Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8169799 | Power factor correction circuit A power factor correction circuit steps up and power-factor-corrects a rectified voltage, which has been rectified from an AC input voltage of an AC power source Vin, through an ON/OFF operation of a switching element Q1 and supplies a stepped-up output volta... | 05/01/2012 |
| 8169765 | High-side driver A high-side driver has a semiconductor element being connected in series in a power supply path extending from a DC power source to a linear solenoid and turned on/off to control a current of the linear solenoid. The high-side driver includes a current detector of a... | 05/01/2012 |
| 8169151 | DC/AC converter and controller thereof A DC/AC converter includes a resonant circuit having a first capacitor connected to at least one of a primary winding and a secondary winding of a transformer and an output end connected to a load, the resonant circuit receiving an alternating signal having a predet... | 05/01/2012 |
| 8166946 | Diesel engine start-up assisting device A diesel engine start-up assisting device includes a plurality of first-and-second switching elements 11a to 11d between a common direct-current power source 1 and a plurality of electrical load 3a to 3d... | 05/01/2012 |
| 8159145 | Synchronous operating system for discharge tube lighting apparatuses, discharge tube lighting apparatus, and semiconductor integrated circuit A synchronous operating system for operating a plurality of discharge tube lighting apparatuses at the same frequency and same phase includes (1) an oscillator of a triangular wave signal whose inclination for charging a capacitor C2 and inclination for disch... | 04/17/2012 |
| 8159004 | Compound semiconductor device having dopant concentration gradient A semiconductor device includes a first compound semiconductor layer having a two-dimensional carrier gas channel, a second compound semiconductor layer which functions as a barrier layer and is arranged above the first compound semiconductor layer, a first main ele... | 04/17/2012 |
| 8154118 | Semiconductor device A semiconductor device (10) includes: an base substance (15) having a ferromagnetic material; a first semiconductor chip (11) and a second semiconductor chip (12) installed on the base substance (15); a first coil (131) inst... | 04/10/2012 |
| 8143650 | Semiconductor device having resistance layer formed on side surface of semiconductor layer A semiconductor device 1 includes a substrate 2 having on a main surface thereof a central area and a peripheral area which surrounds the central area and is exposed, a semiconductor layer 4 which is formed on the main surface of the substrate | 03/27/2012 |
| 8143645 | Semiconductor device having a stacked multi structure that has layered insulated gate-type bipolar transistors Each of first base regions of sequentially layered first IGBT and second IGBT has a peripheral section in the vicinity of the side face of the semiconductor substrate. Each of the IGBTs includes a P-type peripheral base region that is adjacent to the peripheral sect... | 03/27/2012 |
| 8138737 | Duty cycle controller for power factor correction circuit A power factor correction circuit includes a first rectifier to rectify an AC voltage, a series circuit connected to an output of the first rectifier and including a step-up reactor and a switching element, a rectifying-smoothing circuit connected to both ends of th... | 03/20/2012 |
| 8125022 | Semiconductor device and method of manufacturing the same A semiconductor device 1 includes a first semiconductor region 2B and a second semiconductor region 5 provided on a main surface of a substrate 2, being apart from each other and having first conductivity; a third semiconductor region ... | 02/28/2012 |
| 8111053 | DC-DC converter The present invention provides a DC-DC converter including a first series circuit connected to both ends of a first switch and formed of a winding of a first transformer, a first reactor, a first diode, and a smoothing capacitor, a second diode connected to a connec... | 02/07/2012 |
| 8089078 | Light emitting device A light emitting device includes: a first semiconductor region; a second semiconductor region and third semiconductor region which are provided in the first semiconductor region; a first semiconductor light emitting element of which first electrode is electrically c... | 01/03/2012 |
| 8063569 | Discharge tube power supply apparatus and semiconductor integrated circuit An AC conversion circuit includes a main transformer having a primary winding and a secondary winding to electrically insulate the AC power source side and the discharge tube side from each other, an IC1 arranged on the AC power source side, a plurality of sw... | 11/22/2011 |
| 8063507 | Multiple output switching power source apparatus A multiple output switching power source apparatus includes first and second transformers each having a primary winding, a first secondary winding, and a second secondary winding; a first control circuit adjusting a time for applying a DC voltage to the primary wind... | 11/22/2011 |
| 8059430 | High efficiency DC-DC converter for reduced switching loss A DC-DC converter includes: a first series circuit in which a resonance reactor, a primary winding of a transformer, and a switching element are connected in series, the first series circuit being connected to both ends of a direct current power supply; a second ser... | 11/15/2011 |
| 8054600 | Switching power supply device A switching power supply device includes: a switching element connected through a primary winding of a transformer to an output end of an input rectifying/smoothing circuit that rectifies and smoothes an alternating current input voltage and outputs a direct current... | 11/08/2011 |
| 8054008 | Power converter The present invention includes a first DC converter converting AC voltage, into DC voltage while correcting a power factor, and a second DC converter electrically isolating the first DC converter from an LED group load, and converting the DC voltage, into a predeter... | 11/08/2011 |
| 8053830 | Semiconductor device A semiconductor device including a semiconductor section including a semiconductor element and a recess formed in one of main surfaces and a metallic member at least a part of which is embedded in the recess. A void is formed in a region of the metallic member corre... | 11/08/2011 |
| 8049435 | Frequency synchronizing method for discharge tube lighting apparatus, discharge tube lighting apparatus, and semiconductor integrated circuit An oscillator generates a triangular wave signal whose inclination for charging a capacitor and inclination for discharging the same are the same and which is used to turn on/off FETs Qp1 and Qn1. A signal generation part generates first drive signal i... | 11/01/2011 |
