Abstract: A power supply voltage terminal and a ground terminal having a rectangular cross section are respectively connected to a first terminal hole of a power supply pattern and a second terminal hole of a ground pattern. An inductor is surface-mounted on a substrate, and has a rectangular parallelepiped shape in which an input end connected to a power supply pattern and an output end connected to a power supply relay face each other. A first electrode terminal of a capacitor is connected to the power supply pattern, a second electrode terminal is connected to the ground pattern, and constitutes a filter circuit together with the inductor. A wall surface of an input end of the inductor is arranged parallel to the longitudinal axis direction (x direction) of the first terminal hole. The inductor opposes the first terminal hole so as to include the entire length Wh of the first terminal hole within the width Wt of the input end in the x direction.

Abstract: A rear frame has a plurality of engaging portions engaged with connection members. An engagement surface of the specific engaging portion which is a part of the plurality of engaging portions is in a state in which the connection member is in contact with the connection member, and the material of the rear frame is exposed. Among the plurality of engaging portions, the other engaging portion other than the specific engaging portion and the outer wall portion of the rear frame exposed to the outside space have a coating.

Abstract: A power supply voltage terminal and a ground terminal having a rectangular cross section are respectively connected to a first terminal hole of a power supply pattern and a second terminal hole of a ground pattern. An inductor is surface-mounted on a substrate, and has a rectangular parallelepiped shape in which an input end connected to a power supply pattern and an output end connected to a power supply relay face each other. A first electrode terminal of a capacitor is connected to the power supply pattern, a second electrode terminal is connected to the ground pattern, and constitutes a filter circuit together with the inductor. A wall surface of an input end of the inductor is arranged parallel to the longitudinal axis direction (x direction) of the first terminal hole. The inductor opposes the first terminal hole so as to include the entire length Wh of the first terminal hole within the width Wt of the input end in the x direction.

Abstract: A rear frame has a plurality of engaging portions engaged with connection members. An engagement surface of the specific engaging portion which is a part of the plurality of engaging portions is in a state in which the connection member is in contact with the connection member, and the material of the rear frame is exposed. Among the plurality of engaging portions, the other engaging portion other than the specific engaging portion and the outer wall portion of the rear frame exposed to the outside space have a coating.

Abstract: In an electronic device, a heat generation part pattern is connected to a heat generating element to heat from the heat generating element. A temperature detecting element is disposed adjacent to a first surface of a substrate. A direct under layer pattern is disposed on a second surface of the substrate opposite to the temperature detecting element in an area including a portion corresponding to the temperature detecting element. An interlayer connection pillar connects between the heat generation part pattern and the direct under layer pattern to conduct heat. The heat generated from the heat generating element is effectively conducted to the temperature detecting element through the heat generation part pattern, the interlayer connection pillar, and the direct under layer pattern, and thus the temperature detecting element accurately detects the temperature of the heat generating element.

Abstract: In an electronic device, a heat generation part pattern is connected to a heat generating element to heat from the heat generating element. A temperature detecting element is disposed adjacent to a first surface of a substrate. A direct under layer pattern is disposed on a second surface of the substrate opposite to the temperature detecting element in an area including a portion corresponding to the temperature detecting element. An interlayer connection pillar connects between the heat generation part pattern and the direct under layer pattern to conduct heat. The heat generated from the heat generating element is effectively conducted to the temperature detecting element through the heat generation part pattern, the interlayer connection pillar, and the direct under layer pattern, and thus the temperature detecting element accurately detects the temperature of the heat generating element.

Abstract: In a rotation detection apparatus, a rotation-angle detector detects a rotation angle of a rotating body based on an output signal generated by a resolver. An exciting-signal generation circuit supplies an exciting signal for exiting the resolver to generate the output signal. An abnormality detection circuit detects an abnormality of an exciting-signal output terminal for outputting the exciting signal or an abnormality of an exciting-signal line for transmitting the exciting signal. A power-supply stopping circuit stops a power supply to the exciting-signal generation circuit when the abnormality detection circuit detects an abnormality of the exciting-signal output terminal or detects an abnormality of the exciting-signal line.

Abstract: A motor controller including an inverter including plural switching elements that are subjected to PWM control to generate sine waves of plural phases, a motor including a stator coil supplied with the sine waves thus generated so that rotational magnetic field is generated in the stator coil, and a rotor that is rotationally driven by the action of the rotational magnetic field generated by the stator coil, a storage unit for detecting the sine waves of the respective phases generated in the inverter and storing a correction amount for each phase that is calculated on the basis of the detection result so that the sine waves of the respective phases are coincident with one another and a correcting unit for correcting a PWM signal for carrying out the PWM control on the switching elements on the basis of the correction amount thus calculated.

Abstract: An electronic control system comprises a power source, a controller and a power source relay for supplying and cutting off a supply of power to the controller. A fusion detecting circuit includes a capacitor and a first resistor connected to the power source relay to detect fusion of the power source relay. A second resistor is connected in parallel to the first resistor. A switching element is connected to one of the first resistor and the second resistor in series. The switching element is set to an ON-state when the power source relay is set to the OFF-state, thereby discharging a charge accumulated in the capacitor through the first resistor and the second resistor.

Abstract: A brushless motor driving device having a current detecting unit for detecting a phase-current of a brushless motor, a voltage detecting unit for detecting a phase voltage of the brushless motor, and a signal input portion to which the detection value of the phase-current and the detection value of the phase-voltage are input and which has plural input terminals arranged sequentially. The detection values of phase currents or detection values of phase voltages which are different in characteristic are input to adjacent input terminals.

