66results about How to "Stable output characteristics" patented technology

A coherent light source is provided with a light source unit for projecting a fundamental wave having a first wavelength, and a wavelength converting unit for projecting a second harmonic wave of the fundamental wave at a prescribed average power or more by receiving the fundamental wave. The coherent light source suppresses generation of sum frequency of the second harmonic wave and the fundamental wave, which causes unstable power. Therefore, a constitution is provided for keeping a walk-off angle of the fundamental wave and SFG light at 15 degrees or higher.

A temperature detector circuit using a MOS transistor capable of reducing manufacture variation of a mobility and realizing stable output characteristics which are not affected by temperature dependency may be offered. In one example, the temperature detector circuit includes a pair of depression type transistors to output a voltage which is proportional to temperature from a connecting point of a source of a first transistor and a drain of a second transistor. The transistors are the same conducted type of current and are formed in different channel size, which are connected between power supplies in series, and have a configuration in which first transistor's gate and source are connected each other and a first transistor's drain is connected with a second power supply and second transistor's gate and drain are connected each other and a second transistor's source is connected with a first power supply.

The invention discloses a positive sequence component-based three-phase inverter control method and a device, so as to improve the power supply quality of the inverter when unbalanced fault happens to the grid. The method of the invention comprises steps: a three-phase voltage positive sequence component is extracted and converted into a per unit value, computation is carried out between the per unit value and a power reference value, a d-axis current reference value and a q-axis current reference value are obtained, output current of the inverter undergoes Park transformation and then is compared with the current reference value to obtain a difference value, and after proportion integral control and Park inverse transformation, a three-phase modulation wave waveform is formed. The device of the invention is provided with a Park transformation and Park inverse transformation unit, a sinusoidal pulse width modulation unit, a positive sequence component extracting unit, a per unit value unit and a constant power control unit. Compared with the prior art, bad influences of negative sequence voltage on output features of the inverter in the case of unbalanced fault are eliminated, the control method is simplified, the response speed is improved, and the power supply quality of the inverter in the case of unbalanced fault is improved.

A temperature detector circuit using a MOS transistor capable of reducing manufacture variation of a mobility and realizing stable output characteristics which are not affected by temperature dependency may be offered. In one example, the temperature detector circuit includes a pair of depression type transistors to output a voltage which is proportional to temperature from a connecting point of a sauce of a first transistor and a drain of a second transistor. The transistors are the same conducted type of current and are formed in different channel size, which are connected between power supplies in series, and have a configuration in which first transistor's gate and sauce are connected each other and a first transistor's drain is connected with a second power supply and second transistor's gate and drain are connected each other and a second transistor's sauce is connected with a first power supply.

Disclosed herein is a rotary type magnetic coupling device including first and second coils magnetically coupled to each other used for a rotator. Each of the first and second coils is a loop-shaped having an opening surrounding a rotary axis of the rotator. Each of the first and second coils includes first and second wiring parts extending in a peripheral direction of the rotator, a third wiring part bent in the rotary axis direction from one end of the first and second wiring parts, and a fourth wiring part bent in the rotary axis direction from other end of the first and second wiring parts. At least one of the first and second coils is configured such that the third and fourth wiring parts match or overlap each other when viewed in a radial direction substantially orthogonal to the rotary axis.

A sealed rechargeable battery containing an electrode unit and a liquid electrolyte in a metallic case with a bottom that is sealed with a closure assembly. The electrode unit includes a positive electrode and a negative electrode, each made up of a collector and electrode material paste coated thereon, wound around with a separator interposed therebetween. The closure assembly includes a metallic filter that forms an internal terminal and accommodates a safety mechanism provided in case of abnormal pressure rise caused by overcharging etc, a resin inner gasket, and a metallic cap that forms an external terminal superposed upon one another. A resin inner gasket is attached to the metallic filter and the end edge of the metallic filter is crimped to provide a seal. The metallic filter and all the metallic parts encased in the metallic filter are joined together by welding. This closure assembly design enables high power output and high-current discharge of the battery with low resistance.

