With Capacitor Patents (Class 307/108)
  • Patent number: 10322638
    Abstract: The invention relates to a measuring transducer for charging stations of electric vehicles. In the measuring transducer, a measuring device is connected to a direct current charging circuit for detecting at least one direct current measurement variable. A transducer for converting the direct current measurement variable into an alternating current actuating variable is provided, and the measuring transducer also includes an actuating means for adjusting at least one alternating current variable in an alternating current measuring circuit as a function of the alternating current actuating variable.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: June 18, 2019
    Assignee: innogy SE
    Inventors: Holger Riemenschneider, Stephan Cater, Jürgen Waffner
  • Patent number: 10312890
    Abstract: A pulse power device based on an annular ceramic solid state line. The pulse power device comprises several pulse forming lines (2), two charging inductors (1), and several gas switches that are connected as a whole based on Marx voltage superposition. The pulse forming lines (2) are annular pulse forming lines (2), and the annular surface of each annular pulse forming line (2) is provided with one gas switch. The annular pulse forming lines (2) are successively superposed together to form a column structure through the gas switches. Each charging inductor (1) passes through the inner ring of each annular pulse forming line (2) to be disposed inside the column structure. An annular insulation plate (3) is disposed between every two annular pulse forming lines (2).
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: June 4, 2019
    Assignee: INSTITUTE OF APPLIED ELECTRONICS, CAEP
    Inventors: Jie Tan, Min Luo, Peng Wang, Qiang Kang, Fei Xiang, Guangyao Luo, Xiaoliang Yang
  • Patent number: 10128691
    Abstract: A bidirectional power converter circuit is controlled via a hysteresis loop such that the bidirectional power converter circuit can compensate in near real time for variations and even changes in transmit and receive coil locations without damaging components of the system. Because the bidirectional power converter is capable of both transmitting and receiving power (at different times), one circuit and board may be used as the main component in multiple wireless power converter designs.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: November 13, 2018
    Assignee: Enovate Medical LLC
    Inventors: George Blakely, Gordon Waid
  • Patent number: 10097085
    Abstract: A system for generating pulsed power, including: an input receiving an input pulse; a pulse generator generating high voltage pulses including a first input receiving a signal from the input pulse in a charge phase of the generator and a second input receiving a trigger signal of a discharge phase of the generator; a control circuit connected to both the input for receiving the input pulse and to the second input of the generator, the control circuit configured to generate a trigger signal when the end of the input pulse is detected.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: October 9, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Baptiste Cadilhon, Bruno Cassany
  • Patent number: 10065523
    Abstract: An Engine Start and Battery Support Module for a vehicle is provided that utilizes a bank of Ultra Capacitors (UCs) charged with or without running the vehicle's alternator to levels that support both engine starting assistance and hotel load support. The UCs' per-cell charge can be adjured and raided during periods of low temperatures and even higher during ultralow temperatures. The adjustment, which can be dynamic and/or automatic, increases the UC energy storage capability. Further, the release of energy from the UCs is controlled by a pulse width modulation (PWM) controller based on the DC bus voltage. The UCs can be charged either from an onboard DC/DC converter, an AC hook up, or from smartly switching the banks of UCs between parallel and serial configurations.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: September 4, 2018
    Assignee: IOXUS, INC.
