A semiconductor device comprises a two-dimensional (2D) material layer, the 2D material layer comprising a channel region in between a source region and a drain region; a first gate stack and a second gate stack in contact with the 2D material layer, the first and second gate stack being spaced apart over a distance; the first gate stack located on the channel region of the 2D material layer and in between the source region and the second gate stack, the first gate stack arranged to control the injection of carriers from the source region to the channel region and the second gate stack located on the channel region of the 2D material layer; the second gate stack arranged to control the conduction of the channel region.

A charge pump circuit includes a capacitor, a first switch between the capacitor and a power supply terminal, a second switch between the capacitor and an output terminal, a third switch between the output terminal and the capacitor, a fourth switch between the capacitor and a ground terminal, and a control unit configured to generate control signals for the switches. The control signals include first signals generated during a first period that cause first and third switches to be in an ON state and second and fourth switches to be in an OFF state, second signals generated during a second period that cause first and third switches to be in an OFF state and second and fourth switches to be in an ON state, and third signals generated between the first and second periods, that cause the ON/OFF state of each of the switches to be switched at different times.

A control switch is connected to a power supply voltage and turns on based on a control signal to output a current. A clamp circuit is connected to a load and performs clamp control of the output voltage of the control switch. A current control element conducts or shuts off a current based on the output voltage to be clamp-controlled. A selector switch group includes switches, and performs switching based on a voltage varying with the current control by the current control element, thereby switching between paths for generating an internal power supply. The switch circuit connects or disconnects the coupling between the clamp circuit and the selector switch group.

An SR latch circuit with single gate delay is provided. The circuit has an an enable input and an SR latch. There is first input stage having an input for receiving a set input and having an output for producing a first component of the SR latch circuit output, the first input stage having only one transistor that receives the enable input, the first input stage becoming transparent while enabled, the first input stage having a single gate delay between the input of the first input stage and the output of the first input stage. There is a second input stage having an input for receiving a reset input and having an output for producing a second component of the SR latch circuit output, the second input stage having only one transistor that receives the enable input, the second input stage becoming transparent while enabled, the second input stage having a single gate delay between the input of the second input stage and the output of the second input stage.

A system includes a voltage-controlled oscillator (VCO) to generate an output signal based on an input voltage and a multi-stage delay network to receive the output signal from the VCO. Each stage of the delay network produces a phase-shifted output signal. The system includes a multi-stage digital-to-analog converter (DAC) network, where each stage of the DAC network is associated with a corresponding stage of the delay network. Each stage of the DAC network receives the phase-shifted output signal from its corresponding stage of the delay network and generates a weighted output signal based on the received phase-shifted output signal. The DAC network combines the weighted output signal of each stage. A weighting factor for each stage of the DAC network is selected to reduce harmonic content of the combination of weighted output signals.

A voltage-resistant switch is described. The switch comprises a signal input, a first FET transistor with a first channel with an extended drain and a first gate connector and a second FET transistor with a first channel with an extended drain and a second gate connector. A control signal connector is connected with the first gate connector and with the second gate connector via a second node and with the first channel and the second channel via a second resistor, and a signal connector is connected with the second channel. The voltage-resistant switch can be switched on and off.

A transmission circuit includes: a first transistor, a first current source, a third transistor. The first transistor has a source terminal coupled to a first reference voltage terminal of the transmission circuit and a drain terminal coupled to a first output terminal of the transmission circuit. The first current source is coupled between a gate terminal of the first transistor and a second reference voltage terminal of the transmission circuit. The third transistor has a drain terminal coupled to the first output terminal of the transmission circuit, a source terminal coupled to the second reference voltage terminal of the transmission circuit, and a gate terminal for receiving a first input signal. The first transistor is of a first conducting type, and the second transistor is of a second conducting type different from the first conducting type.

