56results about How to "Lower self-esteem" patented technology

A transformer unit and a power converting device, which lessen the influence of noise caused by an external magnetic flux, while reducing the temperature dependency of a coupling coefficient, and which transfer signals while insulating a low-voltage and a high-voltage side electrically. Air-core type insulated transformers have a first and second winding of a primary winding as a sending side and a first and second winding of a secondary winding as a receiving side. The windings of the primary winding are connected in parallel and are wound so that the directions of magnetic fields generated by an exciting current oppose each other. The windings of the secondary winding are wound so that electromotive forces to be generated by an external magnetic flux cancel each other, and are connected in series so as to raise the electromotive forces by a signal magnetic flux generated by the primary winding.

A socket connector for connecting a bulbous terminal or ball wherein the female element grips the terminal with resilient prongs with end tips at low insertion force but positive contact is maintained and wherein attempted withdrawal is normally inhibited by increasing force applied to the post by the female element in response to the withdrawal force. The female element comprises a tube of resilient conductive material that has been sliced or helically partitioned into opposing prongs of a width that decreases with axial distance from the end of the connector so as to allow the prongs of the connector to grip around the ball-like bulbous terminal and mechanically retain the terminal within the connector. The tubular element of the connector may be made by forming prongs in one or both ends of a tube by cuts of a width that increases with distance from the end of the tube.

A semiconductor module includes an insulating substrate (200) that is made of AlN and that has a first plane (201) and a second plane (202) both of which face mutually opposite directions, a first conductor layer (210) formed on the first plane (201), a second conductor layer (220) formed on the second plane (202), a semiconductor device (300) bonded to the first conductor layer (210) with a first solder layer (510) interposed therebetween, and a heat dissipation plate (400) that is formed in a rectangular shape when viewed planarly and that is bonded to the second conductor layer (220) with a second solder layer (520) interposed therebetween, and, in this semiconductor module, the heat dissipation plate (400) is deformed so as to become convex in a direction in which the second plane (202) is pointed when viewed from a width direction thereof.

This capacitor has: a single capacitor block provided with a plurality of capacitor elements electrically connected in parallel, each of said capacitor elements having a terminal part on each end; a first electrode plate that electrically connects the first terminal parts of the capacitor elements; a second electrode plate that electrically connects the second terminal parts of the capacitor elements and continues on to the side where the first terminal parts are; and at least one bypass electrode plate that electrically bypasses the second electrode plate.

The invention relates to a total-stroke and total-space transient electromagnetic device and measuring method. The device comprises a transmitting unit and a multi-channel receiving unit, wherein the transmitting unit and the multi-channel receiving unit are respectively connected with a signal processing unit, the signal processing unit is connected with a main engine through a communication unit, relevant parameters are set through operation software of the main engine, the receiving unit and the transmitting unit jointly achieve field source excitation and complete collection, recording and the like of an induction signal and an excitation source signal, the induction signal and the excitation source signal are transmitted to the main engine through an RS485, and the display, storage, management and the like of the data are achieved. According to the total-stroke and total-space transient electromagnetic device and measuring method, the self-induction and mutual induction influences can be effectively reduced, the signal to noise ratio and the sensitivity are improved, receiving coils can be combined into different types according to the detection requirement, the different detection effects can be obtained, and the judgment on the direction of an abnormal body can be achieved under the total-space situation. The number of detection blind zones can be reduced, the superficial zone detection effect can be improved, an ARM quad-core processer hardware platform is adopted, a special embedded type operation system is configured, and real-time imaging, comparison, judgment and subsequent analysis can be conveniently carried out on the measured data.

The invention discloses a method for preparing a compound bus, which comprises the following steps: 1) A soft gluing insulation film is clipped according to the shape of a finished conductor plate, insulation sealing sides are reserved on the a middle opening of the insulation film and the conductor plate and positions which correspond to side edges. 2) The insulation film of step 1 is correspondingly superimposed on the upper surface and the lower surface of the conductor plate according to shape of the conductor plate. 3) The conductor plate of the step 2 is placed in a die to be thermally pressed, which leads the insulation film and the conductor plate to form an integrated body, simultaneously, the insulation sealing sides which are reserved on the middle opening on the conductor plate and the positions of the side edges are pressed into an integrated body, thereby making to the compound bus. 4) Cooling and mould unloading. The compound bus which is made by the method has the advantages of low product cost, simple process, high production efficiency and excellent insulating property and the like.

An electrical machine or generator comprising a rotor (79) without windings, a stator (78) having several armature windings and several field windings and an electrical circuit arrangement, the armature winding comprising at least two active parts located in the stator The coils (A1, A2) in the armature winding slots (81) in the magnet, the active part of the field winding (F) are located in the field winding slots (80) in the stator magnet. The circuit device is used to control the current in the coils (A1, A2) synchronous with the rotation of the rotor, so that the period in which the current produces a magnetomotive force in one direction in one coil and the period in which the current produces a magnetomotive force in the opposite direction in the other coil alternate with each other. Armature winding slots and field winding slots are equal in number and alternate within the stator magnets. In addition, considering that the width of each slot (80, 81) is the maximum value in the direction of rotor rotation, the depth of each slot is the maximum value of the radial slot of the rotor, and the thickness of the back iron behind the slot is the maximum value of the slot along the same radial direction. The distance between the value and the maximum value of the armature magnet, the width of each armature winding slot (81) is greater than the width of each field winding slot (80), the thickness of the back iron behind each armature winding slot (81) Greater than the thickness of the back iron of each field winding slot (80). Such an arrangement optimizes power efficiency while making the best use of the magnetic material.

