For Rectifying Patents (Class 363/61)
  • Patent number: 10767398
    Abstract: A vehicle door handle circuit coupled to a vehicle control unit includes a transmission antenna circuit, a control circuit and an actuation sensor via which the door handle circuit receives DC voltage for supplying the control circuit or AC voltage for controlling the antenna circuit. The antenna circuit includes a series oscillating circuit with an inductor and a capacitor. A series circuit including a first capacitor and a first rectifier is connected between two contacts and in parallel with the antenna circuit allows part of the AC voltage signal to be used for the voltage supply of the control circuit. A second rectifier connects one of the two contacts to the series circuit. A third rectifier is also provided in order to feed DC voltage to the vehicle control unit.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: September 8, 2020
    Assignee: Huf Huelsbeck & Fuerst GmbH & Co. KG
    Inventor: Berthold Sieg
  • Patent number: 10616986
    Abstract: An x-ray source can have a reduced voltage gradient and a consistent voltage gradient, thus allowing less insulation, reduced arcing failure, or both. The x-ray source can comprise a bipolar voltage multiplier and an x-ray tube. The bipolar voltage multiplier can include a negative voltage multiplier and a positive voltage multiplier. An axis extending from an input voltage of the negative voltage multiplier to a negative output bias voltage defines a negative axis. An axis extending from an input voltage of the positive voltage multiplier to a positive output bias voltage defines a positive axis. An angle A1 between the negative axis and the positive axis can be selected for optimal voltage gradient.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: April 7, 2020
    Assignee: Moxtek, Inc.
    Inventors: Eric Miller, Tyler Washburn, Roland Creed
  • Patent number: 10398011
    Abstract: An apparatus and method for actively managing the current provided to an X-ray filament is provided. A feedback measurement of the actual filament current supplied to an X-ray filament is provided into a current manager and feedback system. An error amplifier compares the feedback measurement to a filament reference command indicating the appropriate current amount to be supplied to the X-ray filament, and the output of the error amplifier runs a pulse width modulator to provide a signal to an inverter to supply a voltage to the X-ray filament transformer. When a comparator senses sufficient high voltage is supplied to the X-ray tube, a second error amplifier is allowed to add to the filament current command an amount sufficient to make the X-ray tube's emission current match the commanded emission current. Additional circuitry and electronic switches are provided to allow the apparatus to operate in a dual-filament system.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: August 27, 2019
    Assignee: KIMTRON, INC.
    Inventors: John Matilaine, Jeffrey M. Pagini
  • Patent number: 10148222
    Abstract: An inverter apparatus includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch, a fourth switch, a first inductor and a second inductor. The first capacitor, the second capacitor, the first switch, the third switch and the first inductor form and have functions of a half bridge inverter. The first capacitor, the second capacitor, the second switch, the fourth switch and the second inductor form and have functions of a half bridge inverter. Therefore, the present invention obtains two kinds of voltages.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: December 4, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Lei-Ming Lee, Chen-Wei Ku, Xin-Hung Lin
  • Patent number: 9741673
    Abstract: A packaged RF transistor device includes an RF transistor die including a plurality of RF transistor cells, an RF input lead coupled to the plurality of RF transistor cells, an RF output lead, and an output matching network coupled between the plurality of RF transistor cells and the RF output lead. The output matching network includes a plurality of capacitors having respective upper capacitor plates, wherein the upper capacitor plates of the capacitors are coupled to output terminals of respective ones of the RF transistor cells. The plurality of capacitors may be provided as a capacitor block that includes a common reference capacitor plate and a dielectric layer on the reference capacitor plate. The upper capacitor plates may be on the dielectric layer.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 22, 2017
    Assignee: Cree, Inc.
