30results about How to "Low power loss" patented technology

The invention relates to a multiport-RAM memory device, comprising a RAM memory unit (1), a number of serial / parallel converters (5, 6, 7) and a parallel / serial converter (10), for converting serial signals into parallel signals. Said multiport-RAM memory device further comprises a control unit (11) and two timeslot allocation devices (8, 9), whereby an emulation of a number of connections by using the simple RAM memory unit (1) may be achieved. Furthermore, a power controller (12) can significantly reduce the power demand.

A DC to DC converter can include a reverse-blocking semiconductor switch that makes a synchronously rectifying MOSFET become parallel-connected with a capacitor that is connected to a power supply of a controller IC for a conventionally used synchronously rectifying circuit. The reverse-blocking semiconductor switch can be driven either by signals for adjusting a voltage of the capacitor within a permitted range of voltage of the power supply of the controller circuit, or by signals that are determined by a signal obtained from voltage across the MOSFET and the signals for adjusting a voltage of the capacitor within a permitted range of voltage of the power supply of the controller circuit.

A low-loss Mn—Zn ferrite comprising Fe, Mn and Zn as main components, Co, Ca and Si as first sub-components, and at least one Va-group metal as a second sub-component: Fe and Zn being 53-56% by mol (calculated as Fe2O3) and 1-9% by mol (calculated as ZnO), respectively, and Mn being the balance, based on the total amount (100% by mol) of the main components; Co and Ca being 500-5000 ppm (calculated as Co3O4) and 3000 ppm or less (calculated as CaCO3), respectively, by mass based on the total amount of the main components, a mass ratio of Ca (calculated as CaCO3) to Si (calculated as SiO2) being 2 or more; Ta being 250 ppm or more (calculated as Ta2O5) among the Va-group metals; the ferrite having an average crystal grain size of less than 3.2 μm and volume resistivity ρ of 1 Ω·m or more, and a power loss Pcv of 350 kW / m3 or less in a range of 0° C.-120° C. at a frequency of 2 MHz and a magnetic flux density of 25 mT.

Methods for generating weights for the antenna elements (110) in an AESA antenna (100). In one embodiment, transmitting weights are selected to have unit amplitude and quadratic phase, and receiving weights are selected to provide a two-way antenna pattern which is uniform over a useful portion (300) of the main lobe, and decreases rapidly outside of the uniform portion. In another embodiment the transmitting weights have unit amplitude over a central portion of the array and the receiving weights are selected to provide a two-way antenna pattern which is uniform over a useful portion (300) of the main lobe.

The invention relates to an overvoltage protection device and to a method for fabricating such a device. A substrate (1) is provided with a first electrode layer (2), above which extends a second electrode layer (3) which is separated from the first electrode layer (2) by a distance (d) determined by the thickness of a spacing layer (4). The spacing layer (4) has an opening (5) which forms a cavity (6) between the electrode layers (2, 3).

On a front surface of a region where a junction termination extension structure of a semiconductor device using silicon carbide is formed, a structure having an n-type semiconductor region with a concentration relatively higher than a concentration of an n−-type drift layer is formed. An edge of the junction termination extension structure located on a side away from an active region is surrounded from its bottom surface to its front surface by an n-type semiconductor region. By this means, it is possible to provide a device with a low resistance while ensuring a withstand voltage, or by decreasing the resistance of the device, it is possible to provide a device with low power loss.

A switchgear cell having a group of connection is disclosed, with the group of connection having a first and a second controllable bidirectional power semiconductor switch and a capacitor. In order to reduce the stored electrical energy and to save space, the group of connection can have a third, fourth, fifth and sixth controllable bidirectional power semiconductor switch and the first controllable bidirectional power semiconductor switch can be connected back-to-back in series with the second controllable bidirectional power semiconductor switch, the third controllable bidirectional power semiconductor switch can be connected back-to-back in series with the fourth controllable bidirectional power semiconductor switch, the capacitor can be connected to the connection point of the first controllable bidirectional power semiconductor switch to the second controllable bidirectional power semiconductor switchand to the connection point of the third controllable bidirectional power semiconductor switch) to the fourth controllable bidirectional power semiconductor switch, the fifth controllable bidirectional power semiconductor switch can be connected to the connection point of the first controllable bidirectional power semiconductor switch to the second controllable bidirectional power semiconductor switch, and to the fourth controllable bidirectional power semiconductor switch, and the sixth controllable bidirectional power semiconductor switch can be connected to the connection point of the third controllable bidirectional power semiconductor switch to the fourth controllable bidirectional power semiconductor switch and to the second controllable bidirectional power semiconductor switch.

