Akaishi, JP
Hiroshi Akaishi, Tokyo JP
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20150349452 | RECEPTACLE FOR CONNECTING MODULAR ELECTRONIC INSTRUMENTS - A receptacle is provided to connect modular electronic instruments to each other. A box-shaped case has a front face having an opening for inserting a single modular electronic instrument into the box-shaped case. A first connector is disposed inside the box-shaped case to connect the single modular electronic instrument to the receptacle. A second connector is disposed on a first side face of the receptacle for connecting the receptacle to a first receptacle on the side of the first side face. A third connector is disposed on a second side face of the receptacle for connecting the receptacle to a second receptacle on the side of the second side face. A lock secures the connection with one of the first and second receptacles. A leg is disposed on the bottom face. The position of the leg is deviated only to one of the first or second side faces. | 12-03-2015 |
Kazuya Akaishi, Kiryu-Shi JP
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20160059879 | STEERING DEVICE - Provided is a steering device including: a column pipe; an outer column; a fixing bracket; a hanger bracket that is fixedly attached to the column pipe; a biasing member that elastically biases the column pipe upward; a fastening jig; and a guide member which is made from a synthetic resin and has a sliding side portion, which is provided with a buffer protrusion and a bolt shaft hole, and a sliding bottom portion formed at the lower end of the sliding side portion. The buffer protrusion of the guide member | 03-03-2016 |
Kazuyuki Akaishi, Tokushima-Shi JP
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20150060934 | LIGHT EMITTING DEVICE - A side-view type light emitting device having a bottom surface thereof as a light emission surface and one side surface thereof as amounting surface for mounting on amounting substrate includes a stacked semiconductor layer having a first semiconductor layer, an active layer, and a second semiconductor layer which are stacked in that order from a side of the bottom surface; a first connecting electrode exposed from the one side surface and electrically connected to the first semiconductor layer; a metal wire having one end thereof electrically connected to an upper surface of the second semiconductor layer; a second connecting electrode exposed from the one side surface and electrically connected to the other end of the metal wire; and a resin layer which covers at least a part of each of the first semiconductor layer, the second semiconductor layer, the first connecting electrode, the second connecting electrode and the metal wire and which is configured to form an upper surface and side surfaces of the light emitting device. | 03-05-2015 |
Makoto Akaishi, Tokyo JP
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20110019658 | COMMUNICATION APPARATUS, DISTORTION-COMPENSATING CIRCUIT, AND DISTORTION COMPENSATION METHOD - A transmission circuit sends a transmission signal from a signal-processing unit to a port. A reception circuit sends a received signal from a port to the signal-processing unit. A waveform monitor, by monitoring the waveform of the transmission signal that is sent to the port from the transmission circuit, generates a feedback signal. A switch unit connects the feedback signal from the waveform monitor to the reception circuit at transmission timing. The signal-processing unit compares the transmission signal with the feedback signal of the transmission signal. | 01-27-2011 |
Masao Akaishi, Tokyo JP
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20130287362 | RECORDING CONTROL APPARATUS, RECORDING CONTROL METHOD, STORAGE MEDIUM STORING RECORDING CONTROL PROGRAM - A recording control apparatus that is capable of recording a video image at the time of starting motion detection before an event generation without setting pre-event recording time. A detection unit detects a moving subject in a video image. A setting unit sets a type of an event that is generated when specified time elapses after the detection unit detects a moving subject. A control unit stores the video image into an storage unit from the detection of the moving subject by the detection unit until recording time corresponding to the type of the event set by the setting unit elapses. | 10-31-2013 |
20140293071 | CONTROL APPARATUS AND METHOD OF CONTROLLING - A control apparatus controls an image capturing unit for which an image capturing direction is movable inputs at least one of a setting value for restricting a movable range for which the image capturing direction of an image capturing unit is movable, or a setting value for restricting a visible range for which displaying is permitted in a range capturable by moving the image capturing direction of the image capturing unit and controls one of the movable range or the visible range based on a setting value for restricting the other of the movable range and the visible range. | 10-02-2014 |
Masataka Akaishi, Ebina-Shi JP
