Abstract: Provided is a piezoelectric film including an AlN crystal, and a first element and a second element doped to the AlN crystal. The first element is an element having an ionic radius larger than an ionic radius of Al. The second element is an element having an ionic radius smaller than the ionic radius of Al. Also provided are piezoelectric film laminated body including an underlayer and a piezoelectric film including ScAlN, and a method of manufacturing the same. The underlayer has a crystal lattice having six-fold symmetry or three-fold symmetry. Also provided are a piezoelectric film including ScAlN having a laminated structure of a hexagonal crystal and a cubic crystal, and a method of manufacturing the same. The cubic crystal is doped with an element other than trivalent element.

Abstract: On a cross sectional surface X1 of a pump electrode 3 in a gas sensor element forming a gas sensor, a noble metal area 31 having Pt—Au aggregations, a solid electrolyte area 32 having solid electrolyte aggregations, a mixture area in which Pt—Au alloy and solid electrolyte are distributed, and pores 34. The mixture area 33 is formed within a range of 30 to 90% in an overall area of the cross sectional surface X1, excepting the pores 34. The pores are formed adjacent to the mixture area 33.

Abstract: A signal detection circuit includes: a first capacitor having a first terminal connected with a first main terminal of a switching element; a second capacitor having a first terminal connected with a second main terminal of the switching element; and a detection circuit having a differential circuit configuration. The detection circuit receives, as input signals, a signal from a second terminal of the first capacitor and a signal from a second terminal of the second capacitor, detects detection target signals based on the input signals. The detection target signals include a signal of the first main terminal of the switching element and a signal of the second main terminal of the switching element.

Abstract: An apparatus for manufacturing a stator includes a placement table, a supporting member and a resistance heating device. The placement table is configured to have a stator core, which has coil segments and insulators inserted in slots thereof, placed thereon. The stator core is formed of steel sheets that are laminated in an axial direction of the stator core. The coil segments together form a stator coil. The insulators are formed of a material that is foamable upon being heated. The supporting member is configured to support, in the axial direction of the stator core, distal end portions of teeth of the stator core so as to prevent gaps from being formed between the steel sheets forming the stator core. The resistance heating device is configured to heat, through energization of the stator coil, the insulators along with the stator coil and thereby cause the insulators to foam.

Abstract: A gas sensor element includes a solid electrolyte plate, and a measurement electrode and a reference electrode provided on surfaces of the solid electrolyte plate. In a section plane of the reference electrode along a thickness direction, noble metal regions, solid electrolyte regions, mixed regions, and void spaces are present. When a ratio of an area B of the mixed regions in the section plane with respect to an area A of the reference electrode in the section plane is a mixed region ratio B/A, and a ratio of an area C of the void spaces in the section plane with respect to the area A of the reference electrode in the section plane is a void space ratio C/A, a parameter value as a product of the mixed region ratio B/A and the void space ratio C/A falls within a range of 0.001 to 0.01.

Abstract: A seed crystal for single crystal 4H-SiC growth of the present invention is a disk-shaped seed crystal for single crystal 4H-SiC growth having a diameter of more than 150 mm and having a thickness within a range of more than or equal to 1 mm and less than or equal to 0.03 times of the diameter, in which one surface on which the single crystal 4H-SiC is grown is a mirror surface and an Ra of the other surface is more than 10 nm, and an absolute value of magnitude of waviness in a state where the seed crystal is freely deformed so that an internal stress distribution is reduced is less than or equal to 12 ?m.

Abstract: A prime mover includes a stator fixed to a housing, and a rotor rotatable relative to the stator. The prime mover is capable of outputting torque from the rotor by being supplied with electric power. A speed reducer is capable of reducing the torque of the prime mover and outputting the reduced torque. The speed reducer includes a sun gear rotatable integrally with the rotor, and planetary gears capable of revolving in a circumferential direction of the sun gear while rotating in a state of meshing with the sun gear. A gear width of the sun gear is set such that a length in the axial direction by which the sun gear and the planetary gear are overlapped is smaller than a gear width of the planetary gear.

