106results about How to "Reduce electrical power consumption" patented technology

Even when, for example, electric charge is injected into the output transistor due to external factor such as a noise from the outside, to prevent the step-down voltage from rising, the step-down circuit is comprised of an N channel type output transistor which controls the voltage at the control end, a booster, which is connected to the control end of the output transistor and raises the voltage at the control end and a discharge circuit, which discharges the electric charge at the control end of the output transistor so that the power supply voltage inputted from the input end is stepped down to a desired step-down voltage and outputted from the output end.

A clothes dryer provided with a washing tub, an air circulator, and a heat pump and drying laundry by operation of the air circulator and the heat pump. The rotational speed of a compressor is changed by controlling frequency, and the clothes dryer can be operated by selection of either a quick-drying mode for drying the laundry in a relatively short time by changing a drive frequency of the compressor or a saving mode for drying the laundry in a time longer than the time of the quick-drying mode. In the saving mode, the compressor is driven in a frequency band providing a high coefficient of performance.

Pooled resources including remotely startable and stoppable computing resources are activated according to a predictive load model. The model includes alert events for providing respective resource activation levels representing either an increase or a decrease in the resource utilization model expected to occur after the respective alert events. If a detected alert event corresponds to an increase, then selected ones of the pooled resources are started. If the detected alert event corresponds to a decrease, then an actual load level is checked, and selected ones of the pooled resources are stopped if the actual load level is less than the respective resource activation level corresponding to the detected alert event.

The invention relates to an energy-saving gas conditioning furnace and thermal processing method for the hot rolling of seamless steel pipes, which belongs to the field of thermal processing of seamless steel pipes and specifically relates to a gas conditioning furnace and process capable of implementing quenching and tempering processes of seamless steel pipes. The gas conditioning furnace comprises a kiln body (11) and a roller way transmission part, and is characterized in that the front end of the kiln body (11) is provided with an automatic feeding device (5), both sides of the kiln body(11) are respectively provided with the roller way transmission part and a temperature control device, and an electrical control device is arranged outside the kiln body (11). The method comprises the following steps: moving seamless steel pipes into the kiln body (11) by means of the automatic feeding device (5), gradually and sufficiently heating in the kiln body (11), quickly moving the seamless steel pipes (9) into a straightener by means of a quick transmission device, and performing straightening and quenching procedures. By adopting gas heating, electric power consumption is reduced, so that the production scale can be expanded; the kiln body ensures that the seamless steel pipes can be sufficiently and uniformly heated in the kiln body; the seamless steel pipes can be quickly discharged from the kiln body by the quick transmission device, thereby satisfying the optimal temperature required for the quenching and tempering processes; and the invention has the advantages of shortaverage time for finishing the conditioning process, low cost and the like.

A magnetic encoder having a magnetic sensor composed of SVGMR elements, in which a signal output with a half of a cycle of magnetic regions on a magnetic medium. The magnetic encoder comprises the magnetic medium, on which first magnetic regions and second magnetic regions are oppositely magnetized along the medium extending and disposed successively and alternately with each other, and the magnetic sensor that has an even number of SVGMR elements and is movable relatively to the medium along the medium extending. Magnetizations of pinned magnetization layers of all the SVGMR elements are directed in a same direction along the medium extending. Each of the even number of SVGMR elements in the magnetic sensor is apart by a half of the sum of a first magnetic region length plus a second magnetic region length from each other along the medium extending, and the even number of SVGMR elements are connected in series so that a cycle of resistance change of the magnetic sensor is a half of a cycle length of the first and the second magnetic regions on the medium and the signal output with high resolution can be obtained.

According to one embodiment, a GPS clocking device comprises a computing module, a storage module, a reading module, and a correction module. The computing module receives a GPS signal transmitted from a GPS satellite, and computes a receiving position of the GPS signal in the standard coordinate system of the GPS based on the GPS signal. The storage module stores position information which indicates areas different from each other in the employed standard time, and is represented by the standard coordinate system, and information on the time difference between the standard time of each area and standard time of the GPS. The reading module reads time-difference information corresponding to an area to which the receiving position computed by the computing module corresponds from the storage module. The correction module corrects the current time indicated by the time information included in the GPS signal by using the time-difference information.

The invention discloses a portable mosquito repelling/fragrance device. The portable mosquito repelling/fragrance device comprises a shell, a repellent/essential oil pot, an electric heating atomizer, a battery and an air pump. The portable mosquito repelling/fragrance device is characterized in that the repellent/essential oil pot is connected with the electric heating atomizer through a siphon, the electric heating atomizer is connected with the air pump in a controlling mode through a circuit board, a power line of the atomizer and a power line of the air pump are connected to a pulse power supply switch, and the pulse power supply switch is controlled through a switch in the circuit board. A control method of the portable mosquito repelling/fragrance device is characterized in that the circuit board starts a pulse power supply through a control switch so that the pulse power supply can be supplied to the atomizer and the air pump. The portable mosquito repelling/fragrance device has the advantages that the rapid mist (repellent/essential oil) forming-intermittent releasing-rapid spreading method is adopted, the smell released by the portable mosquito repelling/fragrance device is pulsatile instead of constant, and the phenomenon of smell fatigue caused by an existing mosquito repelling/fragrance device can be effectively avoided as long as the frequency is proper. By the adoption of the control method of the portable mosquito repelling/fragrance device, power consumption can be reduced greatly.