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20120298845 | IMAGE POSITION DETECTOR AND IMAGE FORMING DEVICE - An image position detector includes a light emitting element to emit light to an image on an image carrier, a first light receiving element to receive a specular reflection of light from a surface of the image carrier and output a first light receiving signal, and a second light receiving element to receive a diffuse reflection of light from a surface of the image and output a second light receiving signal. The image position detector is configured to find the end position of the image according to a multiplied value obtained by multiplying values of the first and second light receiving signals by a constant coefficient. | 11-29-2012 |
20130001857 | REFLECTIVE PHOTOSENSOR AND IMAGE FORMING DEVICE INCORPORATING THE SAME - A reflective photosensor detects a target object. The photosensor includes a transparent circuit board, a light emitter and a light receiver on one surface of the circuit board, including a light emitting element and a light receiving element, respectively, and disposed so that the light emitting element and the light receiving element face the one surface, a concave portion on the other surface of the circuit board, including a first refractive face to oppose the light emitting element and refract light from the light emitting element to the light receiving element and a second refractive face to oppose the light receiving element and refract, to the light receiver, a component of the light refracted by the first refractive face and specularly reflected by the target object. | 01-03-2013 |
20130004189 | OPTICAL SENSOR UNIT AND IMAGE-FORMING APPARATUS - An optical sensor unit includes: a light-emitting device; a light-receiving device that receives light which is emitted from the light-emitting device and reflected from an object to be detected, and outputs an output value in accordance with the light; a shutter member that openably and closably covers an incident/exit plane having an exit part where light of the light-emitting device is emitted to the object to be detected and an incident part where light reflected from the object to be detected enters, and has a facing surface facing the incident/exit plane that is an inclined surface inclined to the incident/exit plane; and a corrector that corrects an output value of the light-receiving device when receiving light reflected from the object to be detected, based on an output value of the light-receiving device obtained by emitting light to the inclined surface of the shutter member. | 01-03-2013 |
20130022363 | PHOTOSENSOR AND IMAGE FORMING DEVICE INCORPORATING THE SAME - A photosensor includes a light emitting element to emit light to a target object, a light receiving element to receive the light emitted from the light emitting element and reflected by the target object, and a circuit board on which the light emitting element and the light receiving element are mounted, including at least one protrusion thereon. The light emitting element and the light receiving element each have a terminal. The at least one protrusion is configured to support one of the light emitting element and the light receiving element in a contact manner in a state that the terminal is electrically connected to the circuit board. | 01-24-2013 |
Masataka Akaishi, Kanagawa JP
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20140072320 | FIXING DEVICE - A fixing device which heats a heating object through induction heating by using a plurality of coils includes a plurality of coil drivers that drive the plurality of coils respectively, a drive circuit that controls ON/OFF states of a plurality of switching elements simultaneously to control the drive of the plurality of coil drivers, a control unit that controls a voltage supplied to each of the plurality of coils in accordance with the control of the ON/OFF states of the plurality of switching elements by the drive circuit, and a plurality of voltage control circuits that individually change the voltages supplied to the plurality of coils in accordance with the voltage control of the control unit. | 03-13-2014 |
20150010319 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a heating body; first and second coils for induction heating that heat the heating body by an induction heating method; a first switching element connected to the first coil for induction heating; a second switching element connected to the second coil for induction heating; a driving signal transmission unit that sends a first drive signal to the first switching element and a second drive signal to the second switching element so that the first switching element and the second switching element operate at the same timing to apply a first input voltage to the first coil for induction heating and a second input voltage to the second coil for induction heating; and a voltage drop unit that steps down the first input voltage applied to the first coil for induction heating so that the first input voltage is lower than the second input voltage. | 01-08-2015 |
Minoru Akaishi, Ota-Shi JP
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20100164105 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - An object is to prevent a failure, such as a wiring separation or a crack, in an insulating film under a copper wire, in a semiconductor device formed by wire-bonding the copper wire on a portion above the copper wiring. A semiconductor device according to the present invention includes a copper wiring formed above a semiconductor substrate, a plated layer formed so as to cover a top surface and side surfaces of the copper wiring, and a copper wire which is wire-bonded on the plated layer above the copper wiring. | 07-01-2010 |
Minoru Akaishi, Kumagaya-Shi JP
