163 results about "Impulse generator" patented technology

A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

The application discloses a mandarin fish domestication pool, which comprises a pool body, wherein an oxygenation device, a water inlet and a water outlet are arranged in the pool body, a bait fish breeding frame is arranged below the water inlet, and a feeding device is arranged on the side of the bait fish breeding frame; the feeding device comprises a feeding pipe, a bait temporary storage tank arranged on the upper end of the feeding pipe, a feeding hopper arranged on the upper end of the bait temporary storage tank, cathode ring pieces and anode ring pieces arranged in the feeding pipe, and a pulse generator and a pulse power amplifier connected through wires. The domestication pool is improved, so that live fish feeding, live fish and dead fish or feed proportionate feeding are facilitated, and switching and adjustment are facilitated, thereby improving the convenience and success rate of domestication.

There is provided a plasma processing apparatus comprising: a plasma processing chamber; a substrate support disposed in the plasma processing chamber, the substrate support including: a base, a ceramic member disposed on the base and having a substrate support surface and a ring support surface, one more annular members disposed on the ring support surface to surround a substrate on the substrate support surface, first and second central electrodes inserted into the ceramic member, first to fourth vertical connectors inserted into the ceramic member, first and second annular connectors inserted into the ceramic member, and a central heater electrode inserted into the ceramic member; a DC power source electrically connected to an outer region of the first annular connector through the third vertical connector; and a voltage pulse generator electrically connected to an outer region of the second annular connector through the fourth vertical connector.

Drilling mud is passed through a valve assembly set at a particular opening amount, mud flow rate and force applied by the drilling mud to a portion of the valve assembly are measured, and density of the drilling mud is estimated based on historical data. Historical data is generated by directing multiple flows through the valve assembly, where the flows are at different flow rates, and at each flow rate, different drilling fluids having different densities are directed through the valve assembly. For each flow, the valve assembly is adjusted to a different amount of opening, and a respective force exerted on the valve assembly by the flow is measured. An example of the valve assembly is a mud pulse generator having a plug member engaged with an orifice opening, a sensor in the pulse generator measuring a force applied by the mud flow.

This invention discloses a high-viscosity heavy oil heat exchanger based on a spin-flow tortuous tube, comprising a shell, tube-side inlet and outlet, and shell-side inlet and outlet; a heat exchange tube bundle connected between the tube-side inlet and outlet, the heat exchange tube bundle being composed of multiple U-shaped spin-flow tortuous tubes arranged side by side; each spin-flow tortuous tube includes a tortuous tube inlet, a spiral guide rib, a tortuous tube outlet, and a vibration-damping support ring, the spiral guide rib being disposed on the inner wall of the vibration-damping support ring, the pitch of the spiral guide rib increasing linearly along the heavy oil flow direction; multiple baffles are uniformly arranged circumferentially on the heat exchange tube bundle, each baffle having multiple tube holes, the spin-flow tortuous tubes passing through the tube holes of the baffles and fitting with the clearance; an online cleaning device is installed on the shell, the online cleaning device monitoring the scaling condition through an acoustic wave monitor, and the control unit controlling a pulse generator to emit pulse waves to clean the scaling. This invention can achieve efficient and stable heat exchange of high-viscosity heavy oil under low energy consumption conditions, while simultaneously solving the performance degradation problem caused by scaling through an intelligent cleaning system.

The utility model provides an underground concrete electroosmosis pulse detection test box which comprises a box body, a bearing platform, a lifting mechanism, a detection plate, a partition plate, a first air cylinder, a controller, a transformer, a pulse generator, a touch panel and a box door. A bearing platform, a lifting mechanism, a partition plate, a controller, a transformer and a pulse generator are respectively fixed in the box body; a detection plate is arranged on the upper side of the bearing platform, and the upper side face of the detection plate is fixed to the partition plate through a first air cylinder; and a touch panel is fixed on the outer side surface of the box body. According to the arrangement, during use, the transformer, the pulse generator and the bearing platform are matched to provide electroosmosis pulses for the underground concrete block, and then the bearing platform is matched with the detection plate, so that a worker can conveniently analyze the change of the electroosmosis pulses suffered by the underground concrete block.