Abstract: A motor having an iron stator, an iron rotor, and an aluminum rear frame serving as a heat sink The stator is fixed onto an inner wall of a housing by an interference fit, and two sets of three-phase windings are wound thereon so that a phase difference between the two sets of windings is (30±60×n)° (i.e., n is an integer), the rotor is provided inside the stator and rotates about a shaft by a rotating magnetic field generated by the stator due to energization of the three-phase windings, and the rear frame is fixed onto the inner wall of the housing by an interference fit, and holds a rear bearing that rotatably supports the shaft on one side of the rear frame in an axial direction.

Abstract: A vehicle mountable camera is provided which includes an imaging device, an exposure controller, and an image processor. The imaging device is configured to be installed behind a windshield of a subject vehicle to capture an image of a forward view in front of the subject vehicle. The exposure controller controls the degree of exposure of the imaging device. The image processor executes an image processing operation on the captured image. The camera determines whether a brightness boundary exists in front of the subject vehicle and, when the brightness boundary is determined to exist, controls the exposure of the imaging device and/or adjustment of brightness of the image quickly when the subject vehicle passes the brightness boundary. This minimizes a risk that the captured image may be darkened or brightened suddenly immediately after the subject vehicle moves from a sunny area to a shaded area or vice versa.

Abstract: A method for manufacturing a semiconductor device having a junction field effect transistor, includes: preparing a substrate having a first conductivity type drift layer; forming a first conductivity type channel layer above the drift layer by an epitaxial growth, to thereby produce a semiconductor substrate; forming a second conductivity type gate layer within the channel layer by performing an ion-implantation; forming a second conductivity type body layer at a position separated from the gate layer within the channel layer by performing an ion-implantation; and forming a second conductivity type shield layer at a position that is to be located between the gate layer and the drift layer within the channel layer by performing an ion-implantation. The shield layer is formed to face the gate layer while being separated from the gate layer, and is kept to a potential different from that of the gate layer.

Abstract: A compound semiconductor layer in a semiconductor device includes a drift region of a first conductivity type, a JFET region of the first conductivity type disposed above the drift region, a body region of a second conductivity type disposed above the drift region and adjacent to the JFET region, and a JFET embedded region of the second conductivity type or i-type disposed in the JFET region. The JFET region has a bottom surface portion adjacent to the drift region, a side surface portion adjacent to the body region, and an inside portion adjacent to the JFET embedded region, and further has a high concentration portion at the bottom surface portion and the side surface portion. The high concentration portion has an impurity concentration higher than an impurity concentration of the inside portion.

Abstract: A stator includes a wound member that includes a wound portion extending in a radial direction, and a pair of outer extension portions which extend in a circumferential direction from a radially outer end portion of the wound portion, and a coil wound on the wound portion. On an inner side in the radial direction of a base portion of the outer extension portions, a concave portion is recessed radially outward from the winding outermost diameter position. The first layer of the coil includes a first coil, a center of which is positioned radially inward from the winding outermost diameter position and in a range between 0.5 times a coil wire diameter and 1.5 times the coil wire diameter with respect to the winding outermost diameter position, and a second coil, a part of which is disposed in the concave portion on the radially outer side of the first coil.

Abstract: A rotating electric machine includes an armature and a busbar unit. The armature includes an annular armature core and a multi-phase armature coil wound on the armature core. The busbar unit is configured to connect winding end portions of the armature coil which are arranged apart from one another in a circumferential direction of the armature. Moreover, the busbar unit is fixed to a back yoke of the armature core by a plurality of pins.

Abstract: A method for manufacturing a gallium nitride semiconductor device includes: preparing a gallium nitride wafer; forming an epitaxial growth film on the gallium nitride wafer to provide a processed wafer having chip formation regions; perform a surface side process on a one surface side of the processed wafer; removing the gallium nitride wafer and dividing the processed wafer into a chip formation wafer and a recycle wafer; and forming an other surface side element component on an other surface side of the chip formation wafer.

