Abstract: An offset of an output voltage of a magnetic sensor caused by an external magnetic field is removed. A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor that is arranged at a predetermined mechanical angle with respect to the first magnetic sensor and detects the rotational position of the rotor; a signal amplifier that amplifies a difference between a first signal which is a signal output from the first magnetic sensor and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generator that converts an output signal of the signal amplifier into a pulse signal.

Abstract: An offset of an output voltage of a magnetic sensor caused by an external magnetic field is removed. A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor arranged at a position shifted by ?/N in a rotation direction of the rotor with respect to the first magnetic sensor when the number of pole pairs is N; a signal amplifier that amplifies a difference between a first signal which is a signal output from the first magnetic sensor and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generation unit that converts an output signal of the signal amplifier into a pulse signal.

Abstract: Proposed is a drive circuit including: a driving NMOS transistor having a source set to a reference potential and a driving PMOS transistor having a source set to a first potential, the driving NMOS transistor and the driving PMOS transistor having a mutually common drain connected to a load; a first bipolar transistor configured to control on/off of the driving PMOS transistor; a first switching element that causes conduction or non-conduction between a gate and the source of the driving NMOS transistor; and a second switching element that causes conduction or non-conduction between a gate and the source of the driving PMOS transistor.

Abstract: A motor according to a disclosed embodiment includes: a plurality of magnetic sensors that output sine wave signals having a certain phase difference in order in accordance with rotation of a rotor; a signal amplifier that amplifies a difference between an output signal of each of the plurality of magnetic sensors and an average signal that is an average of the output signals of the plurality of magnetic sensors; and a pulse signal generation unit that converts an output signal of the signal amplifier into a pulse signal.

Abstract: A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor arranged at a rotation center of the rotor; a signal amplifier that amplifies a difference between a first signal, which is a signal output from the first magnetic sensor, and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generation unit that converts an output signal of the signal amplifier into a pulse signal.

Abstract: An arithmetic circuit includes an auto-zero amplification circuit that compensates an offset of an entered differential signal, and a comparator circuit that converts an output signal from the auto-zero amplification circuit to a digital signal. The auto-zero amplification circuit and comparator circuit are provided in the same package.

Abstract: A signal processing circuit amplifies a signal of a magnetic sensor that changes according to the magnitude of a magnetic force. The signal of the magnetic sensor is a pair of signals inverted from each other with respect to a reference voltage. The signal processing circuit includes: a high-pass filter that performs a high-pass filtering process on the complementary signals from the magnetic sensor; a differential amplifier that receives the complementary signals having been subjected to the high-pass filtering process by the high-pass filter as a differential input signal and amplifies the differential input signal at a predetermined amplification factor based on the reference voltage; and a comparator that outputs a binary signal indicating a comparison result between an output signal of the differential amplifier and the reference voltage.

Abstract: A motor according to a disclosed embodiment includes: a plurality of magnetic sensors that output sine wave signals having a certain phase difference in order in accordance with rotation of a rotor; a signal amplifier that amplifies a difference between an output signal of each of the plurality of magnetic sensors and an average signal that is an average of the output signals of the plurality of magnetic sensors; and a pulse signal generation unit that converts an output signal of the signal amplifier into a pulse signal.

Abstract: An offset of an output voltage of a magnetic sensor caused by an external magnetic field is removed. A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor that is arranged at a predetermined mechanical angle with respect to the first magnetic sensor and detects the rotational position of the rotor; a signal amplifier that amplifies a difference between a first signal which is a signal output from the first magnetic sensor and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generator that converts an output signal of the signal amplifier into a pulse signal.

Abstract: An offset of an output voltage of a magnetic sensor caused by an external magnetic field is removed. A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor arranged at a position shifted by ?/N in a rotation direction of the rotor with respect to the first magnetic sensor when the number of pole pairs is N; a signal amplifier that amplifies a difference between a first signal which is a signal output from the first magnetic sensor and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generation unit that converts an output signal of the signal amplifier into a pulse signal.

Abstract: A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor arranged at a rotation center of the rotor; a signal amplifier that amplifies a difference between a first signal, which is a signal output from the first magnetic sensor, and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generation unit that converts an output signal of the signal amplifier into a pulse signal.

