32results about How to "Reduce rate of ascent" patented technology

Disclosed herein is the use of chemical irritants, such as vanilloid receptor-1 agonists, in sustained/controlled release pharmaceutical preparations which also contain a drug typically having high abuse potential. Inclusion of the VR1 agonist in the pharmaceutical preparation interferes with illicit or inappropriate dosing without significantly interfering with the action of the therapeutic. Also disclosed are exemplary co-formulations of capsaicin (a VR1 agonist) and oxycodone (an opioid therapeutic having high abuse potential) in controlled release preparations.

The invention discloses a DC circuit breaker and a test method. The DC circuit breaker is formed by connecting two current limiting reactors in series to the two ends of four parallel branches. Of the four parallel branches, the first branch is a main branch, and is composed of a quick isolation switch K and an auxiliary quick switch T0 connected in series. The second branch is a transfer branch, and is composed of a solid state switch. The solid state switch is composed of a plurality of IGBT modules connected in series. Each IGBT module is composed of two IGBTs reversely connected in series. A diode is reversely connected in parallel to each IGBT. The third branch is a buffer circuit which is composed of a resistor and a capacitor connected in series. The fourth branch is an energy absorption circuit composed of a zinc oxide arrester. The DC circuit breaker can be quickly closed in a bidirectional manner, and has the advantages of simple structure, easy manufacture and high practicality.

A device for breaking DC currents exceeding 2500 A has a resonance circuit connected in parallel with an interrupter and a surge arrester connected in parallel with the resonance circuit. The resonance circuit has a series connection of a capacitor and an inductance. The relationship of the capacitance in μF to the inductance in μH of the resonance circuit is ≧1.

The invention discloses a small and efficient high-power solid-state modulator and belongs to the technical field of pulse power. The modulator comprises a solid-state modulator component and a pulse transformer (T), wherein the solid-state modulator component comprises a direct-current power supply (E1), an energy storage capacitor (C1) and a solid-state switch (V1). The direct-current power supply (E1) is used for charging the energy storage capacitor (C1). Output pulses of the modulator are obtained through the pulse transformer (T) after the energy storage capacitor (C1), the solid-state switch (V1) and the pulse transformer (T) form a discharge circuit. According to the small and efficient high-power solid-state modulator, the single solid-state switch is used, the equalization voltage and the connection consistency of the solid-state switch are not required to be considered, the voltage is low, insulation design can be achieved easily, the output waveform quality of the modulator is greatly improved, the circuit topological structure is simple, the size is small, the efficiency is high, modularization can be achieved easily, and the modulator is applicable to various platforms.

Being composed of inductance, capacitance and resistance, the matching circuit through coaxial cable is connected between output end of electrical pulse source and condensive load. Characters are that the matching circuit includes resistance-capacitance (CR) branch composed of cascaded CR, an inductance branch. The inductance branch and CR branch are connected in parallel. Parameters of inductance, capacitance and resistance in the matching circuit satisfies frequency response characteristic of ratio (u2/u1) between pulse voltage (u2) on condensive load and pulse voltage (u1) outputted from electrical pulse source. Within effective spectral range of pulse voltage (u1) outputted from electrical pulse source, frequency response characteristic is near to characteristic of distortionless system. The invention restrains oscillation of pulse voltage on condensive load as well as avoids depression of rate of rise of the pulse voltage.

Compositions and methods are provided for administering a pharmaceutical composition to a human patient. Compositions are administered to a human patient orally, once daily, at a therapeutically effective dose. The pharmaceutical compositions comprise a drug selected from the group consisting of brivaracetam, divalproex, lacosamide, levetiracetam, oxcarbazepine, vigabatrin, and pharmaceutically acceptable salts of any of the foregoing, and at least one excipient. At least one of said at least one excipients modifies the release of said drug to provide an extended release form. The pharmaceutical composition have pharmacokinetic properties recited in the claims.

A power converter designed for operation at high frequencies includes a soft-switching cell comprising a split inductor, a resonant inductor, a resonant capacitor, two diodes and a controlled semiconductor. Alternatively, the power converter includes a soft-switching cell comprising a transformer having isolated windings, a resonant inductor, a resonant capacitor, two diodes and a controlled semiconductor.

The invention provides a bridge arm circuit and method inhibiting a fault current of a large-capacity MMC submodule, and mainly aims at inhibition of the fault current of the large-capacity MMC submodule. In a design scheme of bridge arms of a large-capacity MMC, each bridge arm (phase unit) in the converter is designed as an integral body, and reactors are arranged in DC and AC sides of each bridge arm respectively in a manner that bridge arm reactors are dispersed. The total inductance value of the reactors in each bridge arm is kept constant, and the weight coefficients of the reactance in the AC and DC sides in the reactance of the bridge arm are checked according to system parameters. Each arm is connected to the external via the reactors in the AC and DC wire outlets. The bridge arm design scheme of the invention can be used to reduce the peak value of the fault current of the submodule and inhibit the rise rate of the fault current effectively, and further improve utilization rate of power devices in equipment, the cost of primary equipment is not increased, and the economical performance is high.

The invention discloses a direct current limiter and an application thereof. The direct current limiter comprises a current limiting unit, an energy absorption unit and a direct-current circuit breaker unit, wherein the current limiting unit is composed of a three-phase coupling reactor, a pre-charging capacitor, a smoothing reactor, a small direct-current circuit breaker and a line, and when a short-circuit fault occurs, the coupling reactor is equivalent to a large inductor to be connected into a main loop in series, and a voltage opposite to the power supply voltage is generated on the inductor to limit the fault current and reduce energy absorption of a lightning arrester; the energy absorption unit is formed by connecting a diode and a resistor in series and can inhibit stored energyof an inductive element in the line from being transmitted to the lightning arrester; the direct-current circuit breaker unit comprises a direct-current circuit breaker and a lightning arrester, the circuit breaker cuts off the fault current, and the lightning arrester absorbs energy stored by the inductor. The hybrid direct current limiter provided by the invention realizes control of the fault current, energy absorption limitation of the lightning arrester and parallel connection of capacitors to reduce the capacity, and is low in manufacturing cost.

The present invention relates to a power circuit of displaying device, which comprises a timing controller, a control circuit, and a charge pump (single or multiple stages). The timing controller outputs a timing control signal to the control circuit. The control circuit outputs a clock signal or a capacitance adjusting signal according to the timing control signal. The charge pump receives the input voltage and outputs an output voltage according to the clock signal or the capacitance adjusting signal. The output voltage is provided to the scan driver for generating a plurality of scan driving signals. Accordingly, by increasing the rise rate of the output voltage of the charge pump in the voltage conversion time and reducing the rise rate of the output voltage close to the voltage holding time, the present invention can achieve the effect of reducing the power consumption.

The invention relates to a battery energy storage system which comprises a direct-current power distribution cabinet, a direct-current metering cabinet, a converter device, a storage battery cabinet and a combiner box, wherein the direct-current power distribution cabinet and the direct-current metering cabinet are arranged in a direct-current power distribution room, and the converter device is arranged at the installation position of the storage battery cabinet and the combiner box. According to the invention, the arrangement position of the converter device is adjusted; the device is arranged at the installation position of the storage battery cabinet and the combiner box, the distance between the converter device and the direct-current metering cabinet is increased; therefore, the length of a cable between the converter device and the direct-current metering cabinet is prolonged, the purpose of reducing the short-circuit current amplitude and the rise rate of the system is achieved, the effect similar to that of a series current-limiting reactor can be achieved, the design is simple, equipment does not need to be added, the occupied area of the battery energy storage system isprevented from being further increased, and the cost is saved.