The invention discloses a superconductor critical current and shunt temperature test device comprising a back field magnet, a temperature-variable sample dewar, a superconducting transformer, a cryogenic system, and a quenching detection and quenching protection system. The cryogenic system comprises a cryogenic refrigerator, a liquid helium storage tank, a superconducting transformer dewar, a back field magnet dewar, and a cryogenic transmission pipeline. The superconductor critical current and shunt temperature test device of the invention is applicable to superconductor critical current and shunt temperature test in a high back field. The maximum test back field is 10T, and the maximum test current is up to 50kA. The superconductor critical current and shunt temperature test device of the invention has the advantages of high test precision, low test cost, convenience of sample replacement, short test cycle, and the like.

The invention discloses an ultra wide band electric field probe using a U-shaped structure. The ultra wide band electric field probe includes arc edge reference planes, a U-shaped signal line, an intermediate signal line and a top layer signal line. The arc edge reference planes include a top layer reference plane and a bottom layer reference plane, and the top layer reference plane and the bottomlayer reference plane are correspondingly of symmetrical similar 'T' shape structures in the central line of the plane of the probe. The U-shaped signal line is located between the top layer reference plane and the bottom layer reference plane, and a narrow handle end located on the intermediate layer of the probe is a transmission line of a strip line structure. Two arms of the open end of the U-shaped signal line are distributed symmetrically in the center line of the plane of the probe. The arc end of the U-shaped signal line is connected with the intermediate layer signal line, and the intermediate layer signal line is connected to the top layer signal line through a connecting hole. The ultra wide band electric field probe has the characteristics of ultra wide band and high sensitivity, the defect that in a traditional test, signals of weak electric fields and ultra wide band testing are not measured are effectively improved, and veracity of testing results is ensured.

A power electronic capacitor with high space utilization rate, comprising a capacitor core assembly (2) located in the inner cavity of a housing (3) and a two-pole electrode assembly (1), the electrode assemblies (1) of each pole include capacitor cores The electrical connecting wires (5) connected to the gold-sprayed layer at one end and the electrode leads (6) connected to these electrical connecting wires, the capacitor core assembly (2) is composed of a plurality of capacitor cores, and between each capacitor core and The gap perfusion filling layer (4) between them and the inner wall of the shell (3) is characterized in that: the capacitor core includes a large capacitor core (7) and a small capacitor core (8), and the small capacitor core ( 8) The space between the major capacitor cores (7). The design reduces the volume and inductance of the capacitor, is beneficial to the heat dissipation of the capacitor, improves the reliability of the capacitor and reduces the cost.

The invention discloses a pulse high-intensity magnetic field generation device, which comprises a power source, a first control unit, an energy storage switch, an energy storage capacitor, a second control unit, an energy discharge switch, an energy transducer, a first sampling unit, a second sampling unit and a main control circuit. The power source, the first control unit, the energy storage switch, the energy storage capacitor, the second control unit, the energy discharge switch and the energy transducer are connected forwards sequentially, and the energy transducer is connected with thefirst control unit through the second sampling unit. The pulse high-intensity magnetic field generation device has the advantages that the device is capable of controlling generation of pulse magnetic fields accurately by means of essential control, the energy storage process and states of the capacitor are mastered properly by sampling voltage of the capacitor, the value required by the energy storage capacity of the capacitor is fed back and controlled by sampling voltage of pulse magnetic fields, different control processes share out the work while cooperating with each other, the device has universality in application, and a control circuit thereof is simple and low in cost.

The present invention is directed to a socket connector having a plurality of contacts for contacting with a plurality of solder balls arranged on one of the surface of a semiconductor package, and a socket body in which a plurality of mounting holes are provided for mounting respective contacts. The mounting hole is provided with a through-hole pierced in a height direction of the socket body and a contact support hole of the contact. Each contact is provided with an upright piece extending through the through-hole, and a support piece extending from the upright piece to be inserted into the support hole. A contact portion for contacting with the solder ball is formed at a tip end portion of the upright piece. The support piece extends from the proximal end portion of the upright piece.

A method of integrating a top surface optical device having electrical contacts on the top surface with an electronic chip (324) having electrical contacts on a connection surface comprising forming a trench (308) bounded by walls, the trench Extending from the top surface of the wafer containing the top optics into the wafer substrate (304), making a portion of the wall conductive by applying a conductive material to the portion; and thinning the substrate to expose the conductive material.

The invention discloses a magnetic field precision compensation and adjustment system and a construction method thereof. The magnetic field precision compensation and adjustment system comprises selecting three pairs of sheets to be served as magnetic field adjusting panels, wherein every pair of sheets comprise two thin panels; setting the length of every thin panel to be s and the width to be b, wherein the magnitude of s is from 10 to 1m and the magnitude of b is from 10 to 2m; sequentially arranging the two thin panels of every pair of sheets in a parallel mode to obtain cubic space which is formed by the three pairs of sheets to be served as magnetic field space, wherein the vertical distance between the two thin panels of any pair of sheets is h and the magnitude of h is from 10 to 2m. The magnetic field precision compensation and adjustment system has the advantages of not only reducing a self-inductance and mutual inductance effect caused by a coil but also being simple in operation structure and high in testing accuracy.