Abstract: A signal processing circuit amplifies a signal of a magnetic sensor that changes according to the magnitude of a magnetic force. The signal of the magnetic sensor is a pair of signals inverted from each other with respect to a reference voltage. The signal processing circuit includes: a high-pass filter that performs a high-pass filtering process on the complementary signals from the magnetic sensor; a differential amplifier that receives the complementary signals having been subjected to the high-pass filtering process by the high-pass filter as a differential input signal and amplifies the differential input signal at a predetermined amplification factor based on the reference voltage; and a comparator that outputs a binary signal indicating a comparison result between an output signal of the differential amplifier and the reference voltage.

Abstract: A circuit element includes an upper switching device, a lower switching device, an upper diode device, and a lower diode device. An upper drain is connected to a first terminal connected to a positive electrode of a power supply, and an upper source is connected to a third terminal. A lower drain is connected to a fourth terminal, and a lower source is connected to a second terminal connected to a negative electrode of the power supply. An upper anode is connected to the fourth terminal, and an upper cathode is connected to the first terminal. A lower anode is connected to the second terminal, and a lower cathode is connected to the third terminal. The third terminal and the fourth terminal are arranged so as to be able to be short-circuited outside of a package.

Abstract: An arithmetic circuit includes an auto-zero amplification circuit that compensates an offset of an entered differential signal, and a comparator circuit that converts an output signal from the auto-zero amplification circuit to a digital signal. The auto-zero amplification circuit and comparator circuit are provided in the same package.

Abstract: A circuit element includes an upper switching device, a lower switching device, an upper diode device, and a lower diode device. An upper drain is connected to a first terminal connected to a positive electrode of a power supply, and an upper source is connected to a third terminal. A lower drain is connected to a fourth terminal, and a lower source is connected to a second terminal connected to a negative electrode of the power supply. An upper anode is connected to the fourth terminal, and an upper cathode is connected to the first terminal. A lower anode is connected to the second terminal, and a lower cathode is connected to the third terminal. The third terminal and the fourth terminal are arranged so as to be able to be short-circuited outside of a package.

Abstract: An ammonia synthesis catalyst synthesizing ammonia from nitrogen in a presence of moisture is provided. The ammonia synthesis catalysis includes a catalyst particle including an inorganic material that has a photocatalytic function and an inorganic acid. The catalyst particle is preferably an n-type semiconductor and includes oxide material including at least titanium preferably. The inorganic acid preferably corresponds to at least one of perchloric acid, hydrochloric acid, sulfuric acid, and phosphoric acid.

Abstract: [Problem] The present invention is to provide a catalyst used for a process for preparing methanol from carbon dioxide and hydrogen and the catalyst has high activity and excellent stability with the passage of time in reactivity. [Solution] The catalyst comprises copper, zinc, aluminum and silicon, and has a molar ratio of zinc to copper of 0.5 to 0.7, a molar ratio of silicon to copper of 0.015 to 0.05, a maximum intensity ratio of a peak derived from zinc to a peak derived from copper of not more than 0.25 and a half-value width (2?) of the peak derived from copper of 0.75 to 2.5. The process for producing methanol comprises using the catalyst.

Abstract: An ammonia synthesis catalyst synthesizing ammonia from nitrogen in a presence of moisture is provided. The ammonia synthesis catalysis includes a catalyst particle including an inorganic material that has a photocatalytic function and an inorganic acid. The catalyst particle is preferably an n-type semiconductor and includes oxide material including at least titanium preferably. The inorganic acid preferably corresponds to at least one of perchloric acid, hydrochloric acid, sulfuric acid, and phosphoric acid.

Abstract: A purification catalyst that purifies nitric acid is provided in the present disclosure. The purification catalyst includes a catalyst particle, an inorganic acid, and water. The catalyst particle includes a metal oxide that has a function of an n-type semiconductor. The purification catalyst purifies the nitric acid under at least one of a light irradiation condition and a heating condition.

Abstract: [Problem] The present invention is to provide a catalyst used for a process for preparing methanol from carbon dioxide and hydrogen and the catalyst has high activity and excellent stability with the passage of time in reactivity. [Solution] The catalyst comprises copper, zinc, aluminum and silicon, and has a molar ratio of zinc to copper of 0.5 to 0.7, a molar ratio of silicon to copper of 0.015 to 0.05, a maximum intensity ratio of a peak derived from zinc to a peak derived from copper of not more than 0.25 and a half-value width (2?) of the peak derived from copper of 0.75 to 2.5. The process for producing methanol comprises using the catalyst.