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20110192093 | METHOD FOR PRODUCING SINTERED CUBIC BORON NITRIDE COMPACT - A method for producing a highly uniform and highly dense sintered cubic boron nitride compact having high hardness by sintering at a milder condition without a binder, is provided. The method includes deflocculating secondary particles in cubic boron nitride starting powders by dispersing the starting powders in a solution of a deflocculant; molding the green compact after removing the solution of the deflocculant from the starting powders; and then sintering the green compact in the presence of a supercritical fluid source in a supercritical state by pressing and heating the green compact together with the supercritical fluid source. The supercritical fluid source can be one or more selected from a group consisted of polyvinylidene chloride, polyvinyl chloride, polyethylene, polypropylene, polystyrene, a polyester and an ABS resin. In the sintering, the pressure is 5 GPa or higher, and the temperature is 1400° C. or higher. According to the method, a highly uniform and highly dense sintered cubic boron nitride sintered compact having high hardness, can be obtained. | 08-11-2011 |
Misaki Akaishi, Yokohama-Shi JP
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20140018235 | EXHAUST GAS PURIFYING CATALYST, EXHAUST GAS PURIFYING MONOLITH CATALYST, AND METHOD FOR MANUFACTURING EXHAUST GAS PURIFYING CATALYST - An exhaust gas purifying catalyst having a high purifying ability even if noble metal is not used as an essential component, an exhaust gas purifying monolith catalyst, and a method for manufacturing an exhaust gas purifying catalyst, are provided. The exhaust gas purifying catalyst includes an oxide having an oxygen storage and release capacity, and an oxide represented by the following formula (1) supported on the oxide having the oxygen storage and release capacity, | 01-16-2014 |
Misaki Akaishi, Yokosuka-Shi JP
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20150217275 | EXHAUST GAS PURIFICATION CATALYST, EXHAUST GAS PURIFICATION MONOLITH CATALYST, AND METHOD FOR PRODUCING EXHAUST GAS PURIFICATION CATALYST - An exhaust gas purification catalyst contains a first catalyst in which an oxide of general formula (1): La | 08-06-2015 |
Morihisa Akaishi, Osaka-Shi JP
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20130029013 | BOTTLED CARBONATED BEVERAGE CONTAINING SOYBEAN POWDER OR SOY MILK | 01-31-2013 |
Nobuyuki Akaishi, Kanagawa JP
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20080291240 | IMAGE FORMING APPARATUS - An image forming apparatus is disclosed. The image forming apparatus executes operations of idle ink ejection in which ink droplets not contributing to forming an image on a recording medium are ejected. When the operations of the idle ink ejection are executed before staring to print an image on a recording medium, the ink droplets are ejected into a cap member; in a case where the operations of the idle ink ejection are executed when a first predetermined period has passed after the last ejection of the ink droplets from the recording head, the ink droplets are ejected into an idle ink droplet receiving section; and in a case where the operations of the idle ink ejection are executed when a second predetermined period longer than the first predetermined period has passed as one of cleaning operations of the recording head, the ink droplets are ejected into the cap member. | 11-27-2008 |
20110050816 | IMAGE FORMING APPARATUS - An image forming apparatus is disclosed that includes the pressure adjusting valve including a movable member movably disposed in the pressure adjusting valve, a first throttling part; and a second throttling part, wherein the second throttling part is formed as a gap between an internal wall of the frame of the pressure adjusting valve and the movable member, an internal fluid resistance of the pressure adjusting valve varies in response to the flow rate of the liquid, and when the liquid is discharged from the nozzle, the liquid is fed from the liquid tank to the recording head by the liquid feeding unit in a state where the recording head is in fluid communication with the liquid tank via the pressure adjusting valve. | 03-03-2011 |
20150360190 | LIQUID STIRRER AND IMAGE FORMING APPARATUS INCLUDING SAME - A liquid stirrer includes a removable first liquid container to contain a liquid; a second liquid container having a capacity less than that of the first liquid container; a fluid path between the first liquid container and the second liquid container; a reversible pump disposed on the fluid path; a sensor to detect an amount of the liquid inside the second liquid container, in which the liquid reciprocally moves between the first liquid container and the second liquid container; and a controller to control the reversible pump, based on readings from the sensor, such that a moving amount of the liquid does not exceed the capacity of the second liquid container and that the second container does not go empty. | 12-17-2015 |
Nobuyuki Akaishi, Saitama JP
