Including Semiconductor Means (e.g., Transistor) Patents (Class 219/501)
  • Patent number: 10820715
    Abstract: This disclosure relates to an auto run mode for initiating a heating cycle of a heated bedding product. A heated bedding product can include a bedding product body comprising a heating element and a controller electrically connected to the heating element. The controller can include a processing circuit, such as a microcontroller, that is configured to operate in an auto run mode in which a heating cycle of the heating element is automatically initiated in response to alternating current power being provided to the controller.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: November 3, 2020
    Assignee: E & E CO., LTD.
    Inventors: Michael Lightsey, Mark Castracane
  • Patent number: 10804694
    Abstract: An embodiment of the present disclosure discloses an over-temperature protection circuitry and a driving method. The circuit includes a source circuit, a comparator circuit and an output circuit, wherein the comparator circuit includes a thermistor, a first resistor and a comparator, the source circuit is connected to a first input terminal of the comparator via the thermistor and is connected to a second input terminal of the comparator via the first resistor; and the comparator circuit is configured to compare a first signal from the first input terminal with a second signal from the second input terminal, and output a control signal according to a comparison result, the control signal is an over-temperature control signal in the case that the comparison result indicates that the temperature is greater than or equal to a protection threshold, and the output circuit is configured to output an disenabling signal.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: October 13, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ran Jiang, Hai Kang, Donghui Wang, Lei Hua, Zhen Tang, Weiwei Pan, Hongxun Zhang
  • Patent number: 10797485
    Abstract: In a conventional power supply system, it was difficult to quickly activate a motor load or the like after performing switching to an isolated operation.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: October 6, 2020
    Assignee: TABUCHI ELECTRIC CO., LTD.
    Inventors: Yuji Yamauchi, Hiroshi Asano, Masataka Shintani, Hirofumi Konishi
  • Patent number: 10477621
    Abstract: A device (1) for controlling an electrical heating circuit (2) comprising a number N of heating elements (21-23) connected in parallel, comprises, according to the invention: N electronic switches (T1-T3), each able to be connected in series with one of the N heating elements (21-23); a module (10) able to receive a power setpoint in the form of a control signal (PWM) with duty ratio varying as a function of power; means (12) for extracting a mean value (formula (I)) of the control signal (PWM) received; and P comparators (C1-C3), the integer P being less than or equal to N, which are able to compare the mean value (formula (I)) extracted with P distinct threshold values (Ref1-Ref3) and to generate P comparison signals (S1-S3), each comparison signal serving to control a toggling of the electronic switch (T1-T3) associated with at least one heating element into the open or closed position.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: November 12, 2019
    Assignee: Valeo Systemes Thermiques
    Inventors: Laurent Tellier, Bertrand Puzenat
  • Patent number: 10340162
    Abstract: A thermal system includes multiple thermal elements, multiple power lines, and a control system. Each of the thermal elements define a resistor and a current limiting device, and the thermal elements include at least a first subset of parallel thermal elements and at least a second subset of parallel thermal elements. The current limiting devices in a given subset of parallel thermal elements have opposite polarity from each other. The multiple power lines are connected to the plurality of thermal elements. The power lines are configured in pairs for providing power to the first subset and the second subset of parallel thermal elements. The control system is configured to selectively apply power to the first subset and the second subset of parallel thermal elements by way of the power lines.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 2, 2019
    Assignee: Watlow Electric Manufacturing Company
    Inventors: Cal T. Swanson, Louis P. Steinhauser
  • Patent number: 10097040
    Abstract: A thermal barrier for a wireless power transfer system comprises a first surface area (807) for coupling to a power receiver (111) to be powered by a first electromagnetic signal and a second surface area (805) for coupling to a power transmitter (101) providing a second electromagnetic signal. The thermal barrier (801) further comprises a power repeater (803) with a resonance circuit including an inductor and a capacitor. The power repeater (803) is arranged to generate the first electromagnetic signal by concentrating energy of the second electromagnetic signal towards the first surface area (807). The thermal barrier may provide thermal protection of the power transmitter (101) without unacceptable impact on the power transfer operation.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: October 9, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Andries Van Wageningen, Wilhelmus Gerardus Maria Ettes, Antonius Adriaan Maria Staring, Johannes Gerardus Fredericus Kablau
  • Patent number: 9771270
    Abstract: A method and system of igniting one or more filaments for silicon production includes applying an output voltage to the one or more filaments using a transformer connected with the one or more filaments. In addition, the method includes supplying, in combination with the application of the output voltage, a current to a primary winding of the transformer via a choke to limit the current to a first predetermined current threshold range. The combination of the supplied current and applied output voltage allows a predetermined output range to be generated from a power supply device initially required to ignite the one or more filaments.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: September 26, 2017
    Assignee: GTAT Corporation
    Inventors: Michael Harro Liese, Wilfried Vollmar, Casey Michael Wornath
  • Patent number: 9683749
    Abstract: A line voltage thermostat having a multiple heatsink switch. A total switch may have a semiconductor switch mounted on each heatsink of the multiple heatsink switch. The semiconductor switches of the respective heatsinks may be connected in parallel to represent the total switch. Each of the two or more heatsinks, having a semiconductor switch for switching, and in total conveying the same power as one equivalent switch with one total heatsink, may have higher maximum operating temperatures and higher thermal resistances than twice the thermal resistance of the one total heatsink. The two or more heatsinks may be situated within a housing of the line voltage thermostat, and be easier to distribute in the housing to achieve an efficient layout of a display and control buttons for the thermostat.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: June 20, 2017
    Assignee: Honeywell International Inc.