The invention relates to a battery cell, in particular a lithium-ion battery cell, comprising a cell housing (10) with a base area (11) on which the battery cell is positioned and at least one side face and two terminals, wherein a first terminal (20) is electrically conductively connected to the cathode of the battery cell (1), and a second terminal (30) is electrically conductively connected to the anode of the battery cell (1), and wherein the terminals (20, 30) are arranged on at least one side face of the cell housing (10). Furthermore, the invention relates to a battery cell module, which comprises a plurality of battery cells (1) according to the invention, wherein a terminal (20) of a first battery cell makes contact with a terminal (30) of a second battery cell. In addition, the invention relates to a method for producing a battery cell module according to the invention, in which at least one first and one second battery cell according to the invention are provided, positioned next to one another, and at least one terminal (20) of the first battery cell is electrically conductively connected to a terminal (30) of the second battery cell. The invention also relates to a motor vehicle which comprises a battery cell module according to the invention.

The invention relates to a device for the control of fluorescent lamps in a lighting arrangement that comprises at least one such fluorescent lamp, wherein for each fluorescent lamp the device has the following characteristics: a capacitive voltage divider consisting of a first capacitor and a second capacitor that are connected in series to the fluorescent lamp, a switch that is connected in parallel to one of the capacitors, means of measuring the momentary lamp current that flows through the fluorescent lamp and a control circuit to generate an input signal for the semiconductor switch depending on the momentary lamp current.

The present invention relates to a non-contact potentiometer. The non-contact potentiometer comprises the following parts: a mechanical housing with through-holes; a rotating shaft comprising a top end and a magnet end on which a permanent magnet is fixed and external torque can be applied to the top end, thus driving the rotating shaft and the permanent magnet to rotate around a rotation axis and relative to the housing; a magnetoresistive sensor assembly fixed inside the housing, comprising one or more sensor chips, the sensitivity axis of the sensor chips lies in a sensing plane that is perpendicular to the axis of the rotating shaft, and separated from the permanent magnet by a predetermined distance in the direction parallel to the axis of the rotating shaft, said sensors are used for sensing the magnetic variation produced as the permanent magnet rotates with the rotating shaft thereby generating sensing signals; and three electrical connection terminals, namely a ground terminal, a power terminal, and a signal output terminal. This non-contact potentiometer has the advantages of high precision, low power consumption, and low cost. Additionally, it converts the complex analogue signal from the magnetic sensor into a standard digital format that is easy to use.

The invention provides a microwave high-isolation-degree multi-path cavity power divider; electromagnetic energy is fed into a power division cavity through a coaxial port, and impedance matching is realized through stepped cylinders of different heights in the cavity, and the energy is output through a power division output port after mode conversion. An imbalanced energy signal is introduced into an isolation circuit by a microstrip line nested on an inner conductor at the input port of the power division cavity, and the high isolation characteristic between all the input ports is achieved through isolation resistor absorption. The power divider has the advantages of compact structure, simplicity in machining and assembly, high power division / synthesis efficiency, high isolation degree,high power division / synthesis power and the like.

An input-voltage-off detection apparatus includes a voltage adjustment unit, a time delay unit, a voltage clamp unit, an auxiliary voltage discharge switch unit and an isolation notification unit. The voltage adjustment unit receives an input voltage. The time delay unit utilizes the input voltage to generate a direct current voltage. After the input voltage is cut off, the direct current voltage stored in the time delay unit discharges to the voltage adjustment unit. When the direct current voltage reduces to a predetermined voltage, the auxiliary voltage discharge switch unit is turned on, so that an auxiliary voltage winding sends a working voltage to the isolation notification unit. After the isolation notification unit receives the working voltage, the isolation notification unit notifies an electronic apparatus that the input voltage is cut off.

