Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8164118 | Semiconductor device and its manufacturing method An object of the present invention is to reduce on-state resistance and increases reliability in a semiconductor device having an electrode formed in a recessed structure. As illustrated in FIG. 1B, a first insulating layer 103 is formed. Then, as illu... | 04/24/2012 |
| 8022642 | Discharge lamp lighting device A discharge lamp lighting device is provided to comprise tube current detecting circuits 51 to 5n for outputting detection signals VI1 to VIn of tube currents I1 to In flowing through ea... | 09/20/2011 |
| 8009007 | Inductance part Since there exists a draw-out portion of a triple insulated wire in a winding structure of a transformer in which the triple insulated wire is used as a secondary winding, the thickness of the transformer is increased by an amount corresponding to the wire diameter ... | 08/30/2011 |
| 7990674 | Load drive apparatus A load drive apparatus is provided which comprises a switching element 3 connected in series to a DC power source Vcc and an electric load 4, a drive circuit 5 for generating control signals to turn switching element 3 on and o... | 08/02/2011 |
| 7906904 | Light permeable fluorescent cover for light emitting diode A light permeable fluorescent cover 6 is provided that comprises a fluorescent material 7 contained in the cover 6 attached on a light emitting diode for emitting a first light with a first peak in blue wavelength range of 420 nm to 480 nm. The ... | 03/15/2011 |
| 7847316 | Semiconductor device and its manufacture A reliable semiconductor device is provided which comprises lower and upper IGBTs 1 and 2 preferably bonded to each other by solder, and a wire strongly connected to lower IGBT 1. The semiconductor device comprises a lower IGBT 1, a lower... | 12/07/2010 |
| 7825608 | Multi-discharge tube lighting apparatus A multi-discharge tube lighting apparatus connectable to a power source comprising a first output terminal and a second output terminal respectively outputting voltages of opposite phases, the lighting apparatus comprises first to n-th discharge tube units where n r... | 11/02/2010 |
| 7821036 | Semiconductor device and method for manufacturing the same A semiconductor device (10) comprises a substrate (11), a semiconductor layer (12), an insulation film (13), a protective film (15), a source electrode (21), a drain electrode (22), a gate electrode (23). The s... | 10/26/2010 |
| 7821025 | Semiconductor light emitting unit, method for manufacturing same and linear light source A semiconductor light emitting unit is provided which comprises: a support 1 formed with longitudinal side walls 15 disposed opposite to each other for forming a pair of light reflective surfaces 9, and a bottom wall 16 connected to longi... | 10/26/2010 |
| 7773398 | DC power source device with timer controlled synchronous rectifiers in the secondary A DC power source device is provided which comprises conduction detectors 17, 18 for producing detection signals VP1, VP2 during the detective period of rectification MOS-FETs 15, 16 and timer circuits 19, 20 connected to p... | 08/10/2010 |
| 7768801 | Current resonant DC-DC converter of multi-output type A current resonant DC-DC converter of multi-output type is provided which comprises an output-regulatory MOS-FET 40 connected between a secondary winding 5c of a transformer 5 and a smoothing capacitor 16 in a second rectifying smo... | 08/03/2010 |
| 7764089 | Device for driving switching elements A device for driving switching elements is provided with a potential detector 29 which provides drive circuit 30 with signals in response to differences among potentials at junctions 17 to 20 of first and third resistors 13, 15, th... | 07/27/2010 |
| 7759697 | Semiconductor device A semiconductor device is provided which comprises a thermally radiative and electrically conductive support plate 1; and a regulatory semiconducting element 2 mounted on one main surface of support plate 1 through an insulator 3. Insulat... | 07/20/2010 |
| 7709856 | Semiconductor light emitting device excellent in heat radiation A semiconductor light emitting device is provided which comprises: a semiconductor light emitting chip 2 mounted on a top surface 12 of a support plate 1, wiring conductors 3 disposed adjacent to side surfaces 11 of support plate | 05/04/2010 |
| 7643314 | Resonant switching power source having first and second switching elements connected in series to a DC power source The transformer 5 used for the present invention, comprises a core of E-shaped first and second core halves 5g, 5h coupled together in opposed relation to each other to form a closed magnetic circuit or circuits for supporting prim... | 01/05/2010 |
| 7642556 | Compound semiconductor element resistible to high voltage A compound semiconductor element is provided which electrically connects an electrode 3 formed on one main surface 2a of a compound semiconductor region 2 with a substrate 5 to fix an electric potential of substrate 5 at an ... | 01/05/2010 |
| 7639516 | Switching power source device The ON duration of an N channel MOS transistor is set based on a target voltage at a node between a resistor and a light receiving element of a photocoupler. A comparator compares the target voltage with a reference voltage at a node between a variable resistor and ... | 12/29/2009 |
| 7633776 | DC-DC converter for overvoltage protection A DC-DC converter for overvoltage protection is provided with a primary control circuit 12 which comprises an impedance controller 31 and a protective circuit 41 for ceasing operation of primary control circuit 12 when power source voltag... | 12/15/2009 |
| 7608918 | Semiconductor device A semiconductor device is provided which comprises a heat-radiative support plate 5; and first and second semiconductor elements 1 and 2 mounted and layered on support plate 5 for alternate switching of first and second semiconductor elem... | 10/27/2009 |
| 7605548 | Electricity controller, device for lighting discharge tube, display device and electric power control method An electricity controller is provided which comprises a first power control means for controlling output power from power generator 4 to a first level during a first period of start-up time for feeding, a second power control means for controlling output powe... | 10/20/2009 |
