Patents by Inventor Masaaki Nagano
Masaaki Nagano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240128882Abstract: A diode is connected between a DC power supply and switching elements, a forward direction of the diode being defined from the DC power supply to the switching elements. A relay is connected in parallel to the diode. A relay control circuit controls the relay to be turned off when an input voltage starts to be applied to a power converter apparatus, and to be turned on when a forward voltage is applied to the diode.Type: ApplicationFiled: October 12, 2023Publication date: April 18, 2024Inventors: Kohei TANINO, Masaaki NAGANO, Tomonori WATANABE
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Patent number: 11916473Abstract: This power supply device (100) is provided with a power supply unit (10), a temperature sensor (28) for measuring the internal temperature of the power supply unit (10), a calculation circuit (22) for predicting an end-point temperature from the internal temperature of the power supply unit (10) measured by the temperature sensor (28) and the slope of the internal temperature rise and estimating a surrounding temperature on the basis of the end-point temperature and the load status of the power supply unit (10); and a display circuit (23) for displaying the surrounding temperature estimated by the calculation circuit (22).Type: GrantFiled: June 5, 2019Date of Patent: February 27, 2024Assignee: OMRON CorporationInventors: Masaaki Nagano, Tomonori Watanabe
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Patent number: 11870199Abstract: A terminal protection voltage detector circuit is provided for protecting a terminal block having output terminals in a power supply apparatus. A current detector detects output currents flowing from the power supply apparatus to loads via output terminals, and a first comparator configured to compare a sum of the detected output currents with a predetermined first threshold and output a first comparison result signal when the sum of output currents is larger than or equal to the first threshold. A second comparator configured to compare a maximum value of detected output currents with a predetermined second threshold and output a second comparison result signal when the maximum value is equal to or larger than the second threshold. A current stop circuit stops a current from flowing from the power supply apparatus to the output terminals based on the first or second comparison result signal.Type: GrantFiled: June 7, 2022Date of Patent: January 9, 2024Assignee: OMRON CORPORATIONInventors: Masaaki Nagano, Tomonori Watanabe, Kohei Tanino
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Publication number: 20230314489Abstract: To provide voltage detection device capable of reducing variations and errors in detection voltage caused by influence of configuration of pattern wiring and temperature when detecting voltages applied to a plurality of resistance elements connected in parallel. Voltage detection device includes resistance unit including a plurality of resistance elements connected in parallel, differential amplifier circuit, first connection portion having two wiring portions connecting positions different from each other in one end portion of resistance unit and input terminal of differential amplifier circuit, and second connection portion having two wiring portion connecting positions different from each other in other end portion of resistance unit and input terminal of differential amplifier circuit. Voltage detection device configures to detect voltage applied to resistance unit based on voltage of output terminal of differential amplifier circuit.Type: ApplicationFiled: March 8, 2021Publication date: October 5, 2023Inventors: Masaaki NAGANO, Kohei TANINO, Kosuke SUMI, Yohei TAKASHIMA, Tomonori WATANABE, Kosuke YOSHIMARU
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Publication number: 20230128678Abstract: A power supply circuit includes a transistor having a drain connected to an input voltage, a gate, and a source; a diode; a choke coil; a capacitor; a transformer; a control circuit that provides a drive signal for turning on and off the transistor to a primary winding of the transformer based on an output voltage; an overvoltage detection circuit that outputs an overvoltage signal when the output voltage is an overvoltage; and a short circuit that short-circuits the gate and the source of the transistor in response to the overvoltage signal.Type: ApplicationFiled: December 16, 2020Publication date: April 27, 2023Applicant: OMRON CorporationInventors: Kohei TANINO, Masaaki NAGANO, Tomonori WATANABE
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Publication number: 20230044689Abstract: A terminal block attachable to a control device includes a main body including a wiring connection part to which wiring is connected, a first rotation mechanism unit arranged at a first end in a first direction of the main body, and a second rotation mechanism unit arranged at a second end in the first direction of the main body. The first rotation mechanism unit and the second rotation mechanism unit are configured that the main body is rotatable about an imaginary straight line extending along the first direction with respect to the control device. The wiring connection part is arranged at an end of the main body in a radial direction with respect to the imaginary straight line.Type: ApplicationFiled: August 3, 2022Publication date: February 9, 2023Inventors: Tomonori WATANABE, Kohei TANINO, Masahiko KUBO, Masaaki NAGANO
