62results 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 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.

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%.

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.

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.

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 display substrate at least comprises a substrate body, a first thin film transistor, a storage capacitor, a second thin film transistor and a light-emitting unit; the first thin film transistor is athin film transistor without a shading layer; the second thin film transistor is a thin film transistor with a top shading layer; the second thin film transistor further comprises a buffer layer, a second active layer, a second gate insulating layer, a second gate electrode, a second interlayer insulating layer, a second drain electrode, a second source electrode, a shading layer and a passivation layer; the second drain electrode, the second source electrode and the shading layer are all formed by patterning a first metal thin film; the shading layer completely covers the area where the second grid electrode is located; and the first end of the shading layer extends to the area where the second drain electrode is located.

A thin-film transistor and a display panel are provided in which current characteristics of the thin-film transistor are improved by a dual gate electrode structure, and the output characteristics of the thin-film transistor are improved by dividing the top gate electrode (or bottom gate electrode) of the dual gate electrode into two electrodes and applying a back bias voltage to the top gate electrode adjacent to a source region. A high-resolution display panel or a transparent display panel is realized by increasing the aperture ratio (or transmittance) of the display panel using the highly integrated high-current device.