摘要:
A head drum apparatus including a lower drum; a stationary shaft pressed and fitted into a center hole of the lower drum; an upper drum rotatably coupled to the stationary shaft via at least one bearing; a rotor magnet secured via a plate to the upper drum; a boss fixed to the top portion of the stationary shaft by a set-screw; a PCB mounted to the boss such that it is opposite to the rotor magnet, the PCB having a pulse generator (“PG”) pattern, a frequency generator (“FG”) pattern, connection patterns and jump patterns formed on one surface thereof, the PG pattern and the FG pattern being connected to the respective connection patterns via the respective jump patterns; and motor stator coils mounted to the PCB, whereby the structure of the motor becomes simpler, the number of the components and the manufacturing steps are reduced, the manufacturing efficiency is enhanced and the productivity thereof is increased.
摘要:
A magnetic recording/reproducing apparatus, having a driving source; a main chassis on which the driving source is mounted; a sub chassis which is disposed to the main chassis so as to be slid in a front and rear direction, and which is provided with various tape running elements; a head drum device which is mounted on the main chassis; a loading system provided with a supply side pole base driving device and a winding side pole base driving device which loads a tape depending on the moving operation of the sub chassis in the front and rear direction; a running system which runs the tape in a desired direction at a desired speed; a main power transmitting unit which selectively transmits a power of the power source to the loading system or the running system; a cam gear which is rotated by the main power transmitting unit and transmits the power to each mode; a slider which is disposed between the main chassis and the sub chassis so as to be slid in a left and right direction and interlocked with the cam gear; a mode detecting unit which detects each mode according to the tape running; a tape tension regulating unit which applies a proper tension to the tape; an automatic separating unit which automatically blocks a power transmission to the loading system in a particular mode; a connecting unit which permits the power transmission to the loading system in a particular mode; and a connection maintaining unit which maintains the power transmission at the time of loading/unloading the tape or in the early re-connection which transmits again the power to the loading system.
摘要:
A head drum apparatus comprises: a lower drum; a stationary shaft pressed and fitted into a center hole of the lower drum; an upper drum rotatably coupled to the stationary shaft via at least one bearing; a boss fixed to the top portion of the stationary shaft by means of a set-screw; a motor rotor mounted to the top surface of the upper drum; a motor stator fixed to the boss, the motor stator being opposite to the motor rotor; and a ground device. The ground device includes an anchor member anchored to the upper surface of the boss and an elastic member fixed to the bottom surface of the anchor member. The elastic member extends downwardly through a bore in the boss, and a ground member is fixed to tile lower end of the elastic member. The ground member is in elastic contact with an outer race of an upper bearing. Accordingly, the assembly and the disassembly operations of the components of the ground device become simpler and easier, thereby increasing the productivity and enhancing the service operation efficiency thereof.
摘要:
A membrane electrode assembly including an electrolyte membrane; a catalyst layer on the electrolyte membrane; a gas diffusion layer attached to the catalyst layer; and an adhesive layer between the electrolyte membrane and the gas diffusion layer around an outer edge of the catalyst layer, and a fuel cell stack including a plurality of unit cells, each including one of the membrane electrode assemblies.
摘要:
An open-tube type impurity diffusion apparatus for simultaneously diffusing impurities into a plurality of wafers in a same controlled environment. The apparatus includes a diffusion box including a diffusion source, a diffusion box for holding a plurality of wafers, a slider including a body having a perforated portion and non-perforated portion and heaters disposed in a furnace. Because the apparatus can be used to simultaneously diffuse impurities into a plurality of wafers once, a mass of semiconductors can be produced, production cost and time can be decreased, and deviation of the wafer characteristics from wafer to wafer within a batch can be minimized.
摘要:
A liquid crystal display device (LCD) is constructed with a light blocking layer positioned on a data line region of a lower substrate defined by pixel regions and data line regions. A data line is positioned on the data line region of the lower substrate to overlap the light blocking layer with a gate insulating layer interposed therebetween. An organic insulating layer is positioned on the data line region of the lower substrate in order to cover the data line. Pixel electrodes are respectively positioned on the pixel regions to be spaced apart from the data line. Capacitors are respectively positioned on the pixel regions, and each of the capacitors has a lower electrode formed of a first transparent conductive material and an upper electrode formed of a second transparent conductive material, and the upper electrode is physically insulated from the data line with the organic insulating layer interposed therebetween.
摘要:
A cassette tape ejecting apparatus has a chassis having a pin boss, a hook hole and a locking groove formed as a single body, a cassette housing installed on the chassis to be transferred to a tape insertion position and a tape ejection position, a cassette tape being mounted thereon, a locking lever being installed on the cassette housing, and having a locking protrusion hooked on the looking groove of the chassis when the cassette housing is transferred to the tape insertion position, an eject lever installed on the chassis to be rotated through the pin boss of the chassis in the forward/backward direction unlocks the locking protrusion from the locking groove of the chassis to eject the cassette tape, and a cassette switch turned on/off by the forward/backward rotation of the eject lever, for detecting ejection of the cassette tape.
摘要:
A cassette tape ejecting apparatus has a chassis having a pin boss, a hook hole and a locking groove formed as a single body, a cassette housing installed on the chassis to be transferred to a tape insertion position and a tape ejection position, a cassette tape being mounted thereon, a locking lever being installed on the cassette housing, and having a locking protrusion hooked on the looking groove of the chassis when the cassette housing is transferred to the tape insertion position, an eject lever installed on the chassis to be rotated through the pin boss of the chassis in the forward/backward direction unlocks the locking protrusion from the locking groove of the chassis to eject the cassette tape, and a cassette switch turned on/off by the forward/backward rotation of the eject lever, for detecting ejection of the cassette tape.
摘要:
A silicon light-receiving device is provided. In the device, a substrate is based on n-type or p-type silicon. A doped region is ultra-shallowly doped with the opposite type dopant to the dopant type of the substrate on one side of the substrate so that a photoelectric conversion effect for light in a wavelength range of 100-1100 nm is generated by a quantum confinement effect in the p-n junction with the substrate. First and second electrodes are formed on the substrate so as to be electrically connected to the doped region. Due to the ultra-shallow doped region on the silicon substrate, a quantum confinement effect is generated in the p-n junction. Even though silicon is used as a semiconductor material, the quantum efficiency of the silicon light-receiving device is far higher than that of a conventional solar cell, owing to the quantum confinement effect. The silicon light-receiving device can also be formed to absorb light in a particular or large wavelength band, and used as a solar cell.
摘要:
This invention is related to a semiconductor light emitting device integrated with a Si-heat sink which contains not only a beam deflector but also the driving integrated circuits. A semiconductor light emitting device comprising a Si-substrate 2, V-groove 3 etched into substrate 2 and a beam deflector 9 on the wall of V-groove 3 wherein the transistor 22 for the driving and control on said Si-substrate is integrated so that light emitting device 1 and said integrated circuit are integrally mounted. The advantage of this invention is that the integration of the driving transistor with the light emitting device in the same package head reduces the packaging and bonding problems. Obtained is a compact optical system which easily radiates the heat dissipated by devices. This is in contrast to conventional light emitting devices which use the Si-substrate only as a mount and beam deflector.