    Inventors: Ulf Hakan Andre, Simon Maurice Wood
  • Patent number: 9584011
    Abstract: According to one embodiment, an apparatus is for use with a remote circuit. The apparatus has a first input for receiving an input voltage, a second input for receiving a power supply voltage, and a third input for receiving an input clock having a high state corresponding to the power supply voltage and a low state corresponding to a return for the power supply voltage. The apparatus includes a first shift circuit coupled to the first input and the third input, and configured to output a first output clock, the first output clock having a low state corresponding to the input voltage. The apparatus further includes a second shift circuit coupled to the first input and the first shift circuit, and configured to output a second output clock, the second output clock having a high state corresponding to the input voltage.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: February 28, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Razvan Puscasu, Radu H. Iacob
  • Patent number: 9548673
    Abstract: The invention includes two parallel paths. A first path is composed of two contact ends of a first electronic switch and a first, third and fifth diodes, which connect in series. One contact end connects a first end of an AC source, and a control end connects a second end of the AC source. A second path is composed of two contact ends of a second electronic switch and a second, fourth and sixth diodes, which connect in series. One contact end connects the second end of the AC source, and a control end connects the first end of the AC source. The AC source is connected between the positive ends of the first and second diodes. The second end of the AC source separately connects negative ends of the first and third diodes through two capacitors. The first end of the AC source separately connects negative ends of the second and fourth diodes through another two capacitors. Negative ends of the fifth and sixth diodes connect together to form a voltage output end.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: January 17, 2017
    Assignee: NATIONAL APPLIED RESEARCH LABORATORIES
    Inventors: Ying-Zong Juang, Hann-Huei Tsai, Po-Chang Wu, Kuei-Cheng Lin, Chih-Yuan Yeh
  • Patent number: 9407213
    Abstract: A voltage amplifier is provided that includes a first row and a second row each having a respective first or second plurality of capacitors arranged collinearly. First row capacitors comprise first terminals and second row capacitors comprise second terminals. The first row and second row are parallel to each other along longitudinal and lateral axes. A third row has a first plurality of diodes and a fourth row has a second plurality of diodes, each row positioned cross-wise to the first row and located above the first and second rows along the vertical axis. The first diodes are positioned parallel to each other along the longitudinal and lateral axes, and the second diodes are parallel to each other along the longitudinal and lateral axes and positioned cross-wise to and above the first plurality along the vertical axis. Diodes and capacitors are directly and physically connected using respective electrical leads.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: August 2, 2016
    Assignee: Carlisle Fluid Technologies, Inc.
    Inventors: Brian Earl Gorrell, James Paul Baltz
  • Patent number: 9276478
    Abstract: A power converter includes a transformer having a primary winding and a secondary winding, a primary side circuit coupled to the primary winding, and a secondary side circuit coupled to the secondary winding and configured to output a substantially direct current (DC) output. The primary side circuit is configured to receive an input voltage and to switch the input voltage across the primary winding of the transformer. The secondary side circuit includes an active forward mode rectifier.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 1, 2016
    Inventors: Jayaraman Vijay Shankar, Suryanarayana Potharaju
  • Patent number: 9166496
    Abstract: A two-wire load control device prevents load malfunctioning, such as erroneous emission of an LED, due to a leak current, even when loads not taking countermeasures against noise are connected. The load control device is connected in series between a commercial power source and a load and an off power supply for ensuring an inner power supply at the time of turning off the load is provided with capacitors, which are switched to be connected in series or parallel, based on an input voltage. The control device makes the capacitors repeat charging and discharging, and a power discharged from the capacitors is used as the inner power supply, thereby reducing standby power requirement of the load control device at the time of turning off the load.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 20, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirotada Higashihama, Yu Saitou
  • Patent number: 9054069
    Abstract: A variable capacitance semiconductor structure is disclosed. Embodiments include a capacitor having three plates, a top plate, a middle plate, and a bottom plate. The top plate serves as a positive plate. The middle and bottom plates serve as ground plates for the capacitor. A switching circuit selects between the middle plate and the bottom plate for use as the ground plate of the capacitor. The middle plate is slotted, allowing electric fields to penetrate through the middle plate to the bottom plate. The slots prevent the electric fields from terminating at the middle plate. A different capacitance value can be selected, depending on whether the middle plate or bottom plate is selected as the ground plate. Logic circuitry is configured to control the selection of plates to achieve a variety of capacitance values.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: June 9, 2015
    Assignee: International Business Machines Corporation
    Inventors: Shyam Parthasarathy, Ananth Sundaram, Balaji Swaminathan
  • Publication number: 20150139391
    Abstract: A voltage multiplier 10 comprises a series of multiplier stages 12a, 12b, 12c, 12d. Each multiplier stage, for example 12b, comprises a first input 16b, a second input 14b, a first output 16c and second output 14c. The first and second outputs of a preceding multiplier stage are interconnected with first and second inputs of a subsequent multiplier stage. Furthermore, each multiplier stages, for example 12b, comprises two series connected diode elements D5, D6 having the same current conducting direction. The two series connected diode elements D5, D6 interconnect the first input 16b and the first output 16c. The second output 14c is coupled between the two series connected diode elements D5, D6. Each multiplier stage, for example 12b, comprises a buffer capacitor C6 interconnecting the respective first input 16b and the respective first output 16c.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 21, 2015
    Inventor: Peter Luerkens
  • Patent number: 8995621
    Abstract: A compact x-ray source can include a circuit (10) providing reliable voltage isolation between low and high voltage sides (21, 23) of the circuit while allowing AC power transfer between the low and high voltage sides of the circuit to an x-ray tube electron emitter (43). Capacitors (11, 12) can provide the isolation between the low and high voltage sides of the circuit. The x-ray source (110) can utilize capacitors of a high voltage generator (67) to provide the voltage isolation. A compact x-ray source (110) can comprise a single transformer core (101) to transfer alternating current from two alternating current sources (104a, 104b) to an electron emitter (43) and a high voltage generator (107). A compact x-ray source (120) can comprise a high voltage sensing resistor (R1) disposed on a cylinder (41) of an x-ray tube (40).
