92results about How to "High voltage output" patented technology

A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.

A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several power transistors configured as switches, several solid-dielectric capacitors for filtering and energy storage, several inductors for power conversion and ancillary components to support the above elements in operation. The integrated circuit includes all monitoring, control and communications circuitry needed to operate the inverter. The integrated circuit controls the activity of pulse-width modulated power handling transistors in both an input boost converter and a single-phase or multi-phase output buck converter. The integrated circuit also monitors all power processing voltages and currents of the inverter and can take appropriate action to limit power dissipation in the inverter, maximize the available power from the associated PV module and shut down the inverter output if the grid conditions so warrant. The integrated circuit implements power line communications by monitoring the AC wiring for signals and generating communications signals via the same pulse-width modulation system used to generate the AC power. Communications is used to report inverter and PV module status information, local identification code and to allow for remote control of inverter operation.

Electrochemical battery cells, and more particularly, to cells comprising a lithium negative electrode and an iron disulfide positive electrode. Before use in the cell, the iron disulfide has an inherent pH, or a mixture of iron disulfide and an pH raising additive compound have a calculated pH, of at least a predetermined minimum pH value. In a preferred embodiment, the pH raising additive compound comprises a Group IIA element of the Periodic Table of the Elements, or an acid scavenger or pH control agent such as an organic amine, cycloaliphatic epoxy, amino alcohol or overbased calcium sulfonate. In one embodiment, the iron disulfide particles utilized in the cell have a specific reduced average particle size range. Methods for preparing cathodes and electrochemical battery cells comprising such cathodes including (a) iron disulfide or (b) a mixture of iron disulfide and the pH raising additive compound, having (a) an inherent pH or (b) a calculated pH greater than or equal to a predetermined minimum value are disclosed.

An aerosol delivery device is provided that includes at least one housing, a nozzle and a control component. The housing encloses a reservoir configured to retain an aerosol precursor composition. The nozzle is coupled to the housing to discharge aerosol precursor composition from the reservoir, and the nozzle includes a piezoelectric or piezomagnetic material surrounding a mesh. The control component includes a microprocessor coupled to and configured to drive the piezoelectric or piezomagnetic material to vibrate and cause a discharge of components of the aerosol precursor composition through the mesh and thereby produce an aerosol for inhalation by a user, with the components of the aerosol precursor composition discharged through the mesh having a diameter of less than one micrometer.

A device for handling a fluid includes a corona discharge device and an electric power supply. The corona discharge device includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply is connected to supply an electric power signal to said corona discharge and collector electrodes so as to cause a corona current to flow between the corona discharge and collector electrodes. An amplitude of an alternating component of the voltage of the electric power signal generated is no greater than one-tenth that of an amplitude of a constant component of the voltage of the electric power signal. The alternating component of the voltage is of such amplitude and frequency that a ratio of an amplitude of the alternating component of the highest harmonic of the voltage divided by an amplitude of the constant component of said voltage being considerably less than that of a ratio of an amplitude of the highest harmonic of the alternating component of the corona current divided by an amplitude of the constant component of the corona current, i.e., (V_ac/V_dc)≦(I_ac/I_dc).

An image forming device in which a fixing unit is powered from the power supply, and a cooling unit is driven by electricity obtained by supplying waste heat from the fixing roller to a thermoelectric conversion device. After turning the image forming device ON, when the temperature of the fixing roller reaches a certain temperature thermoelectromotive force is generated in the thermoelectric conversion device. When the power supply is turned OFF, the thermoelectromotive force in the thermoelectric conversion device becomes zero when the temperature of the fixing roller drops to a certain temperature. Also, a delay circuit is provided between the thermoelectric conversion device and the cooling fan, so supply of electricity to the cooling fan is later than the time that thermoelectromotive force is generated, and the time that power supply to the cooling fan stops is also later than the time that the thermoelectromotive force becomes zero.

A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.