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Publication number: 20230010478Abstract: A power device includes a plurality of terminal blocks electrically connected to each other. Each of the plurality of terminal blocks is configured to be connectable to an external device and to be capable of supplying current to the connected external device. Each of the plurality of terminal blocks includes a current supply circuit that supplies current to the connected external device, and a current setting unit that sets a maximum current to be supplied to the external device via the current supply circuit.Type: ApplicationFiled: July 8, 2022Publication date: January 12, 2023Inventors: Masaaki NAGANO, Kohei TANINO, Tomonori WATANABE
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Publication number: 20220407247Abstract: A terminal protection voltage detector circuit is provided for protecting a terminal block having output terminals in a power supply apparatus. A current detector detects output currents flowing from the power supply apparatus to loads via output terminals, and a first comparator configured to compare a sum of the detected output currents with a predetermined first threshold and output a first comparison result signal when the sum of output currents is larger than or equal to the first threshold. A second comparator configured to compare a maximum value of detected output currents with a predetermined second threshold and output a second comparison result signal when the maximum value is equal to or larger than the second threshold. A current stop circuit stops a current from flowing from the power supply apparatus to the output terminals based on the first or second comparison result signal.Type: ApplicationFiled: June 7, 2022Publication date: December 22, 2022Inventors: Masaaki NAGANO, Tomonori WATANABE, Kohei TANINO
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Publication number: 20210302239Abstract: This power supply device (100) is provided with a power supply unit (10), a temperature sensor (28) for measuring the internal temperature of the power supply unit (10), a calculation circuit (22) for predicting an end-point temperature from the internal temperature of the power supply unit (10) measured by the temperature sensor (28) and the slope of the internal temperature rise and estimating a surrounding temperature on the basis of the end-point temperature and the load status of the power supply unit (10); and a display circuit (23) for displaying the surrounding temperature estimated by the calculation circuit (22).Type: ApplicationFiled: June 5, 2019Publication date: September 30, 2021Applicant: OMRON CorporationInventors: Masaaki NAGANO, Tomonori WATANABE
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Patent number: 11057974Abstract: A power supply device includes: an input unit; a power supply unit that generates a supply voltage from a voltage input through the input unit (10); an output unit; an LED that generates a first output in response to input of a voltage to input terminal, the LED being disposed between the input terminal—and the fuse; an LED that generates a second output in response to input of a voltage to the power supply unit through the fuse, the LED being disposed between the fuse and the power supply unit; and an LED that generates a third output in response to output from power supply unit, the LED being connected to an output terminal.Type: GrantFiled: November 19, 2018Date of Patent: July 6, 2021Assignee: OMRON CorporationInventors: Masaaki Nagano, Koji Takatori, Yasutsugu Namura
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Patent number: 11006497Abstract: A power supply device includes: an input unit configured to receive an input voltage from outside; a power supply unit configured to generate a power-supply voltage from the input voltage inputted through the input unit; an output unit including an output terminal configured to output the power-supply voltage; and a lighting circuit connected to the input unit and configured to be turned on in response to application of the input voltage. The lighting circuit is configured to vary in lighting mode depending on the input voltage.Type: GrantFiled: April 24, 2019Date of Patent: May 11, 2021Assignee: OMRON CorporationInventor: Masaaki Nagano
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Publication number: 20210068230Abstract: A power supply device includes: an input unit; a power supply unit that generates a supply voltage from a voltage input through the input unit (10); an output unit; an LED that generates a first output in response to input of a voltage to input terminal, the LED being disposed between the input terminal—and the fuse; an LED that generates a second output in response to input of a voltage to the power supply unit through the fuse, the LED being disposed between the fuse and the power supply unit; and an LED that generates a third output in response to output from power supply unit, the LED being connected to an output terminal.Type: ApplicationFiled: November 19, 2018Publication date: March 4, 2021Applicant: OMRON CorporationInventors: Masaaki NAGANO, Koji TAKATORI, Yasutsugu NAMURA
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Patent number: 10700596Abstract: A power supply circuit includes: a coil having a first end that receives an input voltage and a second end; a transistor connected to the second end of the coil; a first capacitor connected to the second end of the coil; and a surge protection circuit connected to the second end of the coil in parallel with the first capacitor. The surge protection circuit includes a diode, a second capacitor, and a resistance. The diode, the second capacitor, and the resistance are connected in series to the second end of the coil.Type: GrantFiled: July 25, 2019Date of Patent: June 30, 2020Assignee: OMRON CorporationInventors: Masaaki Nagano, Kohei Tanino