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20130014838 | RELIEF DEVICE FOR OIL PUMPAANM AKAISHI; NobuyukiAACI SaitamaAACO JPAAGP AKAISHI; Nobuyuki Saitama JPAANM Ikawa; MasatakaAACI SaitamaAACO JPAAGP Ikawa; Masataka Saitama JPAANM Ueta; YasuhiroAACI SaitamaAACO JPAAGP Ueta; Yasuhiro Saitama JPAANM Ishioka; TakujiAACI SaitamaAACO JPAAGP Ishioka; Takuji Saitama JPAANM Kamiyama; HidehikoAACI TochigiAACO JPAAGP Kamiyama; Hidehiko Tochigi JPAANM Yamazaki; TakuyaAACI TochigiAACO JPAAGP Yamazaki; Takuya Tochigi JPAANM Umezawa; YoshiroAACI GunmaAACO JPAAGP Umezawa; Yoshiro Gunma JPAANM Inoue; HirokazuAACI GunmaAACO JPAAGP Inoue; Hirokazu Gunma JPAANM Kurokawa; YoshitakaAACI GunmaAACO JPAAGP Kurokawa; Yoshitaka Gunma JP - A relief device includes a relief housing constituted by a relief inflow portion, a valve passage portion, a recess, and an oil discharge portion having a relief hole; a relief valve having a small-diameter portion between a first large-diameter portion and a second large-diameter portion; and a spring elastically biasing the relief valve toward the relief inflow portion. The recess is formed at a position that is closer to the relief inflow portion side than to the oil discharge portion, the axial length of the recess is larger than the axial length of the first large-diameter portion of the relief valve, and the shortest axial distance between the recess and the relief hole is less than the axial length of the small-diameter portion. | 01-17-2013 |
Nobuyuki Akaishi, Wako-Shi JP
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20130139781 | CYLINDER BLOCK AND METHOD OF MACHINING SAME - A machined shape of a bore is based on the deformation amount of a data-acquisition bore after fastening of cylinder head. A cross section of an approximate shape is set to be an approximately-true circle shape, and a diameter of the approximately-true circle shape is changed along a central axial direction in accordance with the deformation amount of the data-acquisition bore, to determine the approximate shape. The approximate shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis. Since the machined shape of the bore is the shape obtained by reversing a phase of a recess and a projection of the approximate shape about a predetermined cylindrical shape, the machined shape has a cross section having the approximately-true circle shape and has a simple shape which is symmetrical about the central axis. | 06-06-2013 |
20130146015 | BALANCER DEVICE FOR AN INTERNAL COMBUSTION ENGINE - In a balancer device ( | 06-13-2013 |
20140069366 | BALANCER DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A balancer housing ( | 03-13-2014 |
Shigeo Akaishi, Kiryu-Shi Gunma JP
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20130189498 | Woven Fabric Having Frill - A skirt having a fine frill, a blouse having a frill and the like can be easily manufactured at a low cost. A base cloth portion 1, a frill cloth portion 2 in number of tiers required to have a overlapping relationship with the base cloth portion 1 provided on the front side of the base cloth portion 1, a binding portion 3 binding the base cloth portion 1 and the frill cloth portion 2 by folded-weaving, and a connection portion 4 fabricated only by warps and provided so as to penetrate the base cloth portion 1 from the tip end on the side opposite to the binding portion 3 of the frill cloth portion 2 and to connect to one end of the binding portion 3 are woven continuously and integrally, where the connection portion 4 is cut and the frill cloth portion 2 is lifted up, and only by applying work such as merrow lock stitch or the like for preventing fraying of the tip end of the frill cloth portion 2, a fine frill can be created easily. | 07-25-2013 |
Shigeru Akaishi, Isesaki JP
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20090071735 | Controller of Field Winding Type Synchronous Motor, Electric Drive System, Electric Four Wheel Driving Vehicle, and Hybrid Automobile - An object of the present invention is to provide a controller of a field winding type synchronous motor that can stably output torque even if the d-axis current pulsates by reducing torque pulsation without causing fluctuations in the magnetic flux acting on the torque, and also provide an electric drive system, an electric four wheel driving vehicle, and a hybrid automobile. A motor control unit | 03-19-2009 |
Shinichi Akaishi, Yokosuka-Shi JP
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20080318771 | PARTICULATE MATTER (PM) OXIDIZING CATALYST - A particulate matter oxidizing catalyst includes: at least one metal selected from the group consisting of: gallium, manganese, iron, cobalt, nickel, copper, yttrium, zirconium, niobium, molybdenum, silver, lanthanum, praseodymium, neodymium and gold; and cerium, wherein a first oxide includes: the cerium, and a first metal which is at least one element selected from the group consisting of: gallium, manganese, iron, cobalt and nickel, wherein a second oxide includes: the cerium, and a second metal which is at least one element selected from the group consisting of: praseodymium, zirconium and aluminum, and wherein the second oxide and the first oxide have a content ratio of second oxide/(first oxide+second oxide)=0.1 by mass to 0.8 by mass. | 12-25-2008 |
Takahisa Akaishi, Kawasaki-Shi JP
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20120281243 | DATA PROCESSING SYSTEM AND DATA PROCESSING METHOD - The present invention has an objective of providing an image formation apparatus that can output binary image data on a printing medium with a favorable quality. According to the present invention, a plurality of different pieces of mask data stored in a storage unit is used to generate a plurality of different pieces of divided data. Then, the frequency characteristic information of the respective plurality of generated thinned images is calculated. Thereafter, the pieces of frequency characteristic information of the respective plurality of generated thinned images are compared to select, from among the plurality of pieces of mask data stored in the storage unit, a divided mask pattern to be used for the input image data. Then, the selected divided mask pattern is used to form the image. | 11-08-2012 |