Traditional charge pump circuit for generating positive and negative voltages, without high voltage outputs. There is a provided a charge pump circuit comprising: a first reverse current prevention circuit connected between an external power supply and a first internal node; a first output node, connected to the first internal node, for outputting a first output potential; a second reverse current prevention circuit connected between a second power supply node receiving ground potential and a second internal node; power supply node for receiving a first power supply potential; a first reverse current prevention means connected between the first power supply node and a first internal node; a first output node, connected to the first internal node, for outputting a first output potential; and power supply generation means, connected between the first internal node and second internal node, for enhancing the potential of the second internal node as compared to that of the first internal node, wherein the power supply generation means is formed on or within a semiconductor substrate, and includes a diode element provided so as to flow a current from the first internal node to the second internal node, and a capacitor having one electrode connected to the first and second nodes, and the other electrode provided with a clock signal. thereby enabling higher outputs on both positive and negative voltages.

There is provided a power supply unit, comprising: a converter transformer; a first low voltage generation unit to generate a first voltage on a secondary side of the converter transformer and output the first voltage; a first controller that controls an activation state of a primary side of the converter transformer based on the first voltage; an inactivation unit to inactivate operation of the first controller based on the first voltage to let the first low voltage generation unit to suspend output of the first voltage; a high voltage supply unit to output a high voltage higher than the first voltage by using the first voltage; a detection unit to detect an anomalous state concerning output of the high voltage of the high voltage supply unit. The high voltage supply unit inactivates the operation of the first controller through the inactivation unit when the anomalous state is detected.

A fuel cell system that includes a fuel cell stack and an EESD electrically coupled to a common high voltage bus line. The EESD has a higher voltage output than the fuel cell stack, and thus the stack is unable to fully charge the EESD, for example, at system shut-down. In order to allow the fuel cell stack to fully charge the EESD, the EESD is separated into a plurality of separate electrical storage banks having lower voltage potentials. A series of contactors are provided to electrically couple the storage banks in series during normal system operation, and separately charge the storage banks using the fuel cell stack so that they are fully charged. The series of contactors can also be configured so that the storage banks can be electrically coupled in series during normal operation of the system and be electrically coupled in parallel during charging at system shut-down.

The invention provides a current sensor based on an auto-bias magnetoelectric composite material; the current sensor comprises a support pedestal, a packaging housing, a mass block and an auto-bias magnetoelectric composite material; one end of the auto-bias magnetoelectric composite material is fixedly connected with the support pedestal, and the other end is connected with the mass block; the auto-bias magnetoelectric composite material comprises a hard magnetic thin layer, a magnetic induced shrinkage or elongation material layer and a piezoelectric material layer; the hard magnetic thin layer and the piezoelectric material layer are respectively laminated on the top and bottom surfaces of the magnetic induced shrinkage or elongation material layer; the hard magnetic thin layer providesa DC bias magnetic field for the magnetic induced shrinkage or elongation material layer, thus allowing the magnetic induced shrinkage or elongation material layer to make reactions on an annular minimal magnetic field formed by a current carrying wire under a zero bias magnetic field, finally enabling the magnetic induced shrinkage or elongation material layer to realize an auto bias magnetic-mechanical-electric coupling effect. When the auto-bias magnetoelectric composite material senses the annular magnetic field formed by the current carrying wire, electric output can be formed by the auto-bias magnetoelectric coupling effect, thus finally realizing current sensing.

A device for handling a fluid includes a corona discharge device and an electric power supply. The corona discharge device includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply is connected to supply an electric power signal to said corona discharge and collector electrodes so as to cause a corona current to flow between the corona discharge and collector electrodes. An amplitude of an alternating component of the voltage of the electric power signal generated is no greater than one-tenth that of an amplitude of a constant component of the voltage of the electric power signal. The alternating component of the voltage is of such amplitude and frequency that a ratio of an amplitude of the alternating component of the highest harmonic of the voltage divided by an amplitude of the constant component of said voltage being considerably less than that of a ratio of an amplitude of the highest harmonic of the alternating component of the corona current divided by an amplitude of the constant component of the corona current, i.e., (V_ac/V_dc)≦(I_ac/I_dc).

An online switching circuit for series-parallel connection of a battery pack is characterized in that batteries in the battery pack are connected through a bidirectional linkage switch group, wherein the bidirectional linkage switch group can be a mechanical bidirectional linkage switch group, multi-group synchronously-controlled bidirectional contact electromagnetic relays or solid-state relays or transistor electronic switching circuits. Multiple combination switches in coaxial linkage or synchronously-controlled relay groups are correspondingly adopted according to different quantities of single batteries in the battery pack, series-parallel connection of the battery pack is instantaneously switched by changing the turning direction of an intermediate contact and a moving contact in a combination circuit of the battery pack. By the aid of the switching circuit, the battery pack can be connected onto electric equipment in a series connection manner and is used for supplying high-voltage output for the equipment, and the battery pack can also be connected onto charging equipment in a parallel connection manner so that the charging equipment can perform identical equalizing charge for each single battery with optimum voltage required by each single battery, and the single batteries in the battery pack can be kept consistent.