    Inventors: Lionel Bravard, Daniel Landry, Daniel Tousignant, Evelyne Tremblay, Joel McNabb-Baltar
  • Patent number: 9577637
    Abstract: A Physically Unclonable Function circuit may include precharge circuitry that precharges an output. The precharge circuitry may include transistors of a first type such as N-type or P-type. Circuitry having only transistors of a second, different type may be coupled to the output. The circuitry may produce a signal at the output based on variations between the transistors of the second type. The circuitry may include first and second circuits such as first and second transistors of the second type that are cross-coupled. While the circuitry is producing the signal at the output, the precharge circuitry or any transistors not of the second type may be disabled or electrically disconnected from the output. In this way, the stability over time of the Physically Unclonable Function circuit may be improved, because only variations associated with transistors of the second type may be used in producing the signal.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: February 21, 2017
    Assignee: Altera Corporation
    Inventor: Bruce B. Pedersen
  • Patent number: 9528723
    Abstract: A system includes, in one example, a first heater device, a second heater device, and a temperature sensor, each disposed within a fluid flow. The system further includes a controller communicatively coupled to the first heater device, the second heater device, and the temperature sensor. The controller is configured to receive, from the temperature sensor, an indication of a measured temperature of the fluid flow. The controller is further configured to control, based on a difference between the measured temperature of the fluid flow and a target temperature, operation of the first heater device via a first pulse width modulation signal and operation of the second heater device via a second pulse width modulation signal.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: December 27, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Andrew Semyanko, William Tice, Gregory R. Leaper
  • Patent number: 9492826
    Abstract: The invention relates to methods and devices for control of an integrated thin-film device with a plurality of microfluidic channels. In one embodiment, the microfluidic device includes a microfluidic chip comprising a first zone having a plurality of microfluidic channels and a second zone having a plurality of microfluidic channels, wherein the microfluidic channels in the first and second zones are in fluid communication. The microfluidic device further comprising a thin-film heater in thermal communication with each of the microfluidic channels in the first and second zones. The microfluidic device also includes a control system configured to independently control the temperature of each of the thin-film heaters using pulse width modulation (PWM) control signals that are optimized for each of the thin-film heaters.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 15, 2016
    Assignee: Canon U.S. Life Sciences, Inc.
    Inventors: Takayoshi Hanagata, Hiroshi Inoue, Gregory A. Dale, Kenton C. Hasson
  • Patent number: 9482462
    Abstract: Systems and methods for providing two energy level settings for a refrigerator hot water heater are provided. An exemplary refrigerator includes a refrigeration system that includes an evaporator. The refrigerator includes a defrost assembly for defrosting one or more of the evaporator or a freezer compartment. The refrigerator includes a water dispensing assembly that includes a heating element for heating a volume of water. The refrigerator includes a controller configured to operate the heating element at a first energy level when the defrost assembly is not operating and to operate the heating element at a second energy level when the defrost assembly is operating. An exemplary method includes detecting that the refrigerator is performing an energy critical task. The method includes enabling a reduced consumption of electrical power by a heating element included in a water dispensing assembly of the refrigerator when the refrigerator is performing the energy critical task.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: November 1, 2016
    Assignee: Haier US Appliance Solutions, Inc.
