133results about How to "Eliminate power consumption" patented technology

A method for fabricating light emitting diode (LEDs) comprises providing a plurality of LEDs on a substrate wafer, each of which has an n-type and p-type layer of Group-III nitride material formed on a SiC substrate with the n-type layer sandwiched between the substrate and p-type layer. A conductive carrier is provided having a lateral surface to hold the LEDs. The LEDs are flip-chip mounted on the lateral surface of the conductive carrier. The SiC substrate is removed from the LEDs such that the n-type layer is the top-most layer. A respective contact is deposited on the n-type layer of each of the LEDs and the carrier is separated into portions such that each of the LEDs is separated from the others, with each of the LEDs mounted to a respective portion of said carrier.

A closed-loop controlled antenna tuning unit (ATU) system includes a return loss detector connected to sample an RF signal generated by a signal source to provide a return loss signal. A matching state searching circuit is connected to receive the return loss signal and, in response, selectively store a return loss value and an impedance matching state. A central controller is connected to provide a switch control signal and apply an optimum matching state to the impedance synthesizer at the conclusion of the matching state search. An impedance synthesizer is responsive to the switch control signal for coupling a radio frequency signal and matching the impedance of an antenna to a signal source.

The present invention relates to a hydraulic-transmission- braking three-use lubricating oil composition, which is prepared by mixing the following raw materials, by weight, 85-98% of high viscosity index base oil, 0.1-5% of an extreme pressure wear resistance agent, 0.1-4% of an antioxidant, 0.1-3% of a metal deactivator/antirust agent, 0.1-5% of a friction modifier, and 0.1-2% of a dispersing agent. The hydraulic-transmission- braking three-use lubricating oil composition has beneficial effects of good low temperature fluidity, friction reduction, wear resistance, corrosion resistance, rust resistance, emulsification resistance and foaming resistance, and can meet requirements of universal hydraulic transmission oil used by large-medium-sized tractors and construction machinery so as to achieve complete lubricating protection on hydraulic parts, transmission parts, gear parts, power output parts and braking parts, such that a long service life is provided, equipment operation stability is easily improved, and energy saving and consumption reduction are provided.

A digital based two wire proximity transmitter system and a method for calibrating the system, wherein the transmitter includes a customized linearization table uniquely generated during calibration to take into account the unique impedance properties of a particular probe/coaxial cable configuration. During calibration, the probe is positioned adjacent a calibration target. The calibration target is selected to have the same material characteristics as the target to be monitored during actual operation of the transmitter in the field. At a fixed distance between the probe and calibration target, the resonant frequency of the probe/cable system is determined. Thereafter, utilizing this resonant frequency to excite the probe, the voltage response of the probe/cable system is determined as the distance between the probe and the target material is incrementally changed. The voltage output is used to build a table for incremental distances, wherein each distance is characterized by a non-linear output that has been equated to a linear output. This uniquely generated table is subsequently downloaded into the transmitter for reference during monitoring.

The invention discloses a background suppression method for an infrared reading circuit and a circuit thereof. The circuit is provided with a negative charge packet generator, a detector, an injection circuit, a sampling hold circuit and a buffer, wherein an output end of the negative charge packet generator is connected with one input end of the injection circuit; and an output end of the detector is connected with the other input end of the injection circuit, an output end of the injection circuit is connected with an input end of the sampling hold circuit, an output end of the sampling hold circuit is connected with an input end of the buffer, and an output end of the buffer is connected with a subsequent signal processing circuit. The method and the circuit adopt the negative charge packet generator to provide a plurality of negative charge packets by stage to reduce charges of background current accumulated on an integrating capacitor, do not need a background current memory of the prior art to generate background reduction current to realize background suppression, have extremely low background suppression non-uniformity, and do not introduce extra noise and power consumption.

The invention discloses a direct-current offset cancelling circuit applied to a low-frequency variable gain amplifier, wherein the variable gain amplifier comprises an input differential pair, a current buffer and a common-source output stage; the direct-current offset cancelling circuit comprises a transconductance amplifier and a peaking current source for offsetting; the input of the transconductance amplifier is connected to the output end of the variable gain amplifier, and the transconductance amplifier is used for converting output direct-current offset voltage into current; and the output of the transconductance amplifier is connected to an output current additive node of a front-stage differential pair of the variable gain amplifier so as to constitute a negative feedback loop. The direct-current offset in a signal channel is corrected in real time by adopting the feedback loop of the transconductance amplifier and a peaking current source offset technology, rapid convergence can be realized in the process of initiating and switching gains, and the initial state of the variable gain amplifier is not limited. When the current additive node of the input signal channel accesses the feedback output of the transconductance amplifier, a peaking current source is used for offsetting the input stage of the transconductance amplifier.

A method of transmitting control information by a base station in a wireless communication system is provided. In the method, control information is broadcast, and negative-acknowledgement (NACK) information associated with the broadcasted control information is received from at least one User Equipment (UE), and then the control information is retransmitted to at least one UE in response to the NACK information.

A differential detection receiver with a reduced power consumption is provided by simplifying constituent circuits of the differential detection receiver. An arctangent calculator is realized without using a multiplier of a conversion table. Without using a D/A converter, a level adjusting circuit for adjusting the absolute value of a vector (Ax, Ay) given as input signals Ax and Ay so as to make it one. The power consumption of a differential detection demodulator is reduced by eliminating power consuming circuits such as a multiplier and a large conversion table from the system.

