62results about How to "Reduce loss" patented technology

Light outputs from many LEDs are uniformized and power consumption required for such uniformizing is suppressed, in an LED lighting circuit to be used for illuminating apparatus and the like. Currents flowing from a DD converter to an LED module are detected by a current detection resistor and compared with a reference voltage (Vref) from a reference voltage source by a comparison circuit. Corresponding to the comparison results, a control circuit controls the DD converter, and the currents flowing to the LED module are controlled to be constant currents at the same time. Furthermore, in LED load circuits configuring the LED module, control elements configuring a current mirror circuit are arranged in series, a corresponding control element is permitted to have a diode structure by having a circuit with the highest sum of the LED ON voltages as a reference, the flowing current values of the control elements of the remaining circuits are interlocked, and the LED load circuits are balanced.

The invention discloses a novel PCB base material cutting knife and a manufacturing method thereof. The cutting knife comprises a circular base body and a plurality of sawteeth on the peripheral edgeof the base body at intervals. A mounting hole is formed in the center of the base body. The base body comprises an inner ring mounting part and an outer ring mounting part. The thickness of the mounting parts is 3.2mm and the thickness of the mounting parts is greater than the thickness of a connecting part to form a step with the inner side thick and the outer side thin. The thickness of the sawteeth is equal to the thickness of the connecting part. According to the novel PCB base material cutting knife, under the condition of not changing the structure of an existing cutting device, wastagegenerated during cutting of a base material is reduced, and the production cost is lowered.

The invention discloses a gas water heater provided with a cold water inlet pipe and a hot water outlet pipe. The gas water heater comprises a shell, a catalysis combustor, a preheating combustor anda heat exchanger. A combustion chamber is formed in the shell. The catalysis combustor is arranged in the combustion chamber. The preheating combustor is arranged in the combustion chamber and is adjacent to the catalysis combustor. When the preheating combustor conducts combustion, the preheating combustor acts on the catalysis combustor, and the catalysis combustor is heated. One end of the heatexchanger communicates with the cold water inlet pipe, and the other end of the heat exchanger communicates with the hot water outlet pipe. The heat exchanger is used for absorbing heat generated dueto combustion of the preheating combustor and combustion of the catalysis combustor and conducting heat exchange on the absorbed heat and water in the heat exchanger. The gas water heater is simple and compact in structure, the energy utilization rate can be sufficiently improved, and harmful substance emission is reduced.

The invention discloses a snow lotus herb composition for improving immunity and an application of the snow lotus herb composition. Active components of the composition comprise the following components in parts by weight of 40-60 parts of a herba rhodiolae extract, 10-30 parts of a hippophae rhamnoides fruit extract and 20-50 parts of a snow lotus herb culture extract. The invention further discloses a preparation prepared from the composition, and a preparation method of the preparation. The invention further discloses the application of the composition to prepare drugs, health-care foods orfunctional foods for improving the immunity. Besides, the snow lotus herb culture extract in the composition disclosed by the invention is prepared by microwave negative pressure extraction and concentration. The herba rhodiolae extract, the hippophae rhamnoides fruit extract and the snow lotus herb culture extract are reasonably compounded, and the actions of the three components are complementary, so that the effects of benefiting qi, strengthening body resistance and tonifying the lung, the spleen and the kidney are achieved, and the composition has the function of improving immunity.

The invention provides a self-resetting shear wall hybrid structure, and belongs to the technical field of building structure self-resetting and earthquake resistance. According to the self-resettingshear wall hybrid structure, the problems that existing earthquake-resistant buildings are large in residual deformation under large earthquakes and difficult to repair are solved; and the self-resetting shear wall hybrid structure comprises a base, column bodies, a shear wall, prestressed tendons and wall corner components. According to the self-resetting shear wall hybrid structure, firstly, through arrangement of the wall corner components, the self-resetting shear wall hybrid structure has a certain self-resetting function, and thus the situation that the self-resetting shear wall hybrid structure deforms after the earthquakes is avoided, that is, the shear wall after the earthquakes is repaired; and secondly, all floor beams are hinged to the corresponding column bodies through hingeplates, thus the influences of a building frame on the column bodies are effectively reduced, that is, the influences of the building frame on the shear wall are effectively reduced, the loss of the self-resetting shear wall hybrid structure is also reduced, and meanwhile, the working stability of the self-resetting shear wall hybrid structure is also guaranteed.

