摘要:
An electric power tool comprising: a motor including, a rotor, a stator including a plurality of teeth, and a coil wound on the teeth; a front-end tool configured to be driven by an output of the motor; a driving circuit configured to supply driving voltage to the coil of the motor; a control unit configured to control operation of the driving circuit; and a trigger switch configured to control activation and rotation of the motor wherein a first coil and a second coil are mounted on the teeth as the coil, and wherein the control unit controls supply of the driving voltage to the first coil and the second coil in accordance with a pulling amount of the trigger switch.
摘要:
Disclosed herein is a solid-state image pickup device including, a plurality of light receiving units, a transfer channel, a first transfer electrode, a second transfer electrode, first wiring, and second wiring.
摘要:
A solid-state imaging device includes a semiconductor substrate, one or more wiring interlayer films disposed on or above the semiconductor substrate, and one or more metal wires embedded in the wiring interlayer films. The one or more wiring interlayer films are composed of a diffusion preventing material that prevents the diffusion of the metal wire.
摘要:
A small infrared sensor has a wide infrared light-receiving area (viewing angle), high electromagnetic shielding characteristics, and excellent electromagnetic-wave resistance characteristics. In the infrared sensor, supporting portions are disposed at four corners of a substantially rectangular opening in a package. The supporting portions support an optical filter, disposed so as to cover the opening, at positions that are lower than an upper end of an inner peripheral wall defining the opening. While the optical filter is supported by the supporting portions as a result of inserting a portion of a surface side of the optical filter facing the supporting portions into the opening, the optical filter is secured to the package. The optical filter and the package are joined and secured, and electrically connected to each other through a conductive adhesive.
摘要:
Provides is a method of manufacturing an insert-molded article enabling to perform resin molding and tie bar cutting in one step and so as not to expose the cut planes of the tie bars to the external surface of the resin. A lead frame 1 provided with easily breakable notches 3a at positions closer to the metal component than the interfaces of fie bars 3 to be resin molded is prepared and positioned by means of pilot pins 11 provided to a lower mold 10. A metal component 4 is sandwiched between support protrusions 13 and component fixing pins 24 by lowering an upper mold 20 with the lead frame being positioned. Tie bar cutting punches 23 provided to the upper mold 20 are pressed against the tie bars, the tie bars 3 are separated from the metal component 4 by breaking the notches 3a, and the surroundings of the metal component 4 are filled with resin while the molds are closed. By this, the cut surfaces between the metal component 4 and the tie bars 3 are buried in the molded resin 7.
摘要:
There is provided a telephone transmitter/receiver which can be easily applied to an existing telephone device for performing bone conduction communication at a low cost and which can be used with the same sense as a conventional telephone device. The telephone transmitter/receiver is characterized by comprising: a casing having a speech sending opening and a speech receiving opening; a microphone arranged in the speech sending opening; a bone conduction loudspeaker arranged in the speech receiving opening; an amplifier arranged in the casing and connected to the bone conduction loudspeaker; a connection cord having a telephone connector which can be inserted into the jack of a telephone main body and connected to both the microphone and the bone conduction loudspeaker; and, a power supply connection cord connecting the amplifier to an AC adapter.
摘要:
A lightweight miniature mobile communication unit allows the user to listen sufficiently and talk quietly in a noisy place so that the user can make a call without disturbing nearby people in the crowd. The mobile communication unit uses a bone conduction speaker (1) separated from the main body (2) instead of a built-in speaker or an external earphone.
摘要:
The present invention provides an electronic component mounting apparatus which can reduce a consumption power amount in comparison with the background art, and a power supply control method which is executed by the electronic component mounting apparatus. A drive power source and a control power source are separately connected and shut-off in accordance with a command from a control device to each of component feed drive parts for driving component feed devices, a component transfer drive device for driving a component transfer device, and a circuit board positioning drive device for driving a circuit board positioning device. The control device detects an individual occurrence of halt condition of each of constitution parts of an electronic component mounting apparatus and shuts off the drive power source to the drive device in the halt condition. Thus, a wasteful power consumption is eliminated and the production is continued with a necessary minimum power.
摘要:
An electronic component mounting apparatus for sucking up an electronic component and placing it onto a board with a suction nozzle, includes a step of switching over air pressure switching timings for the suction nozzle when the component is sucked with the suction nozzle and when the sucked component is mounted on the board. The air pressure switching timings are switched according to a velocity of up and down movement of the suction nozzle and independently for each of when the component is sucked with the suction nozzle and when the sucked component is mounted on the board. An electronic component mounting apparatus includes a suction nozzle for sucking an electronic component and placing it onto a board, a device for moving up and down the suction nozzle for suction and mounting of the electronic component, an air pressure switching unit for switching air pressure to the suction nozzle at an electronic component suction position and an electronic component mounting position, and a switching drive unit for performing switching control of the air pressure switching unit independently for each of when the component is sucked with the suction nozzle and when the sucked component is mounted on the board.
摘要:
A multi-layered dielectric element serving as a capacitor or actuator which comprises a dielectric unit including a plurality of dielectric layers made of a perovskite oxide and a plurality of internal electrode layers sandwiched between the respective dielectric layers. The internal electrodes are each made of at least one conductive composite oxide of La, Ba and Cu having a perovskite-like structure wherein the atomic ratios of the metals are such that (La+Ba)/Cu=1 and La/Ba=4, or at least one conductive composite oxide of La, Sr and Cu having a perovskite-like structure wherein the atomic ratios of the metals are such that (La+Sr)/Cu=1 and La/Sr=3 or 4. The unit is sintered at a temperature of from 900.degree. to 1100.degree. C., so that interdiffusion of metal ions between the dielectric layers and the internal electrode layers is suppressed to a significant extent.