Disclosed herein is a rotary type magnetic coupling device used for a rotator. The rotary type magnetic coupling device includes first and second coils magnetically coupled to each other, and third and fourth coils magnetically coupled to each other. The coil axes of the first and second coils extend in a rotary axis direction of the rotator, and the coil axes of the third and fourth coils radially extend in a radial direction substantially orthogonal to the rotary axis of the rotator.

The invention discloses a constant current-constant voltage secondary automatic switching circuit and a resonant wireless electric energy transmission system. The system can switch different chargingmodes according to the charging state of a battery so as to achieve constant current or constant voltage output of the system. Usually, in the initial stage of battery charging, the system carries outcharging through a constant current mode to achieve fast charging, and in the end of charging, in order to protect a circuit, charging is performed in a constant voltage mode. Compared with existingwireless electric energy transmission constant voltage or constant current output, by using a compensation topology structure of the invention, communication between a primary side and a secondary side is avoided and a control aspect is simplified, and the stability and the safety of the wireless electric energy transmission system are improved. On a structure aspect, compared with an existing compensation topology, the compensation topology of the invention can be used to reduce reactive power and transmission efficiency is greatly increased. Through the switching of the two compensation topologies, the limitation of single compensation topology output is overcome and the suitable range of wireless electric energy transmission is extended.

Provided is a switching power supply unit which uses a multilayer board or a stack of planar conductors as the windings of transformers so as to reduce the volume of the transformers and to have high efficiency, small size and small noise. The switching power supply unit is formed by connecting a plurality of capacitors (23), (24), (25) and (26) connected in series with each other to input terminals (22a) and (22b) of a plurality of switching power supplies having switching elements (27), (28), (29) and (30), transformers (31) and (32), and rectifiers (33), (34), (37) and (38). The switching power supply unit inputs the voltages of capacitors (23)-(26), and outputs the respective voltages developed by the plurality of switching power supplies together to common output terminals (40a) and (40b). The transformers (31) and (32) are each composed of windings made up of a stack of planar conductor coils. This structure can reduce noise transmission through the windings, thereby providing stable output characteristics.

The present invention provides a magnetic sensor suitable for high resolution and having high reliability by achieving stable output even at the occurrence of variations in a gap between a magnetic medium and the magnetic sensor, and a magnetic encoder using the magnetic sensor. The present invention uses a magnetoresistive element having magnetoresistive properties that satisfy the inequation, H10−50<H50−90, where H10−50 represents a magnetic field required for a resistance change from ΔR×10% to ΔR×50% with respect to a maximum amount of resistance change ΔR on a magnetoresitance effect curve, and H50−90 represents a magnetic field required for a resistance change from ΔR×50% to ΔR×90%.

The wavelength conversion element includes a substrate having a nonlinear optical single crystal that periodically inverts the polarization structure. When ultraviolet light is irradiated on the substrate, the visible light transmittance of the substrate is 85% or more. The laser beam with a wavelength of 640nm to 2000nm is shortened to output a laser beam with an average output of 1W or more. In this way, by improving the visible light transmission characteristics when irradiated with ultraviolet light, it is possible to prevent damage to the crystal and achieve high output stability of output characteristics. As a result, the absorption of green light by ultraviolet light can be suppressed, making it possible to avoid saturation of the output and damage to the crystal.

A NMOS tube drive control circuit, a chip, a device and a drive method are provided for driven loads and external power common ground application scenarios. A source of the NMOS tube is grounded through a driven load; a drain electrode of the NMOS tube is electrically connected with a positive electrode of an external power supply; a drive control module receives external drive control signals; the drive control module controls the gate potential of the NMOS tube to be converted to a potential higher than the gate drive potential threshold based on the external drive control signal; the gate drive potential threshold is the sum of the external supply voltage and the gate source open voltage of the external NMOS tube to guarantee the continuous drive capability of the NMOS tube. The invention is especially suitable for the application scenes where the electric heating wire of the electronic cigarette needs common ground with the battery. Compared with the PMOS drive, the cost and consumption are reduced and the method is economic and environmentally friendly.