Internal combustion engine control device (100) comprising a control unit that controls the operating conditions of an internal combustion engine (1) using a pulse output from a crank angle sensor (101) which detects a rotational state of a crankshaft (6) of the internal combustion engine (1) by detecting a plurality of convex teeth (7b) arranged in a radial direction on an outer periphery of a body part (7a) designed as a circular plate element of a pulse generator wheel (7, 7', 7") connected to the crankshaft (6), characterized in that the plurality of convex teeth (7b) has a plurality of short convex teeth (7b1) and a plurality of long convex teeth (7b2), each having circumferential lengths (B2) that are longer than the respective circumferential lengths (B1) of the body part (7a) at the short convex teeth (7b1), wherein the plurality of long convex teeth (7b2) is provided in a first arrangement area over a retard-side angular range of 90 degrees from a top dead center angular position (TDC) of the internal combustion engine (1) on a retard side, and over a lead-side angular range of 90 degrees from the top dead center angular position (TDC) on a lead-side, wherein in a predetermined positional mounting relation of the pulse generator wheel (7, 7', 7") the plurality of short convex teeth (7b1) is provided in a second arrangement area which, in the predetermined positional mounting relation, lies outside the first arrangement area, the control unit detects a rising edge of the pulse output or a falling edge of the pulse output, which is generated successively in time sequence, in accordance with the fact that the crank angle sensor (101) detects circumferential ends (7b11, 7b12, 7b21, 7b22) of a convex tooth from the plurality of short convex teeth (7b1) and the plurality of long convex teeth (7b2), an arithmetic processing operation performed by the control unit, comprising a first cranking process, which is an arithmetic processing operation performed upon detection of a pulse end by the control unit, which is one of the rising and falling edges of the pulse output generated in accordance with the crank angle sensor (101) detecting an end of a tooth that is one of the circumferential ends (7b11, 7b12, 7b21, 7b22) of the plurality of short convex teeth (7b1) and the plurality of long convex teeth (7b2), and a second cranking process, which is an arithmetic processing operation performed upon detection of the other pulse end by the control unit, which is the other of the rising and falling edges of the pulse output generated in accordance with the crank angle sensor (101) detecting another end of the tooth that is the other of the circumferential ends (7b21,7b22) from the multitude of long convex teeth (7b2).

The utility model provides a flushing device for a tube bundle demister of a pellet desulfurization system, the tube bundle demister is arranged in a desulfurization tower and comprises a spraying assembly, the tube bundle demister is provided with two layers, and the two layers of tube bundle demisters are arranged up and down; one spraying assembly is arranged above the tube bundle demister on the upper layer, one spraying assembly is arranged below the tube bundle demister on the lower layer, and one spraying assembly is arranged between the two layers of tube bundle demisters. The rotatable spray head core is arranged in the spray head of the flushing device, and the self-cleaning effect can be achieved. High-pressure pulses are sent into the main pipe through the pulse generator, and crystallized dirt attached to the inner wall of the spray head is removed. Based on the distribution characteristics of crystalline dirt blocking the tube bundle demister, an ultrasonic generator of an auxiliary spraying assembly is designed, the flushing effect of the flushing device on the tube bundle demister of the high-pellet desulfurization system is improved, and sewage generated in the flushing process is reduced.

The invention provides an implantable pulse generator which is used for a small implantable nerve stimulation system and is suitable for receiving and fixing a stimulation electrode. The implantable pulse generator comprises a main body and a locking assembly. The body has a stimulating electrode receiving aperture and a locking aperture. The locking assembly is configured to pass through the locking hole and fix the stimulating electrode. The locking assembly comprises a locking bolt and a first sealing ferrule. The locking bolt is composed of a locking bolt head part and a locking bolt rod part in the first direction. The diameter of the locking bolt head part is larger than that of the locking bolt rod part. The locking bolt rod part penetrates through the locking hole and enters the stimulating electrode receiving hole to abut against the stimulating electrode. By providing a locking bolt having a head such that a first sealing ferrule may be added between the head and the body, the sealing interface avoids the possibility of thread breakage. As the rod part of the locking bolt extends into the locking hole, the first sealing ferrule is extruded, and the sealing effect is improved.