Abstract: A transmission-ratio-varying steering apparatus has a control circuit capable of storing a rotation angle between input and output shafts in a non-volatile memory when the generator outputs a surge voltage. The transmission-ratio-varying steering apparatus includes clamp means provided between a battery and generator on one side and a power-supply circuit on the other side. The clamp means clamps a surge voltage generated by the generator to a third predetermined voltage higher than a first predetermined voltage but lower than a second predetermined voltage. If a surge voltage higher than the second predetermined voltage is generated by the generator, a self-protection function of the power-supply circuit can be prevented from cutting off power being supplied to a microcomputer and an EEPROM.

Abstract: A motor controller including an inverter including plural switching elements that are subjected to PWM control to generate sine waves of plural phases, a motor including a stator coil supplied with the sine waves thus generated so that rotational magnetic field is generated in the stator coil, and a rotor that is rotationally driven by the action of the rotational magnetic field generated by the stator coil, a storage unit for detecting the sine waves of the respective phases generated in the inverter and storing a correction amount for each phase that is calculated on the basis of the detection result so that the sine waves of the respective phases are coincident with one another and a correcting unit for correcting a PWM signal for carrying out the PWM control on the switching elements on the basis of the correction amount thus calculated.

Abstract: A brushless motor driving device having a current detecting unit for detecting a phase-current of a brushless motor, a voltage detecting unit for detecting a phase voltage of the brushless motor, and a signal input portion to which the detection value of the phase-current and the detection value of the phase-voltage are input and which has plural input terminals arranged sequentially. The detection values of phase currents or detection values of phase voltages which are different in characteristic are input to adjacent input terminals.

Abstract: An electronic control system comprises a power source, a controller and a power source relay for supplying and cutting off a supply of power to the controller. A fusion detecting circuit includes a capacitor and a first resistor connected to the power source relay to detect fusion of the power source relay. A second resistor is connected in parallel to the first resistor. A switching element is connected to one of the first resistor and the second resistor in series. The switching element is set to an ON-state when the power source relay is set to the OFF-state, thereby discharging a charge accumulated in the capacitor through the first resistor and the second resistor.

Abstract: A transmission-ratio-varying steering apparatus has a control circuit capable of storing a rotation angle between input and output shafts in a non-volatile memory when the generator outputs a surge voltage. The transmission-ratio-varying steering apparatus includes clamp means provided between a battery and generator on one side and a power-supply circuit on the other side. The clamp means clamps a surge voltage generated by the generator to a third predetermined voltage higher than a first predetermined voltage but lower than a second predetermined voltage. If a surge voltage higher than the second predetermined voltage is generated by the generator, a self-protection function of the power-supply circuit can be prevented from cutting off power being supplied to a microcomputer and an EEPROM.

Abstract: In a rotation detection apparatus, a rotation-angle detector detects a rotation angle of a rotating body based on an output signal generated by a resolver. An exciting-signal generation circuit supplies an exciting signal for exiting the resolver to generate the output signal. An abnormality detection circuit detects an abnormality of an exciting-signal output terminal for outputting the exciting signal or an abnormality of an exciting-signal line for transmitting the exciting signal. A power-supply stopping circuit stops a power supply to the exciting-signal generation circuit when the abnormality detection circuit detects an abnormality of the exciting-signal output terminal or detects an abnormality of the exciting-signal line.

Abstract: A process for producing 2,6-dimethylnaphthalene by subjecting 2,7-dimethylnaphthalene to an isomerization reaction, wherein the isomerization reaction is carried out by the use of a metallosilicate catalyst that comprises a metallosilicate having a main cavity defined by a ten-oxygen-membered ring, that is in the form of aggregates of fine crystals of the metallosilicate, the external surface area of the aggregate as calculated from t-plot analysis made in the nitrogen adsorption method being 25 m2/g or more, and that has been treated to inactivate acid centers present on the external surfaces of the fine crystals until the rate constant basic value N becomes 0.5 or less.

Abstract: A rational technical process for producing dialkylnaphthalenes from petroleum-derived starting materials which exist in abundance is established.

Abstract: The present invention provides a method for producing .beta.-methylnaphthalene from an inexpensive and easily available feed oil. According to the invention, highly pure .beta.-methylnaphthalene adequate for industrial use can be mass-produced at reduced costs. The method comprises catalytic hydrodealkylation of a feed oil containing an alkyl naphthalene having at least two methyl groups in the presence of a catalyst having at least one metal species of selected from the group consisting of vanadium (V), chromium (Cr), nickel (Ni), rhodium (Rh), platinum (Pt), iridium (Ir), and compounds of these metals as an active component and a carrier therefor containing at least one of alumina and silica as its primary component, with a hydrogen partial pressure of 1 to 50 kgf/cm.sup.2, at a temperature of 450.degree. C. to 650.degree. C., and for a contact time of 3 to 35 seconds. The method of the invention is excellent in that it affords .beta.-methylnaphthalene of a chemical grade with a high yield.

Abstract: A generating apparatus for a vehicle is composed of an AC generator, a battery and a rectifying bridge circuit. The bridge circuit is composed of high-side elements and low-side elements. One of the low-side rectifying elements which is connected to an armature coil generating the giant-pulse-voltage is turned on to circulate the giant-pulse-voltage in the armature coils, thereby suppressing the giant-pulse-voltage.