摘要:
An electric discharge machining apparatus includes a wire electrode for machining a workpiece, and a first voltage applying unit for applying a voltage pulse. The voltage pulse has a rise time longer than a discharge formative time lag when a rectangular voltage pulse is applied, when a distance between the workpiece and the wire is an average value in machining, and rises to the same voltage as the rectangular voltage pulse.
摘要:
In a host interface circuit performing data transmission/reception between an external host controller and a device connected to the external host controller, the external host controller generates, as external addresses to be supplied to the connected device, first addresses corresponding to the respective internal addresses in an internal storage space of the connected device, and a specific second address corresponding to internal addresses of a series of areas in the internal storage space; and the host interface circuit includes a first address conversion circuit for converting the first addresses into the internal addresses in the internal storage space, and a second address conversion circuit for converting the specific second address into the internal addresses in the internal storage space; and the specific second address is used when the external host controller makes continuous access to the serial areas in the internal storage space of the connected device. Therefore, the external host controller can make continuous access to a series of areas in the internal storage space of the connected device by using the specific address, without using DMA, between the external host controller and the host interface circuit. As the result, power consumption is reduced, and complexity in software processing is reduced.
摘要:
Column electrodes W1 to Wm are arranged on the side of a rear glass substrate along a first direction D1 at regular intervals. Row electrodes X1 to Xn and Y1 to Yn include (a) strip bus electrodes Xb1 to Xbn and Yb1 to Ybn alternately arranged on a surface of a front glass substrate closer to discharge spaces at regular pitches to extend in a second direction D2 and (b) square transparent electrodes Xt and Yt having ends connected to the bus electrodes Xb1 to Xbn and Yb1 to Ybn respectively. The transparent electrodes Xt and Yt alternately extend into single ones of unit areas AR adjacent to each other in the first direction D1 through the bus electrodes Xbi and Ybi connected with the ends thereof. The unit areas AR are separated into discharge cells C having discharge gaps defined by opposite edges of the transparent electrodes Xt and Yt and non-discharge cells NC having no discharge gaps. The discharge gaps C are not adjacent to each other in the first and second directions D1 and D2. Thus provided is an AC-PDP capable of suppressing/avoiding false discharge.
摘要:
A MISFET capable of a high speed operation includes a metal silicide layer in a high concentration region aligned with a gate side wall layer on a self-alignment basis. A MISFET which can be driven at a high voltage includes an LDD portion having a width greater than the width of the side wall layer, a high concentration region in contact with the LDD portion and a metal silicide layer in the high concentration region.
摘要:
In forming a plug 21 of a polycrystalline silicon film in a contact hole 19 to which a bit line BL is connected, the upper surface of the plug 21 is retracted downward from the upper edge of the contact hole 19, and a plug 22 of a laminate of a TiN film 26 and a W film 27 is formed on the plug 21. Then, the W film deposited on the contact hole 19 is patterned to form a bit line BL having a width narrower than the diameter of the contact hole 19. Here, the W film 27 constituting part of the plug 22 in the contact hole 19 is etched, but the TiN film 26 constituting another part of the plug 22 is not almost etched.
摘要:
A fuel tank cap body unit includes a fuel pump portion which is integrated with a fuel filter portion to form a filter-equipped pump. The filter-equipped pump is fixedly contained in a rotary tank having a flat base with which the base of the fuel tank is brought into contact. A fuel tank cap body through which a fuel discharge flow channel portion is passed, is provided. The fuel tank cap body includes a rotary-tank mounting wall, which can be made flexibly movable by a flexible mechanism, and can accommodate the rotary tank and the filter-equipped pump.
摘要:
A piezoelectric component prevents development of a short circuit between separate electrodes of a piezoelectric element and provides a high level of connection reliability. The piezoelectric component includes a piezoelectric element utilizing a longitudinal oscillation mode and being mounted on a mounting substrate. The piezoelectric element has on one main surface thereof a first electrode and a second electrode formed by dividing electrode material via longitudinally extending linear grooves and, on the other main surface, a third electrode. Conductive support members are secured to node sections of the first and second electrodes so as to be spaced apart from each other with respect to the longitudinal dimension of the piezoelectric substrate. The support members are adhered to and secured to pattern electrodes of the mounting substrate by conductive adhesive.
摘要:
An electronic component has a substantially reduced size and is adapted to be produced at low costs without variation in superior quality of the component because of the ease of achieving electrical connection between a piezoelectric element and a electrode pattern on a substrate supporting the piezoelectric element. The piezoelectric element has a lower electrode formed on the lower surface thereof and an upper electrode formed on the upper surface thereof. The piezoelectric element is fixed to the substrate such that the lower electrode is bonded to an electrode provided on the substrate by a conductive adhesive. A conductive wire is fixed to the upper electrode of the piezoelectric element. A metallic cap is bonded to the substrate so as to cover and seal the piezoelectric element on the substrate. The cap is contacted at its inner surface by the wire, whereby an electrical connection is achieved between the cap and the upper electrode of the piezoelectric element. Input and output lead terminals are connected to the electrodes on the substrate, while a grounding lead terminal is connected to the cap.
摘要:
Power supply apparatus includes a converter which converts a commercial AC voltage into a DC voltage. An inverter converts the DC voltage into a high frequency voltage. The high frequency voltage is voltage-transformed by a transformer, and then rectified and smoothed by a rectifier and a smoothing reactor into a DC voltage. This DC voltage is applied between a workpiece and a torch. A high frequency voltage generator generates a high frequency voltage and applies it to a primary winding of a coupling transformer. A boosted high frequency voltage is induced in a first secondary winding and applied between the workpiece and the torch, so that arcing is initiated. The coupling transformer includes a second secondary winding in which another high frequency voltage is induced. The high frequency voltage induced in the second secondary winding is converted into a DC voltage by a diode and a smoothing capacitor for application between the workpiece and the torch, so that the arcing is sustained.
摘要:
The earth leakage breaker of the invention includes a first comparator; a second comparator connected to the first comparator; a third comparator having a threshold higher than the threshold of the first comparator for distinguishing a leakage current from the grounding current caused by a lightning surge or by the heavy ground fault; a monostable multivibrator triggered by the output of the third comparator for forming a time gate of a predetermined period; a counter for detecting a pulse outputted from the first comparator to distinguish whether the grounding current is caused by the lightning surge or by the heavy ground fault; and a trip signal generator circuit for outputting a trip signal in the case of leakage and heavy ground fault. The earth leakage breaker facilitates avoiding unnecessary breaking of the impulsive grounding current caused by the lightning surge.