A system for providing neurostimulation to a patient includes a pulse generator having a housing. The implantable neurostimulation lead is configured to connect with a pulse generator, and the pulse generator is configured to generate a plurality of electrical pulses for delivering neurostimulation therapy through the lead to a patient when the lead is implanted at a target location. The lead includes one or more conductors extending from a proximal end of the lead to one or more neurostimulation electrodes disposed at or near a distal end of the lead. The lead comprises an energy absorber comprising a carbon nanotube material and extending substantially along the length of the one or more conductors.

The utility model provides equipment for pulse-type cleaning of a membrane filtration component, which relates to the technical field of cleaning and filtering equipment and comprises a cleaning pool, a bent baffle is fixed between the inner walls of two sides of the cleaning pool and close to the edge of one side, and an adjusting cavity is formed in the bent baffle. The top of the adjusting cavity extends to the top of the bent baffle, the bottom of the adjusting cavity extends to one side of the bottom of the bent baffle, a hollow filter plate is fixed between the inner walls of the two sides of the cleaning pool, and one side of the bent baffle is fixed to one side of the hollow filter plate. According to the device disclosed by the utility model, firstly, the fixed block is shifted to slide the cut-off plate towards one side of the opening, so that the opening is opened, water flow in the cleaning pool can flow to the hollow filter plate through the opening, and the water flow is filtered under the filtration of the cleaning membrane in the hollow filter plate; the filtered water flow is discharged through the water outlet pipe.

Ultrasound emitting device for applying selective treatments to hypodermic tissue (adipose and connective tissue) in rejuvenation and / or body contouring processes, comprising an electrical pulse generator, an ultrasonic transducer (3), an electronic control unit (6) equipped with specific software that controls the frequency, voltage, and duty cycle of the pulse generator, and application means (4) for orienting and directing the acoustic field onto the area to be treated on the patient / user, wherein said transducer emits in each pulse an acoustic field with an energy density not exceeding 0.7W / cm2 and a minimum emission duration of 100ms. Preferably, the transducer emits either at a single frequency or in a frequency sweep, in a frequency range between 185 kHz and 333 kHz, and even more preferably at 244 kHz.

There is provided a plasma processing apparatus comprising: a plasma processing chamber; a substrate support disposed in the plasma processing chamber, the substrate support including: a base, a ceramic member disposed on the base and having a substrate support surface and a ring support surface, one more annular members disposed on the ring support surface to surround a substrate on the substrate support surface, first and second central electrodes inserted into the ceramic member, first to fourth vertical connectors inserted into the ceramic member, first and second annular connectors inserted into the ceramic member, and a central heater electrode inserted into the ceramic member; a DC power source electrically connected to an outer region of the first annular connector through the third vertical connector; and a voltage pulse generator electrically connected to an outer region of the second annular connector through the fourth vertical connector.

The present application relates to oilfield coiled tubing operation technical field, and disclose a kind of self-excitation type full metal drilling pulse generator, mainly by power system and oscillation system composition;The power system includes full metal helical stator and rotor;The rotor is rotated in full metal helical stator inside and form helical sealed cavity between each other;The oscillation system includes swing block seat and swing block of screw connection in the bottom of full metal helical stator;The swing block seat and swing block are hot mounted between each other, and swing block seat and swing block are interference fit;Fixed block is arranged in the bottom of the swing block;The top joint is connected in the top of the full metal helical stator, and the rotor end stopper is built-in in the top joint;By reducing drilling tool friction resistance, static friction is converted into dynamic friction, so as to significantly improve drilling speed, ensure the stable control of well trajectory;Adopt full metal stator and rotor power structure, effectively expand temperature use range and corrosion resistance range.