A high-voltage electronic switch includes first and second transistors defining a current flow path between an input and output of the switch. The transistors have a common point of the current flow path and a common control terminal. A control circuit includes a voltage line receiving a limit operating voltage and first and second branches coupled between the voltage line and the common point and common control terminal, respectively. Further transistors are activated, upon turning-off of the first and second transistors, for coupling the branches to the voltage line. The branches include a parallel connected resistor, diode, and string of diodes with opposite polarities. The diode of the first branch plus string of diodes of the second branch and diode of the second branch plus string of diodes of the first branch provide coupling paths between the voltage line and, respectively, the common point and common control terminal.

Capacitors connected between gate terminals of a plurality of parallel-connected power transistors are charged and discharged in each switching cycle to provide a plurality of power transistor control waveforms from a single gate driver waveform that equalize power losses/temperatures or steady-state currents among the plurality of power transistors. The capacitors are charged to different voltages by diverting current from one transistor driver by disabling another power transistor driver at different respective times in response to measured transient or steady state current or temperature or other operational parameter.

An integrated circuit includes a drive circuit with a first inverter circuit with a first transistor of a first conductivity type and a second transistor of a second conductivity type. The drains of the first and second transistors are connected. An output circuit is provided having a third transistor of the second conductivity with a gate connected to the drains of the first and second transistors. A capacitor is connected between the gate and a drain of the third transistor and has a capacitance greater than 0.5 pF and less than or equal to 3.0 pF. A gate width of the first transistor when divided by a gate width of the third transistor has a value of less than 1/100. The output circuit is configured to output a transmission signal from the drain of the third transistor.

A solid state power control apparatus includes: (a) at least one IGBT and at least one FET, for supplying current to a load, and (b) a current controller for shutting off the IGBT and FET. The current controller is arranged to start shut off of the IGBT before it starts shut off of the FET. Further, the current controller is arranged to reduce current flow prior to start of the turn off of the IGBT and FET.

One example discloses an apparatus for power management, including: a circuit having a first power-domain and a second power-domain; wherein the first and second power-domains include a set of operating parameter values; a circuit controller configured to incrementally sweep at least one of the operating parameter values of the first power-domain; a circuit profiler configured to derive a total power consumption profile of the circuit based on the circuit's response to the swept operating parameter value; wherein the circuit controller sets the operating parameter values for the first and second power-domains based on the total power consumption profile of the circuit.

A loop filter with an active discrete-level loop filter capacitor can be used in a VCO (such as for CDR). A loop filter capacitor function is simulated by sensing input loop filter current (such as with a current mirror and source follower in the input leg), and forcing back a loop filter (VCO) control voltage. Loop filter voltage control is provided using a VDAC with a discrete-level VDAC feedback voltage, incremented/decremented based on the sensed loop filter current. In one embodiment, the VDAC voltage is provided as the non-inverting input to an amplifier, with the inverting input providing the control voltage, forced to the VDAC feedback voltage. The VDAC feedback voltage can be provided by increment/decrement comparators based on a voltage deviation on a C2 capacitor (from a reference voltage) that receives the sensed loop filter current (effectively multiplying the C2 capacitance to provide a simulated loop filter capacitance).

An apparatus includes an integrated circuit (IC). The IC includes a power controller, which includes a regulator and a controller. The regulator receives a plurality of input voltages and provides a regulated output voltage. The controller controls the regulator to generate the regulated output voltage from the plurality of input voltages. The power controller provides power to a load integrated in the IC from a set of arbitrary input voltages. The set of arbitrary input voltages includes the plurality of input voltages.

The present invention is directed to an electronic switch device, the device including a housing assembly including a front cover assembly having a user accessible surface, a back body assembly, terminals configured to be coupled to an AC power source and the load; an antenna assembly including an antenna substrate disposed inside the housing assembly adjacent a portion of the front cover assembly, an antenna being disposed on the antenna substrate having a conductive grid structure; and a circuit assembly disposed inside the housing assembly coupled to the terminals, the circuit assembly comprising a printed circuit board, the printed circuit board including a ground plane, the circuit assembly being electrically connected to the antenna assembly via a conductor, the printed circuit board being separated from the antenna assembly by a predetermined distance, the circuit assembly including a relay switch having at least one solenoid winding connected to the circuit assembly and a set of contacts.