The invention relates to an exhaust gas aftertreatment device (1) of a motor vehicle, said device having a heater (2), which includes a plurality of heating elements (5, 6, 7), and a control unit (9) associated with the heater (2), wherein a common first switch (10) and in each case a second switch (32, 33, 34) are associated with the heating elements (5, 6, 7) and said heating elements (5, 6, 7) are jointly switchable by means of the first switch (10) and individually switchable by means of the second switches (32, 33, 34). The invention thereby provides that said first switch (10) is disposed separately from the control unit (9) and can be actuated by the same.

Provided is a power semiconductor device comprising a bonding joint that, even under a temperature environment of 150° C. or greater enabling operation of a wide bandgap semiconductor, reduces cracking-destruction occurring owing to thermal cycle while conductively connecting an electrode, connection terminal, and semiconductor device substrate.It is a power semiconductor device capable of operating under a temperature of 150° C. or greater having an electrode laminated on a wide bandgap semiconductor substrate and a connection terminal joined to the electrode for connection to external wiring, which power semiconductor device is characterized in that difference among the three coefficients of linear expansion of the electrode, a core of the connection terminal, and the semiconductor device substrate is 5.2×10−6 / K at maximum, and that it comprises a joint that directly joins the connection terminal and the electrode.

A wireless power feeding device includes first to Nth (N is an integer of 2 or more) switching elements connected in parallel to each other between a power line, which is connected to one end of a power transmission coil, and a ground line, each of the first to Nth switching elements supplying a current to the drive line in accordance with an oscillation signal; a first resistor connected in series with the first switching element between the power line and the ground line; and a current measurement circuit for generating a first measured current signal representing the amount of the drive current on the basis of the potential of one end of the first resistor.

The invention relates to the technical field of artificial intelligence, in particular to a method and device for determining the optimal cleaning time of a photovoltaic cell based on artificial intelligence. The method comprises the following steps: obtaining an initial water stain area and an inclination angle on a photovoltaic cell panel; according to the initial water stain area, obtaining theresidual water stain area in a preset time period, the illumination intensity of the photovoltaic cell panel, the surface temperature of the cell panel, the wind load and the environment temperature;constructing a water stain evaporation time model by taking the residual water stain area, the illumination intensity, the inclination angle, the surface temperature of the cell panel and the wind load as independent variables; using a power model constructed by taking the wind load, the environment temperature and the residual water stain area as independent variables to obtain average power generation power; and judging a preset time period corresponding to the minimum loss power as the optimal cleaning time of the battery panel by comparing the average power generation power with the standard power generation power. According to the invention, the most appropriate time period can be selected as the guidance time of the washing cleaning mode according to the reduction of the influence of the washing cleaning process on the overall power generation power of the photovoltaic module.

The invention relates to a fuel delivery system (16) of an internal combustion engine, comprising a rotary pump (22) that pumps fuel from a low-pressure region (17) into a high-pressure region (25), said rotary pump (22) having at least one inlet section (42) on the low-pressure side and at least one outlet section (44, 46) on the high-pressure side. The system also comprises a controllable valve device (32) that lies between the inlet section (42) on the low-pressure side and the low-pressure region (17) for controlling the delivered fuel flow. The rotary pump (22) comprises at least two outlet sections (44, 46) which lie one behind the other when seen in the direction of rotation and which are separate from each other, and at least one front outlet section (44), when seen in the direction of rotation, can be hydraulically connected or disconnected.