The application belongs to the technical field of medical devices, and particularly relates to a negative pressure wound dressing system based on an alternating pulse electric field. The system comprises a dressing system main controller, a directional electric field dressing and a heart rate monitoring sensor. The main controller comprises an alternating pulse generator and two pulse current circuits, which are connected to a first electrode and a second electrode on the dressing respectively. The core technology is that the system controls the alternating pulse generator to periodically switch the current direction between the two pulse current circuits according to the heart rate value measured by the heart rate monitoring sensor, so as to dynamically change the application direction of the alternating pulse electric field applied to the wound. The system can realize adaptive switching of the electric field direction according to the physiological state (such as rest / activity) of the patient, and can optionally integrate a negative pressure drainage function. The dressing system provided by the application can provide dynamic electric stimulation more in line with the individual physiological rhythm, and aims to realize intelligent and personalized wound treatment to promote tissue repair.

The invention discloses a pulse bias power supply, a control method and a vacuum coating system.The power supply comprises an alternating current-direct current conversion circuit, a full-bridge LLC resonance circuit, a phase dislocation three-level Buck circuit and a pulse generator circuit which are connected in sequence, and further comprises a controller; the controller is respectively connected with the control ends of the AC-DC conversion circuit, the full-bridge LLC resonance circuit, the phase-dislocation three-level Buck circuit and the pulse generator circuit; the working mode of the pulsed bias power supply comprises a first working mode and a second working mode. According to the invention, the wide-gain negative pulse output with variable voltage and pulse width can be realized, and the energy and flux of ions and the charge state of the surface of a workpiece can be accurately controlled, so that various coating process requirements are met.

Crankshaft angle detection device, which includes: an alternating current generator rotor (20) which is held by one end of a crankshaft (10) and is designed to rotate integrally with the crankshaft (10); a pulse generator ring (30) made of a metal plate, having an outer diameter (D2) larger than an outer diameter (D1) of the AC generator rotor (20), wherein the pulse generator ring (30) has an annular plate region (31) and a detected region (32) having a plurality of convex regions (32) formed on an outer circumference of the annular plate region (31), which form a predetermined void between themselves and an outer circumferential surface (22) of the AC generator rotor (20), being curved in the direction of the outer circumferential surface (22) of the AC generator rotor (20) in an axial direction of the crankshaft (10), and is configured to rotate integrally with the AC generator rotor (20), wherein the annular plate region (31) is attached to a side surface (21) of the AC generator rotor (20); and a magnetic sensor (40) which is formed on an outer circumference of the pulse generator ring (30) and is designed to detect the detected area (32).

The present invention reduces pain and improves function long-term in persons with back pain using electrical stimulation in the back. This approach involves an electrical stimulation device including at least one electrode adapted for insertion within an animal body with back pain and at least one pulse generator operatively coupled with the at least one electrode, wherein the pulse generator delivers electrical stimulation activating at least a nerve innervating at least a paraspinal muscle in a back of the animal body for pain relief.

The present disclosure provides a device and a method for neuromodulation treatment. The neuromodulation device comprises a pulse generator to generate electrical pulses and at least one active electrode coupled to the pulse generator. The at least one active electrode has an electrically conductive surface configured to be attached to a leg of a patient. The at least one active electrode stimulates via the electrically conductive surface a nerve of the leg of the patient by the electrical pulses generated by the pulse generator. A control unit controls the pulse generator and sets at least one parameter of the generated electrical pulses. A response detector detects a response of the patient to the nerve stimulation and provides feedback on the detected response to the control unit. For the treatment the control unit determines a treatment setting by varying an initial setting of the at least one parameter of the generated electrical pulses until the detected response of the patient to the nerve stimulation is within a predetermined range.

A lead for an implantable medical device (IMD) includes an electrode having a plurality of brick segments that are discrete and mechanically connected to one another in a line. The brick segments are electrically conductive and electrically connected to one another. The brick segments are configured to be powered by a pulse generator of the IMD to deliver high-voltage shocks for defibrillation therapy.