A power conversion system may include a plurality of power devices and a sensor operably coupled to at least one of the plurality of power devices and configured to detect a voltage, current, or electromagnetic signature signal associated with the plurality of power devices. The power converter may also include circuitry operably coupled to the plurality of power devices and the sensor. The circuitry may send a respective gate signal to each respective power device of the plurality of power devices, such that each respective gate signal is delayed by a respective compensation delay that is determined for the respective power device based on a respective time delay of the respective power device and a maximum time delay of the plurality of power devices.

An example circuit includes: a slew rate driver configured to provide an output voltage; a first voltage provider configured to provide a first input voltage to the slew rate driver in response to the output voltage being within a first range; and a second voltage provider configured to provide a second input voltage to the slew rate driver in response to the output voltage being within a second range. The slew rate driver is further configured to change the output voltage based at least in part on the first input voltage or the second input voltage.

To provide a clock selection circuit capable of reducing clock omission generated when switching from a state of being synchronized with a first clock to a second clock. The clock selection circuit is equipped with a clock detection circuit which detects a first clock to output a detected signal, a switch which outputs the first clock when the detected signal is at a first level and outputs a second clock when the detected signal is at a second level different from the first level, and a one-shot circuit which outputs a one-shot pulse in response to switching of the detected signal from the first level to the second level. The output of the switch and the output of the one-shot circuit are added to be outputted as an output clock.

A circuit includes a first node, a first inverter connected to the first node and a second node. A variable resistive element is connected to the second node and a third node. A first switch is connected to the second node, a first capacitive element is connected in series with the first switch and the third node, a second switch connected to the second node, a second capacitive element is connected in series with the second switch and the third node, and a second inverter is connected to the third node and a fourth node.

A clock-signal generator circuit, for generating an output clock signal starting from an input clock signal, includes: a monostable stage having a clock input configured to receive the input clock signal, a control input configured to receive a control signal, and an output configured to supply the output clock signal having a duty cycle variable as a function of the control signal; and a feedback loop, operatively coupled to the monostable stage for generating the control signal as a function of a detected value, and of a desired value, of the duty cycle of the output clock signal.

A device (442) for producing a dynamic reference signal (UREF) for a control circuit for a power semiconductor switch comprises a reference signal generator (442) for providing a dynamic reference signal (UREF), which has a stationary signal level after elapse of a predefined time following a switching process of the power semiconductor switch, a passive charging circuit (450) which is configured to increase a signal level of the dynamic reference signal in reaction to a switching of a control signal of the power semiconductor switch from an OFF state to ON state for at least one part of the predefined time above the stationary signal level, in order to produce the dynamic reference signal and an output (A) for tapping the dynamic reference signal (UREF).

In accordance with an embodiment, an adjustable capacitance circuit comprising a first branch comprising plurality of transistors having load paths coupled in series with a first capacitor. A method of operating the adjustable capacitance circuit includes programming a capacitance by selectively turning-on and turning-off ones of the plurality of transistors, wherein the load path of each transistor of the plurality of transistors is resistive when the transistor is on and is capacitive when the transistor is off.

A radio-frequency (RF) switch includes a field-effect transistor (FET) disposed between a first node and a second node, the FET having a source, a drain, a gate, and a body. The RF switch further includes a coupling circuit including a first path and a second path, the first path being connected between the gate and one of the source or the drain via a first resistor in series with a first capacitor, the second path being connected between the body and the one of the source or the drain via a second resistor in series with a second capacitor, the coupling circuit configured to allow discharge of interface charge from either or both of the gate and body.