The invention relates to a drive arrangement for a multi-axle driven motor vehicle having a drive unit. The drive arrangement comprises a distributor gearbox 12 distributing the torque induced by the drive unit 4 to a first drivetrain 5 and a second drivetrain 7, wherein the first drivetrain 5 is continuously drivingly connected to the distribution gearbox 12 in order to transfer torque to a first drive axle 6, and wherein the second drivetrain 7 can be switched to drivingly connect to the distribution gearbox 12 in order to transfer torque to a second drivetrain 8, and a longitudinal driveshaft 24 disposed in the flow of torque between the distribution gearbox 12 and the second drive axle 8; wherein first coupling means 22 are provided for coupling and decoupling the longitudinal driveshaft 24 relative to the drive unit 4 and wherein second coupling means 26 are provided for coupling and decoupling the longitudinal driveshaft 24 relative to the second drive axle 8.

A device for illuminating a surface comprising at least one semiconductor laser rod (1) having a plurality of emitters, wherein the distance between the emitters is smaller than the extent of the emitters in a first direction (X); further comprising Ray converters (3) for converting laser beams emitted from the emitter are constructed such that they diverge the laser beams in a first direction (X) and in a second direction (Y) Divergent exchange on the beam converter (3), wherein the beam converter (3) has such a distance from the laser diode bar (1) that the laser beams of at least two adjacent emitters hit the beam converter (3) at superimposed on each other in the first direction (X).

The invention relates to a hydrostatic running driving device (1) for an all-wheel drive working machine. The hydrostatic running driving device (1) comprises a first hydraulic motor (8) and a second hydraulic motor (17), a driving shaft of the first hydraulic motor (8) is connected with a first gear shifting transmission (11), and a driving shaft of the second hydraulic motor (17) is connected with a second gear shifting transmission (19). The task is to provide this kind of running driving device capable of changing gears with continuous traction force in the running process. The task is solved in the way that in order to change the transmission ratio levels (G1 and G2) of the gear shifting transmissions (11 and 19) in the running process, gear shifting processes which are staggered in terms of time and conducted successively are conducted on the gear shifting transmissions (11 and 19), during gear shifting of the first gear shifting transmission (11), the second gear shifting transmission (19) transmits traction force, and in addition, in the subsequent gear shifting processes of the second gear shifting transmission (19), the first gear shifting transmission (11) transmits traction force.

The invention relates to a wiring (1) of a semiconductor switch (T1), the wiring comprising a gate (G), a collector (C) or a drain, and an emitter (E) or a source, wherein the wiring (1) comprises a capacitor (C1) between the gate (G) and the collector (C) or drain, and a parallel circuit of a resistor (R3) and a diode (V2) is provided in series with the capacitor (C1).

A laser welding system for joining first and second thermoplastic workpieces, and including a clamp, an actuator, and a laser source. The clamp includes first and second clamping structures positioned together to engage opposite sides of the workpieces when they adjoin each other. The first clamping structure has a non-flat or irregular surface, facing the first workpiece. The actuator causes the clamping structures to press the first and second workpieces together. The laser source applies laser radiation having a wavelength of 2 microns toward the workpieces to be joined, while they are pressed together by the clamp, to melt irradiated portions of the workpieces to one another. The first clamping structure transmits substantially all of the energy of the laser radiation through the material. The first workpiece has a non-flat or irregular surface facing the first clamping structure, which substantially conforms with the surface of the first clamping structure.

An improved power supply unit for a vehicle electrical system of a motor vehicle, which has an a.c. generator, that provides a phase signal, having an excitation coil, a field regulator assigned to the excitation coil and a rectifier having rectifier elements for the rectification of the generator voltage supplied by the a.c. generator. The field regulator has a voltage recording range for the evaluation of the phase signal having a minimum value and a maximum value, the maximum value being adjusted to the nominal voltage of a power supply unit of the motor vehicle.