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: March 31, 2015
    Assignee: Moxtek, Inc.
    Inventors: Dongbing Wang, Dave Reynolds
  • Patent number: 8988136
    Abstract: A hybrid charge pump including a hybrid circuit configured to snub an over shoot or under shoot present in an input pulse in a snubbing operation if a level of the pulse is a first level, store the pulse in a charging operation if the level of the pulse is a second level different from the first level, and generate a negative voltage from the stored pulse in a negative voltage generation operation.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jehyung Yoon, Hyoung-Seok Oh, Kyoung-Jin Lee, Sang-Ik Cho
  • Publication number: 20150070951
    Abstract: An AC-to-DC power converting apparatus includes a power factor correction circuit generating a DC output voltage based on a rectified voltage obtained through rectifying an AC input voltage and on a PWM signal generated based on an adjustment current and a predetermined ramp signal. A multiplier-divider circuit includes: a ramp generating unit generating a ramp signal based on a clock signal and on a first detection voltage associated with the rectified voltage; a control unit generating a control signal based on the clock signal, the ramp signal, and a detection voltage generated based on the DC output voltage; and an output unit generating an adjustment signal based on an input signal associated with the rectified voltage and the control signal.
    Type: Application
    Filed: December 4, 2013
    Publication date: March 12, 2015
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: Chien-Hung Chen, Isaac Y. Chen, Yi-Wei Lee, Jyun-Che Ho
  • Patent number: 8976552
    Abstract: A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source which provides an AC voltage to a voltage multiplier circuit that converts the AC voltage to a high DC voltage. A parallel or combination parallel-series multiplication circuit is used, rather than a series multiplication circuit, to reduce the reverse voltage across each semiconductor rectifier in the multiplication circuit. A plurality of parallel capacitors is constructed using an elongate common capacitor electrode with individual capacitors formed from individual capacitor electrodes spaced along and separated from the common electrode by a layer of dielectric material. The layer of dielectric material can be tapered along the common electrode, and additional dielectric material can be positioned between edges of adjacent individual electrodes. A high voltage end individual electrode can be made wider to increase its capacitance.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: March 10, 2015
    Inventor: Gary Hanington
  • Patent number: 8928260
    Abstract: A traction motor system calculates motor flux by generating a real time effective resistance of a resistance grid calculated from motor torque and measured voltage on a DC link. Calculating effective resistance avoids solely relying on DC link voltage, which can be influenced by conditions such as wheel slip and drop out of one or more resistance grids. The effective resistance calculation is based on nominal motor values using known power levels and conditions. From these nominal values and the effective resistance, various scaling factors based on actual motor power can be generated and used to adjust a nominal flux reference to more accurately reflect actual motor flux. The scaling factors include power and torque scaling factors and a resistance scaling factor that is active during conditions such as wheel slip.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: January 6, 2015
    Assignee: Caterpillar Inc.
    Inventors: Alexander Cameron Crosman, III, Joshua M. Williams
  • Patent number: 8908400
    Abstract: A wireless energy transfer receiver includes an input configured to receive alternating current (AC) electric energy and an output configured to make available direct current (DC) electric energy. The receiver further includes a rectification component configured to convert the AC energy received at the input into DC energy available at the output, the DC energy made available as DC voltage; and a multiplication component configured to amplify a peak voltage of the AC energy received at the input, the DC voltage made available at the output correspondingly being higher than the peak voltage of the AC energy received at the input.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: December 9, 2014
    Assignee: National Semiconductor Corporation
    Inventors: Gianpaolo Lisi, Ali Djabbari
  • Publication number: 20140269105
    Abstract: An integrated circuit for generating a negative bitline voltage comprises a bitline connectable to a memory cell and a multitude of capacitors arranged in groups thereof connected to the bitline. A step signal generator can generate a consecutive sequence of step signals to be applied to a group of capacitors. The circuit may be part of an integrated memory circuit device to drive the bitline to a negative voltage to implement a write assist scheme.