    Inventors: Robert J. Wood, Chad Hall, Daniel A. Patsos, Jeff Colton, Bryce Gregory
  • Patent number: 9805902
    Abstract: A well-logging tool may include a sonde housing, and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a bi-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 31, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Matthieu Simon, Anthony Durkowski, Christian Stoller
  • Patent number: 9805903
    Abstract: A well-logging tool may include a sonde housing and a radiation generator carried by the sonde housing. The radiation generator may include a generator housing, a target carried by the generator housing, a charged particle source carried by the generator housing to direct charged particles at the target, and at least one voltage source coupled to the charged particle source. The at least one voltage source may include a voltage ladder comprising a plurality of voltage multiplication stages coupled in a uni-polar configuration, and at least one loading coil coupled at at least one intermediate position along the voltage ladder. The well-logging tool may further include at least one radiation detector carried by the sonde housing.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 31, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Matthieu Simon, Anthony Durkowski, Christian Stoller
  • Patent number: 9660619
    Abstract: The present invention relates to a high voltage pulse generator which can operate for a long time and has high pulse frequency. In the preferred embodiment of the invention, the air stored in the air container is transmitted to the air duct by means of a hose over the regulator that adjusts the pressure and flow rate of the air. The air given into the air duct blows into the chamber through the nozzles. Then, this air is taken into this air duct by means of the nozzles placed on the other air duct and is transferred to the outer environment over an exhaust valve placed under the air duct. The air coming from the air container takes the place of the removed air.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: May 23, 2017
    Assignee: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI
    Inventors: Mirzahan Hizal, Burak Isiktan, Cagdas Enis Doyuran
  • Patent number: 9642202
    Abstract: In embodiments, improved capabilities are described for dimming performance of lighting methods and systems, such as the improvement of dimming LED lamps that are dimmed from standard external dimming devices. Methods and systems for improving dimming performance include a fast startup override facility for overriding a default dimming function of the lamp's electronics through forcing the lamp electronics to operate with a higher than normal duty cycle to ensure the lamp electronics can deliver higher than normal power to an LED module during a dimming current level startup condition. Dimming facilities may also include a dynamic RC selection facility, an active N-level bleeder facility, a dimmer-type detection facility, an improved dimming linearity through symmetrical phase cutting facility, and a flicker reduction facility.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 2, 2017
    Assignee: ECOSENSE LIGHTING INC.
    Inventors: Hang Fai Li, Ping Ho Yee, Hoi Kuen Chan, Chiu Ho Wong
  • Patent number: 9507370
    Abstract: A voltage conversion circuit has a plurality of primary capacitors charged by a power supply, a secondary capacitor connected in parallel to the respective plurality of primary capacitors that is charged at a voltage supplied to a load circuit, a plurality of switching circuits provided in association with the respective plurality of primary capacitors that change over a connection state between the primary capacitors and the secondary capacitor, and a connection control circuit that successively connects the respective primary capacitors to the secondary capacitor through the corresponding switching circuits, the respective primary capacitors across which the charging voltages reach a predetermined connection voltage higher than a charging voltage across the secondary capacitor.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: November 29, 2016
    Assignee: OMRON Corporation
    Inventors: Hiroshi Sameshima, Misato Nabeto, Tatsuakira Masaki, Hiroshi Tsuji
  • Patent number: 9490073
    Abstract: According to one embodiment, an electronic device includes at least one variable capacitor including a first electrode and a second electrode, and being brought into one of a first state and a second state according to a voltage applied between the first electrode and the second electrode, the first electrode and the second electrode being closer to each other in the second state compared with in the first state, and a charge pump circuit provided in a first integrated circuit chip and producing a voltage for establishing the second state. An external capacitor is connectable to the first integrated circuit chip and is receivable the voltage produced by the charge pump circuit.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: November 8, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Tamio Ikehashi
  • Patent number: 9448042
    Abstract: An inductively coupled transmission line with distributed electromotive force source and an alternative coupling model based on empirical data and theory were developed to initiate bridge wire melt for a detonator with an open and a short circuit detonator load. In the latter technique, the model was developed to exploit incomplete knowledge of the open circuited detonator using tendencies common to all of the open circuit loads examined. Military, commercial, and improvised detonators were examined and modeled. Nichrome, copper, platinum, and tungsten are the detonator specific bridge wire materials studied. The improvised detonators were made typically made with tungsten wire and copper (˜40 AWG wire strands) wire.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: September 20, 2016
    Assignee: The Board Of Regents Of The Nevada System Of Higher Education On Behalf Of The University of Nevada, Las Vegas
    Inventor: Robert A. Schill, Jr.