A micro power outages compensation module for at least one server includes one or more capacitive storage element for storing electrical energy which is releasable for compensating the outages, the module futher including a controller for the charging and/or the discharge of the capacitive storage element(s), limiting the charging and/or discharge current of the capacitive storage element(s) sufficiently to enable hot plugging and/or unplugging of the module even during operation of the server.

The present invention provides a projection apparatus, comprising: a light source; at least one spatial light modulator for modulating illumination light from the light source by a plurality of pixel elements by using different modulation states; a light source control unit performing a modulation control of the light source; and a spatial light modulator control unit generating, from an input image signal, a control signal for driving the spatial light modulator, wherein: the light source control unit has a function of receiving data corresponding to the control signal generated by the spatial light modulator control unit, controlling a parameter of an emission pulse of the illumination light emitted from the light source, and thereby adjusting an emission intensity of the illumination light.

[Objective]

To provide a digital filter circuit and a digital filter control method which are capable of reducing circuit scale and power consumption for filter processing in a frequency domain such as an overlap FDE method.

[Solution]

A digital filter circuit according to the present invention includes: an overlap addition means for giving an overlap of M data (M is a positive integer) between the block and the previous block; an FFT processing means for transforming the generated block by FFT processing; a filter computation means for performing filter processing to the transformed block; an IFFT means for transforming the block, which the filter processing was performed to, by IFFT processing; an overlap removal means for removing M units of data from both ends of the transformed block; and a clock generation means for setting the frequency of a filter processing clock signal based on a value of M, wherein the filter processing clock signal drives the data output unit of the overlap addition means, the FFT means, the filter computation means, the IFFT means, and the input unit of the overlap removal means.

The invention provides an active power-factor correction circuit device which comprises a segment linear gain circuit, an error amplifier, a pulse width modulation controller and a pulse width modulation signal generator. The segment linear gain circuit is used for receiving feed-forward signals and generating corresponding gain signals, wherein sizes of the gain signals and sizes of the feed-forward signals are correlated in a broken line mode. The error amplifier is used for generating error signals according to output voltage of an alternating-current-to-direct-current converter. The pulse width controller is used for generating control signals according to the gain signals, the error signals, and the output voltage after being rectified of the alternating-current-to-direct-current converter. The pulse width modulation signal generator is used for generating pulse width modulation signals used for controlling a power switch of the alternating-current-to-direct-current converter according to the control signals. As a segment linear gain circuit is utilized to replace a traditional squarer, circuit complexity of an active power-factor correction circuit can be lowered, needed bias voltage sources are reduced, a circuit area is reduced, and electricity power consumption and cost are lowered.

The invention relates to the field of electronic product production testing, and particularly relates to a dual-mode time service machine. The time service machine comprises a Beidou 2nd generation /GPS dual-mode receiver module, a power supply module, a counting module, a CPU control module and an output module. According to the invention, satellite signals are received by using a Beidou 2nd generation/GPS dual-mode receiver, dual-channel running of a Beidou 2nd satellite and a GPS satellite is ensured, the stability of a signal source is ensured, the counting module selects a constant temperature crystal oscillator module, a Beidou 1pps random error mathematic model is built, and a Beidou 1pps random error is corrected online, so that a random error of Beidou second pulse signals can be effectively eliminated, and the time precision is improved. Meanwhile, the power supply module of the dual-mode time service machine utilizes a photovoltaic effect of solar cells, thereby achieving effects of energy conservation, stable power supply and convenient installation.

The invention comprises a steel cylinder, an air-filled composite valve, an integrated valve, a magnetic switch valve, a pressure-relief valve, a stop valve, a gas filter, a changeover switch, a gas common rail pipe, a jet magnetic valve, an absolute pressure transducer and a controller. Several jet magnetic valves and the absolute pressure transducer are mounted on the gas common rail pipe. The control lines of the stop valve, the magnetic switch valve, the integrated valve and the jet magnetic valve and the signal wire of the absolute pressure transducer are connected with the controller separately.

The invention relates to an arrangement of pulse-modulated quick-acting valves on a fluid storage device (28', 28''''), wherein the valves (24', 24'''') have different nominal widths for operation thereof in different pressure ranges with otherwise identical structure. The number of the valves (24', 24'''') and the respective nominal widths thereof is selected and matched to a fluctuation range of the pressure in the storage device (28', 28'''') such that over this fluctuation range of the storage device pressure, by complete opening, complete closing and/or switching individual valves or valve combinations, a total dispensed mass flow of the fluid from the storage device (28', 28'''') in a fluctuation range of varying mass flows of constant pressure as required can be produced.

The present invention provides a projection apparatus, comprising: a light source for emitting illumination light; at least one spatial light modulator with a plurality of movable mirrors corresponding to pixels to be displayed, for performing a modulation of the illumination light through operation of the movable mirrors; a light source control unit performing a modulation control of the light source; and a spatial light modulator control unit generating, from an input image signal, a control signal for driving the spatial light modulator, wherein: the light source control unit adjusts a pulse emission frequency of an emission pulse of the illumination light emitted from the light source while corresponding to an oscillation frequency of the movable mirrors.