120results about How to "Simple power supply" patented technology

A cordless power tool system is provided which is driven by using a battery pack as a power source, and which has work performance equivalent to an AC power tool is driven by using a commercial power source as a power source. The cordless power tool system is configured to include: a battery pack in which DC voltage of battery modules is converted into AC voltage, to thereby output the AC voltage having a level which is comparable to that of the commercial power source; a cordless power tool which is driven by using the battery pack as a power source; an electrical cord adapter which allows power supply from the commercial power source to the battery pack for charging the battery pack; and an electrical cord adapter which allows power supply from the commercial power source to the cordless power tool for driving the cordless power tool.

A multiphase inverter has two card shaped arm modules facing each other along a stacking direction. Each module has semiconductor switching elements disposed along an element arranging direction substantially perpendicular to the stacking direction, a common heat sink plate connecting direct current electrodes of the elements with one of terminals of the power source, and phase heat sink plates connecting respective alternating current electrodes of the elements with respective multiphase terminals of a motor. The elements of each module correspond to all phases of an alternating current. Each common heat sink plate forms a principal surface of the corresponding module, and the phase heat sink plates of each module forms another principal surface. The principal surfaces of each module face each other along the stacking direction.

A display assembly in which multiple display panels for showing different images such as digital photos or moving images can be removably attached to a mounting board in different angles and configuration. The mounting board supplies power to the display panels, easing the logistic handling of cables to the display panels.

There is provided a light emission control circuit being capable of simplifying a power source circuit reducing costs and power consumption. A constant current circuit is serially connected to a specified light emitting device group out of a plurality of light emitting device groups and a power source circuit supplies power to each light emitting device group and a current detecting unit detects a current flowing through a specified light emitting device group and a power control unit controls a power source circuit based on a pre-set current value and on a detected value.

An error voltage Verr, as amplified by an amplifier, and an input voltage Vin, are multiplied together by a multiplier to generate a first threshold value signal Vth1, which is in phase with and similar in waveform to the input voltage Vin, and proportional in amplitude to the error voltage Verr. A second threshold value signal Vth2 is generated from the first threshold value signal Vth1 by a series circuit of a diode and a resistor. The power factor is increased by on/off-control of a switching element via a drive circuit, so that a current detection signal Vi, which is detected by a resistor and corresponds to an input current, falls between the two threshold value signals Vth1 and Vth2. Since the off time is not fixed, the noise spectrum is spread and increase of the switching frequency is suppressed. Noise reduction thus can be attained.

The invention discloses a multi-ground-clearance self-steering intelligent sprayer and a control method. The sprayer comprises a vehicle platform, two self-steering traveling mechanisms, a controllable lifting spraying device, a gasoline power generation and supply device and a control device, and each self-steering traveling mechanism is connected with the vehicle platform by adopting a rotation structure; the controllable lifting spraying device is fixed at the tail of the vehicle platform and comprises a sprayer lifting mechanism, a spraying rod device and a drug mixing device, the spraying rod device is arranged on the sprayer lifting mechanism and connected with the drug mixing device, and a spraying rod can move up and down along with traction of the sprayer lifting mechanism; the drug mixing device is fixed in the middle of the vehicle platform and provides drug to spraying equipment for spraying, the gasoline power generation and supply device is fixed on the front portion of the vehicle platform and serves as a stable voltage power source of the equipment, and the control device is connected with driving equipment, a control motor and multiple sensors. Four hub motors are controlled by the control device to realize self-steering of wheels at differential speeds, and the sprayer is high in control accuracy and small in turning radius.