A flowing electrolyte fuel cell system design (DHCFC-Flow) is provided. The use of a flowing oxygen-saturated electrolyte in a fuel cell offers a significant enhancement in the cell performance characteristics. The mass transfer and reaction kinetics of the superoxide/peroxide/oxide ion (mobile oxygen ion species) in the fuel cell are enhanced by recirculating an oxidizing gas-saturated electrolyte. Recirculating oxygen-saturated electrolyte through a liquid channel enhances the maximal current observed in a fuel cell. The use of a oxygen saturated electrolyte ensures that the reaction kinetics of the oxygen reduction reaction are fast and the use of convection ameliorates concentration gradients and the diffusion-limited maximum current density. The superoxide ion is generated in situ by the reduction of the oxygen dissolved in the gaseous electrolyte. Also, a dual porosity membrane allows the uniform flow of fuel (e.g., methane) on the fuel side, without allowing phase mixing. The capillary pressure for liquid intrusion into the gas phase and vice versa is quite large, estimated to be 1-10 psi. This makes it easier to control the fluctuations in gas/liquid velocity which might otherwise lead to phase mixing and the loss of fuel cell performance. In one variation, a dual-porosity membrane structure is incorporated in the system to allow uniform flow of fuel and prevent mixing of fuel with a liquid electrolyte.

A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.

A crosslapper receives a card web and folds it into a lap intended to be needle-punched or consolidated by other ways. The web includes zones which are more condensed, having a spectrum of orientation of fibers with a component parallel to the width of the web, alternating with less condensed zones having a longitudinal unidirectional spectrum of orientations. The zones which are less condensed are used to form the edge zones of the lap. The result is that the lap has different respective spectra of orientation which pre-compensate for the unwanted changes produced by the needle-punching or other consolidation which follows. A needle-punched lap is obtained having a uniform MD/CD ratio (relationship between longitudinal and respectively transverse tensile strengths) or having a sought profile of the MD/CD ratio across the width of the lap.

A method for mixing short staple and down cluster by a dry processing utilizes an air tool to blow the short staple over, so that the scattered short staple is mixed in the down cluster. Stirring blades are further applied for stirring. Chemical agents are needless, no pollution is generated, and processing time is preferably reduced since the mixture does not have to be soaked in the chemical agent. Both the processing time and the manufacturing cost are decreased. Preferably, a proportion of the short staple to the down cluster is adjustable for different needs and divergent warmth retaining effects.

Apparatus and methods for automatically training (i.e., straightening) saw blades along a saw mandrel are disclosed.

The invention relates to a saw-tooth clothing for rollers of a carding machine or a carder. The saw-tooth clothing has a multiplicity of successively arranged teeth, wherein each tooth has a tooth front and a tooth back and a tooth tip. The tooth backs of the teeth have in each case a certain distance from the tooth front of the in each case following tooth and form a tooth space which extends from a tooth root to the tooth tips. Between the tooth tips and the tooth root, the teeth have in each case on their tooth back and on their tooth front at least one embossment which reduces the distance between the tooth back of the teeth and the tooth front of the in each case following tooth.

In order to produce air-laid non-woven fabrics with an adjustable strength ratio of the production direction and 90° to the production direction, two non-woven laying machines are set at an angle to the production direction.

The present invention relates to a method for the continuous production of laid staple fiber fabrics with aligned fiber orientation, in which method the laid fabrics are produced by continuous plaiting down of carded fiber web at defined laying angles onto a synchronized transport belt (1), wherein the carding machine (2) and plaiting means (3) arranged downstream of it are arranged at an acute angle with respect to the advancing direction of the transport belt. Said laid staple fiber fabrics are used for producing high-strength fiber-reinforced plastic composites, as are used in wind power plants, aircraft construction and the automotive industry. In particular in the loading direction, said composites have high composite strengths and rigidities, to which end a defined fiber orientation is required. In addition to a defined orientation of the finite fibers, the laid fabrics also have a defined mass per unit area.

