46results about How to "Wide range of variation" patented technology

A surface-mount microconverter is formed by mounting a microinductor chip and a semiconductor integrated circuit chip on a circuit board. Stud terminals are arranged on the circuit board and the microinductor chip is supported on the stud terminals, and the microinductor chip and the semiconductor integrated circuit chip are superposed on the circuit board. The microconverter has an improved ability and is small and thin. The microconverter includes an effective laminated magnetic-core inductor. The inductor comprises a helical coil formed by uniting alternately superposed insulating magnetic layers and conductive pattern layers, and an annular closed magnetic path formed by the insulating magnetic layers and defining a magnetic field created by the coil. The inductor can be miniaturized in a thin chip, and a wide range in which magnetic flux density varies linearly can be secured by balancing a closed magnetic path for a magnetic field created by the coil.

A sealing technique is provided for forming complex and multiple seal configurations for fuel cells and other electrochemical cells. To provide a seal, for sealing chambers for oxidant, fuel and/or coolant, a groove network is provided extending through the various elements of the fuel cell assembly. A source of seal material is then connected to an external filling port and injected into the groove network, and the seal material is then cured to form the seal. There is thus formed a “seal in place”, that is robust and can accommodate variations in tolerances and dimensions, and that can be bonded, where possible, to individual elements of the fuel cell assembly. This avoids the difficulty, labor intensive cost and complexity of manually assembling many individual gaskets into complex groove shapes and the like. The seal material can be selected to be comparable with a wide variety of gases, liquid coolants and the like.

A light oscillation part including an active layer for generating light by current injection, a tuning layer with an intermediate layer formed between the active layer and the tuning layer, for varying an oscillation wavelength by current injection and a diffraction grating formed near the active layer and the tuning layer, and a light amplification part including an active layer for amplifying light by current injection are formed on a semiconductor substrate. Light oscillation elements having wide wavelength variation ranges and the light amplification are integrated on a semiconductor substrate, whereby wide wavelength variation ranges can be obtained and the output light can be much increased.

A sealing and repair technique is provided for forming complex and multiple seal configurations for fuel cells and other electrochemical cells. To provide a seal, for sealing chambers for oxidant, fuel and/or coolant, a groove network is provided extending through the various elements of the fuel cell assembly. A source of seal material is then connected to an external filling port and injected into the groove network, and the seal material is then cured to form the seal. There is thus formed a “seal in place”, that is robust and can accommodate variations in tolerances and dimensions, and that can be bonded, where possible, to individual elements of the fuel cell assembly. To repair part of an electrochemical cell stack, some elements are removed and either repaired or replaced. The cell assembly is then put together again and a bore is provided for injection of fresh seal material. This bore can either have been formed in the original assembly or is formed by mechanical removal of part of the original seal material

The variable transconductance circuit includes: a voltage-current conversion circuit for outputting a current signal linear with an input voltage signal; first and second MOS transistors for converting the current signal received to a square-root compressed voltage signal; and third and fourth MOS transistors for converting the square-root compressed voltage signal to a linear current signal. A bias current at the first and second MOS transistors and a bias current at the third and fourth MOS transistors are varied to control transconductance.

A variable resonator has a dielectric substrate 2, an input/output line 3 formed on the dielectric substrate 2, a first resonator 4 that has one end connected to the input/output line 3 and the other end grounded, and a second resonator that has one end connected to the input/output line 3 at the point of connection of the one end of the first resonator 4 and the other end grounded via a terminal switch 7. When the terminal switch 7 is turned off, resonance occurs at a frequency at which the sum of the line lengths of the first resonator 4 and the second resonator 6 equals to a quarter of the wavelength. When the terminal switch 7 is turned on, resonance occurs at a frequency at which a half of the sum of the line lengths equals to a quarter of the wavelength.

A DC-DC converter includes a full-bridge circuit connected to a primary winding of a transformer and a full-bridge circuit connected to a secondary winding of the transformer. The full-bridge circuit includes a first series circuit including a first set of switching elements, a second series circuit including a second set of switching elements, a first charge-discharge capacitor connected to a node between a first pair of the first switching elements and a node between a second pair of first switching elements, and a second charge-discharge capacitor connected to a node between the a first pair of the second switching elements and a node between a second pair of the second switching elements. The full-bridge circuit can operate in one of a full-bridge operation mode and a half-bridge operation mode. The disclosed DC-DC converter can constantly operate with high efficiency even when the variation range of a load is wide.

An analysis apparatus includes an electric field enhancing element including a metallic layer, a transmissive layer on the metallic layer and transmitting excitation light, and metallic particles on the transmissive layer with first and second pitches in first and second directions; a light source irradiating the element with first direction linearly polarized light, second direction linearly polarized light, and/or circularly polarized light as the excitation light; and a detector detecting light from the element. The pitches are selected relative to the pitch of a diffraction grating. The thickness of the transmissive layer is selected relative to the wavelength of the excitation light.