The invention discloses a test device and test method for C interface signals of a lineside electronic unit (LEU). The test device comprises a relay control module, a C1 signal processing module, a C6 signal processing module, a signal detection module and a serial communication interface (SCI) communication module, wherein the relay control module is used for adjusting load resistance input by the C interface signals; the C1 signal processing module is used for collecting C1 signals in the C interface signals which pass through the relay control module and processing the C1 signals; the C6 signal processing module is used for collecting C6 signals in the C interface signals which pass through the relay control module and processing the C6 signals; the signal detection module is used for detecting parameters of the C1 signals and parameters of the C6 signals and extracting message information and the error rate; and the SCI communication module is used for achieving communication between the C interface signal test device and an upper computer. Precision meters do not need to be prepared independently when the test device is utilized to test the C interface signals, and the C interface signals can be measured conveniently and rapidly; due to the fact that the test device is small in size and convenient to carry and power supply is simple, outdoor and trackside operation is facilitated, and the test device further has the advantages of being simple and convenient to operate and low in power consumption and cost and the like.

A light-emitting device of the present invention comprises a plurality of light emitting elements, a lead frame on which the light emitting elements are mounted and which supplies electric power to the light emitting elements, and a mold part which not only forms a plurality of light emitting parts from which the light emitting elements are exposed, but also covers the lead frame. In addition, a part of the lead frame is exposed from the mold part as a terminal for supplying power which a harness is connected, and, a portion which corresponds to the terminal for supplying power in the lead frame becomes thicker than other portions.

The invention provides a gate valve device, which is provided with a heater on a valve core for opening and closing an opening part and can easily supply the power for the heater. The gate valve device (10) comprises a valve core (12) for opening and closing a opening part (112) arranged on a wall for spacing two adjacent spaces, a valve core moving device (20) for moving the valve core (12), a heater (13) for heating the valve core (12), and a connector electrically connected with the heater (13), and electrically connected and physically connected with a power output part for outputting the power for the heater (13). The valve core (12), the heater (13) and the connector are integrated, the connector is linked with the valve core (12) in the following mode: in the state that the valve core (12) closes the opening part (112), the connector is electrically connected and physically connected with the power output part, in the state that the valve core (12) opens the opening part (112), the connector is electrically separated and physically separated from the power output part.

The invention discloses a low-power-consumption dormancy activation communication power saving method for electric transmission lines, which is characterized in that: based on the operation of equipment, the operating state of the equipment is divided according to the power consumption arising from the activity of a communication module; the operation of equipment is divided into six operating states, namely a deep dormancy state, a dormancy state, a hazy state, an awakening state, an excited state and an extremely excited state; after the equipment is awakened, the excited state or the extremely excited state also can be selected according to the data volume; and the implementation of a whole dormancy activation mechanism needs the assistance of a master control module, the communication module and a power management module. According to the invention, a complete set of dormancy activation mechanism is established in accordance with the requirements for the communication capability, therefore, through carrying out subdivided application on communication resources, the reduction of power consumption of the whole system is realized, and the power-saving and energy-saving problems of intelligent equipment with a communication function in an electric transmission line under special environments can be solved; and when no communication requirement exists, the communication resources are closed, so that a lot of power consumption is saved, the low-power-consumption requirements of the equipment are satisfied, the power supply of the equipment is simplified, and the modification and cooperation of a bottom layer of a communication protocol are not required.

The invention discloses a self-steering mechanism about the multiple land gaps in the field, which comprises the mobile platform, the self-steering walking mechanism and the control device.The self-steering walking mechanism is composed of two bases with the slewing mechanism and four tires with the in-wheel motor.The slewing mechanism is rotated by the bearing arranged in the mobile platform, the shore at the bottom of the bearing and the shock absorber.Or the slewing mechanism is rotated by the bearing arranged in the mobile platform, the base platform at the bottom of the bearing and the vehicle and bridge.The self-steering mechanism about the multiple land gap in the field utilizes the control device to control the four in-wheel motors to realize the self-steering of the wheel differential with the high control accuracy and the short turning radius.

