the AC voltage signal applied from the transformer to the rectifier circuit to generate a device control signal in accordance with the frequency.

Abstract: The power supply interface (10) includes a rectification stage (18), having an autotransformer (40) connected to a power supply network (12), and a signal conditioning stage (20) having an output (28) supplying power to a load (14). The conditioning stage (20) includes a power module (22), for conditioning the power supply signal, and a control module (24) designed to control the power module (22). An autotransformer (40) includes at least one additional winding (62A, 62B, 62C; 64A, 64B, 64C) connected to the control module (24) to supply it with electrical power, the or each additional winding being magnetically coupled to at least one primary winding (44A, 44B, 44C) of the autotransformer (40). The power is supplied to a motor in an airplane.

Abstract: The present invention provides a power injector apparatus that can supply two power sources, one from the Ethernet and the other from AC power. The Internet device can select the AC power as a power source when the Internet device requires power exceeding the Hub or the Switch can supply. Moreover, the Internet device can select the Ethernet as the power source when the supplied power is sufficient.

Abstract: A multi-axes industrial processing machine with a multi-axes electrical drive system and at least two axle drives that have each an axle module and a built-in motor is disclosed. The machine further includes an impedance that is transformer-coupled with a supply module through an annular core. Either the phase lines on the AC side of the supply module or the output lines of the DC side of the supply module as well as an additional winding are wound on the annular core. The impedance is connected in parallel to the additional winding.

Abstract: A method for detecting a null current condition in a PWM driven inductor connected between a voltage source node and a second circuit node of a line for outputting current to a load includes generating a derivative signal by time differentiating a voltage on the second node. The method further includes monitoring an instant when the derivative signal becomes negative, and signaling verification of the null current condition each time the derivative signal becomes negative.

Abstract: A step-up converter based on an integrated transformer, comprising a self-resonating oscillator circuit that has inductive elements constituted by primary and secondary windings of at least one first transformer, the self-resonating oscillator circuit being powered by an external supply voltage.

Abstract: The present invention relates to a power controlling system for a display. When Display Power Management signals, i.e., DPMF/DPMS signals, output from Micom, the controller, are all “Low” and “Low”, a main power switch is turned off Therefore, power is not supplied to a secondary side of a main transformer and only the Micom is provided with power. As a result, the display enters to a power off mode, wherein power consumption is less than 1 Watt.

Abstract: Embodiments of the present invention relate to independently switched inductors in a voltage converter. Each voltage transforming inductor of a voltage converter may be designated a switch or bridge at each opposing terminal. The function of these switches is to periodically reverse the polarity of voltage across the inductors. By configuring independently switched inductors in series, the frustration of voltage tolerance limitations of the switches is mitigated.

Abstract: A capacitive voltage transformers for distribution of the power from 10 kv high potential line, includes a insulating column with a high potential terminal, a ground terminal and capacitors C1 and C2 in series connection. The column is filled with oilless dry filler. The capacitors C1 and C2 formed by a plurality of separated metallized film capacitors respectively in series or in parallel connection. At the tapping point between the capacitors there is a leading-out terminal of the secondary voltage which is connected to an induction transformer L in parallel. The transformer includes a frame with “C” shaped iron cores and windings wound around the cores. There is an over-voltage protector P connected in parallel between the tapping point and ground. A capacitive voltage divider is integrally combined with the transformer to provide a small volume, low cost device with a savings in materials.

Abstract: A system for electrically contacting a semiconductor wafer during implanting of the wafer includes one or more pairs of closely spaced contacts located adjacent the semiconductor wafer and a driving circuit connected to the contacts to provide a discharge from one contact to the semiconductor wafer and from the semiconductor wafer to the other contact of each pair of contacts. The contacts can be spaced apart from the wafer and the tips of the contacts closest to the wafer may have sharp points to aid in the establishment of corona at lower drive voltages. Alternately, the contacts may be rounded and may contact the wafer. The driving circuit may be adapted from a pulsed discharge circuit, such as a Kettering ignition circuit, a capacitance discharge ignition circuit, or a blocking oscillator circuit. Alternately, the driving circuit may be adapted from a continuous discharge circuit, such as a Tesla coil circuit.

Abstract: A method for operating an electrical apparatus includes mounting an instrument transformer proximate a load current carrying conductor, wherein the instrument transformer includes a current transformer for supplying an analog input signal proportional to a load current, the current transformer is coupled to a relay front-end module that includes a current-to-voltage converter circuit and is configured to couple to a remote protection module, converting the analog input signal to a digital input signal, transmitting the digital input signal to the remote protection module; and activating contacts to operate the electrical apparatus based on the digital input signals.