  • Patent number: 9390067
    Abstract: A method specially designed for detecting events associated with partial discharges (PDs) in high voltage cables includes the identification of the location and the evaluation of the amplitude and rate of repetition per period of the grid voltage, with the possibility of identifying different sources producing PD signals as a function of the location thereof and recognising the type of defect associated with PDs in the same location. Generated electric signals are measured and the discriminated in relation to the background noise. A system for carrying out the method includes devices for discriminating the noise in relation to the transient waveform of the PD, determining the parameters associated therewith, determining the map of sources of PDs along the length of the cable, graphically representing the sources, and identifying the patterns of the sources of PDs separated as a function of the location thereof along the length of the cable.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: July 12, 2016
    Assignee: UNIVERSIDAD POLITECNICA DE MADRID
    Inventors: Fernando Garnacho Vecino, Miguel Angel Sanchez-Uran Gonzalez, Javier Ortego La Moneda
  • Patent number: 9300280
    Abstract: A high voltage circuit is provided for electrical pulse generation. The circuit includes an input voltage supply, a ground potential, a difference load, inverting and non-inverting Marx bank circuits connected respectively to output voltage nodes. The voltage supply has positive and negative terminals, with ground connecting to the voltage supply at the negative terminal. The output voltage nodes connect to the load. The inverting Marx bank circuit has a first n-plurality of stages in parallel, connecting at a first stage to the positive terminal and at a last stage at the inverting output node. The non-inverting Marx bank circuit has a second plurality of stages in parallel, connecting at a first stage to the positive terminal and at a last stage at the non-inverting output node. The load combines the inverting output voltage of minus n-times the input voltage with the non-inverting output voltage of plus n-times the input voltage for a total of 2n-times the input voltage.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: March 29, 2016
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventor: James Thomas Camp
  • Publication number: 20150108852
    Abstract: The present invention relates to a high voltage pulse generator which can operate for a long time and has high pulse frequency. In the preferred embodiment of the invention, the air stored in the air container is transmitted to the air duct by means of a hose over the regulator that adjusts the pressure and flow rate of the air. The air given into the air duct blows into the chamber through the nozzles. Then, this air is taken into this air duct by means of the nozzles placed on the other air duct and is transferred to the outer environment over an exhaust valve placed under the air duct. The air coming from the air container takes the place of the removed air.
    Type: Application
    Filed: April 2, 2013
    Publication date: April 23, 2015
    Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKET
    Inventors: Mirzahan Hizal, Burak Isiktan, Cagdas Enis Doyuran
  • Publication number: 20150102690
    Abstract: A high voltage circuit is provided for electrical pulse generation. The circuit includes an input voltage supply, a ground potential, a difference load, inverting and non-inverting Marx bank circuits connected respectively to output voltage nodes. The voltage supply has positive and negative terminals, with ground connecting to the voltage supply at the negative terminal. The output voltage nodes connect to the load. The inverting Marx bank circuit has a first n-plurality of stages in parallel, connecting at a first stage to the positive terminal and at a last stage at the inverting output node. The non-inverting Marx bank circuit has a second plurality of stages in parallel, connecting at a first stage to the positive terminal and at a last stage at the non-inverting output node. The load combines the inverting output voltage of minus n-times the input voltage with the non-inverting output voltage of plus n-times the input voltage for a total of 2n-times the input voltage.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 16, 2015
    Applicant: United States Government, as represented by the Secretary of the Navy
    Inventor: James Thomas Camp
  • Patent number: 9000618
    Abstract: A transmission line driver and a method for driving the same are provided, in which a composite current source is provided as an input current source, such that an output voltage is fixed. The composite current source includes an internal current source and an external current source. The composite current source is supplied to a single-ended transmission line driver or a differential transmission line driver, such that the output voltage is fixed.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: April 7, 2015
    Assignee: Realtek Semiconductor Corp.