    Type: Application
    Filed: August 2, 2013
    Publication date: September 18, 2014
    Applicant: Synopsys, Inc.
    Inventors: Prashant Dubey, Guarav Ahuja, Sanjay Kumar Yadav, Amit Khanuja
  • Patent number: 8797771
    Abstract: An AC-DC step-up converter circuit architecture for generating multiple output voltages, both positive and negative, in an implantable biomedical device is disclosed. Switches and active rectifiers are used inside the converter for charging capacitors from the AC source and delivering currents to the loads. Regulated output voltages with high power efficiency are obtained by controlling the on/off times of the switches using feedback loops that include integrator circuits configured to provide control parameters related to the various output voltages and their associated predetermined reference voltages.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 5, 2014
    Assignee: Alfred E. Mann Foundation for Scientific Research
    Inventor: Edward K. F. Lee
  • Publication number: 20140205072
    Abstract: A power generation system includes an input to receive a low-voltage alternating current and a number N of voltage-conversion modules coupled to the input, each electrically connected in series. Each voltage-conversion module includes a transformer configured to convert the low-voltage alternating current into a high-voltage alternating current. Each voltage-conversion module includes a multiplier configured to convert the high-voltage alternating current from the transformer into a high-voltage direct current. The multiplier includes a positive multiplier part and a negative multiplier part. The positive multiplier part and the negative multiplier part each includes a pair of input terminals connected in parallel with the transform and at least one multiplier stage comprising a single diode and a capacitor assembly. The number N is an even number between 4 and 24.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 24, 2014
    Applicant: General Electric Company
    Inventor: General Electric Company
  • Patent number: 8766605
    Abstract: A bridgeless PFC (power factor correction) converter with improved efficiency is disclosed. The bridgeless PFC converter comprises: a first input terminal and a second input terminal configured to receive an input AC signal; an output terminal; an inductor set comprising N inductors, wherein a first terminal of each inductor is coupled to the first input terminal; and an output stage comprising (N+1) switching circuits coupled between the output terminal and a ground node.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: July 1, 2014
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Yuancheng Ren, Bo Zhang, Miao Lei, Junming Zhang, James C Moyer, Eric Yang
  • Patent number: 8743568
    Abstract: Losses are reduced in a current supply circuit including an inverter having a switching element. The dynamic losses in an IGBT element including a free wheeling diode are proportional to the product of turn-on losses and a switching frequency, and the static losses are proportional to the product of a current flowing through the IGBT element and a saturation voltage across a collector and an emitter of the IGBT element. When the breakdown voltage of the IGBT element is increased twice, the saturation voltage across a collector and an emitter does not reach twice as much. Therefore, the static losses can be reduced by increasing a voltage twice and reducing a current by half that are supplied to a load to attain the same power to supplied to the load, with the same dynamic losses.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: June 3, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiyuki Maeda, Masanobu Tomoe
  • Patent number: 8743577
    Abstract: Embodiments of the subject invention relate to a method and apparatus for providing a low-power AC/DC converter designed to operate with very low input voltage amplitudes. Specific embodiments can operate with input voltages less than or equal to 1 V, less than or equal to 200 mV, and as low as 20 mV, respectively. Embodiments of the subject low-power AC/DC converter can be utilized in magnetic induction energy harvester systems. With reference to a specific embodiment, a maximum efficiency of 92% was achieved for a 1 V input, and efficiencies exceeding 70% were achieved for a 200 mV input. A specific embodiment functioned properly when connected to a magnetic energy harvester device operating below 200 mV input.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: June 3, 2014
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Shuo Cheng, Yuan Rao
  • Publication number: 20140112026
    Abstract: A resonant DC converter, combines a voltage type auto charge pump circuit with a full-bridge or half-bridge resonant DC conversion circuit at a primary side of a transformer, combines a double-voltage rectifier circuit at a secondary side of the transformer, and grants the circuit of the invention with characteristics of variable circuit architecture by means of the design of circuit parameters and the action of the LC resonant circuit. Integration of switching elements of the converter circuit and the use of characteristics of automatically changing the circuit architecture contribute to reduce the switching losses and increase the circuit conversion efficiency. Low output voltage ripple enables the circuit of the invention to avoid using large-capacitance electrolytic capacitors and be able to extend the service life of the transformer. The operation of the circuit of the invention at boost or buck mode can be controlled by adjusting the circuit parameters.