Abstract: A power converter is installed for each solar cell, and electric power having a low voltage and a relatively large electric current is input to the power converter, thereby reducing as much as possible the wiring work which greatly raises the cost of an electric power generator. For this purpose, a power converter which has a high operating efficiency and by which a low-cost electric power generator can be constructed when an unstable power source such as a solar cell is used is desired. As this power converter, a DC/DC converter is provided which supplies DC power supplied from the solar cell to a transformer by switching the DC power, thereby boosting the output voltage from the solar cell by a few tens of times to a few hundred times. The number of turns of the primary winding of the transformer is set to 2 or 3.

Abstract: A stabilizing DC current interface for an electrodeionization (EDI) water purifying module. Each EDI module comprises anionic/cationic membranes, a center pipe, nets/spacers in concentrate/dilute water chambers and an anode and cathode for coupling to the stabilizing DC current interface. Because a stabilized DC current is provided by the interface, the power to each EDI module is not influenced by water temperature, flow rate, water quality in the module, thereby providing a stabilized quality product water while saving energy. A plurality of EDI modules can be operated in electrical series using a DC current interface resulting in reduced DC power consumption.

Abstract: A piezoelectric ceramic transistor is formed from a single-layered or multi-stacked layers piezoelectric ceramic voltage transformer and a capacitor, the capacitor being series connected to an input terminal of the piezoelectric ceramic voltage transformer to prevent electric power and prevent loss due to feedback, thereby compensating and increasing vibrations of the piezoelectric ceramic voltage transformer. Alternatively, the above connection scheme is achieved by either serial connecting a capacitor between a power output of the transformer and a load terminal, or parallel connecting a first capacitor to a power input of the transformer while a second capacitor is series connected between a power output of the transformer and the load terminal to obtain an increased power and thereby increasing the load current.

Abstract: A power supply circuit for a cold-cathode fluorescent lamp (CCFL). The power supply circuit converts a DC voltage to a high AC voltage for driving the CCFL. The power supply circuit includes: a switch; a switch control circuit for controlling the switch; a transformer for stepping up the voltage; an energy-preserving unit coupled to the transformer and the DC voltage output circuit; a first diode coupled to the transformer, the energy-preserving unit, and the switch; and a decoupling capacitor coupled to the transformer for outputting the high AC voltage.

Abstract: The invention relates to an arrangement of two cascaded transformers, i.e. an impedance transformer (24) and a balance-unbalance transformer, also referred to as balun transformer (26). A relatively simple, inexpensive, small and efficient construction of this arrangement is achieved by mounting both transformers (24, 26) on a single core (50) of a magnetic material. The arrangement according to the invention can be used in CATV networks, more specifically in CATV modules and optical receivers for use in such CATV networks.

Abstract: An electronic device, in particular a control unit including an electromagnetic actuator, whose coil is at the same time part of a voltage transformer. The coil is connected through a switch to an operating voltage potential or to a reference potential. A capacitor is also provided. The coil, the capacitor and the switch constitute a voltage transformer.

Abstract: A regenerative load apparatus and a load test method are able to reduce a test cost required when a load test is effected on apparatus for supplying electric power to a load. The regenerative load apparatus includes a first load (22) for transmitting supplied electric power at a current conversion ratio approximately inverse relative to that of a tested apparatus (21) from an output side, a second load (23) for consuming supplied electric power and a power supply (24) for supplying electric power approximately equal to electric power consumed by the second load (23) to the tested apparatus (21), wherein electric power is diverged and supplied to the first load (22) and the second load (23) from the tested apparatus (21) and the electric power transmitted from the first load (22) is supplied to the tested apparatus (21) in addition to the electric power from the power supply 24.

Abstract: A method for regulating a signal level in a power supply for a microchannel plate in a radiation detector is provided. The method includes receiving an input signal at a signal multiplier. The signal multiplier has an output terminal and a return terminal. An output signal is produced at the output terminal. The output signal is provided to the microchannel plate. A regulation signal is provided from the output terminal to the return terminal. A signal level of the output signal is regulated with the regulation signal.