A portable device for smart entry for locking and unlocking a door includes an electronic circuit, battery, and a controller. The electronic circuit is configured to perform wireless communication for locking and unlocking the door. The battery is configured to supply electric power to the electronic circuit. The controller configured to control the wireless communication. The controller is configured to shut off conduction of electric current between the battery and the electronic circuit when the controller determines that a remaining capacity of the battery is equal to or lower than a reference value. The controller is configured to resume conduction of electric current between the battery and the electronic circuit when a particular operation on the portable device is detected after the conduction is shut off.

A battery pack may include at least one battery cell, a switch having an ON resistance dependent on a temperature of the switch, a thermistor having a resistance varying with changes in the temperature, and battery state monitoring circuitry. The battery state monitoring circuitry may be configured to monitor a voltage drop across the switch caused by a current flowing through the switch and the resistance of the thermistor to correlate the voltage drop to the current level. A cordless electrical device including the battery pack, and an associated method are also provided.

The invention relates to a high pressure pulse modulator and a modulation method thereof for steep falling edge and low power consumption plasma immersion ion implantation, which belongs to the technical field of pulse power and solves the problem of long falling edge of the output pulse of the traditional high pressure pulse modulator for plasma immersion ion implantation. A high pressure pulse is modulated by using a vacuum electron tube as a main switch, a charging process of a high pressure impulse capacitor is controlled by using a charging IGBT (Insulated Gate Bipolar Translator) series switch, and the power consumption on a charging current-limiting resistor is eliminated. When the high pressure pulse is cut off, the drop-down IGBT series switch is switched on, charges remained in a load capacitor and a parasitic capacitor can quickly flow through a discharging current-limiting device and the drop-down IGBT series switch to be released so that the falling edge of the output high pressure pulse is greatly reduced. The invention is used for accurately controlling the high pressure pulse in a plasma immersion ion implantation process.

The invention relates to a heat supply system for directly recovering sewage multi-section flashing steam waste heat by using multiple sections of absorption heat pumps, which is used for recovering sewage flashing steam waste heat. The system comprises 1, 2, ..., and N independent sealing chambers and the multiple sections of absorption heat pumps, wherein the multiple sections of absorption heat pumps comprise respective 1, 2, ..., and N generators, 1, 2, ..., and N condensers, 1, 2, ..., and N absorbers and 1, 2, ..., and N evaporators; water steam which is formed by flashing sewage in the 1, 2, ..., and N independent sealing chambers and has different pressure from high pressure to low pressure enters 1, 2, ..., and N evaporator tubes sequentially by 1, 2, ..., and N flashing steam and is directly connected with the 1, 2, ..., and N evaporators of the multiple sections of absorption heat pumps; and flashing steam condensate outflows the 1, 2, ..., and N evaporator tubes and reflows to respective 1, 2, ..., and N liquid phase areas of the 1, 2, ..., and N independent sealing chambers sequentially by respective 1, 2, ..., and N flashing steam condensate. The system can reduce heat loss, improve the water-supply temperature of hot water and reduce investment and running cost.

In a solid-state imaging device, power consumption is reduced in an output section of a charge transfer device. Control transistors T_S1, T_S2, T_S3 are provided in a source follower amplification circuit constituting an output amplifier of a CCD image sensor. The control transistor is switched on and off by switching a gate voltage in accordance with the operation state of the charge transfer device. When the imaging device is in a standby mode, the control transistor is turned off to suspend operation of the source follower amplification circuit.

A micro-electromechanical system (MEMS) frequency divider apparatus having one or more MEMS resonators on a substrate is presented. A first oscillator frequency, as an approximate multiple of the parametric oscillation frequency, is capacitively coupled from a very closely-spaced electrode (e.g., 40 nm) to a resonant structure of the first oscillator, thus inducing mechanical oscillation. This mechanical oscillation can be coupled through additional MEMS resonators on the substrate. The mechanical resonance is then converted, in at least one of the MEMS resonators, by capacitive coupling back to an electrical signal which is a division of the first oscillation frequency. Output may be generated as a single ended output, or in response to a differential signal between two output electrodes.

An apparatus, system and method are disclosed for eliminating the power consumption of external electrical power adapters plugged into sources of power but detached from electrical devices they are intended to serve. The apparatus comprises a power-accessing plug, a power supply circuit, a first connector, and a second connector. The power-accessing plug is electrically connected to an external source of electrical power. The power supply circuit comprises circuitry to convert the external electrical source power into an electrical form useful for consumption by an electrical device. The first connector comprises a switch and is electrically connected to the plug and the power supply circuit. The switch (1) has an open position when the apparatus is not electrically and physically attached to an electrically powered device and (2) has a closed position when the apparatus is electrically and physically attached to the electrical device whereby current is able to flow through the apparatus. When the switch is in the open position, the open switch is able to prevent the consumption of any electrical power by the power adapter when the plug is electrically connected to the source of electrical power. The second connector comprises a first end electrically attached to the power supply circuit and a second end removeably electrically attached to the electrically powered device.