37results about How to "Improve power usage efficiency" patented technology

Provided is a low power consuming mixed mode amplifier. The power amplifier includes: a low output amplifier circuit generating a power amplified result having high efficiency in a low output mode the most frequently used; a high output amplifier circuit generating an amplified result of high linearity in a high output mode of a region consuming the most power; an amplifier controller selectively activating the low and high output amplifier circuits according to a power level of an input signal. The high and low output amplifier circuits have a predetermined gain difference.

A heater controller of baker has two or more heaters for supplying hot air to drum, a power fixing switch element connected to one of heater to make the heater output fixed power, a power variable switch element connected to another heater for making the heater output adjustable power, and the control element for said two switch elements. The three-terminal bidirectional SCR switch is used to control the 50% of heater power, so simplifying the structure of radiator and lowering cost.

A control system for a vehicle includes: a motor-generator to regenerate an electric power; a secondary battery to be charged with the electric power regenerated by the motor-generator; an electrical load to be activated with an electric power supplied from at least one of the motor-generator and the secondary battery; a power supply device to supply the electrical load with the electric power generated by the motor-generator based on a deceleration power generated by a braking operation of the vehicle; and an electronic control unit to calculate excess power which is electric power exceeding chargeable power with which the secondary battery is chargeable of a required deceleration power required by the braking operation, and to control the power supply device in accordance with a command value for causing the electric power supplied from the power supply device to the electrical load to be less than the excess power.

An infrared transmitter is provided with a transmission signal generating means for transmitting a signal by changing luminance of an LED which emits infrared rays, a biasing voltage generating means for generating a biasing voltage corresponding to the size of the transmission signal, a signal / voltage mixing means for mixing the transmission signal and the biasing voltage, and a voltage-current conversion means for converting the voltage into a current. The infrared transmitter drives the LED by the current generated by the voltage-current conversion means and improves power use efficiency.

The invention provides a gear shifting control method and device for a gear box of a loading machine, an electric control system and the loading machine, and relates to the field of engineering machines. The gear shifting control method for the gear box of the loading machine comprises the steps of obtaining an automatic gear shifting signal enabling the loading machine to be automatically switched into a requested gear from a current gear; according to the current gear and the current speed of the loading machine, obtaining the turbine rotating speed of the loading machine; according to the rotating speed of an engine and the turbine rotating speed, obtaining the speed ratio of a torque converter, comparing the speed ratio of the torque converter with a first numerical value interval, and if the speed ratio of the torque converter is higher than the first numerical value interval, carrying out one-gear-down compensation on the requested gear; and if the speed ratio of the torque converter is lower than the first numerical value interval, carrying out one-gear-up compensation on the requested gear. According to the gear shifting control method for the gear box of the loading machine, the gear shifting compensation control is added, and the loading machine works in an efficient zone of the torque converter to the greatest extent; and the power using efficiency is improved and fuel economy is improved while the power performance is ensured.

The invention discloses a Bluetooth charging device and a charging control method. The Bluetooth charging device comprises a body, an interface unit and a battery unit, wherein the interface unit is formed in the outer surface of the body and used for being connected with a Bluetooth device, and the battery unit is fixed inside the body. The battery unit is connected with the interface unit. A control unit and a sleep unit are further fixed in the body and connected with the interface unit. The battery unit is connected with both the control unit and the sleep unit. The control unit compares the detected electric quantity of the Bluetooth device and a preset electric quantity threshold value, and controls the battery unit to charge the Bluetooth device or controls the sleep unit to switch the Bluetooth device to a sleep mode. The Bluetooth charging device can charge the Bluetooth device, and can further convert the mode of charged Bluetooth device into the sleep mode to lower power consumption.

The invention relates to an aging battery reuse method and system, wherein the method includes the steps: configuring or using a plurality of batteries in a first electrical device, and configuring or using the batteries to a battery life time; when at least one aging battery is formed in the batteries, demounting the aging battery from the first electrical device; then configuring and using the aging battery of the first electrical device in a second electrical device; and providing a residual life reuse service of the aging battery by using the second electrical device, or providing a residual life dealing service of the aging battery by using the second electrical device. The consumption cost of using high-premium-rate electrical power can be reduced or the use efficiency of off-peak time electrical power can be improved, and the service life of the aging battery is improved.

The invention provides a device and a method for dynamic regulation of core voltage of an embedded processor. The device comprises a business statistical analysis module, a core voltage selection module, an input and output control module and a core voltage adjuster. The business statistical analysis module, the core voltage selection module and the input and output control module are positioned in the embedded processor and are connected in sequence, the input and output control module is connected with the core voltage adjuster. The method includes the following steps: acquiring and counting current business data of the embedded processor for determining load data; determining a core voltage value according to the load data; determining an input and output control signal according to the core voltage value; changing a feedback divider resistance combination of the core voltage adjuster by the input and output control signal, and then changing the size of the output voltage of the core voltage adjuster; and providing the output voltage to the embedded processor by the core voltage adjuster. By the aid of the device and the method for dynamic regulation of the core voltage of the embedded processor, the real-time and dynamic adjustment of the core voltage of the embedded processor is achieved, and use efficiency of power consumption of the embedded processor is effectively improved.

The invention provides a machine cabinet power supply system which comprises at least one alternating-current / direct-current conversion module, a power bus, a plurality of direct-current / direct-current conversion modules and a plurality of servers. The alternating-current / direct-current conversion module is used for converting an input alternating current into a direct current with a first voltage. The power bus is connected with the at least one alternating-current / direct-current conversion module and used for collecting, distributing and transmitting the direct current with the first voltage. The direct-current / direct-current conversion modules are connected with the power bus and used for converting the direct current with the first voltage from the power bus into a direct current with a second voltage, wherein the first voltage is larger than the second voltage. Each direct-current / direct-current conversion module supplies power to one server. According to the machine cabinet power supply system, the transmission current and the sectional area of the power bus is reduced, the loss is reduced, the power use efficiency is improved, and heat dissipation of the machine cabinet is facilitated.

The present invention relates to the wireless communication technology field, especially relates to a net method of TD-SCDMA (time-division synchronous code division multiple access) system multi frequency point district. The system includes a network and a terminal, the network includes a plurality of multi frequency point districts. A service channel of the district is built in a main frequency point and / or an assist frequency point, and adjacent multi frequency point districts select different carrier waves as the main frequency point. A downlink emission power of the main frequency of any multi frequency point district is set always not smaller than the downlink emission power of any assist frequency in the multi frequency point district. The inventive method can reduce effectively mutual interference at district peripheral dedicated channel between districts, at the same time has a strong service sustaining power for large power demand, and has wide downlink cover.