42 results about "Internal inductance" patented technology

The invention provides a folded thin film capacitor and a fabrication method thereof. The folded thin film capacitor comprises a metal thin, two metal spraying layers (4a and 4b), two electrode terminals and a shell, wherein the two electrode terminals are respectively connected with the two metal spraying layers (4a and 4b), the folded thin film capacitor is characterized in that the metal film comprises a first metal evaporation film (2a), a second metal evaporation film (2b) and an electrical insulation polymer basic layer (1), the electrical insulation polymer basic layer (1) is sandwiched between the two metal evaporation films (2a and 2b), the metal film is repeatedly folded to form a cuboid block in a longitudinal direction, folded angles of the first metal evaporation film (2a) and the second metal evaporation film (2b) are superposed to respectively form a first side surface and a second side surface of the block, and the two metal spraying layers (4a and 4b) are respectively arranged on the first side surface and the second side surface. By the folded thin film capacitor and the fabrication method thereof, the problem that a metal spraying electrode at an end part of the thin film capacitor is seldom in contact with a metal film contact point is solved, heat generation of the end part of the capacitor is reduced, the internal inductance and the internal resistance of the capacitor are reduced, the lifetime of the capacitor is prolonged, and the folded thin film capacitor is particularly suitable for the field of large-current application.

In an inspection jig (1) for electrical inspection of printed circuit boards, an electrode section (40) has an electrode (41) disposed on a surface of an electrode plate (42), and a contact (10) includes a conductive contact needle (11), a compression coil spring (12), and an intermediate member (13) that are arranged coaxially for use. The contact needle (11) has a distal end (111), a projection (112), a larger diameter portion (113), and an intermediate portion (114), and the intermediate member (13) has a cylindrical intermediate end (131), a guide portion (132), and an electrode end (133). The electrode end (133) has a cut section at an oblique angle, is bent to have a proximal end (133a) in the vicinity of a central portion, and is held by a contact holder (30) to have an initial load. The electrode (41) is smaller in diameter than the contact (10). Thus obtained are an inspection jig and a contact allowing for facilitated fabrication and maintenance, with internal inductance improved and reliable conductive contact achieved by use of simple components.

An impulse capacitor belongs to the capacitor. A problem of high equivalent series inductance of metallized-film pulse capacitor can be solved. The impulse capacitor is suitable for a pulse power system in which the internal inductance of the capacitor is a nanohenry grade. In the invention, a first group of capacitance film, a first polyester insulation film, a second group of capacitance film, a second polyester insulation film, a third group of capacitance film and a third polyester insulation film are successively wound from inside to outside on a mandrel. A shell is installed out of the third polyester insulation film. Upper end surfaces of the first and second groups of the capacitance films are connected and lower end surfaces are insulated. The lower end surfaces of the second andthe third groups of the capacitance films are connected and the upper end surfaces are insulated. The third group of capacitance film is insulated with the shell. The lower end surface of the first group of capacitance film is taken as a low voltage extraction electrode and is connected with the impulse capacitor shell. The upper end surface of the third group of the capacitance film is taken as high voltage extraction electrode and is connected with a high voltage output terminal of the impulse capacitor. The impulse capacitor can bear the higher application voltage so that the equivalent series inductance of a whole capacitor can be reduced and the nanohenry grade can be reached.

A matrix converter system having a current control mode operation is provided. The system includes a matrix converter having a switching matrix. The matrix converter is coupled at its low-voltage side to a generator and at its output load side to a load. A controller having a pulse width modulation (PWM) control circuit is configured to control the matrix converter via its switching matrix to increase energy within the internal inductances of the generator when the switching matrix causes a short circuit. A feed forward calculator is configured to calculate a feed forward output phase angle. The feed forward output phase angle is an estimation of an angle between an output current vector and an output voltage vector that represent feedback signals of current and voltage output by the matrix converter. The angular position of the voltage output vector is adjusted as a function of the feed forward output phase angle to align angular position or phase angle of the voltage output vector that represents the voltage output with a selected angular position or phase angle.

The invention provides an integrated circuit. The integrated circuit comprises a packaging substrate; an interposer packaged on the packaging substrate, wherein a metal interconnection line and an inductance coil are formed in the interposer; and a chip packaged on the interposer. The metal interconnection line is arranged in at least one of the following modes: the metal interconnection line is electrically connected the chip and the packaging substrate; and the metal interconnection line is electrically connecting the chips with one another. The inductance coil does not change the electric connection between the chip and the packaging substrate below, and the inductance coil is arranged in the interposer, so that a middle-level internal inductor which is controllable in inductance value L and quality factor Q and meets the requirement can be realized, the bandwidth loss caused by the link and the solder balls on the whole signal link can be eliminated, and the bandwidth optimization is realized, so that the performance of the whole communication link can be improved.

The invention relates to a fabric sensor design method and a fabric respiration measuring device. The fabric sensor design method includes the following steps that (1) self-inductance of silver-plated conductive yarns is composed of internal inductance and external inductance; (2) the magnetic field intensity and the magnetic induction intensity of the position which is x away from the axis of the silver-plated conductive yarns are obtained; (3) an area with the width being dx and the length being 1 is obtained in the position which is x away from the axis of the silver-plated conductive yarns, and the magnetic flux and the magnetic flux linkage are obtained; (4) the total magnetic flux linkage of the interior of the silver-plated conductive yarns is obtained; (5) the internal inductance per unit length of the silver-plated conductive yarns is obtained; (6) a point P (x, y) is selected randomly outside the silver-plated conductive yarns, and the magnetic induction intensity of the silver-plated conductive yarns at the point P (x, y); (7) the total magnetic flux linkage of the exterior of the silver-plated conductive yarns is obtained; (8) the external inductance per unit length of the silver-plated conductive yarns is obtained; (9) the inductance per unit length of the silver-plated conductive yarns is obtained; and (10) the fact that the inductance of the silver-plated conductive yarns is related to the position of the silver-plated conductive yarns is known, and then respiration signals and the respiration rate are obtained indirectly. The fabric sensor design method and the fabric respiration measuring device are suitable for monitoring of the respiration signals and the respiration rate in daily life and exercise state.