| 8039322 | Semiconductor device and manufacturing method thereof A manufacturing method of a semiconductor device 10 includes forming a plurality of second conductive second semiconductor regions at specific intervals on one main surface of a first conductive first semiconductor region, the plurality of second conductive s... | 10/18/2011 |
| 8035366 | Driving circuit of load A driving circuit of a load has an output semiconductor element connected in series in a power supply path from a power source to the load, to control a current of the load, a PWM signal generator for controlling ON/OFF of the output semiconductor element, a driver ... | 10/11/2011 |
| 8009445 | Switching power source apparatus A switching power source apparatus includes a switching element connected through a primary winding of a transformer to a voltage terminal of a DC input voltage, a rectifying-smoothing circuit to rectify and smooth a voltage induced by a secondary winding of the tra... | 08/30/2011 |
| 8008945 | Level-shift circuit A level-shift circuit converts a first voltage level into a second voltage level different from the first voltage level. The level-shift circuit includes a first high-side signal detection circuit, a second high-side signal detection circuit, a drive circuit and ele... | 08/30/2011 |
| 8008655 | Nitride compound semiconductor device including organic semiconductor layer under gate electrode A nitride compound semiconductor device includes a semiconductor layer including a group III nitride compound semiconductor, source and drain electrodes provided on the semiconductor layer, an insulating film provided on the semiconductor layer between the source el... | 08/30/2011 |
| 7989816 | Semiconductor device A semiconductor device is, constituted by: a nitride group semiconductor functional layer which includes a first nitride group semiconductor region, a second nitride group semiconductor region provided on the first nitride group semiconductor region by a hetero junc... | 08/02/2011 |
| 7986104 | Discharge lamp lighting apparatus A discharge lamp lighting apparatus includes a first inverter, a second inverter to output a voltage whose phase is opposite to that of a voltage provided by the first inverter, a discharge lamp connected between a first output terminal of the first inverter and a f... | 07/26/2011 |
| 7982415 | Discharge lamp lighting apparatus A discharge lamp lighting apparatus includes a switch circuit for DC/AC converting, a discharge lamp connected to a secondary winding of a transformer, a current detector detecting an AC output current of the discharge lamp, an error amplifier outputting an error si... | 07/19/2011 |
| 7964931 | Semiconductor device A semiconductor device 1 includes a square substrate 2, first RESURF structures 3 in the shape of planar stripes on an element area 10 of a main surface of the substrate 2, a transistor T arranged between the first RESURF structure... | 06/21/2011 |
| 7952334 | DC-DC converter A DC-DC converter includes a series circuit of a switch element Q1 and a switch element Q2 connected to a DC power source, a series circuit of a primary winding P1 of a transformer and a capacitor connected in parallel with one of the switch ele... | 05/31/2011 |
| 7944085 | Multiple output switching power source apparatus including multiple series resonant circuits A multiple output switching power source apparatus includes first and second switching elements Q1 and Q2, a first series resonant circuit connected in parallel with Q1 or Q2 and having a first current resonant capacitor and a primary win... | 05/17/2011 |
| 7928701 | AC-DC converter An AC-DC converter includes a rectifier DB for rectifying an alternating current supplied from an alternating power source AC, a power factor controller 11a connected to an output side of the rectifier DB to improve a power factor and also output eithe... | 04/19/2011 |
| 7915875 | Current-mode controlled DC-DC converter A current-mode controlled DC-DC converter includes a comparator comparing a first or second current detection signal with a first or second reference current that is based on an error voltage of a voltage detection signal, a pulse generator generating a first pulse ... | 03/29/2011 |
| 7893450 | Semiconductor light-emitting element and semiconductor light-emitting element manufacturing method An aspect of the present invention inheres in a semiconductor light-emitting element includes a light-emitting functional stacked body including a light-emitting region having a light-emitting function, and including a light extraction surface for extracting light e... | 02/22/2011 |
| 7888985 | Level shift circuit A level shift circuit shifts a first voltage level to a second voltage level that is different from the first voltage level. The level shift circuit includes a set-level circuit 21 configured to detect and transmit a set signal that is used to set a logic vol... | 02/15/2011 |
| 7888887 | Luminescent lamp lighting device A luminescent lamp lighting device includes a plurality of switch circuits 3, 4 each connected to each of luminescent lamps 5, 6 in series under one-to-one correspondence, a plurality of optical coupling circuits 9, 10 each connected to each of ... | 02/15/2011 |
| 7881082 | Power conversion apparatus and method of controlling the same A power conversion apparatus includes a series circuit having a first switching element and a second switching element, the series circuit being connected to a DC power source in parallel, a resonant circuit including a capacitor and a primary winding of a transform... | 02/01/2011 |
| 7859138 | Drive circuit A drive circuit for a switching circuit has a high-side drive circuit to turn on/off, according to a control signal, a switching element QH arranged on a high side of a DC power source Vin and a low-side drive circuit to turn on/off alternately with the switching el... | 12/28/2010 |
| 7839659 | Alternating current power supply device and integrated circuit for alternating current power supply device An alternating current power supply device is provided with switch elements Q1, Q2 for converting direct current power from a direct current power supply Vin into alternating current power; a transformer T1 for converting the voltage of the alte... | 11/23/2010 |
| 7838906 | Semiconductor device and method of manufacturing the same A semiconductor device 1 includes a substrate 2 having on a main surface thereof a central area and a peripheral area which surrounds the central area and is exposed, a semiconductor layer 4 which is formed on the main surface of the substrate | 11/23/2010 |