    Inventor: Robert Charles Beilfuss
  • Patent number: 9393379
    Abstract: The present invention provides for an improved method of determining a water out condition in a humidified gases supply apparatus. The method includes a two step process including a primary determination of a water out condition and a secondary determination of a water out condition. This primary determination is made during observation of the normal operation of the apparatus. During the secondary determination the method takes temporary control over the humidifying part of the apparatus. The secondary determination confirms or contradicts the primary determination.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: July 19, 2016
    Assignee: Fisher & Paykel Healthcare Limited
    Inventors: Dean Antony Barker, Jack Che-Wei Hsu, Jae Chul Han
  • Patent number: 9343997
    Abstract: A two-wire load control device (such as, a dimmer switch) for controlling power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main terminal and a gate terminal of the thyristor, and a control circuit. The control circuit is configured to control the gate coupling circuit to conduct a pulse of current through the gate terminal to render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct at least one other pulse of current after the firing time during the half cycle. The load control device is further arranged to conduct current through the electrical load if the thyristor becomes non-conductive and remains non-conductive during the half-cycle.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: May 17, 2016
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventors: Robert C. Newman, Jr., Chris J. Salvestrini, Matthew V. Harte
  • Patent number: 9343998
    Abstract: A two-wire load control device (such as, a dimmer switch) for controlling power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a first circuit coupled between a first main terminal and a gate terminal of the thyristor to conduct current through the gate terminal, a second circuit coupled between the first main terminal and a second main terminal of the thyristor to conduct current through the load when the thyristor is non-conductive, and a control circuit configured to individually control the first and second circuits. The control circuit renders the first circuit conductive to conduct a pulse of current through the gate terminal to render the thyristor conductive at a firing time, and allows the first circuit to conduct at least one other pulse of current through the gate terminal after the firing time.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: May 17, 2016
    Assignee: LUTRON ELECTRONICS CO., INC.
    Inventors: Robert C. Newman, Jr., Christopher J. Salvestrini, Matthew V. Harte
  • Patent number: 9235274
    Abstract: The present invention is directed to a low-profile or ultra-thin navigational pointing device incorporating haptic feedback related to the hardware designs, and sensor optimization relative to the functionally of joysticks, computer mice, gaming equipment, cell phones, personal digital assistants, telecommunications equipment, entertainment equipment, and other electronic pointing devices requiring height profiles of 5 mm or less. In one embodiment, a device in accordance with the present invention includes a support structure component, a read component, a sensor component, and a capture enclosure component. The read component is coupled to the support structure, and the sensor component is coupled to the capture enclosure where it is positioned in close proximity to the read component by capture enclosure.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: January 12, 2016
    Assignee: APPLE INC.
    Inventors: Brian St. Jacques, Michael Rogers
  • Patent number: 9213342
    Abstract: A control system includes a remote temperature sensor configured to wirelessly communicate a signal indicative of a space temperature, and a return air temperature sensor configured to output a signal indicative of a temperature of return airflow within an air conditioning/heating unit. The system further includes a controller segregated from the space that is responsive to the signals from the sensors for determining a working sensed temperature based upon a temperature value associated with the return air sensor and at least one temperature value associated with at least one remote temperature sensor. The controller is configured to compare the working sensed temperature to a set-point temperature and responsively generate a command signal to activate the air conditioning or heating unit to control temperature relative to a set-point. The controller controls the air conditioning/heating unit at all times based upon the temperature value associated with the return air sensor.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: December 15, 2015
    Assignee: Emerson Electric Co.
    Inventors: Willis K. Drake, William C. Leise, Rishi Siravuri, Marc P. N. Rody
  • Patent number: 9040880
    Abstract: An electronic circuit control arrangement to sustain water discharging from an instantaneous hot water heater at a set temperature or range having a proportional water temperature signal derived from a sensing arrangement in communication with water inlet and outlet ports so as to sense the respective temperatures at each port to provide a comparatively measurable proportional difference between the inlet and outlet temperatures set against referenced parameters, including a comparator that acts as an operable control of a switch adapted to couple and de-couple an alternating current power source to the heating element through a duty cycle of highs and lows to provide a rate to generate and maintain the appropriate coupling and/or de-coupling of the alternating current power source to and from the heating element to achieve the desired referenced temperature and/or range.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: May 26, 2015
    Assignee: Hendon Semiconductors Pty Ltd.