    Inventor: Su-liang Liao
  • Patent number: 8981589
    Abstract: Systems and methods are provided for regulating the state of charge of a battery. An exemplary electrical system includes a fuel cell coupled to a bus and a battery coupled to the bus via a switching arrangement coupled to a capacitor. An exemplary method for operating the electrical system involves operating the switching arrangement such that a voltage of the battery is substantially equal to a voltage of the fuel cell when a state of charge of the battery is greater than a lower threshold value and less than an upper threshold value, and operating the switching arrangement to couple the capacitor electrically in series between the battery and the bus when the state of charge of the battery is not between the lower threshold value and the upper threshold value.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: March 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Sebastian Lienkamp, Peter Kilian, Stephen Raiser
  • Patent number: 8922065
    Abstract: A wireless energy transfer system includes a first energy transfer unit having at least one resonant frequency, a second energy transfer unit having the at least one resonant frequency, and a load. The first wireless energy transfer unit includes a first coil magnetically coupled to a first wireless energy transfer cell, and the second wireless energy transfer unit includes a second coil magnetically coupled to a second wireless energy transfer cell. The first coil receives first energy and through the magnetic coupling between the first coil and the first wireless energy transfer cell, the first wireless energy transfer cell is caused to generate second energy, wherein the second wireless energy transfer cell receives the second energy and through the magnetic coupling between the second wireless energy transfer cell and the second coil, the second coil is caused to provide third electromagnetic wave energy to the load.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: December 30, 2014
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Mingui Sun, Steven Hackworth, Robert Sclabassi, Fei Zhang, Xiaoyu Liu
  • Publication number: 20140354076
    Abstract: A linear transformer driver includes at least one ferrite ring positioned to accept a load. The linear transformer driver also includes a first, second, and third power delivery module. The first power delivery module sends a first energy in the form of a first pulse to the load. The second power delivery module sends a second energy in the form of a second pulse to the load. The third power delivery module sends a third energy in the form of a third pulse to the load. The linear transformer driver is configured to form a flat-top pulse by the superposition of the first, second, and third pulses. The first, second, and third pulses have different frequencies.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 4, 2014
    Inventors: Michael G. Mazarakis, Alexander A. Kim, Vadim A. Sinebryukhov, Sergey N. Volkov, Sergey S. Kondratiev, Vitaly M. Alexeenko, Frederic Bayol, Gauthier Demol, William A. Stygar, Joshua Leckbee, Bryan V. Oliver, Mark L. Kiefer
  • Patent number: 8901818
    Abstract: A spark gap switch for high power ultra-wideband electromagnetic wave radiation is provided. The spark gap switch includes a casing, electrodes, brackets and an electrode protrusion. Openings are formed in respective opposite ends of the casing. The electrodes are installed in the casing at positions spaced apart from each other in such a way that the electrodes face each other and are disposed inside the openings. The brackets are installed in the respective openings of the casing. The brackets fasten rear ends of the corresponding electrodes to the casing. The electrode protrusion is provided on a central portion of at least either of the electrodes to induce stabilized discharge. The maximum diameter of the electrodes is smaller than the inner diameter of the casing so that the circumferential outer surfaces of the electrodes do not make contact with the circumferential inner surface of the casing.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 2, 2014
    Assignee: Agency for Defense Development
    Inventors: Jiheon Ryu, Cheon Ho Kim, Jaimin Lee
  • Publication number: 20140265626
    Abstract: An electric fence energizer provides automated reporting of faults and other events as well as fault location to reduce effort in diagnosing faults and intrusion events in electric fences by measuring impedance changes using a time-domain reflectometer. In some embodiments, methods determine the location of a fault in distance from the energizer and provide timely and appropriate condition information.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Electric Guard Dog, LLC
    Inventors: Jack DeMao, Steve Batti, Michael Baxter, Mark Roberts
  • Patent number: 8836171
    Abstract: The present invention provides a modulation circuit and a method for modulating a wireless power transfer circuit. The modulation circuit has a switching circuit having a first state and a second state. The modulation circuit also has a modulation mode in which the first state defines a normal state and the second state defines an operative state. In the operative state, the modulation circuit modulates an electrical parameter of the wireless power transfer circuit in a modulation direction. The modulation circuit is configured to apply a trial modulation to the electrical parameter to determine whether the modulation direction is in a desired modulation direction. The modulation circuit is also configured to apply a modulation translation if the modulation direction is not in the desired modulation direction, with the modulation translation changing the modulation mode such that the modulation direction is in the desired modulation direction.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: September 16, 2014
    Assignee: ConvenientPower HK Ltd.
    Inventors: Wai Pong Choi, Xun Liu
  • Patent number: 8749099
    Abstract: A clamping circuit includes a clamping core connected to an output terminal and having a central node connected to a voltage reference and at least one first and one second clamp transistor, connected to the central node and having respective control terminals, the clamping core being also connected at the input to a low voltage input driver block. The clamping core includes a first switching off transistor connected to the output terminal and to the first clamp transistor, as well as a second switching off transistor connected to the output terminal and to the second clamp transistor.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: June 10, 2014
    Assignee: STMicroelectronics S.r.l.
