89results about How to "Reduce current flow" patented technology

A storage element 3 has an arrangement in which magnetization fixed layers 31 and 32 are provided above and below a storage layer 17 for storing information based on the magnetization state of a magnetic material through intermediate layers 16 and 18, directions of magnetizations M15 and M19 of ferromagnetic layers 15 and 19 closest to the storage layer 17 of the magnetization fixed layers 31 and 32 above and below the storage layer 17 are opposite to each other, the two intermediate layers 16 and 18 above and below the storage layer 17 have a significant difference between sheet resistivity values thereof and in which the direction of a magnetization M1 of the storage layer 17 is changed with application of an electric current to the lamination layer direction to record information on the storage layer 17.

The present invention provides a system and method for operating a rechargeable battery, the system comprising: current maintaining device for maintaining a predetermined current to the rechargeable battery until the rechargeable battery reaches a predetermined maximum voltage; voltage maintaining device for maintaining a predetermined voltage to the rechargeable battery until a predetermined minimum current is delivered to the rechargeable battery; determining device for determining a cyclical charge value delivered to the rechargeable battery by the current maintaining device and the voltage maintaining device during a cycle; and a correction device for correcting the determining device when charge is not being delivered to the rechargeable battery, on the basis of the charge value.

A storage element includes a storage layer, a fixed magnetization layer, a spin barrier layer, and a spin absorption layer. The storage layer stores information based on a magnetization state of a magnetic material. The fixed magnetization layer is provided for the storage layer through a tunnel insulating layer. The spin barrier layer suppresses diffusion of spin-polarized electrons and is provided on the side of the storage layer opposite the fixed magnetization layer. The spin absorption layer is formed of a nonmagnetic metal layer causing spin pumping and provided on the side of the spin barrier layer opposite the storage layer. A direction of magnetization in the storage layer is changed by passing current in a layering direction to inject spin-polarized electrons so that information is recorded in the storage layer and the spin barrier layer includes at least a material selected from oxides, nitrides, and fluorides.

One aspect of an embodiment of the present disclosure is a braking apparatus for an electric power tool that includes a switching circuit with six switching elements and a brake control unit. The brake control unit switches any one selected switching element of three switching elements forming one selected switch group of a high-side switch group and a low-side switch group to an off state from an on state at a timing at which braking current flows through a diode connected in parallel to the selected switching element upon turn-off of the selected switching element.

A semiconductor device includes a first region having a first semiconductor material and a second region having a second semiconductor material. The second region is formed over the first region. The semiconductor device also includes a current blocking structure formed in the first region between first and second terminals of the semiconductor device. The current blocking structure is configured to reduce current flow in the first region between the first and second terminals.

A coil structure for a rotary electric machine includes phase coils for magnetic flux generation. Each of the phase coils includes a plurality of first element conductors, a plurality of second element conductors, a plurality of first crossover portions, and a plurality of second crossover portions. The plurality of second element conductors are provided in a plurality of second slots among slots. The second slots are provided in a circumferential direction of a stator at a pitch of a first predetermined interval. The second slots are shifted in phase by a second predetermined interval with respect to first slots in the circumferential direction of the stator. The first predetermined interval is set to be an interval equivalent to N times a unit pitch. The second predetermined interval is set to be an interval smaller than the first predetermined interval.

A method for charging a battery is disclosed, wherein a constant current charging current is periodically adjusted as needed such that the change in battery voltage increases approximately linearly during the charging period. In some embodiments the charging is in three phases. An optional first phase charges with a low current until the battery voltages rises to a certain minimum. During a secondphase a constant current is provided while the battery voltage is monitored. The second phase constant current is periodically increased if the rate of change of battery voltage is less than a predetermined value and is decreased if the rate of change of battery voltage is more than the predetermined value. When the battery voltage attains a predetermined value, a third phase begins wherein a constant voltage is applied to the battery while the battery current draw is periodically monitored. Charging is stopped when the battery current draw falls to a predetermined value or, in some embodiments, when the charging current drops to a value that is a certain percentage of the charging current at the termination of phase two. In one embodiment the battery voltage is monitored to determine a possible battery failure, for example in the case of the battery voltage decreasing during the constant current charging of phase two. In some embodiments the battery is shorted out in response to detection of a possible failure.

An LED drive circuit of the disclosed subject matter can include an LED unit and a serial circuit connected in parallel therewith. The serial circuit includes a resistor and a positive temperature coefficient resistor having a positive linear temperature coefficient. A voltage across the positive temperature coefficient resistor is fed back to an output control circuit. An output voltage that is PWM-controlled on the basis of a reference voltage set at the output control circuit is used to drive the LED unit.