Abstract: A switching power-supply module includes a coil pattern of a transformer or an inductor disposed on a substrate. A portion of the coil pattern projects into an edge portion of the substrate. A plurality of terminals are arranged in the substrate edge portion so that they do not touch the coil pattern. The substrate edge portion is soaked in molten solder in the production procedure in order to fix the terminals onto the substrate with solder after components are solder-connected on the substrate. For this reason, the components were previously prohibited from being mounted in the substrate edge portion, and this region has been previously considered to be a dead space. However, in the present invention, since a portion of the coil pattern projects into the substrate edge portion, dead space is minimized, and the size of the substrate, that is, of the switching power supply module is greatly reduced.

Abstract: A fuel dispenser system is provided in a standard configuration based upon a single supply voltage requirement that is independent of the available local power supply sources. A supply voltage apparatus integrally coupled to the standard dispenser configuration employs a transformer to adapt the field supply voltage from the local power supply to the voltage level needed by the dispenser devices such as the power supplies.

Abstract: The present invention relates to a vacuum arc discharge power supply. The power supply may be a high frequency resonant AC supply or it may be rectified to give resonant DC. The power supply of the present invention may be used in x-ray production, vacuum arc deposition equipment, vacuum metal refining, ion implantation devices, or other applications that perform vacuum arc discharge.

Abstract: The invention relates to a frequency converter system having a filter, an input-side inductance, in particular a mains system input inductor, and a converter with an input converter and an inverter for operation of an electrical machine, having a tuned circuit which is formed by at least one input-side inductance and parasitic distributed capacitances in the frequency converter system with undesirable resonant oscillations during operation of the frequency converter system, with a damping device being provided for damping the tuned circuit.

Abstract: The invention relates to a frequency converter system having a filter, an input-side inductance, in particular a supply network-side (or input) inductor, and a converter having an input converter and an inverter for supplying an electrical machine. The frequency converter constitutes a tuned circuit formed by at least one input-side inductance and parasitic distributed capacitances in the frequency converter system, with undesirable resonant oscillations encountered during operation of the frequency converter system, with a damping device being provided for damping the tuned circuit.

Abstract: A transformer unit connects to an ac outlet and provides ac controlled by an opto-coupled triac to another ac outlet. The transformer unit includes a transformer and a third connector for connection to a control unit separate from the transformer unit. The third connector provides the control signal from the control unit, a low voltage supply for the control unit derived from the transformer, and the timing of the ac waveform, provided by a zero crossing signal or an ac or rectified ac signal which can constitute the low voltage supply. The control unit, electrically isolated from the ac supply, can produce the control signal under manual control or automatically to gradually change the conduction phase angle of the triac. The brightness of a lamp connected to the ac outlet is thereby controlled manually or automatically to provide a simulated dawn or dusk.

Abstract: In such a voltage equalizer circuit in which each of plural windings P1 to Pn electromagnetically coupled to each other, each of plural storage elements E1 to En series-connected to each other, and each of plural first switching elements S1 to Sn are connected to each other in a series connecting manner so as to constitute a plurality of closed circuits, this voltage equalizer apparatus is featured by that a reference voltage winding Pp electromagnetically coupled to the plurality of windings is provided; both a DC power supply Ep and a second switching element Sp are series-connected to the second winding; and all of the plural first switching elements and the second switching element are turned ON/OFF in a synchronous manner.

Abstract: A primary winding of a first insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an input terminal, and windings of a noise eliminating transformer are provided within balanced lines on the side of a secondary winding of the first insulating transformer. A primary winding of a second insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an output terminal, and balanced lines on the side of the secondary winding of the second insulating transformer is connected to the noise eliminating transformer. One end of each of the primary windings, which is grounded to the ground line, is connected to the middle print of the secondary winding of each insulating transformer.

Abstract: Non-contact signal transmission apparatus provides signal transmission between a main unit and an auxiliary unit via electromagnetic induction. A set of power cores having hollow sections are provided as a pair at corresponding positions of the main unit and the auxiliary unit. A wire is wound around each of the power cores as power coils for feeding power from the main unit to the auxiliary unit. At least one set of signal cores are provided as a pair at corresponding positions of the main unit and the auxiliary unit. A wire is wound around each of signal cores as signal coils transmitting signals between the main unit and the auxiliary unit. The signal coils are arranged in hollow sections of the power cores.

Abstract: A power generator and method of use for providing symmetrical power. In the present invention, the output winding of a generator is center-tapped at the point of mean voltage differential between each of its two output terminals. The center-tap is grounded such that one-half of the output potential appears across each half of the output winding. Full, symmetrical voltage is applied to the load when the output terminals are connected to the load and the load is grounded.