To meet with the requirement for high-speed printing with continuous paper used as its recording medium and to better clean a transfer roller surface in high-speed production as well, an electrophotographic printer is provided comprising: a carrier liquid supply unit 11 disposed at a portion of the circumference of a transfer roller 2 between a position of image transfer onto a recording medium 7 and a transfer roller cleaning device 12 and including a carrier liquid supply roll 13 in rotational contact with a surface of the transfer roller 2 for supplying a carrier liquid onto the surface of the transfer roller 2, wherein the transfer roller cleaning device comprises: a cleaning roll 17 rotating in rubbing contact with the surface of the transfer roller and having a bias voltage applied thereto which is of a polarity opposite to that of a residual toner; a peripheral surface scraping blade 18 positioned downstream of the cleaning roll in the rotation direction of the transfer roller and in contact with a peripheral surface of the transfer roller; a side surface scraping blade 19 likewise positioned downward and in contact with a side surface of the transfer roller; and a surface scraping blade 26 disposed at a portion of the circumference of the cleaning roll and in contact with a surface of the cleaning roll.

The invention discloses a tunnel drainpipe heating cables laying vehicle employing Internet supervision, and the laying vehicle comprises an Internet supervision system, a vehicle body, a cable frame,a heating cable, a tensioning shaft, and a tensioning shaft support. The interior of the cable frame is provided with the heating cable, and the axis of the cable frame is provided with the tensioning shaft. The tensioning shaft is connected with the tensioning shaft support, and the tensioning shaft support is fixed on the vehicle body. The tensioning shaft comprises an adjustment screw rod, a tensioning shaft sleeve, tensioning blocks, an adjustment core, and an annular spring. The tensioning shaft sleeve is a hollow shaft, and the axis part is provided with the adjustment screw rod. The tensioning shaft sleeve is opposite to the adjustment core, and is provided with a plurality of rectangular through grooves, wherein the interior of each through groove is provided with one tensioning block. The adjustment screw rod comprises a shaft head, a threaded rod, and an optical rod. The vehicle employs an Internet supervision system for detection, and can be dispatched for remote operationonly when the conditions are met. During operation, only one end of the heating cable needs to be fixed at the entrance of a tunnel drainpipe, and a start motor drives the vehicle body to enter the drainpipe to complete the laying of the heating cable, so the operation is simple.

When supplying an LED light source with a first output voltage that is equal to or higher than a threshold voltage, an LED driver causes a DC power supply to output a first DC voltage and causes a switching regulator to supply the LED light source with the first output voltage. When supplying the LED light source with a second output voltage that is below the threshold voltage, the LED driver causes the DC power supply to output a second DC voltage lower than the first DC voltage and causes the dropper regulator to supply the LED light source with the second output voltage.

The invention provides a low-voltage battery charging control method and device. The method comprises the following steps: after the electric vehicle is stationary, a low-voltage battery management system detects the voltage of the low-voltage battery in real time; When the low-voltage battery management system detects that the voltage of the low-voltage battery is less than the preset charging start voltage, the vehicle control unit VCU is woken up so that the VCU wakes up the DC power supply to the DC power supply DC-DC device so that DC-DC device starts charging the low-voltage battery; Turn off the VCU wake-up when the low voltage battery management system detects that the voltage of the low voltage battery reaches the preset end-of-charge voltage. The low-voltage battery charging control method reduces the loss of the charging control module and avoids the overdischarge of the power battery.

The invention relates to a tunnel fireproof plate formula which is characterized in that the tunnel fireproof plate is prepared by mixing liquid slurry and a solid filling material with a weight percentage ratio of 20:80. In the solid filling material, diatomite, kaolin, volcanic ash, aluminum silicate, and wollastonite are adopted as main raw materials, and a modification additive and reinforcing fiber are adopted as auxiliary materials. The tunnel fireproof plate manufacturing process is simple. When the tunnel fireproof plate is manufactured, a refractory limit reaches 3h (RABT-hydrocarbon compounding heating curve), and a flexural strength (20mm plate material) is higher than 13MPa. Compared with same-type products internationally, the strength of the plate provided by the invention is higher by 3-4 times. Also, during a mounting construction process, loss is greatly reduced.

A fluorocarboxylic acid preparation process continuously carries out acidification reaction treatment and washing treatment, and includes subjecting a fluorocarboxylate-containing aqueous solution to acidification reaction treatment in the presence of sulfuric acid so as to form a sulfate-containing fluorocarboxylic acid phase; and subjecting the fluorocarboxylic acid phase to washing treatment using an aqueous sulfuric acid solution.