    Inventors: Mark Potter, Justin Langman
  • Patent number: 8952299
    Abstract: A dual resistance heater for a phase change material region is formed by depositing a resistive material. The heater material is then exposed to an implantation or plasma which increases the resistance of the surface of the heater material relative to the remainder of the heater material. As a result, the portion of the heater material approximate to the phase change material region is a highly effective heater because of its high resistance, but the bulk of the heater material is not as resistive and, thus, does not increase the voltage drop and the current usage of the device.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: February 10, 2015
    Assignee: Micron Technology, Inc.
    Inventors: Yudong Kim, Ilya V Karpov, Charles C. Kuo, Greg Atwood, Maria Santina Marangon, Tyler A. Lowrey
  • Patent number: 8927909
    Abstract: An integrated circuit is provided having an active circuit. A heating element is adjacent to the active circuit and configured to heat the active circuit. A temperature sensor is also adjacent to the active circuit and configured to measure a temperature of the active circuit. A temperature controller is coupled to the active circuit and configured to receive a temperature signal from the temperature sensor. The temperature controller operates the heating element to heat the active circuit to maintain the temperature of the active circuit in a selected temperature range.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: January 6, 2015
    Assignees: STMicroelectronics, Inc., STMicroelectronics Asia Pacific Pte. Ltd.
    Inventors: Olivier Le Neel, Fuchao Wang, Ravi Shankar
  • Patent number: 8912468
    Abstract: A zero-crossing detector circuit includes: a first capacitor including a first electrode configured to connect to one end of an AC power supply and a second electrode; a second capacitor including a first electrode configured to connect to the other end of the AC power supply and a second electrode; a current path, which is connected in series between the second electrode of the first capacitor and the second electrode of the second capacitor, and which is connected to a reference potential, and which generates a second-electrode-side voltage when the AC current passes through the current path; a signal converting circuit, which is connected to the AC power supply to receive the second-electrode-side voltage and then converts the second-electrode-side voltage into a pulse signal; and a detecting unit, which detects a pulse period of the pulse signal, which and detects zero-crossing points by using the pulse period.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: December 16, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Katsumi Inukai
  • Patent number: 8909033
    Abstract: A method is provided for interconnecting a single electrical heating element of a hot water heater to first and second AC electrical power sources. Typically, these first and second AC electrical power sources include a utility provided electrical power source and a renewable power source that generates AC power from DC power. The method includes operating a controller that selectively connects and disconnects the first and second power sources. If sufficient electrical power is available from the renewable power source, the utility provided electrical power source may be disconnected to preferentially utilize renewable energy.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: December 9, 2014
    Inventor: David Kreutzman
  • Patent number: 8890574
    Abstract: Provided are a MIT device self-heating preventive-circuit that can solve a self-heating problem of a MIT device and a method of manufacturing a MIT device self-heating preventive-circuit integrated device. The MIT device self-heating preventive-circuit includes a MIT device that generates an abrupt MIT at a temperature equal to or greater than a critical temperature and is connected to a current driving device to control the flow of current in the current driving device, a transistor that is connected to the MIT device to control the self-heating of the MIT device after generating the MIT in the MIT device, and a resistor connected to the MIT device and the transistor.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: November 18, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Tak Kim, Bong-Jun Kim, Sun-Jin Yun, Dae-Yong Kim
  • Patent number: 8822889
    Abstract: A temperature control system includes a temperature control circuit having a plurality of predetermined temperature values, a switch control circuit and a heating control circuit. The temperature control circuit outputs control signals according to the plurality of predetermined temperature values. The switch control circuit turns on according to the control signals and outputs the DC voltage to the heating control circuit which begins to get hot. The temperature control circuit detects a temperature of the heating control circuit from time to time and turns off the switch control circuit when the temperature of the heating control circuit is equal to a selected predetermined temperature.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: September 2, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Ling-Yu Xie, Xing-Ping Xie
  • Patent number: 8809747
    Abstract: A method of operating a heating plate for a substrate support assembly used to support a semiconductor substrate in a semiconductor processing apparatus, wherein the heating plate comprises power supply lines and power return lines and respective heater zone connected between every pair of power supply line and power return line. The method reduces maximum currents carried by the power supply lines and power return lines by temporally spreading current pulses for powering the heater zones.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: August 19, 2014
    Assignee: Lam Research Corporation
    Inventors: John Pease, Neil Benjamin
  • Patent number: 8796594
    Abstract: A semiconductor manufacturing equipment is provided herein. The semiconductor manufacturing equipment includes a heater element configured to heat a wafer, a first connection part and a second connection part integrated with the heater element, a first electrode electrically contacted with and fixed to the first connection part on a first surface of the first electrode, and a second electrode electrically contacted with and fixed to the second connection part on a second surface of the second electrode. The second surface is perpendicular to the direction of the first surface, and the heater element produces heat by applying a voltage between the first electrode and the second electrode.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: August 5, 2014
    Assignee: NuFlare Technology, Inc.