The invention discloses a light emitting element driving circuit with low power consuming and high reliability. The light emitting element driving circuit drives a surface-emitting element, and includes a bias current driving circuit that supplies a generally constant bias current to the surface-emitting element, a modulation current driving circuit that supplies to the surface-emitting element a modulation current superimposed on the bias current, and a temperature detection circuit that detects the temperature of the surface-emitting element, wherein the modulation current driving circuit decreases the current amount of the modulation current, when the temperature detected rises. The bias current driving circuit may preferably supply the bias current to the surface-emitting element through a coil, and the modulation current driving circuit may preferably supply the modulation current to the surface-emitting element through a capacitor.

An overvoltage protection circuit for interposing between an input voltage and a supply voltage is described. The overvoltage protection circuit includes switch circuitry connected to and passing current between an input voltage node and a supply voltage node, the input voltage node corresponding to the input voltage and the supply voltage node corresponding to the supply voltage. Switch control circuitry senses the supply voltage and regulates current flow through the switch circuitry in response thereto.

A highly efficient circulator system is provided, useful for hydronic systems, including both heating and cooling systems. The stand-alone circulator motor is controllable by input from certain sensors, preferably thermal sensors, which provide data enabling the controller of the brushless pump motor to vary its flow output to meet changes in systems loads. The circulator has a ceramic permanent magnet rotor, such as a ferrite, with an electronically, preferably sinusoidally, commutated, electro-magnetic stator controlling the input of electrical power.

The invention discloses an overcurrent protector for electric power. The overcurrent protector comprises a fixation ring. The inner ring part of the fixation ring is rotationally connected with a rotary disc; a section of conductive layer and a resistance layer are arranged on the fixation ring; a conductive block is arranged in the rotary disc; the conducting layer is electrically connected withan external power supply conveying line; a gear is fixedly connected to the rotation center of the rotary disc; the gear is meshed with a toothed bar; the bottom of the toothed bar is connected with atransmission device; the transmission device comprises a connecting rod; the bottom of the connecting rod is connected with a sleeve; and a piston is connected in the sleeve in a sealed and sliding mode. The overcurrent protector has the advantages that metal solid sodium realizes two morphological changes of liquefaction and gasification at different heating temperatures under an overload current and a short-circuit current, and the two states are respectively processed under the action of the transmission device; during the short-circuit current, a circuit is disconnected, and during the overload current, a larger resistor is additionally connected; and therefore, the functions of protecting and adjusting the circuit current are achieved.

Controls the power consumption of display devices with current-driven elements such as EL. The current control circuit 300 is provided between the power supply circuit 200 and the power supply line VL that supplies driving current to the organic EL elements 50 provided in the respective light emitting elements of the display panel, and detects the amount of current flowing from the power supply circuit 200 through the power supply line VL. When the flow rate increases, the power supply voltage Vdd applied to the power supply line VL is lowered, thereby reducing the current flowing through the organic EL element 50 . Alternatively, the contrast and luminance level of display data supplied to each EL element 50 are controlled according to the detected current amount, and the contrast and luminance level are lowered to limit the current flowing through the organic EL element 50 when the current amount increases. In this way, the amount of current flowing through the organic EL element 50 can be limited, and the power consumption of the display device will not be too large.

The invention discloses a damping method. The method is characterized by including the steps that a first magnet and a second magnet which are fixedly connected with a buffered object are arranged between the buffered object and a transfer object for applying acting force to the buffered object, one end of a first elastic element acts on the first magnet or the second magnet, and the other end of the first elastic element acts on a third magnet, so that the acting force applied to the buffered object by the transfer object is reduced, and the magnetic pole directions of the first magnet, the second magnet and the third magnet are the same; and the transfer object and the buffered object are relatively static in the vertical direction and the first elastic element is in the balanced state. By the adoption of the damping method, the attraction among the magnets is used for balancing elastic force making the buffered object vibrate ceaselessly, a special-rigidity spring is provided actually, the rigidity can be changed by setting factors such as the magnetic force among the magnets and the performance of the elastic element according to the conditions of different vehicles, the application range is wide, the damping effect is remarkable, and cost is low.

The present invention discloses a trigger holding device, which comprises a first controllable switch circuit, a control circuit, a second controllable switch circuit, a first current limiting circuit, a second current limiting circuit, and a normally open switch. The input end of the first controllable switch circuit is connected with a power supply. The control end of the first controllable switch circuit is connected with the output end of the first current limiting circuit. The output end of the first controllable switch circuit is connected with the input end of the control circuit. The output end of the control circuit is connected with the first input end of the second current limiting circuit. The second input end of the second current limiting circuit is grounded. The output end of the second current limiting circuit is connected with the control end of the second controllable switch circuit. The input end of the second controllable switch circuit is grounded. The output end of the second controllable switch circuit is respectively connected with the first input end of the first current limiting circuit and the first contact of the normally open switch. The second input end of the first current limiting circuit is connected with the power supply. The second contact of the normally open switch is grounded. By means of the trigger holding device, the working sate caused by the single trigger operation can be held all the time after the single trigger operation.

