121results 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.

To provide a power storage device for regularly supplying power to a mobile electronic device, in which charging of a battery by a power feeder can be simplified and even when power stored in the battery is not enough, power can be regularly supplied to the mobile electronic device. The mobile electronic device includes an antenna circuit which receives power supply via radio signals, a battery which stores power, and a power supply control circuit which includes a switch circuit for intermittently supplying power to a load. Power supply to the load is intermittently controlled by controlling the switch circuit, which is provided in the power supply control circuit for controlling the supply of power stored in the battery, using a signal from a low-frequency-signal generating circuit.

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.

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.

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.

A linear motor system includes a discontinuous linear motor and motor control device. The discontinuous linear motor includes a mover and a plurality of individual motors spaced from each other along a movement path of the mover. Each of the individual motors functions as an armature on a primary side of one independent linear motor. A sensor, arranged to act as a linear scale, is disposed for each individual motor and detects a position of the mover. The motor control device includes a plurality of individual motor control units and a multiple unit controller to comprehensively control the individual motor control units. The individual motor control units control the individual motors disposed in curved path sections, and each of the individual motor control units includes a curved-line correspondence corrector to correct a detection value obtained from the sensor according to a relationship between a curved line of the path and a position of the sensor.

The invention discloses a spray boom assembly and a lifting spraying device comprising the same. A multi-ground-clearance self-steering smart sprayer comprises a vehicle platform, the controllable lifting spraying device, a gasoline power generation and supply device and a control device, wherein two self-steering travelling mechanisms are connected with the vehicle platform through rotating structures respectively; the controllable lifting spraying device is fixed at the tail part of the vehicle platform and comprises a sprayer lifting mechanism, the spray boom assembly and a pesticide mixing device, the spray boom assembly is arranged on the sprayer lifting mechanism and connected with the pesticide mixing device, and a spray boom can move up and down under drawing of the sprayer lifting mechanism; the pesticide mixing device is fixed in the middle of a frame platform and used for supplying pesticides to a sprayer for spraying; the gasoline power generation and supply device is fixed at the front part of the frame platform and taken as a steady voltage power supply of equipment; the control device is connected with a drive device, a control motor and multiple sensors. According to the equipment, the control device controls four wheel hub motors to realize self-steering based on wheel differential, besides, the control precision is high, and the turning radius is small.

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 an ultra-wide band impulsator which comprises a nanosecond level driving positive impulse generating circuit, a speed-sensitive switch circuit, a subnanosecond impulse generating and shaping circuit, a voltage source circuit and a current source circuit. The nanosecond level driving positive impulse generating circuit converts impulse signals with random widths into nanosecond level narrow impulses with relatively fixed widths. The speed-sensitive switch circuit is switched into an on status from an off status under the driving of the narrow impulses, and the static power voltage of the input end of the subnanosecond impulse generating and shaping circuit is made to be reduced to be approach to zero rapidly. No signal is input in the input end of the subnanosecond impulse generating and shaping circuit in a static state, the shaping circuit is in a positive breakover status, and an output end has no signal output. When the speed-sensitive switch circuit is switched into the on status form the off status, the input end of the subnanosecond impulse generating and shaping circuit output currents, and the step recovery diode of the shaping circuit is changed into reversed breakover from positive breakover. After a period of time, the diode is changed into reversed cut-off from the reversed breakover, and the output end output currents. When the output end is connected with a load, the output end generates negative-polarity voltage impulses.

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 force-control-based magnetic levitation system and a control method. The system comprises a mechanical device and a control system. The medical device comprises a rotor, an electromagnetic force generation device and dynamometric bearings. The control system comprises a voltage amplifier, a controller and a power amplifier. The dynamometric bearings are arranged at the two ends of the rotor. The electromagnetic force generation device is arranged between the dynamometric bearings at the two ends of the rotor. The input end of the voltage amplifier is connected with the dynamometric bearings, and the output end of the voltage amplifier is connected with the input end of the controller of which the output end is connected with the input end of the power amplifier. The output end of the power amplifier is connected with the electromagnetic force generation device. A displacement control method is replaced by the force control method, the quasi levitation of the rotor is realized, the complexity of a circuit system is lowered, and the system is simple in structure, convenient to construct and suitable for popularization and application, and is flexibly operated.

An electrical indicator system and a method for operating the system includes a plug adapted to be electrically coupled to a power source remote from the vehicle and an indicator adapted to be mounted to the vehicle at a visible location. The indicator is operable to provide a first visual indication when electrical power is present at the plug. The indicator provides a second visual indication, different from the first visual indication, when current is flowing through the plug.

The invention discloses a novel radio source apparatus, which includes a frequency conversion part, an emanation part and an accept part, wherein the frequency conversion part being a self-exciting frequency transformer connecting with the emanation part, and transforming input AC into high-frequency current and inputting into the emanation part; the emanation part and the accept part transform through electromagnetic induction, and the obtained alternating current forming direct current after passing thought a rectifier, a filtering circuit and a regulation circuit, so as to supply electricity for the electric appliance. The invention realizes wireless transmission of power supply, and wireless power utilization of minitype electric appliance.

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 relates to a strengthened heat dissipation type LED illuminating device comprising a lamp cover (1), a circuit board and a base (4), wherein the circuit board is welded with a plurality of LEDs (2); the base (4) is made of aluminum alloy materials; the lamp cover (1) is buckled with the base (4); the circuit board (3) is an aluminum-base circuit board; the base (4) is provided with an inner bottom surface (41) for containing the circuit board (3); the aluminum-base surface of the circuit board (3) is tightly attached to the inner bottom surface (41) of the base (4); and the outer surface of the base (4) is provided with a plurality of sheet-shaped protrusions (42) for dissipating heat. The strengthened heat dissipation type LED illuminating device has good heat dissipation effect and long service life of the LEDs, the LEDs have uniform mixed light and mild light rays, are more suitable for domestic use and play a protection role on eyes of users, and an electricity supplying way is simpler, i.e. the strengthened heat dissipation type LED illuminating device can work by being directly connected into mains supply, thereby being more convenient to use for the users.

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 discloses a 360-degree cruise electric fan installing base which comprises a base body, wherein the base body is internally provided with a clapboard, a cruising and steering motor is fixedly arranged on the clapboard, the base body above the clapboard is internally provided with a motor control plate, the base body under the clapboard is internally and rotatablely provided with a lifting rod, the bottom end of the lifting rod is connected with a base connecting rod, a motor shaft of the cruising and steering motor is arranged at the top end of the lifting rod in an inserting manner, a ring groove with a clamp position is further arranged on a lifting rod body, and a locking bolt clamped into the ring groove is arranged on the side wall of the base body under the clapboard. According to the 360-degree cruise electric fan installing base, the center point at the front side of a fan can be cruised to any angle to blow air, so that the inconveniency due to the fact that the large-range change of the blowing angle needs to manually adjust the fan body when the remote-control fan is used can be avoided, and a novel and practical function is added for the fan.

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).