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| Number | Title | Issue Date |
| 7364606 | Exhaust emission control device Provided are a hollow inner electrode constituted by an electrically conductive filter capable of capturing particulates, a cylindrical outer electrode circumferentially surrounding the electrode, a housing incorporated in a flow passage of exhaust and accommodating... | 04/29/2008 |
| 7283378 | High efficiency DC link inductor An improved inductor for a DC link that has an auxiliary winding for inducing an opposing magnetic field in a magnetically permeable core with an auxiliary DC current that opposes a magnetic field that a primary winding for the inductor induces along a magnetic path... | 10/16/2007 |
| 7212012 | Method of and system for regulating output voltage A method of and system for regulating voltage supplied by a local power supply to a remote load includes sensing a low frequency portion of the output voltage at the remote load, locally sensing a high frequency portion of the output voltage produced by the local po... | 05/01/2007 |
| 7184287 | Rectifier clamping circuit with reverse energy recovery An energy-feedback clamping circuit of a power converter is proposed. The converter includes a transformer coupled to a full-wave rectifier circuit. The clamping circuit includes: two clamping diodes having two anodes coupled to each other at a common-anode terminal... | 02/27/2007 |
| 7038406 | Bi-directional field control for proportional control based generator/alternator voltage regulator An H-bridge switching topology for bi-directional field excitation to null the effects of a rotor's permanent magnets uses both a low-side and a high-side field excitation driver to control the rotor's average field current. A standard proportional control signal fo... | 05/02/2006 |
| 7019996 | Power converter employing a planar transformer A power converter may employ a planar transformer to minimize winding conduction loss, and the switching devices of the power converter may be aligned in lines parallel to an edge of the planar transformer to minimize the termination leakage inductance. The windings... | 03/28/2006 |
| 6982887 | DC-DC converter with coupled-inductors current-doubler A coupled-inductor current-doubler topology for a power converter has first and second rectifiers and first and second coupled inductors. Each coupled inductor has a main inductor inductively coupled with a secondary inductor. The secondary inductor of the first cou... | 01/03/2006 |
| 6961254 | Insulating switching DC/DC converter In a DC/DC converter using an insulating transformer Tr having a center tap on the secondary side, an input choke coil L1 and an output choke coil L3 are integrated with the insulating transformer Tr, a primary coil (number of turns: 2N) and a secondar... | 11/01/2005 |
| 6912143 | Synchronous rectifier with burst mode control The present invention proposes a synchronous rectifier with burst mode control. A synchronous rectifier includes a transformer having a primary winding electrically connected to a power source, a secondary winding, a first auxiliary winding, and a second auxiliary w... | 06/28/2005 |
| 6661684 | AC-to-DC converter A voltage at a capacitor included in a peak detector is equal to a peak output voltage of a full-wave rectifier. A comparator included in a monitor circuit compares an output voltage of the peak detector with a voltage appearing at the capacitor. The comp... | 12/09/2003 |
| 6646859 | Power supply arrangement A power supply arrangement, especially in connection with a conductor (5) of a medium-voltage overhead line, which arrangement comprises a power supply (2) and a first and second element (3, 4) made of an electrically conductive material, which are connec... | 11/11/2003 |
| 6496391 | Power supply unit utilizing a current transformer A power supply unit for use in a measuring instrument at a plant. An output from a current transformer mounted on a power supply line is controlled so that the range of a primary current producing a stable output is increased. The invention includes a cur... | 12/17/2002 |
| 6480404 | Device for producing electricity from a three-phase network, in particular for a road vehicle A device for producing electricity, the device comprising a three-phase alternator comprising three windings, a rectifier for converting the AC delivered by the alternator into rectified current, and a voltage-raising chopper using the self-inductance of ... | 11/12/2002 |
| 6414864 | Circuit for reducing standby power of electric apparatus The present invention relates to a circuit for reducing standby power by converting low power outputted from an AC power supply into DC power. The standby power redundancy circuit of the invention reduces standby power by receiving AC power through a reac... | 07/02/2002 |
| 6243278 | Drive circuit for synchronous rectifier and method of operating the same A drive circuit for driving a rectifier switch, a method of driving the rectifier switch and a power converter employing the drive circuit or the method. In one embodiment, the drive circuit includes (1) a blocking diode couplable to a bias energy source ... | 06/05/2001 |
| 6191960 | Active clamp for isolated power converter and method of operating thereof A secondary active clamp for a power converter, a method of actively clamping energy of the power converter and a power converter employing the clamp or the method. The power converter has a primary switching circuit coupled to a primary winding of an iso... | 02/20/2001 |
| 6178098 | Phase-shifted post-regulator, method of operation thereof and power converter employing the same For use in a power converter having an inverter coupled to an output rectifier, a post-regulator, a method of operating the same and a power converter incorporating the post-regulator or the method. In one embodiment: (1) a switching circuit, having at le... | 01/23/2001 |
| 6072708 | Phase controlled switching regulator power supply A switching regulator device for charging applications includes a transformer (18) which receives an AC input signal from an AC source (12) which is then rectified with a bridge rectifier (24). A regulation control circuit (26) is provided for regulating ... | 06/06/2000 |
| 6044000 | Switched-mode power supply having signal evaluation unit connected to a charging inductor A switched-mode power supply for supplying a DC-fed load (LD) by a steppep, stabilized DC voltage (uzw), which is formed from an AC mains voltage (U) by means of a rectifier circuit (D1 to D4), a charging inductor (L1), a switch (V1), which is controlled... | 03/28/2000 |
| 5999418 | Control device for an electromagnet coil Device designed to control a coil forming part of a solenoid valve, for example in a contactor type device. A switching power supply 14 includes a winding S1 powering a control circuit 15 and another winding S2 placed with a switch T2 at the coil terminal... | 12/07/1999 |