Abstract: A power supply controller works to control electrical power supplied to a surroundings monitor including an in-vehicle camera and an image processor which monitors surroundings of a vehicle using an output from the in-vehicle camera. The power supply controller includes a voltage monitor which determines whether an operating voltage for the image processor lies in a normal voltage range and an abnormal voltage range. Until a given threshold changing condition is met after start of power supply to the surroundings monitor, the voltage monitor alters at least one of an upper limit threshold and a lower limit threshold of the normal voltage range to decrease a difference between the upper and lower limit thresholds to be lower than that after the given threshold changing condition is satisfied. This ensures the stability in supplying electrical power to the surroundings monitor without restricting an operation of the surroundings monitor more than required.

Abstract: A solenoid includes a coil, a cylindrical sliding core, a columnar plunger, a bottomed cylindrical yoke including a cylindrical portion and a bottom portion that is connected to the cylindrical portion and faces a base end surface of the plunger, and the bottomed cylindrical yoke configured to accommodate the coil, the sliding core, and the plunger, a magnetic attraction core arranged to face a distal end surface of the plunger, and a magnetic flux transfer member that transfers magnetic flux between the sliding core and the yoke. When the plunger is closest to the magnetic attraction core, a position of the base end surface of the plunger along an axial direction is the same as position of the end of the sliding core along the axial direction, or is closer to the bottom portion side of the sliding core along the axial direction than the end of the sliding core.

Abstract: A method for manufacturing a soldered product by soldering a solder object portion, including: a solder supplying step that causes a cylindrical soldering iron having a through hole to contact with the solder object portion to supply a thread solder piece to the solder object portion from the through hole; a heating step that heats the thread solder piece with the cylindrical soldering iron and causes to melt the thread solder piece at the solder object portion; and a curing step that cures a melting object of the thread solder piece to solder the solder object portion. The thread solder piece is composed of a core containing a flux and a coating member containing a solder alloy that covers the core. The flux has a rosin having an acid value which is substantially as a main component thereof.

Abstract: A rotor core includes a shaft hole, into which a shaft is inserted, and keys, which are protrusions corresponding to keyways of the shaft. A radial distance, which is the distance from the center of the shaft hole to an inner wall varies depending on the position in the circumferential direction of the shaft hole. The shaft hole includes key regions and increased diameter regions, in each of which the radial distance is longer than the radius of the shaft. Keys are respectively arranged in the key region. The shaft hole also includes contact regions, in which the shaft and the inner wall come into contact with each other when the shaft is inserted into the shaft hole. The contact regions are each located between the key regions or between the increased diameter regions. The contact regions are arranged at equal intervals in the circumferential direction.

Abstract: A pedestrian collision warning system includes a transceiver, a memory and a control module. The transceiver receives a PSM and a map message at a vehicle. The memory stores map data. The control module: based on the messages, determines possible conflict boxes in which the vehicle and a pedestrian are predicted to be in at a same time; based on the map data and the map message, determines a most likely path of the vehicle through the intersection from possible intersection paths; based on the most likely path of the vehicle and the possible conflict boxes, determines whether the vehicle and the pedestrian will be in a possible conflict box at a same time; and in response to determining that the vehicle and the pedestrian will be in a possible conflict box at a same time, alerts an occupant of the vehicle or the pedestrian of a potential collision.

Abstract: A power source system has a first system having a first power supply path and a first power source supplying a power source voltage, a second system having a second power supply path and a second power source having a battery being charged by the power source voltage, an intersystem switch, a switching controller switching the intersystem switch between an open state and a closed state, and a charging discharging part, arranged between the second power source and a connection node of a connection path on the second power supply path. The charging discharging part performs charging of the battery by the power source voltage and discharging of the battery based on a discharging request after completion of battery charging, and performs charging of the battery before the switching controller switches the intersystem switch to the open state from the closed state when overvoltage occurs in any system under the closed state of the intersystem switch.