20140043628 | IMAGE PROCESSING APPARATUS AND METHOD - An apparatus sets a chromaticity point serving as a gray reference in a color gamut of a color space that an output device is able to output, specifies, in the color gamut of the color space that the output device is able to output, a first minimum lightness point on a lightness axis of the set chromaticity point and a second minimum lightness point that is achromatic, and generates a gray line that passes through a black point that is a minimum lightness point on a line connecting the first minimum lightness point and the second minimum lightness point, the first minimum lightness point, and the set chromaticity point and reaches a white point in the color gamut of the color space that the output device is able to output. | 02-13-2014 |
20140055818 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM STORING A PROGRAM - An image processing apparatus acquires monochrome image data and, for a pattern of each parameter, converts the acquired monochrome image data into intermediate image data. The intermediate image data is expressed in a set of signal values of a plurality of color elements. | 02-27-2014 |
Takanori Akaishi, Tokushima-Shi JP
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20160126435 | LIGHT EMITTING DEVICE - A light emitting device includes an electrically conductive member, a light emitting element, a wire, and a sealing member. The wire contains gold and silver and connects the electrically conductive member and the light emitting element. The wire includes a ball portion and a recrystallized region. The ball portion is provided on an electrode of the light emitting element. The recrystallized region is provided on the ball portion and has a length in a range of 50 μm to 90 μm. The sealing member has a lower surface and an upper surface opposite to the lower surface and covers the light emitting element and the wire so that the lower surface faces the electrically conductive member and the light emitting element and so that a distance from a top of the ball portion to the upper surface of the sealing member is 90 μm to 230 μm. | 05-05-2016 |
Takayuki Akaishi, Toyota-Shi, Aichi-Ken JP
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20160124053 | BATTERY DEGRADATION DETECTION DEVICE - Provided is a battery degradation detection device that detects the degradation state of a battery installed on a vehicle. The battery degradation detection device includes: a flag setting unit that sets, each time the vehicle is started, a flag indicating a sign of degradation of the battery on the basis of a voltage value of the battery at the start of the vehicle; a flag storage unit that stores the flag; a sign-of-degradation determination unit that determines whether or not the battery shows a sign of degradation on the basis of the number of times the flag has been stored in the past; and a degradation determination unit that determines whether or not the battery is in a degradation state on the basis of the voltage value of the battery when it is determined by the sign-of-degradation determination unit that the battery shows a sign of degradation. | 05-05-2016 |
Tetsuhito Akaishi, Okayama JP
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20090250884 | Process for Producing Gasket and Gasket - A production method of an annular gasket comprising a metal base and an elastic seal layer laminated to each side thereof, comprising the steps of subjecting a metal sheet to punching out process to obtain a plurality of divided constituent members for the metal base, each of the divided constituent member having a slightly wider width than a given gasket width and a predetermined shape for constituting an annular shape of the given gasket, butting these constituent members to temporarily configure the annular shape and bonding the butt parts to each other by welding to form an annular object, subsequently laminating an elastic compound material to each side of the annular object to form elastic seal layers after applying pressurizing process to the annular object, and punching a given shape out of the annular object to obtain the annular gasket. | 10-08-2009 |
Yoshio Akaishi, Hitachinaka-Shi JP
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20090002974 | Power Converter Unit - A power converter unit has a metal case; a power module having a plurality of power semiconductor devices that is provided inside the metal case; a gate drive circuit board having a circuit for driving the plurality of the power semiconductor devices that is mounted on the power module; a voltage sensor that is mounted on the gate drive circuit board; a metal plate for electrically connecting the metal case with the gate drive circuit board; screws and soldered parts for fixing the metal plate to the gate drive circuit board; a first wiring that is set up on the gate drive circuit board for electrically connecting the voltage sensor with the soldered parts; and a second wiring that is set up on the gate drive circuit board for electrically connecting the screws and the soldered parts. | 01-01-2009 |