The purpose of the invention is to reduce the abrasive impact of the fiber or the yarn on the rollers coated with elastic material, which are used for drafting and guiding purposes in yarn production techniques, and thus keep the operating conditions and yarn quality parameters constant. The fiber on the top rollers coated with elastic material especially in the mechanical ring compact yarn production among the yarn production techniques, is an apron cladding method, over the top roller and the bearing guide arms connected to a bearing body found on the bearing unit placed on the pressure arm, in a way that it would cover these together. The method includes the operation steps of stretching the aprons by application of tension via a tension component and, while the fiber drafting operation continues, the bearing unit carrying the aprons being shifted in the horizontal plane in certain intervals.

A drawing frame (1) is described for drawing a fiber slubbing (14) of a workstation of a textile machine having two roller pairs (2, 3) which are arranged behind one another in the transport direction (A) and in each case contain a drafting roller (4, 6) which can be driven, wherein the first drafting roller (4) in the transport direction (A) is assigned a guide apron (8) which wraps around this drafting roller (4) and a guide table (10) which is arranged between the first (4) and the second (6) drafting roller. It is provided according to the invention that the first drafting roller (4) is mounted in a bearing slide (19) which can be displaced in the transport direction (A), and the second drafting roller (6) is mounted in a bearing block (22), and that the guide table (10) is fixed on the bearing block (22) of the second drafting roller (6).

A wire profile comprises a rib portion and a plurality of teeth over the length of the rib portion. The teeth are sloped with a back slope representing the backbone of the teeth and a front slope representing the side in direct contact with fiber. The back slope has a tangent forming a hack angle with the rib portion, and the front slope is divided into at least two segments, a tip segment converging with the back slope to form a tip of the teeth and serving to penetrate between fibers, and an undercut segment to retain the fibers. The undercut segment has a tangent forming an undercut angle with the rib portion, and the undercut angle is at each point in the undercut segment greater than the maximum of the hack angle and smaller than the smallest value of the tip angle.

A wire profile having a rib portion and plurality of teeth over the length of said rib portion, wherein said plurality of teeth is inclined at an angle with respect to the said rib portion, wherein said teeth has a front portion and a back portion, wherein said front portion is the inner portion of the said teeth leaning towards the rib portion and said back portion is the outer portion of the said teeth, and wherein at least one teeth with said back portion comprises at least one nose cut segment.

A method and a device for the dry forming of a fiber web, in which a multiplicity of fibers or fiber mixtures are fed to a forming head by means of an air flow is described. The forming head produces a fiber stream which is introduced into a clearance of a forming zone between the forming head and a laydown belt. To obtain as uniform a construction of the fiber layer as possible during the laying down of the fibers, the fibers of the fiber stream run through the clearance within the forming zone with free sections of different lengths. To this end, the forming head and the laydown belt are held in a non-parallel arrangement, with the result that the clearance is formed by different spacings between the laydown belt and the forming outlet of the forming head.

A reclaimer cylinder for use in reclaiming cotton seeds containing spinnable lint from partially ginned cotton seeds utilizes channel saws mounted axially on a cylindrical body with axially closely spaced teeth that virtually eliminate the variation in likelihood the teeth will fail to grasp the fibers present on such cotton seeds. Triangular grid bars facilitate removal of fully ginned seeds that are not entrained in fibers of other seeds.

A fiber laying machine includes a laying head with a roller able to pivot about an axis of rotation and to apply a plurality of preimpregnated fibers to an application surface by rolling over the application surface. The fibers are distributed along a lower generatrix of the roller and in contact with an exterior surface of the roller over an angle of wrap. The roller includes a cylindrical body, pivoting rings around the body, and means for immobilizing the pivoting rings with respect to the body in a direction parallel to the axis of rotation. The pivoting rings are able to pivot independently of one another.

A working assembly (1) includes a rotatable hollow drum or cylinder (2) having a cylindrical wall (3) with ends having transverse header walls (4) with openings (16, 17), and with a longitudinal shaft (5). The external lateral surface of the cylindrical wall (3) has a clothing device intended to interact with the fibers being carded. First and second support uprights (6, 7) are fixed in operation, and adapted to support the ends of the shaft (5) of the drum or cylinder (2) for rotation about a preferably horizontal axis. The support uprights (6, 7) and the drum or cylinder (2) are configured and coupled with each other such as to define at least one fluid path for a flow of a refrigerating fluid, which extends through the openings (16, 17) and inside the drum or cylinder (2) and is adapted to cause cooling of the lateral cylindrical wall (3) thereof.