    Inventors: Sandro Rossi, Davide Ugo Ghisu, Antonio Ricciardo
  • Publication number: 20140063593
    Abstract: A circuit apparatus for driving short current pulses through a laser diode is disclosed. The circuit allow fast recovery time, comparable to the pulse duration. This enables high duty cycle pulse trains and bursts. The fast recovery is achieved by a passively self gated charging of the pulse circuit.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Inventor: Martin Ole Berendt
  • Publication number: 20140008968
    Abstract: Methods and apparatuses for directly charging capacitors in a down-hole pulsed power system used for electrocrushing drilling. An above ground power supply is directly connected to the capacitors. The power supply can be a switching power supply, a DC supply, or an AC supply. Capacitor voltage is monitored and controlled. The system reduces noise caused by coupling control signal cables and the power cable, and does not have the ground swing control problems of other charging schemes. The power may alternatively be provided by microwave transmission.
    Type: Application
    Filed: July 5, 2013
    Publication date: January 9, 2014
    Inventor: William M. Moeny
  • Publication number: 20130221876
    Abstract: A switching arrangement for applying voltage pulses across a load, comprising a plurality of capacitive elements (C1-C9) connected in series, and a first switch arrangement (S) connected to the series connection to apply voltage pulses to the load, and a second switch arrangement (S1, S2) connected to a capacitive element of the series connection, such that one of the capacitive elements (C1) can be switched out of or switched into the series connection, in order to produce voltage pulses of respectively lower or higher levels, without the need to dissipate energy into a resistive load.
    Type: Application
    Filed: June 29, 2011
    Publication date: August 29, 2013
    Inventors: Stephen Mark Iskander, Michael John Bland, Paul Ridgwell
  • Patent number: 8487922
    Abstract: A buffer circuit drives a capacitive load based on a voltage Vin. In a setup period, switches are in an ON state, and in a drive period, a switch is in an ON state. A voltage comparison unit compares the voltage Vin in the setup period and a voltage Vout in a drive period to output a comparison result voltage. A push-pull output unit includes a TFT for charge and a TFT for discharge. A drive control unit controls the TFTs to be in an OFF state in the setup period, and in the drive period, selectively controls the TFTs to be in an ON state in accordance with the comparison result voltage. If Vout<Vin, the comparison result voltage rises, the TFT becomes in an ON state, a voltage at a node falls, the TFT becomes in the ON state, and the voltage Vout rises. Thus, there is a provided a small-sized capacitive load drive circuit with low power consumption and robust against process variation.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: July 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Christopher Brown, Yasuyuki Ogawa
  • Patent number: 8446047
    Abstract: A vehicle interior light includes a lighting source that illuminates a vehicle interior; an decorative lighting source that decoratively illuminates the vehicle interior; a lighting switch that controls on-off state of the lighting source; an decorative lighting switch that controls on-off state of the decorative lighting source and the lighting source; and a light dimming unit that lowers illuminance of the lighting source. When the decorative lighting source is turned on, power is supplied to the decorative lighting source so that the decorative lighting source is lit up, while power is supplied to the lighting source through the light dimming unit so that the lighting source is lit up with low illuminance.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 21, 2013
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Atsuhiko Ito, Shinichi Yaoichi, Nobuki Hayashi, Takuma Saito
  • Publication number: 20130042780
    Abstract: A downhole explosive detonation comprises a high voltage electro-explosive initiator comprising an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. Explosive is initiated in a direction approximately parallel, or in another version perpendicular to the capacitor discharge unit. A unique configuration and construction of the assembly allows installation through a small service port in the gun housing structure for more efficient gun arming. A real time downhole voltage monitoring is described that transmits voltage readings to the surface during a firing sequence.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 21, 2013
    Inventors: James E. Brooks, Nolan C. Lerche
  • Publication number: 20120326528
    Abstract: A novel design scheme for the compensation circuitry of solid-state Marx modulators has been described for enhancing the compensation ability of the compensation cells of solid-state Marx modulators and simplifying the entire circuitry of the modulator. High-speed solid-state switches are adopted in the new compensation cell for the control of the compensation actions. Inductive components and diodes are adopted in the design scheme to smooth the flattop of the voltage pulse output by the Marx modulator.