20120001574 | Electric Power Conversion System and Electric Power Conversion Device - According to the present invention, an electrical power conversion system includes: a motor; an inverter circuit that outputs three-phase (U-phase, V-phase, W-phase) alternating currents to the motor; a current sensor that detects each of the three-phase alternating currents; and a control circuit that controls the inverter circuit based on a torque command value and values detected by the current sensor, so that the three-phase alternating currents outputted from the inverter circuit are formed as sine waves; and wherein the control circuit includes: a current component extraction unit that, based on the values detected by the current sensor, for each phase, extracts current components superimposed upon each of three-phase alternating currents; and an AC current abnormality detection unit that detects abnormality of an AC current flowing to the motor, based on the phases of the current components for any two phases among the three-phase alternating currents. | 01-05-2012 |
20150106043 | Overcurrent Fault Detection Device for Electrical Drive Control System - An overcurrent fault detection device includes: an inverter converting DC current to three-phase AC currents for driving a motor; a DC voltage detector; phase current detectors; a rotational position detector that detects a rotational angle of the motor; a control circuit that controls a gate drive circuit, which controls the inverter at every predetermined cycle, based upon the phase current values, a motor rotational angle detection value, and a speed command or a torque command from a higher-order control device; and a decision-making circuit that detects an overcurrent based upon the phase current values at every predetermined cycle, wherein: the decision-making circuit determines whether or not the phase current values exceed a predetermined amplitude threshold value by frequency detection for any of the phase current values exceeding the predetermined amplitude threshold value, and determines that an overcurrent has occurred upon detecting the frequency. | 04-16-2015 |
Yoshio Akaishi, Ibaraki JP
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20110199800 | Power Conversion Device - Connection portions ( | 08-18-2011 |
20120020136 | Electric Power Conversion System - A power conversion system according to the present invention includes: an inverter circuit unit that converts a direct current power supplied from a direct current source into an alternating current power, the direct current power being supplied to the inverter circuit through a contactor that conducts and interrupts the direct current; a capacitor that smoothes the direct current power; a discharge circuit unit that is connected to the capacitor in parallel, and that includes a discharge resistor for discharging a charge stored in the capacitor and a switching element for the discharge resistor, being connected in series to the discharge resistor; a voltage detection circuit unit that detects voltage between both terminals of the capacitor; a first discharge control circuit that includes a first microcomputer, and that outputs a control signal to control switching of the switching element for discharging; and a second discharge control circuit that outputs an interruption signal to interrupt the switching element for the discharge resistor. | 01-26-2012 |
Yoshio Akaishi, Hitachinaka JP
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20130088279 | Power Converter - The present invention provides a power converter including a power semiconductor device, a driver circuit section that outputs a driving signal for driving the power semiconductor device, a buffer circuit section that includes a PNP transistor and an NPN transistor and that outputs a gate voltage for driving the power semiconductor device, a first delay circuit section that receives the driving signal and that generates a first delay signal on the basis of the received driving signal, a first MOSFET that has a drain electrode connected with the output of the buffer circuit section and that is driven on the basis of the first delay signal. A current flows through the buffer circuit section and the first MOSFET on the basis of the received driving signal, the first delay circuit section outputs the first delay signal after the buffer circuit section exits the transient state and turns on, and the gate voltage is applied to the power semiconductor device from the buffer circuit section to turn the power semiconductor device on by the switching operation of the first MOSFET based on the first delay signal. | 04-11-2013 |
20140085762 | Inverter Drive Device - An inverter drive device includes a drive circuit that outputs a gate voltage signal of a power semiconductor element; and a Zener clamping protection circuit that acquires an emitter electrode side voltage of the power semiconductor element, and, if that voltage is greater than a predetermined voltage value, performs clamping of the gate voltage of the drive circuit after a predetermined time interval has elapsed from the acquisition of the emitter electrode side voltage. The Zener clamping protection circuit includes a latch circuit that, after the emitter electrode side voltage has been acquired, continues the clamping of the gate voltage by the Zener clamping protection circuit during an interval. | 03-27-2014 |