    Inventors: Hideki Arai, Satoshi Inada, Yoshikazu Moriyama, Noriki Juumatsu
  • Patent number: 8692165
    Abstract: A beverage apparatus is provided for heating a liquid and is operable either by foreign or domestic voltages. The apparatus may have a heating element that couples directly to the voltage source, regardless of whether the voltage source is foreign or domestic. The apparatus also may have a power supply that couples directly to the voltage source, regardless of whether the voltage source is foreign or domestic. The power supply outputs a DC voltage that may be coupled to various other components of the apparatus either directly or after subsequent processing.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: April 8, 2014
    Assignee: Bunn-O-Matic Corporation
    Inventors: Victor D. Geockner, Kevin G. Lowe
  • Patent number: 8692167
    Abstract: A medical device having a heater with at least one heating element which has mains voltage applied to it by a heating control unit. The heating control unit includes a monitoring arrangement and a switching arrangement. The monitoring arrangement can recognize the zero crossings of the mains voltage, and the switching arrangement can switch the at least one heating element on or off in the zero crossing. The heating control unit controls the power of the heating by switching on and off of one or more half cycles of the mains AC voltage.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: April 8, 2014
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Frank Hedmann, Sven Sebesta, Ulrich Wernicke
  • Patent number: 8680442
    Abstract: Certain embodiments of the present invention provide an electrical outlet including a power output adapted to provide electricity to an electrically coupled device, a switch adapted to activate and deactivate the power output, a temperature sensor adapted to detect a temperature, and a control unit in communication with the switch and the temperature sensor. The control unit is adapted to control the power output using the switch based at least in part on the temperature detected by the temperature sensor.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: March 25, 2014
    Assignee: Allied Precision Industries Inc.
    Inventors: Thomas K. Reusche, Philip E. Chumbley, James R. McHugh
  • Patent number: 8653420
    Abstract: A temperature control circuit of an oven controlled crystal oscillator (OCXO) is provided. A first and a second digital potentiometer are correspondingly arranged in a bridge circuit which outputs a voltage to an input terminal of a differential amplifier (OPAMP), wherein the resistance value of the first digital potentiometer is adjustable so as to adjust the temperature of the oven to the peak temperature of the crystal resonator, and the resistance value of the second digital potentiometer is adjustable so as to cancel the temperature gradient of the first digital potentiometer. In the temperature control circuit of OCXO, the heat generation of the heater resistor is controlled by the power transistor based on the control voltage from the differential amplifier.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: February 18, 2014
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventor: Junichi Arai
  • Patent number: 8618449
    Abstract: A method of controlling a phase of an alternating current (AC) power having an AC voltage waveform having a predetermined cycle includes counting a number of times a zero crossing signal has been generated, the zero crossing signal being generated whenever a level of the AC voltage waveform becomes “0”; calculating a half cycle of the AC voltage waveform based on times at which the counted number of times the zero crossing signal has been generated changes; detecting phases that divide an area surrounded by a waveform corresponding to the half cycle of the AC voltage waveform into a predetermined number of equal areas; and generating control pulse signals based on the detected phases.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Se-joong Kim
  • Patent number: 8598494
    Abstract: A method for controlling power supply to the liquid contents of a cooking vessel or the like, particularly for controlling the electrical power supply in an induction heating system, wherein a predetermined thermodynamic state is detected and the user is alerted, comprises maintaining a predetermined high power condition after reaching the predetermined thermodynamic state for a predetermined time and then reducing the power supply to a predetermined level.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: December 3, 2013
    Assignee: Whirlpool Corporation
    Inventors: Gianpiero Santacatterina, Jurij Paderno, Francesco Del Bello
  • Patent number: 8587224
    Abstract: Provided are a variable field effect transistor (FET) designed to suppress a reduction of current between a source and a drain due to heat while decreasing a temperature of the FET, and an electrical and electronic apparatus including the variable gate FET. The variable gate FET includes a FET and a gate control device that is attached to a surface or a heat-generating portion of the FET and is connected to a gate terminal of the FET so as to vary a voltage of the gate terminal. A channel current between the source and drain is controlled by the gate control device that varies the voltage of the gate terminal when the temperature of the FET increases above a predetermined temperature.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 19, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Tak Kim, Bongjun Kim