    Type: Application
    Filed: November 26, 2012
    Publication date: April 24, 2014
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Ching-Tsai Pan, Po-Yen Chen, Ming-Chieh Cheng, Ching-Hsiang Cheng
  • Publication number: 20140104904
    Abstract: A power management device of a touchable control system includes a boost circuit, a storage circuit, a detection circuit and a loading circuit. The boost circuit has an output terminal and generates an output voltage. The storage circuit electrically connects to the output terminal of the boost circuit and stores the output voltage. The detection circuit electrically connects to the storage circuit so as to detect the output voltage. The loading circuit electrically connects or disconnects to the output terminal of the boost circuit according to a predetermined value of the output voltage.
    Type: Application
    Filed: January 2, 2013
    Publication date: April 17, 2014
    Applicant: EGALAX_EMPIA TECHNOLOGY INC.
    Inventor: PO-CHUAN LIN
  • Publication number: 20140104896
    Abstract: Single and multiphase regenerative voltage doubler rectifiers, sag/swell corrector apparatus, and operating methods are presented in which rectifier switching devices are selectively pulse width modulated for regenerative load conditions and for regenerating power during input voltage swell circumstances.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Inventor: Rangarajan Tallam
  • Patent number: 8675380
    Abstract: The invention relates to a mains plug component with a housing and a mains switch component arranged in the housing comprising a first stage for rectifying a mains AC voltage and a second stage for generating a DC voltage from the rectified mains AC voltage. The first stage comprises an electromechanical switch, by means of which a first or second voltage range may be selected. The housing has a section for a pin of an inserted plug piece such that, on insertion, the switch is activated by the inserted pin. The plug piece for insertion has no pin for the first voltage range and a pin for the second voltage range.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: March 18, 2014
    Assignee: LOGICDATA Electronic & Software Entwicklungs GmbH
    Inventor: Walter Koch
  • Patent number: 8610411
    Abstract: The disclosed embodiments relate to a power-supply circuit, an electronic device that includes the power-supply circuit, and a method for generating high-voltage DC power from AC line power using the power-supply circuit. This power-supply circuit includes a voltage multiplier and a low dropout (LDO) regulator, and does not include a step-up transformer. Conventional power supplies often use a custom step-up transformer, which is expensive unless the power supplies are manufactured in high quantities. In contrast, one embodiment of the present disclosure provides a solid-state implementation of a 700 V regulated power supply that can take up to a 1020 V input from an 6× voltage multiplier powered from the AC mains. Hence, the disclosed power-supply circuit eliminates the need for large, heavy and expensive step-up transformers and chokes that are used in conventional high-voltage DC power supplies.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: December 17, 2013
    Assignee: Apple Inc.
    Inventors: Eric Smith, P. Jeffrey Ungar, Heather R. Sullens
  • Patent number: 8598445
    Abstract: A means of providing solar powered electricity for day and nighttime use supported in part by power from the grid to allow a small generator to electrify the home or business with a small generator operating with much larger capacity. Excess solar energy is provided to the power company as needed.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: December 3, 2013
    Inventors: Jon Murray Schroeder, Gerald Philip Hirsch
  • Patent number: 8593101
    Abstract: A power converting device is disclosed that can reduce switching loss occurring in a voltage source inverter that drives an AC motor. It is possible to supply DC power to the voltage source inverter from both a voltage source rectifier, which converts AC power from an AC generator into DC power, and a battery. A first switching circuit is inserted between the voltage source rectifier and the AC generator, and the battery is connected to the output side of the voltage source rectifier. A second switching circuit is inserted between the battery and the voltage source inverter. A third switching circuit and a reactor are inserted in series between the input side of the voltage source inverter and the input side of the voltage source rectifier. At least one of an upper arm and a lower arm of the voltage source rectifier can be chopper controlled.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 26, 2013
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Michio Iwahori
  • Patent number: 8564986
    Abstract: A current mode output control can have a current mode (CM) region of the high voltage output curve (VI) slope controlled by component selection and arrangement in the construction of high voltage power supplies. The controlled CM current slope output, the tapped multiplier feedback network, and the subsequent output voltage correction network, yields a power supply with the desired VM and CM output characteristics that is significantly less expensive to construct and more efficient than a power supply built using conventional construction techniques.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: October 22, 2013
    Inventors: Kenneth E. Wing, Scott T. Carroll
  • Publication number: 20130270831
    Abstract: The invention relates to an electric device with a winding (12) and means for inducing a current in the winding. A bridge circuit (400) electrically connects the winding (12) to a load (13).
