135results 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.

An audible anti-theft tag that has a multiple ways to activate an audible alarm under predetermined conditions. When the pin assembly is forcibly detached from an EAS tag, a high decibel alarm is automatically activated. The audible alarm in the anti-theft tag uses a thyristor control circuit which does not use power while the anti-theft tag alarm is inactive. Once activated, the alarm cannot be turned off. An optional multi-wire lanyard is available which is not susceptible to defeat by a shunt, and also activates the audible alarm when severed.

The present invention includes a power amplifying stage having a power amplifying element having a main electrode and a control electrode, and a bias control circuit that is supplied with a bias switching voltage and an operating point adjusting voltage for adjusting the bias voltage value to the control electrode of the power amplifying element by the bias switching voltage and the operating point adjusting voltage and hence adjusting the operating point of the power amplifying element, wherein the bias control circuit adjusts the operating point of the power amplifying element by switching between supply and stop of the bias voltage to the control electrode of the power amplifying element by the bias switching voltage, and varying the bias voltage value to be supplied to the control electrode of the power amplifying element by the operating point adjusting voltage in phase.

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.

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 method for receiving system information by a User Equipment (UE) in a wireless communication system is provided. In the method, the UE receives a message including information associated with allocation of a downlink resource from a base station and receives a message including changed system information through the allocated downlink resource according to the received information associated with allocation of the downlink resource.

The invention discloses a multi-channel remote keyless entry (RKE) transponder having dynamically reconfigurable input channel selection, channel disable, settable sensitivity for each channel, wake-up filter timing parameters, automatic gain control hold, internal tuning capacitor selection for each channel's antenna, minimum modulation depth requirement for input signal and bi-directional talk-back. Programmable minimum modulation depth requirement reduces false wake-up of the RKE transponder. An antenna for each channel of the RKE transponder may be tuned with internal tuning capacitors for improved range and receiver sensitivity. The internal tuning capacitor parameters may be stored in a configuration register. Gain of the channel may be fixed while the antenna is tuned. The antennas may be de-queued for talk-back to a base station for low frequency bidirectional communications. An external control device may dynamically read from and write to the configuration registers via a serial communications interface.

Methods, devices and system for access point facilitated fast handoff are provided. Each access point (AP) in a wireless local area network is provided with a primary interface and a secondary interface wherein the primary interface performs normal communication with user terminals and broadcasts standard beacon frames on its working channel, and the secondary interface broadcasts extended beacon frames on working channels of neighbor APs sequentially. The extended beacon frame includes at least information of BSSID, SSID, working channel and the like of the primary interface of the corresponding AP. The user terminal may receive the standard beacons from the serving AP it is communicating with and the extended beacons from the neighbor APs, and according to the two kinds of beacons, the terminal may calculate the signal quality with the primary interface of the serving AP and the signal qualities with the neighbor APs at the current position. By an algorithm of comparing the signal qualities of the best neighbor AP and the serving AP, the terminal may accurately and quickly determine whether to perform handoff with minimized cost.

The invention discloses a control system of a low power consumption read / write register. The control system comprises a bus interface, a plurality of register modules and a clock generator, wherein, the clock generator comprises clock gate control units that respectively generate clock signals with the frequency lower than that of a bus clock, the clock signals are output to the corresponding register modules to act as a visit clock of the register; the bus interface comprises a read / write data synchronous unit of the register modules which can respectively realize data reading and writing to different register modules of the bus interface. As the invention improves the clock signal generation method involving the read / write part of the register in the control system, leads the working clocks of different register modules to be mutual-independent, and carries out dynamic gate control according to respective work or idle status, and modifies the position of the gate control unit, therefore, the power consumption of the system is greatly reduced.

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 starting device and starting method for a single-phase induction motor, housing: a stator having a running coil and a starting coil; a running switch and a starting switch which is conducted to an open condition upon completion of the motor start. The starting device includes: a starting circuit including a control unit which receives, from a current sensor, signals representative of the current level being supplied to the stator, the control unit being connected to the running and the starting switches, for instruction the open and closed conditions thereof; the open condition of the starting switch being defined when the ratio between the present current level supplied to the stator and the starting current level, upon the closing of the starting and the running switches, reaches a predetermined value.

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.

An integrated circuit with a scan testing circuit which enables reducing power consumption in normal operation mode is provided. A power-supply controller applies a power-supply voltage to internal and external transmission circuits in scan test mode and stops applying the power supply voltage in normal operation mode. Thus, power consumption associated with operations of the internal and external transmission circuits is eliminated, thereby reducing power consumption in normal operation mode.

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 solar powered compressor and pump is disclosed having a trough-shaped parabolic reflector for heating a conduit of refrigerant as it passes through the system. The compressor / pump combination includes a lens that covers the reflector and insulates and protects the reflector from the elements while increasing the intensity of the sun's energy entering the reflector. The reflector converts the sun's energy into heat that superheats the refrigerant as it passes through the reflector, reducing or eliminating the amount of mechanical work that the system has to do to achieve the needed superheating stage.

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 TS1, TS2, TS3 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 audible anti-theft tag that has a multiple ways to activate an audible alarm under predetermined conditions. When the pin assembly is forcibly detached from an EAS tag, a high decibel alarm is automatically activated. The audible alarm in the anti-theft tag uses a thyristor control circuit which does not use power while the anti-theft tag alarm is inactive. Once activated, the alarm cannot be turned off. An optional multi-wire lanyard is available which is not susceptible to defeat by a shunt, and also activates the audible alarm when severed.

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.

A capacitor discharging circuit and a power converter having the capacitor discharging circuit are disclosed. The capacitor discharging circuit comprises a conversion module connected with the two terminals of the capacitor, an AC power-off detecting unit used to detect on-off state of AC power, and a control unit. The conversion module comprises an energy consumption unit. When AC power is disconnected, the AC power-off signal generated by the AC power-off detecting unit intervenes the control unit to control the energy consumption unit to consume the energy stored in the capacitor.

The invention discloses an off-state power supply circuit for a two-wire system electronic switch. The off-state power supply circuit comprises a separate excitation switching power supply and a self-closing type starting circuit, wherein the separate excitation switching power supply comprises a transformer T2, a first switching tube, a switching tube control circuit controlling the first switching tube, and an output voltage detection circuit detecting the output voltage of the transformer T2; the transformer T2 comprises a primary winding and a secondary winding; the self-closing type starting circuit comprises a second switching tube and a voltage stabilizer tube Z1. The off-state power supply circuit is simple and reasonable in design, good in using effect, and stable in working performance. The invention further discloses an intelligent switch. The intelligent switch comprises a mechanical switch, a remote controller and a remote control module, wherein the remote control module comprises an electronic switch, an on-off state detection circuit, an on-off control circuit, a wireless communication module, the off-state power supply circuit of the two-wire system electronic switch and an on-state power supply circuit; the intelligent switch is additionally provided with the remote control function while retaining the operation manner of the mechanical switch.

A starting device and starting method for a single-phase induction motor, comprising: a stator (B) having a running coil (B1) and a starting coil (B2); a running switch (S1) and a starting switch (S2) which is conducted to an open condition upon completion of the motor start. The starting device comprises: a starting circuit (10) including a control unit (11) which receives, from a current sensor (RS), signals representative of the current level being supplied to the stator (B), said control unit (11) being connected to the running and the starting switches (S1 and S2), for instructing the open and closed conditions thereof, the open condition of the starting switch (S2) being defined when the ratio (K) between the present current level (Ia) supplied to the stator (B) and the starting current level (Ip), upon the closing of the starting and the running switches (S1 and S2), reaches a predetermined value (Km).