The invention belongs to the field of gearboxes, and particularly relates to an automatic gearbox of an automobile. The automatic gearbox comprises an A gear column body, a B gear column body and a reverse gear system body, a power input shaft and a power output shaft are arranged on the A gear column body, the power input shaft is connected with the output end of an engine rotating clockwise, a first driving gear, a second driving gear, a third driving gear and a fourth driving gear are arranged in the A gear column body, a first ratchet, a second ratchet and a third ratchet which are clockwise in one direction and sequentially inserted in the first driving gear, the second driving gear, the third driving gear and the fourth driving gear are further arranged in the A gear column body, the overall structure of the A gear column body is that the first driving gear and the first ratchet are integrated, the first ratchet is connected with the second driving gear, and the second driving gear and the second ratchet are integrated. According to the automatic gearbox, the service life of the gearbox is prolonged, the power loss is relatively small, and the balanced power demand can make the engine no longer powerless.

A driver circuit has a detector circuit including a high side detection transistor, a resistor, and a low side detection transistor connected to a high side output transistor and a low side output transistor. A clamping circuit converts a high voltage amplitude change signal generated at a connection point of the high side detection transistor and resistor to a signal clamped to a voltage range applied on the low side. An OR circuit outputs a signal taking the logical sum of an inverted control signal and an output of a low side first stage drive circuit. A level shifter circuit outputs a level-shifted signal of the OR circuit to a high side first stage drive circuit. A second OR circuit outputs a signal wherein the logical sum of an output signal of the clamping circuit and the control signal is inverted to the low side first stage drive circuit.

The invention relates to an automobile exhaust gas aftertreatment device (1). A heating device (2) having a plurality of heating elements (5, 6, 7) and a controller (9) matched to the heating device (2), wherein the heating elements (5, 6, 7) are fitted with a first common The switch (10) and the respective second switch (32, 33, 34) can be switched jointly by means of the first switch (10) and individually by means of the second switch (32, 33, 34). The design stipulates that the first switch (10) is arranged separately from the controller (9) and can be controlled by it.

The invention relates to a fuel delivery system (16) of an internal combustion engine, comprising a rotary pump (22) that pumps fuel from a low-pressure region (17) into a high-pressure region (25), said rotary pump (22) having at least one inlet section (42) on the low-pressure side and at least one outlet section (44, 46) on the high-pressure side. The system also comprises a controllable valve device (32) that lies between the inlet section (42) on the low-pressure side and the low-pressure region (17) for controlling the delivered fuel flow. The rotary pump (22) comprises at least two outlet sections (44, 46) which lie one behind the other when seen in the direction of rotation and which are separate from each other, and at least one front outlet section (44), when seen in the direction of rotation, can be hydraulically connected or disconnected.

The invention relates to a vehicle drive train and method for operating a drive train. The vehicle drive-train is equipped with a drive engine, a drive output and a transmission device connected in the power flow between the drive engine and the drive output. The transmission device has at least two transmission units whose transmission ratios can be varied continuously, at least in some ranges, and which are arranged in power-trains running parallel with one another between the drive engine and the drive output. The power-trains can each be functionally connected with a respective axle of thedrive output. At least one shifting element is provided by which the power-trains can be functionally connected in the area between the transmission units and the drivable axles. In addition, a method for operating the vehicle drive-train is described, in which the shifting element is actuated as a function of torque to be transmitted via the transmission device between the drive engine and the drive output.

The invention discloses an original power capacity-increasing and voltage-stabilizing system for a base station. The system comprises a far-end system which comprises 4G base station original power, a far-end control unit and boosted output power, and the 4G base station original power is converted into the boosted output power through a plurality of boosting modules; the near-end system comprises high-voltage input power, a near-end control unit and 5G base station power supply power, and the high-voltage input power is converted into the 5G base station power supply power through a plurality of voltage reduction modules; wherein the two-phase three-wire of the original power of the 4G base station is composed of a null line N, a live wire for supplying power to the 4G base station and a commercial power supply live wire, the voltage of the live wire for supplying power to the 4G base station is 380V, and the voltage of the commercial power supply live wire is 220V. According to the invention, the power system of the existing 4G base station is fully utilized, power is supplied to the newly-built 5G base station after power capacity increase, the power supply stability is good, the power consumption is low, and voltage lines with different sizes can be provided to supply power to the newly-built 5G base station, so that the requirements of different devices of the newly-built 5G base station for different voltage requirements are met.