The invention discloses a new energy-saving distribution box, which comprises a cabinet body, a lock, a lock body, an alarm, an inductance, a capacitor, a display screen, an inductance coil and a foot pad. The cabinet body is provided with a card slot, and the cabinet body There is a loose leaf on the left side of the body, the door body is connected to the loose leaf, and the door body is provided with a gasket, the lock is fixed on the left side of the door body, and the remote control device is provided with a controller on the right side. The inductor is fixed under the cabinet, and a sealing device is arranged outside the inductor, the capacitor is set on the right side of the inductor, the display screen is embedded inside the door, the inductor coil is set inside the inductor, and the inductor coil is provided with an inductor line, and the foot pad is arranged at the lower part of the cabinet. The new energy-saving power distribution box is mainly designed for power distribution. A display screen is set on the front of the device, which can better display the power consumption of the mains power and power-saving mode, and can better let people Know the status of electricity usage.

A driver circuit is described for an ion measuring device associated with a cylinder of a diesel engine for the measurement of the conductivity of the combustion gas present in the cylinder, wherein a negative voltage can be applied by the driver circuit to a glow plug serving as a sensor and associated with the cylinder for a respective ion measurement. The negative voltage is generated by a capacitor which is correspondingly charged each time the glow plug is switched off via the magnetic energy stored in the internal inductance of the glow plug.

A notched SAW image frequency rejection filter system includes a SAW filter having an input, an output and a ground output and an impedance matching network including a first matching inductance connected to the SAW filter output and a second matching inductance connected to the ground output of the SAW filter; the SAW filter having an inherent internal capacitance that produces a predetermined capacitive leakage current at the image frequency; an inherent internal inductance that produces an inductance leakage current at the image frequency; and a boosted inherent parasitic ground inductance at the ground output of the SAW filter for generating a voltage across the second matching inductance to produce a compensation current which is substantially opposite in phase and substantially matched in magnitude with the capacitive leakage current for reducing the capacitive leakage current and increasing the image frequency rejection.

The invention discloses a large-current combined high-temperature inductor and a processing method thereof. The whole inductor is formed by bonding and combining an inductance magnet and an inductanceconductor. The inductance magnet comprises an external inductance magnet and at least one internal inductance magnet; the external inductance magnet is integrally formed, at least one conductor containing groove used for containing the inductance conductors is formed in the external inductance magnet in a penetrating mode, one inductance conductor is arranged in each conductor containing groove,and the remaining space in each inductance conductor and the remaining space in the corresponding conductor containing groove are filled with one internal inductance magnet. Effective integration of the inductor is achieved, the overall shape of the inductor is regular, pins on the inductor are all arranged on the outer surface of the same side of an inductor finished product, the shielding performance of the inductor is guaranteed, the overall size and occupied space of the inductor are reduced, and convenience is provided for subsequent installation and use of the inductor.

The invention discloses an office chair device, which comprises a bottom side plate and a top side plate. The upper surface of the bottom side plate is provided with a casing fixedly installed on both sides corresponding to it, and an iron Rod, the side of the iron rod is fixed inside the inductor, the casing is provided with a main body hollow groove directly above the iron rod, a magnetic body is placed inside the main body hollow groove, and the magnetic shape A sliding plate is placed on the upper surface of the body, and a first push rod is fixed on the top of the upper surface of the sliding plate.

A compensating inductor energy storage generator comprises a motor unit and a rectifying circuit. The motor unit comprises an armature winding, an exciting winding and a compensating winding. The rectifying circuit comprises a plurality of diodes. The armature winding is electrically connected with the compensating winding and a load through the diodes, and the exciting winding is connected to the two ends of the compensating winding in parallel. When the motor unit carries out instantaneous discharge on the load, the compensating winding provides compensating currents, so that a varying magnetic field is generated and interacts with a reaction magnetic field of the armature winding, equivalent instantaneous internal inductance of the motor unit is reduced, and the capacity of the motor unit for outputting power instantaneously is improved.

The invention relates to an ultra-high-speed integrated motor with internal inductance capable of being steplessly adjusted, and belongs to the technical field of motors. According to the invention, astator and a rotor of a set of electric reactor are additionally arranged outside normal stator teeth, coils are wound on the stator teeth of the electric reactors and fixed on the motor stator, andthe rotor is fixed on a shell and can slide back and forth through a push button outside the shell, so that the coupling area between the stator teeth and the rotor teeth of the electric reactor is adjusted so as to further change the magnetic conductivity of a magnetic circuit, and stepless adjustment of the internal inductance is realized so as to adapt different working conditions by adjustingthe inductance value, simplify the working system of the motor and improve the working efficiency of the motor; compared with the traditional mode of limiting the motor stator winding current by an external series reactor, the series inductor provided by the invention has the advantages that the inductance value can be randomly adjusted, and the adjustment range is wide enough; and on the basis ofensuring the working safety of the motor, the ultra-high-speed integrated motor has the advantages of being more flexible and more suitable for complex and changeable working conditions of the motor.