The invention discloses an electronic skin for touch detection. The electronic skin comprises a flexible substrate, at least two conductive layers, and a plurality of electrodes. The conductive layers cover the two surfaces of the flexible substrate respectively; and the electrodes are arranged at the two ends of the conductive layers. The conductive layers include matrixes and first conducting particles dispersed in the matrixes. The electronic skin has characteristics of having stable output characteristic, having good consistency between individuals, being convenient to install, and enabling costs to be lowered.

The invention aims to provide an optical waveguide element which minimizes the excitation of an unnecessary higher mode in a multiplexing section of a MZ waveguide to increase the stabilization of output light, and is capable of efficiently deriving radiation mode light. Specifically disclosed is an optical waveguide element in which a Mach-Zehnder waveguide is formed on a substrate, wherein the inclination of two waveguides (11, 12) that are input to a multiplexing section (13) on the emission side of the Mach-Zehnder waveguide is a 0 degree; wherein the multiplexed waveguide of the multiplexing section is a multi-mode waveguide; and wherein a waveguide that is output from the multiplexing section is further configured from a three-branch waveguide consisting of an output main waveguide (14), and two output sub-waveguides (15, 16) that sandwich the output main waveguide (14) therebetween.

This inertia sensor is provided with: a first and a second detection unit for respectively outputting a first and a second detection signal; an amplifier having input terminals for selectively inputting the first and second detection signals; a feedback circuit unit configured to be connected in parallel to the amplifier input terminals and output terminal; a first switch element situated between the first detection unit and an input terminal of the amplifier; a second switch element situated between the first detection unit and the feedback circuit unit; a third switch element situated between the first detection unit and an input terminal of the amplifier; and a fourth switch element situated between the second detection unit and the feedback circuit unit. According to this inertia sensor, the output characteristics of the feedback circuit unit are stabilized, and the occurrence of unwanted signals is minimized.

Provided are a solar cell module which has a standard configuration, can exhibit stable output characteristics, and has a size which facilitates handling during assembly, and a solar cell array which can exhibit stable output characteristics by employing the above solar cell module. The solar cell module (10) is provided with a battery panel (12) and has a length of 900 - 1100 mm in the lengthwise direction. The battery panel (12) is constructed by connecting a plurality of battery cells (100) in series. The open-circuit voltage is 100 - 180 V. The battery cells (100) have a belt shape with a short-side length of 7 - 12 mm, and are arranged in a line in the lengthwise direction of the battery panel with the long sides oriented in the short direction of the battery panel (12) and the short sides oriented in the long direction of the battery panel (12).

A polymer electrolyte fuel cell comprises an electrolyte membrane-electrode assembly, a pair of conductive separator plates sandwiching the electrolyte membrane of the electrolyte membrane-electrode assembly, and a pair of sealing means sealing between the electrodes of the electrolyte membrane-electrode assembly and the separator plates. The pair of sealing means is constituted by combination of a flat sealing member having a flat portion in flat contact with the electrolyte membrane and of a linear sealing member having a rib in linear contact with the electrolyte membrane, and at least part of the rib is in the form of falling in the direction to the electrode when the electrolyte membrane, the pair of electrodes and the pair of separator plates are stacked to be cramped. This makes it possible for the fuel cell to have an excellent sealing property and a stable output characteristic.

A vibration sensor for a musical instrument includes a substrate, a first electrode film that is formed on the substrate, a piezoelectric film that is formed on the first electrode film, a second electrode film that is formed on the piezoelectric film, an insulating film that is formed on the second electrode film, and a shield film that is formed on the insulating film, the shield film being made of a conductive material, electrically connected to the first electrode film and insulated from the second electrode film by the insulating film.

A configuration of acousto-optical tunable filters (AOTF) having stable output characteristics so that the output does not significantly vary with time. The configuration includes a plurality of AOTFs cascaded together. Each AOTF generates a surface acoustic wave in an optical waveguide in accordance with RF signals applied to the AOTF. A phase of a beat generated by the RF signals applied to one of the plurality of AOTFs is different from a phase of a beat generated by the RF signals applied to a different AOTF of the plurality of AOTFs.