    Type: Application
    Filed: July 10, 2012
    Publication date: December 27, 2012
    Inventors: Ping Chen, Martin L. Lundquist, David U.L. Yu
  • Publication number: 20120168177
    Abstract: An apparatus and method for controlling power delivered to a pulsed power system which includes a command charge switch for controlling when power produced by a primary power system is fed into a cable. The command charge switch also controls the power delivered to the pulsed power system in a bottom hole assembly.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 5, 2012
    Applicant: SDG, LLC
    Inventor: William M. Moeny
  • Publication number: 20120154259
    Abstract: A pulse generator that is capable of improving (e.g., increasing) the rising and falling speeds of its pulses. The pulse generator includes a third switch and a first diode serially coupled between a first power source and a data line; a fourth switch and a second diode serially coupled between the data line and a second power source configured to have a voltage lower than that of the first power source; a pulse controller for increasing a voltage of the data line to a voltage higher than that of the first power source or for reducing the voltage of the data line to a voltage lower than that of the second power source; and a first capacitor coupled between the pulse controller and the data line.
    Type: Application
    Filed: August 12, 2011
    Publication date: June 21, 2012
    Inventors: Do-Ik Kim, Joo-Hyeon Jeong
  • Patent number: 8120207
    Abstract: This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: February 21, 2012
    Assignee: University of Southern California
    Inventors: Jason Sanders, Andras Kuthi, Martin A. Gundersen, William Henry Moore
  • Patent number: 8115343
    Abstract: This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: February 14, 2012
    Assignee: University of Southern California
    Inventors: Jason Sanders, Andras Kuthi, Martin A. Gundersen, William Henry Moore
  • Patent number: 8115456
    Abstract: A circuit is disclosed for a power supply unit for generating a DC voltage, the power supply unit having a current transformer, a rectifier, a series circuit including a first blocking diode and a charging capacitor, an electronic switch which is in parallel with the current transformer, a comparator, a voltage reference circuit for the comparator. In at least one embodiment, the circuit includes a circuit for monitoring the voltage across the charging capacitor. The comparator is used to control the electronic switch on the basis of the voltage across the charging capacitor in relation to the voltage which is generated by the voltage reference circuit and is applied to the comparator. In at least one embodiment, provision is made of a tap which is located between the rectifier and the first blocking diode and at which the circuit for monitoring the voltage across the charging capacitor is located. The circuit is in the form of an RC combination having a second blocking diode connected in series.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: February 14, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Andreas Fischer
  • Patent number: 8102235
    Abstract: Optimal operating techniques are disclosed for using coreless printed-circuit-board (PCB) transformers under (1) minimum input power conditions and (2) maximum energy efficiency conditions. The coreless PCB transformers should be operated at or near the ‘maximum impedance frequency’ (MIF) in order to reduce input power requirement. For maximum energy efficiency, the transformers should be at or near the “maximum efficiency frequency” (MEF) which is below the MIF. The operating principle has been confirmed by measurement and simulation. The proposed operating techniques can be applied to coreless PCB transformers in many circuits that have to meet stringent height requirements, for example to isolate the gates of power MOSFET and IGBT devices from the input power supply.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 24, 2012
    Assignee: City University of Hong Kong
    Inventors: Shu Yuen Ron Hui, Sai Chun Tang
  • Publication number: 20110298299
    Abstract: These various embodiments serve to facilitate interlaced amplitude pulsing using a hard-tube type pulse generator having at least one energy-storage unit each comprising at least one energy-storing capacitor. Generally speaking, this comprises controlling an amount of energy withdrawn from the energy-storage unit and provided to an output load to form productive electric pulses by controlling at least one of: (1) energy replenishment; and (2) non-productive energy withdrawal of the energy-storage unit, to thereby achieve a series of productive interlaced amplitude electric pulses.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 8, 2011
    Applicant: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Gongyin Chen, Robert Edward Drubka
  • Patent number: 8018096