    Type: Application
    Filed: December 9, 2010
    Publication date: October 17, 2013
    Applicant: SEABASED AB
    Inventors: Mats Leijon, Cecilia Bostrom, Mikael Eriksson
  • Publication number: 20130242627
    Abstract: High voltage diode-connected gallium nitride high electron mobility transistor structures or Schottky diodes are employed in a network including high-k dielectric capacitors in a solid state, monolithic voltage multiplier. A superjunction formed by vertical p/n junctions in gallium nitride facilitates operation of the high electron mobility transistor structures and Schottky diodes. A design structure for designing, testing or manufacturing an integrated circuit is tangibly embodied in a machine-readable medium and includes elements of a solid state voltage multiplier.
    Type: Application
    Filed: March 13, 2012
    Publication date: September 19, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen W. Bedell, Bahman Hekmatshoartabari, Devendra K. Sadana, Ghavam G. Shahidi, Davood Shahrjerdi
  • Patent number: 8456874
    Abstract: A direct current (DC) to DC converter, including: input ports for receiving an input DC voltage; output ports for outputting an output DC voltage; a first matrix of capacitors and switches; a second matrix of capacitors and switches; and a control circuit, coupled to the switches of the first and second matrices, configure d to repetitively: (i) configure the first matrix to a charge configuration and couple the first matrix to the input ports while configuring the second matrix to a discharge configuration and coupling the second matrix to the output ports; (ii) maintain the charge and discharge configurations for a first period of time; (iii) configure the second matrix to the charge configuration and couple the second matrix to the input ports while configuring the first matrix to the discharge configuration and couple the first matrix to the output ports; and (iv) maintain the charge and discharge configurations for a second period of time; (a) wherein the charge configuration and the discharge configurat
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: June 4, 2013
    Assignee: Ramot at Tel Aviv University Ltd.
    Inventors: Sigmund Singer, Yuval Beck
  • Patent number: 8437156
    Abstract: A voltage supply incorporates two voltage supplies connected in a mirror-image series arrangement to generate a DC voltage between the respective common terminals of the voltage supplies.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: May 7, 2013
    Assignee: GTAT Corporation
    Inventors: Steven Richards, Geoffrey Ryding, Theodore Smick
  • Patent number: 8411475
    Abstract: A power supply to convert AC power to DC power with a relatively constant voltage and linear current delivery. The DC power may be positive or negative voltage, or both may be produced. A fluctuating voltage from an AC voltage source (e.g., a transformer) is utilized to charge and substantially discharge a storage device on a cycle by cycle basis. The voltage of the storage device continuously supplements the fluctuating voltage to result in relatively constant voltage. Unlike a typical power supply, (a) the discharge of the storage device forces power into a load, (b) total capacitance may be substantially less than (e.g., 1% or less of) the capacitance of a typical power supply, (c) a shunt capacitor is not required, and (d) the transformer may be continuously utilized throughout the entire cycle (rather than for only a brief portion of each cycle), which may reduce noise.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: April 2, 2013
    Inventor: Robert H. Backert
  • Patent number: 8369116
    Abstract: New utility of an existing class of DC galvanically isolated current sourcing circuit topologies for power conversion simultaneously allows improvement in its secondary circuit(s) to power conversion efficiency and reduction in working voltage magnitudes, or simply reduction in working voltage magnitudes, with resulting benefits for reduction in manufacturing cost, reduction in size and weight, and increase in market acceptance, or may simply allow secondary circuit(s) to enable easier provisioning of safety, improvement in reliability, or improvement in efficiency. The magnitude of DC output voltage is optimized at higher value for greater efficiency, while simultaneously optimizing the secondary circuit's working voltage maximum magnitude at a lower value for greater safety. The method requires full cycle current-compliant input impedance of the secondary power source whereby the secondary of the DC galvanically isolating device behaves in a mode of being a full cycle voltage-compliant current source.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: February 5, 2013
    Inventor: Raymond Peter Maroon
  • Patent number: 8354582
    Abstract: A means of providing solar powered electricity for day and nighttime use supported in part by power from the grid to allow a small generator to electrify the home or business with a small generator operating with much larger capacity. Excess solar energy is provided to the power company as needed.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: January 15, 2013
    Inventors: Jon Murray Schroeder, Gerald Philip Hirsch
  • Patent number: 8351228
    Abstract: A voltage conversion circuit with reduced power consumption can be used for a power supply device (100). The power supply device (100) is composed of a power supply circuit (3) including an alternating power supply (1) and a rectifying circuit (2); a voltage conversion circuit (6) including a plurality of capacitors (4) and a switching circuit (5); and a load circuit (7). The voltage conversion circuit (6) is connected between the power supply circuit (3) and the load circuit (7). The alternating power supply (1) is connected to a switching circuit (5) of the voltage conversion circuit (6) without having the rectifying circuit (2) in between. An output voltage (potential fluctuation: a potential difference generated in the signal waveform of the power supply voltage) from the alternating power supply (1) prior to rectification is applied to the switching circuit (5).