| 5705923 | Variable inductance current limiting reactor control system for electrostatic precipitator A method and apparatus for varying an electrically variable current limiting reactor (VICLR) ( 16) are provided in cooperation with an electrostatic precipitator automatic voltage control system. The inductance of VICLR (16) is varied by altering the DC c... | 01/06/1998 |
| 5657214 | Stepped waveform PWM inverter An inverter for converting DC power into AC power includes first and second subinverters having a plurality of controllable switches and three-phase outputs coupled to a summing transformer having wye and delta connected sets of primary windings and a set... | 08/12/1997 |
| 5545971 | AC voltage regulator An AC voltage regulator to be used to regulate voltage fluctuations both above and below a desired voltage output, the regulator including a regulator input connected with an AC power source, a regulator output connected with a load, and a single regulato... | 08/13/1996 |
| 5515262 | Variable inductance current limiting reactor An electrically variable current limiting reactor which is usable in association with a power supply for an electrostatic precipitator is disclosed herein. The current limiting reactor is capable of having the inductance value thereof varied responsive to... | 05/07/1996 |
| 5202894 | Electric supply device for one or more metal vapor lasers using an electric power charging circuit with a variable inductor to provide a variable charging gradient Electric supply device for at least one metal vapor laser includes a convertor for converting an a.c. voltage into a d.c. voltage of fixed amplitude. Means are provided for supplying a pulse voltage with a maximum amplitude that can be regulated. An elect... | 04/13/1993 |
| 5119284 | Efficient power supply post regulation High efficiency, post regulation of auxiliary outputs in multiple output-power supplied is provided by connecting a regulating switching device in parallel with a filter inductor connected in the current path from the rectifiers to the output terminal. Fo... | 06/02/1992 |
| 5119283 | High power factor, voltage-doubler rectifier A voltage-doubler rectifier includes an ac fullbridge diode rectifier and a dc-to-dc converter having two output boost circuits. One of the output boost circuits is coupled between the rectifier and a dc link, and the other output boost circuit is coupled... | 06/02/1992 |
| 5075839 | Inductor shunt, output voltage regulation system for a power supply High efficiency, post regulation of auxiliary outputs in multiple output-power supplies is provided by connecting a regulating switching device in parallel with a filter inductor connected in the current path from the rectifiers to the output terminal. Fo... | 12/24/1991 |
| 4899271 | Power supply circuit A power supply circuit comprising a transformer and rectifier diodes, where the ends of the secondary winding are connected to uniform first electrodes of a pair of rectifier diodes (D1, D2) whose second electrodes are connected to one output terminal (-)... | 02/06/1990 |
| 4868732 | Pluggable power system having magnetic flux coupled power transformer and inductive filter components A regulated voltage electrical power system has a driving section and a driven section. The driving section includes a power transformer primary structure and a ripple current carrying, driving winding of a filter system for the smoothed outputs circuits ... | 09/19/1989 |
| 4802080 | Power transfer circuit including a sympathetic resonator A power transfer circuit includes first and second windings (L1, L2) sharing a common magnetic core (101). Each winding has associated with it a parallel capacitor to thus form a pair of "tank" circuits. The first winding (L1) is connected at one end to a... | 01/31/1989 |
| 4739462 | Power supply with noise immune current sensing A power supply (20) incorporates a switching regulator circuit and a flyback transformer (26) having diodes (42) for unidirectional current flow from an output circuit of the transformer to a load (24). Substantially noise-free sensing of currents in both... | 04/19/1988 |
| 4667279 | Transformer coupled pard bucker for DC power supplies A noise reduction circuit for a DC power supply in which the input of a high pass filter is coupled to the output circuit of the supply so as to receive a noise signal, the output of the high pass filter is coupled to the primary winding of a transformer ... | 05/19/1987 |
| 4631471 | Inductor apparatus for application of ferroresonant regulators An inductor structure is combined with a ferroresonant regulator as a filter inductor in one instance, and as a regulating inductor in another. In one example, a ferroresonant voltage regulator includes a pair of shunt filters at its output to reduce the ... | 12/23/1986 |
| 4623834 | Dual programmable response time constants for electronic tap switching line regulators A dual programmable control time constant circuit is provided for a tap switching line voltage regulator of the type which selectively switches in a sequential adjacent one of a predetermined number of taps on a winding of a transformer. The dual programm... | 11/18/1986 |
| 4581690 | Switched-mode power supply with output post-regulator A switched-mode power supply provides a plurality of directly regulated DC output voltages. The power supply includes a first inverter-coupled transformer for providing first and second DC output voltages, with a feedback loop provided from a first output... | 04/08/1986 |
| 4553199 | High frequency power supply device A high frequency power supply device has an inverter circuit and an output circuit connected thereto. The inverter circuit includes a diode and a capacitor being connected in parallel to an output side of a switching transistor. A drive input voltage of t... | 11/12/1985 |
| 4532582 | Voltage regulator system using magnetic controllers A voltage regulator system for receiving relatively high frequency electrical energy from a source and providing a regulated relatively low frequency electrical energy output wherein a passive device sensing means comprising only electrically passive elem... | 07/30/1985 |
| 4517633 | Switched mode power supply with a plurality of regulated secondary outlets The voltage stabilization of the secondary outputs of switched mode power supplies is effected with high efficiency by means of a regulation circuit where the current feeding the storage capacitor (26) is flowing through the primary coil (32) of a transfo... | 05/14/1985 |
| 4502001 | Current balancing for battery strings A battery plant is described which features magnetic circuit means for balancing the electrical current flow through a pluraliircuitbattery strings which are connected electrically in parallel. The magnetic circuit means is associated with the battery str... | 02/26/1985 |