  • Patent number: 8563903
    Abstract: Provided are a method and circuit for controlling heat generation of a power transistor, in which the power transistor can be protected by preventing heat generation of the power transistor by using a metal-insulator transition (MIT) device that can function as a fuse and can be semi-permanently used.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: October 22, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hyun-Tak Kim, Yong-Wook Lee, Bong-Jun Kim, Sun-Jin Yun
  • Patent number: 8563904
    Abstract: A heated eyelash curler comprises a curling head portion having an arcuate top surface on one end and a protection case on the other end. The protection case serves as a handle and also encloses the power source. A heating element is laid on the arcuate top surface caged inside a plurality of bridges or protected between protruding comblike spikes. The curler includes a pigmented silicone piece which changes in color corresponding to the temperature of the heating element as indicator. The heating element comprises a conducting wire lined or coated with a high temperature insulation arranged in zigzag configuration inserted into a conducting tube. The circuitry includes a converter for boosting the voltage of the power source which hastens the rise in temperature of the heating element and this in combination with the heating element having the conducting wire in zigzag configuration, provide a more stable and even heating.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: October 22, 2013
    Inventor: Yong Hoon Cho
  • Patent number: 8530800
    Abstract: A heater control device includes a temperature detector that detects a temperature of a heated object heated by a heater; an alternating-current power supply for applying an alternating current voltage to the heater; a turn-on ratio decision unit that determines a turn-on ratio of the heater based on the temperature and a target temperature; a turn-on pattern decision unit that determines a partial turn-on pattern, as the turn-on pattern of the heater, which is a pattern of a turn-on ratio higher than the determined turn-on ratio in terms of a control-period, and to which a partial turn-on instead of a full turn-on is allocated on a half-wavelength basis of the alternating current voltage within the control period based on the turn-on ratio of the heater; and a turn-on controller that controls turn-on of the heater based on the determined turn-on pattern.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: September 10, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Hiroshi Adachi, Eiji Nemoto, Takuma Kasai, Kiriko Chosokabe, Norikazu Okada
  • Patent number: 8501599
    Abstract: A substrate processing apparatus has: a process chamber in which a substrate is processed; a heating device that optically heats the substrate accommodated in the process chamber from an outer periphery side of the substrate; a cooling device that cools the outer periphery side of the substrate by flowing a fluid in a vicinity of an outer periphery of the substrate optically heated by the heating device; a temperature detection portion that detects a temperature inside the process chamber; and a heating control portion that controls the heating device and the cooling device in such a manner so as to provide a temperature difference between a center portion of the substrate and an end portion of the substrate while maintaining a temperature at the center portion at a pre-determined temperature according to the temperature detected by the temperature detection portion.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: August 6, 2013
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Masaaki Ueno, Masakazu Shimada, Takeo Hanashima, Haruo Morikawa, Akira Hayashida
  • Patent number: 8487221
    Abstract: A portable combined heating and lighting unit comprising a first element and a second element for generating thermal or light energy, and a component to convert thermal or light energy into electricity. The first element generates thermal or light energy from combustion of fuel. The second element generates thermal or light energy from electricity.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: July 16, 2013
    Assignee: Enerco Group, Inc.
    Inventors: Brian S. Vandrak, Donald C. Haney
  • Patent number: 8467668
    Abstract: An infrared, room heater system for installation in a wall or on a floor. An electric fan assembly draws room air into a housing, then through three parallel, air transit channels where the air is heated by infrared radiation within and about a heat exchanger assembly, and then back out into the room. One or more ceramic heating elements attached to a first copper plate emit infrared radiation when electrically energized. The first copper plate lies adjacent to, but spaced away from, a second copper plate such that radiation emitted from the heating elements reflects back and forth between the plates. Room air passed between the copper plates is heated by heat radiation concentrated between the plates, thereby achieving both energy and space efficiency.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: June 18, 2013
    Assignee: Acepower Logistics, Inc.