The invention discloses a dual-mode composite infrared electric control liquid crystal micro-lens array chip which comprises a chip shell, an electric control light divergence liquid crystal micro-lens array and an electric control light condensation liquid crystal micro-lens array. The electric control light divergence liquid crystal micro-lens array and the electric control light condensation liquid crystal micro-lens array are in cascade coupling connection to form a dual-mode composite electronic speed controller framework. The electric control light divergence liquid crystal micro-lens array and the electric control light condensation liquid crystal micro-lens array are both arranged inside the chip shell, are tightly attached to each other and are connected with the chip shell. The optical axis of the electric control light divergence liquid crystal micro-lens array coincides with the optical axis of the electric control light condensation liquid crystal micro-lens array. The light incident plane of the electric control light divergence liquid crystal micro-lens array and the light emergent plane of the electric control light condensation liquid crystal micro-lens array are exposed out through an opening in the top face of the chip shell and an opening in the bottom face of the chip shell respectively. The dual-mode composite infrared electric control liquid crystal micro-lens array chip is compact in structure, capable of being used for forming various light beam forms, better in light field adaptability compared with a conventional electric control liquid crystal micro lens, high in control precision and capable of being coupled with a conventional infrared optics and optoelectronic mechanical structure easily.

The invention relates to a device (1), method, computer program, and a computer program product for monitoring objects, in particular for monitoring scenes of objects captured on video. An object is thereby repeatedly detected and tracked, wherein a tracking device (7) is fed back to a device for object model selection (5), so that when detected repeatedly, considering tracking parameters determined when tracking the object, the tracking parameters are fed to the selection device (5) and can be considered for detecting.

The LC-VCO is provided with two negative resistance units and an LC circuit unit. The LC circuit unit has two output terminals. An inductor is connected between the output terminals, and a series of variable capacitors is connected in parallel with the inductor. In the LC circuit unit, a variable capacitor is connected between one of the output terminals and a node. Another variable capacitor is connected between the other output terminal and another node. Switches are connected between the nodes and a ground potential line, respectively, and between the nodes and a power supply potential line, respectively.

The invention belongs to the fields of paddy rice improvement and biological technology application, and specifically relates to a breeding method utilizing wild rice resource to create japonica-type novel paddy rice species. The method comprises the following steps: S1, extracting DNA genome from wild rice; S2, introducing DNA into paddy rice; S3, screening the plants with varied characters; S4, carrying out molecular verification on the screened variant plants. The invention provides a practicable and feasible way for creating novel paddy rice species. The method introduces a wild rice DNA into japonica-type rice so as to obtain an offspring material having wild rice characters of the japonica-type rice, and the introduction efficiency is as high as 6.8%. The method has the advantages of wide variation, wide selection population, shortened breeding period, suitability for breeding needs, and quick character stability, and the third generation of the introduced rice has stable varied characters. The created novel species can be used as a parent material for japonica rice breeding, or is subjected to a directed breeding to generate a novel species which can be applied to paddy rice production.

A first electrode is integral to a beam having two ends securedly affixed to a support fixed onto a substrate. Residual stresses cause buckling of the beam so that the arch of the beam is close to at least one second electrode. The support can be formed by a ring fixed to the substrate by means of two fixing bases arranged on each side of the ring on a fixing axis passing through the centre of the ring, the beam being arranged on a diameter of the ring perpendicular to the fixing axis. The ring comprises at least one layer tensile stressed along the fixing axis. The beam can comprise at least one layer stressed in compression along a longitudinal axis of the beam. The second electrode can be integral to an additional support, the beam being arranged between the substrate and the second electrode.

The output of a flow restricting ozone generator assembly is connected through a conveying chamber to a low pressure port of a venturi nozzle which is inserted into the water circulating plumbing of a pool or spa. The conveying chamber then stores the water vapors from the water flow through the nozzle which are communicated to the ozone generator to promote the reaction products hydroxyradical OH that is then drawn through the port to mix with the circulating water flow. A spring biased valve at the inlet to the ozone generator is urged to close upon the instance when the flow through the nozzle ceases, terminating the low pressure at its throat and thereby fully confusing the reaction products from inadvertent escape.

A variable-shape mirror is provided with: a support base; a mirror portion that is disposed to face the support base and that has, on a side thereof facing away from the support base, a mirror surface which is irradiated with a light beam; fixed portions that fix the mirror portion to the support base; and piezoelectric elements that are sandwiched between the support base and the mirror portion and that vary a shape of the mirror surface. Here, the piezoelectric elements are arranged closer to a center of the mirror portion than the fixed portions are.