The present application relates to an implantable electrical stimulation system and a control method. The system comprises an electrode assembly, the electrode assembly comprising a stress release section for buffering stress transmitted from the tail end of the electrode assembly and at least one contact; the stimulation section and the stress release section are connected according to a bending angle. The system further comprises a processing unit configured to, based on the measurement of the activity in the brain region of the patient, control the pulse generator to generate stimulation pulses in a first time sequence; in a second time sequence, update the electrical stimulation scheme to a second stimulation parameter set based on the degree of coincidence between the feedback information of the activity in the brain region of the patient and the expected activity information; in a third time sequence, control the at least one contact remaining to the patient to electrically stimulate the patient to regulate the state of the patient to a normal state in the third stimulation parameter set. The present application combines the electrode structure conforming to the physiological characteristics and the adaptive pulse control.

The invention discloses a pressure balancing part for a continuous wave mud pulse generator, and relates to the technical field of underground drilling tool equipment. The device comprises an axially telescopic transmission shaft piece and an auxiliary transmission piece, the auxiliary transmission piece is fixed on a mounting sleeve of the pulse generator, a rotary valve of the pulse generator is connected to a telescopic shaft of the transmission shaft piece, and the telescopic shaft of the transmission shaft piece penetrates through the rotary valve to be connected with the auxiliary transmission piece. A rotary valve rotor of the rotary valve is fixedly connected with a telescopic shaft of the transmission shaft piece, and a rotary valve stator is rotationally connected with the rotary valve rotor; when the transmission shaft piece drives the rotary valve rotor to rotate relative to the rotary valve stator, the telescopic shaft drives the rotary valve to integrally move in the axial direction of the mounting sleeve under the connection matching of the telescopic shaft of the transmission shaft piece and the auxiliary transmission piece. In the slurry throughput change process of the rotary valve, the rotary valve is made to make adaptive movement along the rotating axis of the rotary valve through the cooperation effect of the transmission shaft piece capable of stretching and retracting in the axial direction and the auxiliary transmission piece, so that the pressure at the position of the rotary valve is dynamically balanced.

This invention discloses a high-precision anti-glare panel deformation resistance testing device, comprising an observation module, a displacement driving module, a measurement feedback module, a support and leveling module, and a testing module. The observation module includes a high-magnification microscope with a crosshair and a metal support for positioning and measuring the surface deformation of the anti-glare panel. The displacement driving module uses a dual-axis ball screw slide to drive the metal panel movement and is controlled by a pulse generator to achieve precise microscope positioning. The measurement feedback module records displacement data in real time using a magnetic scale mounted on the slide. The support and leveling module includes a housing and an adjustable leveling mechanism; adjustable leveling bolts adjust the device's horizontal state to improve measurement stability. The testing module applies loads using an electronic tensile testing machine, a traction rope, and pulleys, and guides the force direction to ensure the measurement meets standard requirements. This invention can measure the deformation resistance of anti-glare panels with high precision, improving the stability and repeatability of the test.

Some embodiments include a high voltage waveform generator comprising: a generator inductor; a high voltage nanosecond pulser having one or more solid state switches electrically and / or inductively coupled with the generator inductor, the high voltage nanosecond pulser configured to produce a pulse burst having a burst period, the pulse burst comprising a plurality of pulses having different pulse widths; and a load electrically and / or inductively coupled with the high voltage nanosecond pulser, the generator inductor, and the generator capacitor, the voltage across the load having an output pulse with a pulse width substantially equal to the burst period and the voltage across the load varying in a manner that is substantially proportional with the pulse widths of the plurality of pulses.

The application relates to the technical field of zinc oxide arresters, and discloses a zinc oxide arrester with a self-repairing function, which comprises a base and an arrester body, the base is provided with cross arm mounting racks on both sides, the top end of the base is provided with a heat dissipation shell, the heat dissipation shell is internally provided with an anti-interference shell, and heat-absorbing insulation partition plates are arranged between the inner walls of the anti-interference shell. The application realizes self-energy supply of the system, does not need an external power supply, provides opposite driving force through a reverse pulse electric field generated by a pulse generator, forces the migrated ions to return to the original position or a more stable state, integrates four functions of monitoring, diagnosing, energy taking and activating in a compact system, realizes real intelligentization, on-line type, self-energy supply and self-repairing function, the coupling capacitor plays a protection role, the repair liquid can independently and self-repair the cracked valve body, can be repaired for multiple times, and does not affect the electrical performance.