    Inventors: Bruce R. Searle, Alexander Anderson
  • Publication number: 20130126516
    Abstract: An electronic circuit control arrangement to sustain water discharging from an instantaneous hot water heater at a set temperature or range having a proportional water temperature signal derived from a sensing arrangement in communication with water inlet and outlet ports so as to sense the respective temperatures at each port to provide a comparatively measurable proportional difference between the inlet and outlet temperatures set against referenced parameters, including a comparator that acts as an operable control of a switch adapted to couple and de-couple an alternating current power source to the heating element through a duty cycle of highs and lows to provide a rate to generate and maintain the appropriate coupling and/or de-coupling of the alternating current power source to and from the heating element to achieve the desired referenced temperature and/or range.
    Type: Application
    Filed: July 8, 2011
    Publication date: May 23, 2013
    Applicant: HENDON SEMICONDUCTORS PTY LTD
    Inventors: Mark Potter, Justin Langman
  • Patent number: 8420987
    Abstract: Provided are a thermistor with 3 terminals, a thermistor-transistor including the thermistor, a circuit for controlling heat of a power transistor using the thermistor-transistor, and a power system including the circuit. The circuit includes: a thermistor-transistor which comprises a thermistor having a resistance decreasing with an increase in temperature and a control transistor connected to the thermistor; and at least one power transistor which is connected to a driving device to control a supply of power to the driving device, wherein the thermistor-transistor is adhered to one of a surface and a heat-emitting part of the at least one power transistor and is connected to one of a base, a gate, a collector, and a drain of the at least one power transistor to decrease or block a current flowing in the at least one power transistor when the temperature of the at least one power transistor rises, so as to prevent the power transistor from heating up.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: April 16, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Bongjun Kim, Giwan Seo, Hyun Tak Kim
  • Patent number: 8395095
    Abstract: An electrothermal transfer device includes a substrate, a plurality of electrothermal components and a heating circuit. The electrothermal components are disposed on a surface of the substrate and arranged in a pattern. The heating circuit is electrically connected to the electrothermal components. In an electrothermal transfer method, at first, a transfer substrate is disposed on a workpiece substrate. Then, the electrothermal transfer device is disposed on the transfer substrate so that the electrothermal components contact with the transfer substrate. Thereafter, the heating circuit is used to heat the electrothermal transfer components so that the transfer substrate is heated to be transferred to the workpiece substrate. The electrothermal transfer device and the electrothermal transfer method can reduce cost.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: March 12, 2013
    Assignee: E Ink Holdings Inc.
    Inventors: Chia-Chun Yeh, Yao-Chou Tsai, Henry Wang, Sung-Hui Huang
  • Patent number: 8383993
    Abstract: A temperature control device is disclosed that includes a heating wire being connected to an alternating current power source though a SCR, a sensing wire being disposed parallel to the heating wire, a thermo-sensitive resin insulating the heating wire and the sensing wire from each other and changing its impedance according to a change in temperature, and a temperature sensing unit outputting a temperature control signal to turn the SCR on or off according to a change in electric current flowing through the thermo-sensitive resin, in which the SCR is turned on or off by a sensing unit diode. The heating wire is heated by a heating current that flows in a heating cycle only, in which a forward voltage is formed in the SCR, and the sensing wire conducts a sensing current that flows in a sensing cycle only, in which a reverse voltage is formed in the SCR.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: February 26, 2013
    Assignee: Bokuk Electronics
    Inventors: Min-Ja Kim, Byung-Dong Kim, Chang-kyu Moon, Jung-Moo Kim
  • Patent number: 8378271
    Abstract: A method and system for inducing augmented levels of heat dissipation by exploiting quiescent IC leakage currents to control the temperature in high power devices. A heat control and temperature monitoring system (HCTMS) utilizes a thermal sensor to sense the junction temperature of a component, which becomes self-heated due to the quiescent leakage current inherent to the component upon the application of power to the component. By increasing the voltage level of the power source, this quiescent self-heating property is augmented, which serves to accelerate the preheating of the device, until the temperature rises above the minimum specified operating temperature of the component. The system is then reliably initialized by applying full system power and triggering a defined initialization sequence/procedure.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: February 19, 2013
    Assignee: International Business Machines Corporation
