30results about How to "Increase the current level" patented technology

In a semiconductor device, and a method of fabricating the same, the semiconductor device includes a semiconductor substrate having a cell region and a peripheral circuit region, a portion of the semiconductor substrate in the cell region and in the peripheral circuit region including an isolation region defining an active region, a portion of the active region protruding above an upper surface of the isolation region to define at least two active channels, a gate dielectric layer formed over the active region of the semiconductor substrate including the at least two protruding active channels, a gate electrode formed over the gate dielectric layer and the isolation region of the semiconductor substrate, and a source / drain region formed in the active region of the semiconductor substrate on either side of the gate electrode.

The invention relates to a shunt which comprises a shunt body and sampling columns. The shunt body comprises a manganese-copper plate in the center position and a first red copper plate and a second red copper plate which are symmetrically arranged at the two sides of the manganese-copper plate. The first red copper plate is provided with the first sampling column and at least one current input hole. The second red copper plate is provided with the second sampling column and at least one current output hole. The first red copper plate, the second red copper plate and the manganese-copper plate are identical in thickness and length, wherein the thickness is 2mm-12mm. Width of the manganese-copper plate is 5mm-15mm. Width of the first red copper plate and width of the second red copper plate are 40mm-60mm. The sum of the height of the sampling columns and thickness of the shunt body is not greater than H. The beneficial effects of the shunt are that the shunt formed by the red copper plates and the manganese-copper plate via welding has relatively-low sampling voltage, so that power consumption is greatly reduced; and meanwhile, sampling detection precision is enhanced through the sampling columns, and thus the domestic blank is filled.

The invention discloses a packaging structure of a power semiconductor module, which is characterized in that it comprises a substrate; a casing, the bottom of the casing is fastened to the top of the substrate; a power semiconductor module subunit is arranged on the casing In the accommodation space formed by the body and the substrate, it is used to form a topology control circuit structure. The power semiconductor module subunit includes a plurality of backing boards arranged at intervals on the base board, and between two of the backing boards arranged oppositely The power terminal set is connected with the module-level bonding wire, and the top of the power terminal set extends out of the top of the casing. The invention can double the current density, has high yield and good reliability.

The invention relates to a method for actuating a valve with a solenoid valve drive through which an electric current (1) is conducted to open, close and hold the valve in an open position or in a closed position, The method has at least the following steps: a) receiving an opening signal, b) in response to the received opening signal, varying the current (1) conducted by the valve driver in the pattern of a first current signal (2) to open The valve, c) receives a closing signal, and d) in response to the received closing signal, alters the current (1) directed by the valve driver in the pattern of a second current signal (3) to close the valve , wherein the second current signal (3) has at least two changes of the current (1) separated in time from each other.

The invention discloses a high-current DC contactor comprising two sets of DC contact bodies and a set of electromagnetic driving mechanism. A DC contact mechanism includes an arc extinguishing chamber (1), a magnetic blowing system (2), a spring system (3), a magnetic conducting plate (6), a static contact (7), a moving contact (8), a conductive copper row (9), a support base (10), a micro switchassembly (11), and a contactor shell (12). The electromagnetic drive mechanism includes a guide driving block (4), an electromagnet (5) and a base (18). A form of a snap-type electromagnet which is often used in existing products on the market is changed, a suction-type electromagnet is used as a power element, with a redesigned driving system, the space is saved as much as possible in the same breaking capacity, the requirements of a railway locomotive for dimensions are satisfied, the effective insulation distance of a contactor is ensured, and the current level of the contact is improved.

The invention relates to a multichannel carbon nanotube sensor, which belongs to the technical field of micro-electronics, and a preparation method thereof. The multichannel carbon nanotube sensor comprises a substrate, a lower metal electrode, carbon nanotubes and an upper metal electrode, wherein the substrate is arranged on the bottommost end of the integral structure, the lower metal electrode is arranged on the substrate, a plurality of carbon nanotubes are vertically distributed to form an array, and the two ends of each carbon nanotube are respectively connected with the lower metal electrode and the upper metal electrode to form carbon nanotube conducting channels. The lower metal electrode, the carbon nanotube conducting channels and the upper metal electrode form a plurality of series unit structures. The sensor prepared in the invention can realize up-and-down integration, is compatible with the IC integrated circuit, can be used to manufacture array sensors and realize diversified and integrated manufacture of the devices.

The invention discloses an ultra-fast piezoelectric driving mechanical switch used in a medium-voltage direct-current system and a working method. The mechanical switch comprises an insulating shell,a transmission mechanism, a frame connecting rod, a contact connecting rod, a stroke amplifying frame, an element fixing block, a piezoelectric driving stack, a signal lead terminal, a contact fixingplate, a spherical contact, an outer conductor, a wiring terminal and a shell spherical contact. The mechanical switch adopts a piezoelectric driver as a driving source, and is suitable for a medium-voltage direct-current power supply system. When a short-circuit fault occurs in the system, a circuit breaker signal is transmitted to a circuit breaker signal wiring terminal, the piezoelectric driver receives a voltage signal and deforms, the transmission mechanism is driven by a pull rod to separate the contacts so as to achieve a breaking effect, and the transmission mechanism plays a role intransmission and displacement amplification at the same time. Compared with a common circuit breaker, the whole breaking process is high in response speed, and the volume is compact and small.

The invention discloses a rapid interface device for conveying super-heavy current, comprising a seat body whose sidewall is provided with a horizontal plug. The bottom part and the top part of the horizontal plug are respectively provided with a first electrode block and a third electrode block. The bottom part of the third electrode block is provided with a first arc guiding groove. The top partof the first electrode block is provided with a second arc guiding groove. The bottom part of the seat body is provided with a longitudinal cavity communicated with the horizontal plug, and the longitudinal cavity is provided with a movable clamping block and a spring seat. The bottom part of the movable clamping block is provided with an inserting rod. The top part of the spring seat is providedwith an inserting hole matching with the inserting rod. The inserting rod is sleeved by a belleville spring. The top part of the movable clamping block is connected to the first electrode block. Twosides of the spring seat are respectively provided with a connecting shaft extending outside of first waist-type holes at two sides of the seat body. Two sides of the seat body are respectively provided with a hoisting structure connected to the connecting shaft. The invention is advantageous in that plugging is rapid and convenient, connecting is stable; the device can be suitable for hostile working environment in the field; safety and practicality of the device can be improved; the device can be widely applied in the field of electrical connection.

The invention relates to an inductance energy storage type pulse power supply used for electromagnetic emission, which belongs to the technical field of electromagnetic emission and comprises a primary power supply, a first feedback energy thyristor, a second feedback energy thyristor, a plurality of power supply side thyristors, a plurality of inductance energy storage pulse units and a load thyristor. The pulse power supply has extremely strong current amplification capability and is capable of expanding a system by improving current level of the primary power supply and increasing the grade of the inductance energy storage pulse units. The power supply adopts the thyristors and low coupling inductors, utilizes an auxiliary circuit for current exchange, and is capable of greatly reducing equipment cost. The adopted low coupling inductors can lowers requirements for the inductor manufacture process. An energy feedback mechanism is introduced, and system energy utilization ratio can reach high as 70%. The power supply can achieve any wanted current waveform, thereby being suitable for electromagnetic emission.