Methods, systems and apparatuses for delivering electrical or other therapy in the vicinity of the eye. One or more electrodes are positioned on or near the eye, such as contacting the superior or inferior eyelids, on the conjunctiva or medial or lateral canthus, on or inside the nose, or on the forehead. A remote or return electrode is optionally positioned elsewhere on the patient on the torso, neck, back, a limb, an extremity, on the back or side of the head, or near the ear, mandible or temple. A variety of pulse generator positions and support apparatuses are disclosed as well. The pulse generator is used to deliver one or more of therapy or diagnostic electrical pulses to the patient to address a condition of the eye.

The utility model provides an intelligent controllable pulse electrical stimulation acupoint therapeutic apparatus, and belongs to the technical field of medical auxiliary equipment. The intelligent controllable pulse electrical stimulation acupoint therapeutic apparatus comprises a power module, a pulse generator and an acupoint stimulator, the pulse generator comprises a single pulse circuit, a single switch, a continuous switch and a manual switch, and the single switch and the continuous switch are arranged in parallel and electrically connected with the acupoint stimulator through the single pulse circuit. The single switch is electrically connected with the power supply module, and the continuous switch is electrically connected with the power supply module through the manual switch. According to the utility model, through continuous, single and manual pulse electrical stimulation output in various modes, the stimulation modes of acupoint stimulation by pulse electrical stimulation can be effectively increased, an operator can conveniently select different stimulation modes according to different needs, and the diversity of acupoint stimulation by pulse electrical stimulation is further improved.

This disclosure provides electroporation cartridges for single-use electroporation, as well as electroporation cartridges, electroporation instruments and systems for automated batch processing, and methods of electroporation using these devices and systems. In some embodiments, the electroporation cartridge includes: an electroporation chamber defined by an elongated body; a first electrode at a proximal end; and a second electrode at a distal end of the chamber. The electroporation system of this disclosure includes one or more components including: a pulse generator; a chamber for placing a flow-through or single-use electroporation cartridge; components for storing cells; cooling and precooling mechanisms; a modularly insertable housing having a chamber for holding and arranging the electroporation system and reagent components; one or more pumps for moving samples through the system; and a processor and a controller.

An ablation system and methods comprising a catheter having an expandable basket and a shaft assembly comprising an outer and inner elongated shaft allowing relative longitudinal movement. The expandable basket comprises filaments braided into a braided mesh including electrodes for ablation, mapping and measurement. An expandable basket at the distal end of the catheter is coupled to both shafts and is deployable from a collapsed to an expanded configuration. The system includes an introducer sheath with a highly abrasion-resistant inner liner designed for smooth catheter deployment. An electrical control circuits regulates the delivery of high-voltage pulses from a pulse generator to the target tissue, enhancing the safety, precision and effectiveness of tissue ablation.

The invention discloses an electrical test system for testing a to-be-tested device unit based on a transmission electron microscope. The electrical test system comprises an electrical signal output line, a pulse generator, a signal conversion box, a power supply test source meter and a control program unit. The electrical signal output line is used for connecting an electrical input port of an electrical test sample rod in the transmission electron microscope and an electrical signal source, the signal conversion box is used for controlling the type of the signal source of an electrical signal finally input into the electrical test sample rod, and the electrical test system comprises two signal sources, one is a pulse generator used for emitting a pulse voltage signal; and the other one is a power supply test source meter which is used for sending a direct-current voltage or current signal or testing the resistance state of the sample unit. According to the invention, the electrical test function of the device unit to be tested can be realized in the transmission electron microscope, so that the structural evolution of an electronic material under the action of an external electric field can be researched more deeply and systematically, the change rule of corresponding electrical parameters can be obtained, and effective guidance is provided for the development and research of the electronic material.