    Inventors: Gary E. O'Neil, Michael E. Stopford, James B. Tate
  • Patent number: 8330084
    Abstract: A temperature-control circuit of a heating line and a temperature-control method thereof are disclosed. The method comprises steps of: outputting a forward square-wave signal by a first forward square-wave signal generation circuit; outputting a reverse square-wave signal by a reverse square-wave signal generation circuit; and outputting a varied forward square-wave signal by a second forward square-wave signal generation circuit. Above square-wave signal generation circuits are respectively connected with an AND gate. When the input square-wave signals are simultaneously logic high, a switch is triggered by a trigger circuit to heat the heating wire.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: December 11, 2012
    Inventor: Ching-Chuan Wang
  • Patent number: 8286369
    Abstract: A device for determining the conductance of laundry in a drier. The device comprises at least two electrodes and means for dissipating heat from at least one part of at least one of said electrodes. The invention further relates to a drier comprising at least one area for receiving laundry and at least two electrodes for measuring the conductance of the laundry, at least one of the electrodes at least partly bordering said receiving area. Means for cooling at least one part of at least one of the electrodes are also provided inside the drier. Also disclosed is a method for preventing the formation of layers on electrodes used for measuring conductance in a drier.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 16, 2012
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Lothar Dittmer, Harald Moschütz, Thomas Nawrot, Andreas Ziemann
  • Patent number: 8283609
    Abstract: An on die thermal sensor in a semiconductor memory device includes: a reference voltage generating unit for generating a band gap voltage and generating a reference voltage by using the base band gap voltage; a voltage amplifying unit for outputting a temperature voltage by amplifying the band gap voltage; and a temperature information code generating unit for generating a temperature information code corresponding to a voltage level of the temperature voltage, wherein voltage variation of the temperature voltage is amplified as much as a preset amplifying value and a maximum voltage level of the temperature voltage is maintained lower than that of a power supply voltage used in the semiconductor memory device.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: October 9, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Chun-Seok Jeong
  • Patent number: 8274021
    Abstract: The invention is an integrated temperature regulator that can be fabricated using conventional semiconductor processing technology. The integrated temperature regulator can include a reaction chamber, for example fabricated from PDMS, in which chemical or biochemical reactions of interest can be carried out. The temperature regular can also be used to regulate the temperature of some circuits, e.g. an effective-inductance-change based magnetic particle sensor, to achieve a stable operation performance, such as an improved sensitivity. The integrated temperature regulator includes as subcomponents a temperature sensing circuit that receives a thermal signal from the vicinity of the reaction chamber, a temperature reference circuit, and a temperature control circuit that controls a heater based at least in part on the difference between the sensed temperature and the reference temperature. The various subcomponents can be programmable.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: September 25, 2012
    Assignee: California Institute of Technology
    Inventors: Hua Wang, Seyed Ali Hajimiri
  • Patent number: 8263912
    Abstract: A PWM driver for driving an electric device by a PWM signal includes an ECU that provides a command signal, first circuit that provides a carrier signal of a triangular shape having a preset frequency, a second circuit that forms a PWM signal having a duty ratio formed based on the carrier signal and the command signal and an output circuit that drives an output device. The second circuit includes a duty ratio limiting circuit that limits the duty ratio of the PWM signal to a range between a first duty ratio and a second duty ratio to prevent the wave shape of the PWM signal from becoming a shape of an impulse.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: September 11, 2012
    Assignee: DENSO CORPORATION
    Inventor: Hideo Watanabe
  • Patent number: 8253079
    Abstract: A temperature-control circuit of a heating line and a temperature-control method thereof are disclosed. The method comprises steps of: outputting a forward square-wave signal by a first forward square-wave signal generation circuit; outputting a reverse square-wave signal by a reverse square-wave signal generation circuit; and outputting a varied forward square-wave signal by a second forward square-wave signal generation circuit. Above square-wave signal generation circuits are respectively connected with an AND gate. When the input square-wave signals are simultaneously logic high, a switch is triggered by a trigger circuit to heat the heating wire.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: August 28, 2012
    Inventor: Ching-Chuan Wang