A busbar unit formed by insert-molding a plurality of busbars, said busbars being arranged in parallel in the axial direction of a stator. Each busbar is provided with the following: a main body that extends in the circumferential direction of the stator; an insertion hole formed in said main body, wherein a supporting pin that supports the main body of another busbar during insert-molding is inserted through said insertion hole in the axial direction of the stator; and protrusions that are provided on the sides of the main body at positions corresponding to the insertion hole and increase the cross-sectional area of the main body.

The invention provides an n-phase integrated step-down converter (10). The converter (10) includes a controller (20) and a plurality of circuits (12), each of which is operatively connected to the controller (20). The controller controls a plurality of circuits (12) to respectively output a plurality of current signals and generate an output voltage signal, each of the plurality of current signals having an associated phase. By applying the n-phase concept of the present invention, the amount of current to be delivered per phase (ie each of the multiple circuits) is reduced. This directly reduces conduction losses per phase. Since the current per phase is lower, smaller MOSFETs can be used in each of the multiple circuits. The smaller MOSFETs are easier to switch. Therefore, the switching loss of each phase is reduced. Reducing these losses will allow the present invention to achieve high efficiency. Integration makes all components physically closer and can be switched more quickly. Higher switching frequencies allow for smaller and fewer passive components. Integration also minimizes the overall cost of the converter (10).

The invention discloses a method and apparatus for processing display data in an electronic device. A display data controlling method of an electronic device is provided. The display data controlling method includes transferring a first image of a first color bit format from a processor of the electronic device to a display unit of the electronic device or being functionally connected with the electronic device; detecting, by the processor, a screen transition; converting, by the processor based on the detection, a color bit format of second image corresponding to the screen transition into a second color bit format; and transferring the second image which is converted into the second color bit format from the processor to the display unit through an interface.

An optical resonator apparatus includes an optical resonator unit wherein ring optical resonators each including a first optical waveguide and a resonance wavelength adjustment electrode are coupled in cascade connection and round-trip lengths of the ring optical waveguides are different from each other and vary in order from an input side to an output side, and a controller that adjusts a resonance wavelength of each ring optical resonator in order beginning with the ring optical resonator provided at the most input side so as to match with an input light wavelength and, when an inter-channel occurs, adjusts the resonance wavelength of the first ring optical resonator from the input side so as to match with a second-matching input light wavelength and adjusts the resonance wavelengths of the second and succeeding ring optical resonators from the input side so as to match with the first-matching input light wavelength.

The invention discloses a current-limiting protection circuit and a control method thereof. The current-limiting protection circuit is arranged between a power supply end and an equipment end, and comprises a first loop comprising a first switch member and a second loop comprising a second switch member, the first loop is connected with a power supply end and the equipment end and is controlled bythe first switch member to be on and off, the second loop is connected with the power supply end and the ground and is controlled by the second switch member to be on-off, the first switch member adopts a PMOS transistor, a trigger resistor R5 connected in parallel between the source electrode and the grid electrode of the circuit provides a conduction voltage, the second switch member adopts a switching triode Q2, a resistor module is connected in series in the first loop, and after the current in the first loop rises to a preset value, the switching triode Q2 is conducted, the trigger resistor R5 is short-circuited, the first switch piece is disconnected, and the first loop is disconnected, so that the purpose of current-limiting protection is achieved; and the resistor module is arranged in a form that a plurality of first resistors are connected in parallel, and at least one of the first resistors is arranged to be an adjustable resistor, so the upper limit value of current limiting of the current-limiting protection circuit can be adjusted.

The invention discloses a wireless communication module and its power saving control method. The wireless communication module contains a control unit and a communication chip. The control unit receives a control signal and outputs a first signal and a second signal according to the control signal, wherein a central processing unit transmits different control signals according to a sleep mode or shutdown mode. When the central processing unit judges as the sleep mode, a control signal of a low voltage level is transmitted to the control unit, and the control unit transmits a first signal and a second signal of the low voltage level to the communication chip such that the communication chip enters the sleep mode . When the central processing unit judges as the shutdown mode, a power signal is transitioned to the low voltage level and it lasts for a first time section. And then, the central processing unit transitions the first and second signals to the low voltage level within the first time section such that the communication chip enters the shutdown mode.