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: January 8, 2013
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Makoto Izumi
  • Publication number: 20120281445
    Abstract: A transformer unit includes: a transformer which is mounted on a printed board, and which includes a bobbin around which at least a primary winding and a secondary winding are wound and a core which is inserted into a center of the bobbin; and a component holding portion configured to hold a component at an outer peripheral portion except for a mount side to be mounted on the printed board. The transformer unit further includes a voltage doubler rectifying circuit which is provided at the component holding portion and which is configured to rectify a high-frequency high voltage applied from the secondary winding. The secondary winding is connected to a lead terminal of a high-voltage component constituting the voltage doubler rectifying circuit via tension absorbing means provided at the bobbin.
    Type: Application
    Filed: January 6, 2011
    Publication date: November 8, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Hideaki Moriya, Nobuo Shirokawa, Haruo Suenaga, Manabu Kinoshita
  • Patent number: 8300422
    Abstract: An electronic apparatus includes, for example, a circuit board with an electronic component and a piezoelectric element, a reference potential pattern that gives a reference potential to at least one of the electronic component and the piezoelectric element, and a solder land connected to the reference potential pattern. On the circuit board, the electronic component is located on a downstream side in a transport direction of the circuit board during mounting of the piezoelectric element and the electronic component on the solder land, and the piezoelectric element is located on an upstream side in the transport direction.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: October 30, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Osamu Nagasaki
  • Publication number: 20120262959
    Abstract: A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source which provides an AC voltage to a voltage multiplier circuit that converts the AC voltage to a high DC voltage. A parallel or combination parallel-series multiplication circuit is used, rather than a series multiplication circuit, to reduce the reverse voltage across each semiconductor rectifier in the multiplication circuit. A plurality of parallel capacitors is constructed using an elongate common capacitor electrode with individual capacitors formed from individual capacitor electrodes spaced along and separated from the common electrode by a layer of dielectric material. The layer of dielectric material can be tapered along the common electrode, and additional dielectric material can be positioned between edges of adjacent individual electrodes. A high voltage end individual electrode can be made wider to increase its capacitance.
    Type: Application
    Filed: June 19, 2012
    Publication date: October 18, 2012
    Inventor: Gary Hanington
  • Publication number: 20120236481
    Abstract: A high voltage power supply for use in small diameter spaces such as in oil well logging devices can include a voltage multiplier circuit that converts the AC voltage to a high DC voltage. The dielectric material can be tapered so as to increase the capacitance of each stage, especially for the lower voltage stages. An encasement of each electrode within a rolled up structure of a common AC or DC structure allows for an improved value of AC or DC capacitance (or both). The overlapping of each AC (or DC) electrode around the common AC (or DC) electrode in two or more increasing increments, or sections, minimizes the droop voltage regulation effects found in the high voltage power supply and allows for a more even distribution of voltage conversion per stage. By tapering the dielectric and/or graduating the capacitors in value, a higher efficiency design may be realized.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 20, 2012
    Inventor: Gary Hanington
  • Patent number: 8270187
    Abstract: An electric power supply circuit includes a switching element (S) for causing a short-circuit for output power of a diode bridge circuit (12), a zero-cross detector section (5a) for detecting a point at which an input voltage reaches a level equal to or lower than a reference level, a timer section (5d) for starting a count upon the detection by the zero-cross detector section (5a), and a PAM waveform output section (5c) for causing the switching element (S) to perform switching with a predetermined output timing so that a waveform of the input current is caused to approximate to a sine wave. The circuit further includes a correction section (5e) for correcting, when a difference between a detection interval from detection to detection by the zero-cross detector section (5a), and an average value for detection intervals up to current detection occurs, an initial value of the count of the timer section (5d) according to the difference.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: September 18, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Ryou Nakamoto, Masafumi Hashimoto, Keisuke Shimatani, Keiichi Yoshisaka, Masakazu Katou
  • Patent number: 8244201
    Abstract: A system and method for generating a rectified signal in a RFID tag. An alternating signal is received by the RFID tag, and a first phase of the alternating signal is coupled to a gate and to a first non-controlling terminal of a first switching transistor. The non-controlling terminal of the first switching transistor is one of a source and a drain of the first switching transistor. A first bias voltage is applied between the first non-controlling terminal and the gate of the first switching transistor and a rectified voltage is received between the first non-controlling terminal and a second non-controlling terminal of the first switching transistor.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: August 14, 2012
    Assignee: Impinj, Inc.