    Abstract: An inductive pulse forming network stores electrical energy delivered from an outside prime power supply in the electric field of a low-voltage, high-energy density network capacitor. Through timed actuation of a series of one or more switches, the energy stored in the electric field of the network capacitor is subsequently converted to electrical energy stored in the magnetic field of a network inductor. The energy stored in the network inductor supplies high-current, high-power electrical energy to drive an electromagnetic launcher such as a railgun.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: September 13, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: William Bryan Maier, II
  • Patent number: 7989987
    Abstract: The features of this invention allow construction and operation of a variety of high voltage, high repetition rated pulse generators of the Marx type that are switched with photon initiated semiconductor switches of the closing type. The photon initiated semiconductor switches can be constructed with bulk materials or in layered devices such as thyristors. Variations on the invention permit the formation of shaped high voltage pulses; particularly those that are nearly rectangular: with controlled rise and fall times, minimal or no overshoot, and minimal voltage ripple.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: August 2, 2011
    Inventor: Kenneth Fox McDonald
  • Patent number: 7939971
    Abstract: High-voltage pulses are generated and injected in a parallel-capacitative manner into the first stage of a multistage Marx generator at suitable intervals. The high-voltage pulses result in a longitudinal overvoltage triggering of the first spark gap of the Marx generator. As a result, industrial applications are able to generate, in a fault-free manner, high-voltage pulses having a predetermined repetition rate over a prolonged period of time.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: May 10, 2011
    Assignee: Sudzucker Aktiengesellschaft
    Inventor: Werner Hartmann
  • Patent number: 7919887
    Abstract: In order to provide a pulse power supply device using regenerating magnetic energy stored in a discharge circuit to a capacitor so as to use it as next discharge energy and supplying a bipolar pulse current with high repetition, a bridge circuit is composed of four inverse-conductive semiconductor switches, a charged energy source capacitor is connected to a DC terminal of the bridge circuit, and an inductive load is connected to its AC terminal. A control signal is supplied to gates of the inverse-conductive semiconductor switches, and a control is made so that when a discharge current rises, is maintained, or is reduced, all the gates are turned off, and the magnetic energy of the electric current can be automatically regenerated to the energy source capacitor by a diode function of the switches. Further, a large current power supply is inserted into a discharge circuit so as to replenish energy loss due to discharge, thereby enabling high-repetition discharge.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: April 5, 2011
    Assignee: MERSTech, Inc.
    Inventors: Ryuichi Shimada, Taku Takaku
  • Patent number: 7898113
    Abstract: In order to provide a pulse power supply device using regenerating magnetic energy stored in a discharge circuit to a capacitor so as to use it as next discharge energy and supplying a bipolar pulse current with high repetition, a bridge circuit is composed of four inverse-conductive semiconductor switches, a charged energy source capacitor is connected to a DC terminal of the bridge circuit, and an inductive load is connected to its AC terminal. A control signal is supplied to gates of the inverse-conductive semiconductor switches, and a control is made so that when a discharge current rises, is maintained or is reduced, all the gates are turned off, and the magnetic energy of the electric current can be automatically regenerated to the energy source capacitor by a diode function of the switches. Further, a large-current power supply is inserted into a discharge circuit so as to replenish energy loss due to discharge, thereby enabling high-repetition discharge.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: March 1, 2011
    Assignee: MERTHTech, Inc.
    Inventors: Ryuichi Shimada, Taku Takaku
  • Publication number: 20110025134
    Abstract: The invention relates to a capacitor arrangement (1) comprising at least one capacitor (2) having a first electrode (3) connected to a first conductive element (13) and a second electrode (4) connected to a second conductive element (14). The first and second conductive elements (13, 14) of the capacitors are separated by a dielectric (15). The integral capacitors are configured to each form a substantially circular-cylindrical body having a central through opening (17). By virtue of the invention, a compact capacitor arrangement is achieved, which minimizes the risk of electrical sparkovers. The invention is obtained by the introduction of four electrodes, a first and a second electrode (3, 4) being placed adjacent to the outer peripheral surface (18) of the body, whilst a third and a fourth electrode (7, 8) are placed adjacent to the central opening (17) of the body.