An improved circular multi-element semiconductor thermoelectric hybrid utilizes a make-before-break high frequency switching output component to provide nominal alternating current voltage outputs. Overall efficiency of heat conversion is improved by coupling a chiller to the thermoelectric generator where exhaust heat produces chilled liquid or air that is conveyed to the cold side of the thermoelectric device. The thermoelectric generator is used in a variety of transportation vehicles including manufactured vehicles, retrofitted vehicles and vehicle power combinations.

The invention discloses a micro-fluidic chip for viscosity testing, and a preparation method. The chip comprises five structures: a PDMS substrate with a miniature groove, detection electrodes, a PVDF nanofiber film, a PDMS film and a PDMS cover plate with a miniature channel. The preparation method comprises the steps: firstly making the substrate with the miniature groove and the PDMS miniature flow channel cover plate through the photoetching of SU8 photoresist and the demoulding technology; secondly making a pair of detection electrodes at two sides of the miniature groove of the PDMS substrate through employing a mask magnetron sputtering method; thirdly transferring the PVDF film, made through employing an electrostatic spinning method, to the electrodes; finally carrying out the bonding of the substrate and the cover plate, and forming a complete micro-fluidic chip. The micro-fluidic chip is stable in structure, facilitates the integration, is small in number of demands for samples, has no requirements for class, is short in testing time, does not need power, and facilitates the extension of a manufactured micro-fluidic chip viscometer to miniaturization even a hand-held type.

A quick low-voltage rechargeable battery is switched between a charging mode and a discharging mode. The battery includes plural battery cells and a power management circuit. Each battery cell includes a battery positive terminal and a battery negative terminal. The battery positive terminal of each battery cell corresponds to the battery negative terminal of another battery cell sequentially, so as to constitute a battery cell sequence. Respectively, the battery cells connect the power management circuit. The power management circuit includes a loading positive terminal and a loading negative terminal used to connect to a load. In the discharging mode, the power management circuit switches the battery cells to a series connection state; in the charging mode, the power management circuit switches the battery cells to respectively connect to a charging source and to be charged, and the battery cells are not connected in series.

The invention discloses an equipment and method utilizing an isothermal relaxation current to evaluate an aging state of a fluorescence fiber temperature sensor sheath in a transformer. The equipment comprises a clamp used for fixing and clamping fiber and an isothermal relaxation current measurement and control system; according to the method for evaluating the aging state of the fluorescence fiber temperature sensor sheath in the transformer, a special high voltage polarization electric field is pre-applied to the fiber, after polarization for a time segment, the high voltage polarization electric field is removed, and a depolarization relaxation current is detected; microscopic parameters related to insulation materials and aging factor parameters can be acquired through relevant analysis, and reliable bases are provided for fluorescence fiber sheath insulation state evaluation. The test equipment comprises a DC high voltage source and a microammeter, and voltage output and current detection precision is high; the rich material microscopic performance information in the isothermal relaxation current is utilized, a new surface electrode distribution mode is proposed, and relevant analysis theories are combined; and the test system has a light structure and is convenient to mount and carry.

The invention provides a liquid-phase micro-nano processing method and equipment. The equipment combines with a liquid-phase nano processing method, and achieves the graphical processing of a nano film, the processing of a solid nano hole and the nano 3D printing on the micro-nano processing equipment based on a nano glass micro-tube. A quartz tuning fork is adopted to control a nano glass micro-tube to be in direct contact with a nano film for processing, and a bias voltage or current setting mode is adopted to process the nano film. According to the liquid-phase micro-nano processing methodand equipment, multiple kinds of work such as nano graph equipment, nano hole or nano hole array equipment and 3D nano printing can be achieved on the same platform, subtractive manufacturing is achieved, additive manufacturing is also achieved, and the equipment complexity, especially the nanoscale equipment complexity, can be greatly improved.