The invention discloses ion beam surface treatment equipment and an ion beam surface treatment method for suppressing secondary electron emission, which belong to the field of vacuum electronic technology. The equipment comprises a mechanical pump in a forvacuum state, a secondary vacuum molecular pump and a sample table component, wherein a sputtering deposition component and an ion source are arranged above the sample table component. The method used by the equipment comprises the following steps of: vacuumizing a system; heating a sample; filling an argon gas; performing ion source sputtering; cooling the sample; and detecting a coefficient value of the secondary electron emission by using a special instrument. The equipment and the method effectively suppress the secondary electron emission; and a molybdenum target used in the equipment is simple to machine and low in cost.

A power supply protection circuit for stopping a power supply to electrical equipments in case a normal power voltage is not outputted from a direct current power supply and an excess voltage or a reduced voltage is outputted. The power supply protection circuit according to the present invention is constituted of a power source line for supplying a direct current power, via relay contacts of a relay, to an electrical equipment, a first circuit for detecting an excess voltage and a reduced voltage, a second circuit, and a relay operation circuit.

An RF converter circuit 11 that constitutes a video signal superposing/power deriving unit 100 converts video signals generated from images taken by a surveillance camera 10, which derives a direct current voltage as a driving power from an antenna lead-in wire 6 through a filter circuit (LPF circuit 12), to radio-frequency signals. The radio-frequency signals are transmitted through the antenna lead-in wire 6 to a television receiver 2. Images taken by the surveillance camera 1 can be viewed on the television receiver 2 only by selecting the channel assigned to the surveillance camera 1. Accordingly, the driving power for the surveillance camera 1 is not relied upon a solar battery or secondary batteries, and wiring work therefor may be simplified.

The invention provides a power supply apparatus and a crane system. The power supply apparatus is provided with: at least one power collector which supplies electric power to a rechargeable battery equipped on a self-traveling crane; and a position adjusting section which is provided between a crane main body of the self-traveling crane and the power collector, and which adjusts a position in a widthwise direction orthogonal to a traveling direction of the self-traveling crane, of the power collector with respect to the self-traveling crane. The power collector comes in contact, through an opening formed in an insulation cover which covers the power supply section, with a power supply section which is provided on a side section on a traveling pathway of the self-traveling crane, and supplies electric power to the self-traveling crane. The opening is formed in a region including a bottom section of the insulation cover facing a pathway surface where the self-traveling crane travels, and opposite end sections of the insulation cover in the traveling direction of the self-traveling crane.

The invention relates to a distributed optical fiber temperature measuring system which comprises a wavelength division multiplexing (WDM) optical device and an APD multistage amplifying module. A measured optical cable is connected with the WDM optical device, the output end of a pulse light source is connected with the WDM device, and the APD multistage amplifying module is used for receiving optical signals transmitted by the WDM optical device and outputting simulation signals to a multi-channel collection board card in a segmentation mode. The multi-channel collection board card is connected with a software platform, and the software platform is used for receiving the simulation signals transmitted by the multi-channel collection board card, conducting segmentation processing on the signals and combining the signals into a whole channel. The distributed optical fiber temperature measuring system with the structure effectively extends optical fiber measuring distance of a single channel, the device number is reduced, problems of signal transmission, device power supply, device maintenance and the like caused by device cascade connection required by long-distance transmission measurement are solved, product measuring distance is increased, temperature measuring cost is reduced, temperature measuring accuracy is improved, the signal to noise ratio of measuring signals of each segment is kept at a high level, and the temperature measuring accuracy is improved.

The invention provides a line illumination device with a compact structure containing a light source and a light-guiding body inside a frame as well as a simple power supply structure of the light source, and an image input device using the line illumination device. The rod-shaped light-guiding body (1) is contained inside the frame (6), and the light source (3) emitting light into the light-guiding body (1) is arranged at the end part of the light-guiding body (1) so that a flexible substrate (4) loading the light source (3) is bent and contained inside the frame (6); wiring installed on the flexible substrate (4) supplies power for the light source (3) so as to emit out line-shaped light from the light-guiding body (1).