    Type: Application
    Filed: February 25, 2009
    Publication date: February 3, 2011
    Inventor: Fredrik Olsson
  • Patent number: 7843087
    Abstract: The present invention provides a pulse power generator using a semiconductor switch, which enables its lifespan to be significantly improved, allows for its miniaturization, and makes it possible to diversely control a high-voltage pulse output finally. According to the pulse power generator, it is possible to address and solve a difficulty in driving the semiconductor switch in series, i.e., the problems related to synchronization and insulation of a driving power supply, and to include a circuit which can cope with the generation of arc and short circuit to thereby significantly improve device protecting performance and stability of the pulse power generator.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: November 30, 2010
    Assignee: Korea Electro Technology Research Institute
    Inventors: Hong Je Ryoo, Jong Soo Kim, Geun Hie Rim, Guennadi Gussev
  • Patent number: 7817396
    Abstract: A plasma generation system includes a pulse generator having at least one switch and that is configured to convert a DC voltage to a desired high frequency, high breakdown voltage pulse sufficient to break down a high-breakdown voltage gap, wherein all pulse generator switches are solely low to medium voltage, high frequency switches, and further configured to apply the breakdown voltage to a plasma load for the generation of plasma. In one application, the plasma generation system is useful to manipulate the flow of jets and provide highly efficient acoustic noise reduction.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: October 19, 2010
    Assignee: General Electric Company
    Inventors: Fengfeng Tao, Seyed Gholamali Saddoughi, Robert Carl Murray, Abdelkrim Younsi, Steven Martens
  • Patent number: 7795758
    Abstract: The production and emission of high-energy microwave pulses are made possible by means of a device with a particularly compact design if the capacitor column (12-12) of the Marx generator (11) whose series circuit conventionally itself feeds a microwave generator with a matched antenna geometry, is now itself used—dispensing with the microwave generator and its antenna—directly as a resonator and Hertzian antenna dipole (24). Its oscillation response can be optimized by triggered spark gaps (14) for the switching of capacitors (12), and by means of plates (19) connected at the ends, in order to increase the stray capacitances.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: September 14, 2010
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventor: Geoffrey Staines
  • Publication number: 20100194208
    Abstract: A compact multi-cycle high power microwave generator and a method of using the generator to generate microwave signals is disclosed and claimed. The apparatus includes one or more charged transmission line sections. Each transmission line section includes a first conductor that is section-specific and a second conductor that is common to all of the sections. A switch is associated with each section, each switch being operatively connected to a respective one of the first conductors. The apparatus includes third, common conductor that is not charged and that is operatively connected to each of the first conductors through its respective switch. The apparatus further includes a load, with the second conductor, the third conductor, and the load being operatively connected. Thus, the number of section-specific conductors, the number of charged transmission line sections, and the number of switches are all equal. Engagement of the switches generates a multi-cycle microwave pulse.
    Type: Application
    Filed: February 1, 2010
    Publication date: August 5, 2010
    Inventor: Simon Y. London
  • Publication number: 20100156195
    Abstract: This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells.
    Type: Application
    Filed: February 9, 2010
    Publication date: June 24, 2010
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Jason Sanders, Andras Kuthi, Martin A. Gundersen, William Henry Moore
  • Publication number: 20100134776
    Abstract: A pulse power source which can perform high repetition of pulse signals by enhancing the throughput of a pulse source is provided. The pulse power source includes: a charger; an initial-stage capacitor section which is provided with a capacitor charged by the charger; and a magnetic pulse compression circuit which performs magnetic pulse compression of a pulse current generated by discharging a charge from the capacitor at the initial-stage capacitor section and, thereafter, outputs the pulse current. An exposure device which includes the pulse power source is also provided. The pulse power source includes, between the initial-stage capacitor section and the magnetic pulse compression circuit, a transistor which controls timing of discharging a charge from the initial-stage capacitor section, an inductor which constitutes a resonance circuit together with the capacitor at the initial stage capacitor section, and a diode which rectifies the pulse current.
    Type: Application
    Filed: March 26, 2008
    Publication date: June 3, 2010
    Applicant: National University Corporation Kumamoto University
    Inventors: Takashi Sakugawa, Hidenori Akiyama, Sunao Katsuki