    Inventors: Ronald A. Oliver, Christopher J. Diorio
  • Patent number: 8237302
    Abstract: Main circuit of an electric power generating apparatus for dispersed power supply, having a permanent magnet type electric power generator driven by windmill or waterwheel and having three windings, each inducing a different value of induced voltage, AC outputs of the generator rectified by rectifiers, and DC outputs of the rectifiers summed in parallel for output. First and second reactors are respectively connected in series between first and second rectifiers and output terminals of first and second windings, the first winding inducing the lowest induced voltage among the three windings, the second winding inducing the second lowest. A capacitor is connected between a third rectifier and an output terminal of a third winding inducing the highest induced voltage. The sum of inductive impedance by internal inductance of the third winding and capacitive impedance by the capacitor is capacitive impedance within a range of rotational speed of the generator.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: August 7, 2012
    Assignee: Toyo Electric Mfg. Co., Ltd.
    Inventors: Takashi Shiota, Keita Tanaka, Tsutomu Isaka
  • Publication number: 20120195080
    Abstract: The disclosed embodiments relate to a power-supply circuit, an electronic device that includes the power-supply circuit, and a method for generating high-voltage DC power from AC line power using the power-supply circuit. This power-supply circuit includes a voltage multiplier and a low dropout (LDO) regulator, and does not include a step-up transformer. Conventional power supplies often use a custom step-up transformer, which is expensive unless the power supplies are manufactured in high quantities. In contrast, one embodiment of the present disclosure provides a solid-state implementation of a 700 V regulated power supply that can take up to a 1020 V input from an 6× voltage multiplier powered from the AC mains. Hence, the disclosed power-supply circuit eliminates the need for large, heavy and expensive step-up transformers and chokes that are used in conventional high-voltage DC power supplies.
    Type: Application
    Filed: April 19, 2011
    Publication date: August 2, 2012
    Applicant: APPLE INC.
    Inventors: Eric Smith, P. Jeffrey Ungar, Heather R. Sullens
  • Patent number: 8222872
    Abstract: A auxiliary power supply having a selectable operating mode raises efficiency of a switched-power converter. By selectably controlling the input/output behavior of the auxiliary power supply receiving a voltage from an auxiliary winding of one of the power converter magnetic elements, more efficient operation of the auxiliary power supply over the full variation range of the input line voltage is achieved. By selecting the operating mode according to the relationship between the required auxiliary power supply output and the voltage available across the auxiliary winding under current operating conditions, the turns ratio of the auxiliary winding and other circuit parameters can be optimized for efficiency. Selection of the operating mode may be made by detecting the output or input voltage of the multiplier, and the selection may be performed under hysteretic control so that the variation in auxiliary power supply output voltage is reduced dynamically.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: July 17, 2012
    Assignee: Cirrus Logic, Inc.
    Inventors: John L. Melanson, Mauro L. Gaetano, Larry L. Harris
  • Patent number: 8218342
    Abstract: The power supply device according to the present invention converts alternating-current power into direct-current power, and supplies the direct-current power to a load. Further, the power supply device includes a buffer, a control section, a rectifier circuit, a smoothing circuit, and a switch. After a predetermined zero cross point is detected, the control section uses in common, over a predetermined period of the alternating-current power, predetermined parameters retained in the buffer in calculating a timing at which a PAM interrupt pulse is generated.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: July 10, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Masakazu Katou, Ryou Nakamoto, Keisuke Shimatani, Keiichi Yoshisaka, Masafumi Hashimoto