A pumping system frame assembly for use in supporting a horizontal pumping system on a platform includes a central body assembly, a motor plate connected to the central body assembly and a plurality of platform support assemblies connected to the central support member. The central body assembly includes a central support member that has an upper face and a pair of side rails connected to the upper face. A central brace extends along at least a portion of the central support member.

A securing device for mechanical components that is comprised of the securing device is designed as a longitudinal plastic strip comprised of a first complementary tab and a second complementary tab. The first complementary tab and the second complementary tab interlock together and rest flush against one another in a manner that lines up the hole of the first complementary tab with the hole of the second complementary tab. The securing device may be surrounded by a cushion to improve the securing functionality of the device.

A raceway and method of forming a raceway is disclosed in which one or more intumescent layers are disposed on the raceway.

A connection device for setting up an arrangement of a plurality of loudspeaker boxes that are suspended beneath one another comprises a first assembly rail which is provided for assembly on a first loudspeaker box and to which a latching part is attached, and a second assembly rail which is provided for assembly on a second loudspeaker box and to which a retaining element that interacts with the latching part is attached. Herein, a free path length of a longitudinal displaceability of the latching part in relation to the first assembly rail is preselectable. Furthermore, the position of the retaining element in relation to the second assembly rail is preselectable.

A connector hub assembly usable as a standalone module or as a component in a work space system. The connector hub assembly optionally includes features for connecting one or more arms of a support frame for supporting a modular workspace system including desk space, cabinet space, view screens, electronic equipment, and/or other workspace system components.

The subject matter discloses an apparatus for securing a mobile device to a steering wheel, comprising: a main flap connected to a rear surface of the mobile device, said main flap is made of a rigid material; a holder attached to the main flap, said holder secures the mobile device to the main flap; an elliptic unit extending from the main flap and surrounding the steering wheel. The apparatus may be part of a kit that also comprises a second holder attached to the rear surface of the mobile device, said second holder is in contact with the first holder.

An intermediate support structure for an escalator or moving walk having a dampening device with slots formed therein allowing a supported escalator truss to be free to move laterally to accommodate lateral displacement caused by story drift during an earthquake or seismic event.

A vibration isolator with a pneumatic spring that is effective only in vertical direction, the pneumatic spring including a working space in which a vertically effective actuator is disposed.

A wedge member for securing an electrical conductor box within a hollow concrete block which is to be incorporated in a concrete block wall. The wedge member includes an elongated member dimensioned for a force fit within a hole within the concrete block.

A hold down assembly for an electronic unit includes a locking washer having a cone at a front end thereof. The locking washer has a tang provided in the cone and extending forward from the cone. The cone is configured to receive a mounting hook of the electronic unit with a first side of the tang bearing against the mounting hook to lock the position of the locking washer relative to the mounting hook. An actuator knob is rotatably coupled to the locking washer. The actuator knob is configured to be tightened to a threaded shaft to tighten the hold down assembly to the electronic unit and drive the locking washer toward the mounting hook.

An undermount drawer slide mounting clip releasably attaches a drawer to a drawer rail assembly mounted in a cabinet carcass. The apparatus is capable of effecting positional adjustments of the drawer in three directions without removing the drawer from the cabinet carcass. The apparatus is comprised of a body slidingly engaged with a bonnet. A trigger pivotally connected between the body and the bonnet. A spring loaded catch slidable within the bonnet and acted on by the trigger to releasably attach the apparatus to a drawer rail assembly. A threaded spindle rotates within the base and adjusts the horizontal position of the drawer. A ramp adjustably connected to the base adjusts the vertical position of the drawer. A plunger extends from a housing connected to the body to adjacent the drawer rail assembly and adjusts the depth of the drawer.