| 7592683 | Semiconductor device with improved electrostatic tolerance A semiconductor device comprises a P−-type semiconductor substrate (15), an N−-type semiconductor substrate (21) formed on the P−-type semiconductor substrate (15), an upper P-type semiconductor region (... | 09/22/2009 |
| 7583057 | Voltage balance circuit, voltage detecting circuit, voltage balancing method, and voltage detecting method When a control section (39) turns on a switch (31, 33, 35), a capacitor (37) is connected to a secondary battery (B1) in parallel. Accordingly, voltage between both ends of each capacitor (37, 38) reaches voltage between both polar... | 09/01/2009 |
| 7567443 | Power converter A power converter is provided which comprises two main MOS-FETs 4, 5 connected in series to a DC power source 1; an oscillator 2 which has two capacitors 3a, 3b connected in parallel to main MOS-FETs 4, 5; a pr... | 07/28/2009 |
| 7564197 | Discharge tube operation device A time division signal (S2) for instructing a lit period and an unlit period of a discharge tube (23) is input to an error amplifier (41) of an integration circuit (40). The integration circuit (40) charges and discharges a capacit... | 07/21/2009 |
| 7560737 | Semiconductor light emitting element and fabrication method thereof In a semiconductor light emitting element, multiple bosses having a cylindrical shape and dispersed like islands, and recesses are formed on the upper surface of a window layer. A contact electrode is formed on the upper surface of the bosses. A transparent dielectr... | 07/14/2009 |
| 7542313 | Induction heating apparatus capable of stably operating at least one switching element contained therein An induction heating apparatus capable of stably operating at least one switching element contained therein is provided with a control circuit 5 which comprises a resonance waveform detector 6 for detecting a high frequency AC waveform supplied from an... | 06/02/2009 |
| 7542308 | DC-DC converter A DC-DC converter is provided with a control circuit 6 which comprises a drive signal generator 11 for producing on-off signals to a control terminal of a MOS-FET 3 in synchronization with pulse signals VOSC from an oscillator 10 | 06/02/2009 |
| 7521755 | Trench semiconductor device of improved voltage strength, and method of fabrication A trench IGBT is disclosed which includes a semiconductor substrate having formed therein a set of cell trenches formed centrally and a set of annular guard trenches concentrically surrounding the cell trenches. The cell trenches receive cell trench conductors via c... | 04/21/2009 |
| 7518154 | Nitride semiconductor substrate and semiconductor element built thereon A substrate system of the kind having a buffer region interposed between a silicon substrate proper and a nitride semiconductor region in order to make up for a difference in linear expansion coefficient therebetween. Electrodes are formed on the nitride semiconduct... | 04/14/2009 |
| 7511316 | Semiconductor device resistive to high voltage and capable of controlling leakage current A semiconductor device is provided which comprises a periphery region 23a extending downward from a third semiconducting region 23, enveloping an outer surfaces 21a and 22b of first and second semiconducting regions | 03/31/2009 |
| 7470956 | Semiconductor device and manufacturing method thereof A semiconductor device has a semiconductor base, an anode electrode, and a cathode electrode. The semiconductor base includes a P type semiconductor substrate, an insulating film, an N− type semiconductor region formed on the insulating film, an N+... | 12/30/2008 |
| 7429757 | Semiconductor light emitting device capable of increasing its brightness A semiconductor light emitting device comprises a metallic support plate 1; a light-reflective reflector 3 mounted on the support plate 1 and formed with a hole 3a; a semiconductor light emitting element 2 mounted on the sup... | 09/30/2008 |
| 7423857 | Current detecting circuit and actuator driving apparatus By switching the NMOS (11) on and off, a drive current passes through a solenoid (15). The drive current passes through a conversion circuit (16), and an amplifier circuit (17) outputs a current detection result by amplifying the output v... | 09/09/2008 |
| 7405431 | Light-emitting semiconductor device having an overvoltage protector An LED includes a light-generating semiconductor region having an active layer sandwiched between two confining layers of opposite conductivity types for generating light. A cathode is arranged centrally on one of the opposite major surfaces of the semiconductor reg... | 07/29/2008 |
| 7400000 | Nitride-based semiconductor device A light-emitting diode is built on a silicon substrate doped with a p-type impurity to possess sufficient conductivity to provide a current path. The p-type silicon substrate has epitaxially grown thereon two superposed buffer layers of aluminum nitride and n-type i... | 07/15/2008 |
| 7394670 | Switching power source A control circuit 8 of a switching power source comprises a voltage detector 31 for detecting a voltage VDC of a DC power supply 1 to produce a detection voltage VDT; a comparator 41 for producing an output signal V | 07/01/2008 |
| 7391631 | Switching power source device A switching power source device is provided which comprises a drive controller 40 connected between an error amplifier 26 and changeover circuit 37. A second comparator 52 of drive controller 40 compares an output voltage or an equ... | 06/24/2008 |
| 7382000 | Semiconductor device A semiconductor device is provided which comprises a connecting lead 4 mounted between a MOS-FET 1 and a regulatory IC 2 on a support plate 3. Connecting lead 4 has a thermally radiative and electrically conductive substrate 6 | 06/03/2008 |
| 7372710 | Switching power source device of the type capable of controlling power loss in generating output voltage from a secondary winding of a transformer A switching power source device is provided which comprises a secondary MOS-FET 9 connected between a secondary winding 6 of a transformer 2, a reactor 11 connected in parallel to secondary winding 6 of transformer 2 for acc... | 05/13/2008 |
| 7339800 | Switching power source device of resonance type capable of controlling switching loss and noise A switching power source device of resonance type is provided which comprises an output voltage detector 18 for detecting output voltage on a load 13 to produce a detection signal; and a control circuit 2 for applying on-off signals Vg1 | 03/04/2008 |