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Publication number: 20200174540Abstract: The disclosure relates to a power supply system, a method of displaying an operating state of a power supply device and a program, by which an ambient temperature of the power supply device can be estimated and an operating state of the power supply device can be displayed. The power supply system according to an embodiment may include: a power supply device that is capable of estimating the ambient temperature based on internal measurement information; and a PC that obtains the operating state of the power supply device at the ambient temperature estimated by the power supply device. The PC causes a monitor to display the obtained operating state of the power supply device in comparison with a use condition determined in advance.Type: ApplicationFiled: October 18, 2018Publication date: June 4, 2020Applicant: OMRON CorporationInventors: Koji TAKATORI, Masaaki NAGANO
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Publication number: 20200053846Abstract: A power supply device includes: an input unit configured to receive an input voltage from outside; a power supply unit configured to generate a power-supply voltage from the input voltage inputted through the input unit; an output unit including an output terminal configured to output the power-supply voltage; and a lighting circuit connected to the input unit and configured to be turned on in response to application of the input voltage. The lighting circuit is configured to vary in lighting mode depending on the input voltage.Type: ApplicationFiled: April 24, 2019Publication date: February 13, 2020Applicant: OMRON CorporationInventor: Masaaki NAGANO
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Publication number: 20200051236Abstract: A method of acquisition of a state of a power supply device and a device therefor which can improve convenience for a user are provided. A power supply device (100) includes a display part which displays a state of the inside or the surroundings thereof. A method of state acquisition by a state acquisition device (200) includes a step of acquiring an image of the power supply device (100) including at least the display part using a camera, a step of analyzing the image by a processing circuit to recognize a display state of the display part, and a step in which the processing circuit acquires information related to the state of the power supply device (100) on the basis of a predetermined relationship between the display state of the display part and the state of the power supply device.Type: ApplicationFiled: April 17, 2019Publication date: February 13, 2020Applicant: OMRON CorporationInventors: Masaaki Nagano, Yohei Takashima, Kohei Tanino
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Publication number: 20200044560Abstract: A power supply circuit includes: a coil having a first end that receives an input voltage and a second end; a transistor connected to the second end of the coil; a first capacitor connected to the second end of the coil; and a surge protection circuit connected to the second end of the coil in parallel with the first capacitor. The surge protection circuit includes a diode, a second capacitor, and a resistance. The diode, the second capacitor, and the resistance are connected in series to the second end of the coil.Type: ApplicationFiled: July 25, 2019Publication date: February 6, 2020Applicant: OMRON CorporationInventors: Masaaki NAGANO, Kohei TANINO
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Publication number: 20200044575Abstract: An LLC type switching power supply device in which a burst operation hardly occurs at the time of a light load is provided. A switching power supply device includes an LLC resonant converter. The LLC resonant converter includes a transformer, a first capacitor connected to a primary winding of the transformer, a switching circuit which controls power transmission to the transformer and the first capacitor, a rectification circuit connected to a secondary winding of the transformer, a second capacitor connected to the rectification circuit, and an output terminal connected to the rectification circuit and the second capacitor. The switching power supply device further includes a stabilizing circuit which is connected to the output terminal and consumes power at the time of a light load of the LLC resonant converter.Type: ApplicationFiled: April 17, 2019Publication date: February 6, 2020Applicant: OMRON CorporationInventors: Masaaki NAGANO, Kohei TANINO
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Patent number: D876349Type: GrantFiled: November 8, 2017Date of Patent: February 25, 2020Assignee: OMRON CorporationInventors: Masaaki Nagano, Masahiko Kubo, Tadahiko Ogawa, Tomonori Watanabe, Kei Okada, Masayuki Ueuchi, Takema Sato, Tomoki Konno, Yuki Tsuruguchi, Michihiro Yamamoto, Masato Shimizu, Hiroki Niwa
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Patent number: D879036Type: GrantFiled: November 9, 2017Date of Patent: March 24, 2020Assignee: OMRON CorporationInventors: Masaaki Nagano, Tadahiko Ogawa, Masahiko Kubo, Yuki Tsuruguchi, Hiroki Niwa, Masayuki Ueuchi, Tomonori Watanabe, Tomoki Konno, Takema Sato, Masato Shimizu, Kei Okada, Michihiro Yamamoto