Abstract: A system, method and computer program product produce spike-dependent plasticity in an artificial synapse. A method includes: an electronic device generating a pre-synaptic pulse that occurs a predetermined period of time after receiving a pre-synaptic spike at a first input. The electronic device generating a post-synaptic pulse that starts at a baseline value and reaches a first voltage value a first period of time after receiving a post-synaptic spike at a second input, followed by a second voltage value a second period of time after the post synaptic spike, followed by a return to said baseline voltage a third period of time after the post-synaptic spike. The generated pre-synaptic pulse is applied to a pre-synaptic node of a synaptic device in series with a rectifying element that has a turn-on voltage based on a threshold. The generated post-synaptic pulse is applied to a post-synaptic node of said synaptic device.

Abstract: A device, system and method for treating biological cells includes a voltage source, a half-controlled bridge connected to the voltage source, and a load connected across the half-controlled bridge. The half-controlled bridge includes a first switch, a second switch, a first diode and a second diode. The load includes an inductor connected in parallel with a cell or chamber. A controller is connected to the first and second switches and operates the first switch and the second switch to selectively generate one or more bipolar pulses, wherein each bipolar pulse comprises a positive polarity voltage pulse and a negative polarity voltage pulse with a negligible delay between the positive polarity voltage pulse and the negative polarity voltage pulse.

Abstract: A device for applying a high voltage using a pulse voltage is provided which applies a high voltage having a pulse width ?0 to a capacitive load (1) through a pulse transformer (4), the high voltage having pulse-like peaks with a steep leading edge, wherein a capacitance C1 of the capacitive load (1) and a secondary side leakage inductance L1 of the pulse transformer (4) satisfy the equation: L1=(?0/?)2×(1/C1). This enables enlargement of the pulse-like peaks and application of any pulse repetition frequency when the high voltage having the pulse-like peaks is applied to the capacitive load through the pulse transformer.

Abstract: A device for generating a torsional electromagnetic wave and an electric power system employing the same are disclosed. In accordance with the present invention, since the device for generating the torsional electromagnetic wave is electrically isolated from a power source unit providing a power source to a load, the device can be used regardless of the power supply system such as a single-phase electric system and a tri-phase electric system, and may be reduce power consumptions of devices using an induction motor such as an air conditioner and a refrigerator.

Abstract: Low frequency components are removed from an input signal, and transitions in the input signal are detected at a receiver input. A feedback loop restores the low frequency components at the input of the receiver.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: A device, system and method for generating alternating current (a/c) electricity directly from photovoltaic cells utilize an array of photovoltaic cell pairs that are each connected in anti-parallel to form an a/c junction. The system, device and method mechanically gradually exposes and shades photovoltaic cell pairs to sunlight to generate alternating current electricity at an a/c junction of the solar cell pairs. Gradually and alternately exposing and shading the two anti-parallel connected solar cells of each solar cell pair causes the amplitude and polarity of the electricity at the a/c junction to gradually rise and fall to produce alternating current electricity. The gradual, alternating exposure and shading of the two anti-parallel solar cells is accomplished by mechanically covering and exposing the solar cell pairs. This is efficiently accomplished by a rotating segmented disc positioned over an array of solar cell pairs.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: Provided is a portable power supply apparatus for generating microwave plasma, capable of minimizing a power reflected from a plasma generation apparatus and improving power consumption of the plasma generation apparatus by generating the plasma by using a microwave having a specific frequency, monitoring the power reflected from the plasma generation apparatus after the generation of the plasma, detecting a changed impedance matching condition, and correcting the frequency.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: High-voltage switch, in particular for a microwave generator, which includes a spark gap which breaks down in order to switch when a high voltage is applied provided is a plurality of parallel-connected spark gaps (12, 12a, 12b), each having at least one electrode (13, 13a, 13b) with a series-connected fuse (14, 14a, 14b) which is irreversibly destroyed when the respective spark gap (12, 12a, 12b) breaks down.

Abstract: An apparatus and a method for improving a power efficiency are disclosed. In accordance with the present invention, since the apparatus for improving a torsional electromagnetic wave is electrically isolated from a power source unit providing a power source to a load, the apparatus can be used regardless of the power supply system such as a single-phase electric system and a tri-phase electric system, and may be reduce power consumptions of devices using an induction motor such as an air conditioner and a refrigerator.

Abstract: A compact multi-cycle high power microwave generator and a method of using the generator to generate microwave signals is disclosed and claimed. The apparatus includes one or more charged transmission line sections. Each transmission line section includes a first conductor that is section-specific and a second conductor that is common to all of the sections. A switch is associated with each section, each switch being operatively connected to a respective one of the first conductors. The apparatus includes third, common conductor that is not charged and that is operatively connected to each of the first conductors through its respective switch. The apparatus further includes a load, with the second conductor, the third conductor, and the load being operatively connected. Thus, the number of section-specific conductors, the number of charged transmission line sections, and the number of switches are all equal. Engagement of the switches generates a multi-cycle microwave pulse.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: Respective pulsed power supplies for plasma opening switches each produce a first current and a second current during a power pulse and a difference between the first current and the second current during a terminal portion of the power pulse. The pulsed power supplies are initiated or adjusted in response to measured opening times of the plasma opening switches in order to minimize or eliminate a need for command triggered opening of the plasma opening switches. Command triggered opening may occur in real time for a shot as needed in response to asymmetry of opening times of the plasma opening switches in the array during the shot.

Abstract: The invention proposes a circuit arrangement for converting a DC voltage from a DC power supply into a pulsed voltage to operate or drive a load, for example, a DBD lamp. The circuit arrangement comprises a transformer having a primary winding and a secondary winding, a first controllable switch branch, a second controllable switch branch, and a control unit. The control unit is configured to control the first controllable switch branch and the second controllable switch branch to be alternately turned on so that at least part of the energy from the DC power supply is stored in the primary winding during each turn-on period of the first controllable switch branch and the second controllable switch branch, and to leave an idle time between the two adjacent turn-on periods so that at least part of the stored energy is transferred to the secondary winding to alternately generate a positive pulsed voltage during one idle time and a negative pulsed voltage during the next idle time.

Abstract: Disclosed is an apparatus for adaptively reducing electromagnetic waves that reduces electromagnetic waves generated from commercial power by changing a grounding point of the commercial power supplied to a home. The apparatus for reducing electromagnetic waves includes an electromagnetic wave generator, an electromagnetic wave detector, an impedance varying unit, and a controller. The electromagnetic wave generator is connected to a secondary coil terminal of an external transformer to generate electromagnetic waves. The electromagnetic wave detector generates detection signals corresponding to the electromagnetic waves generated from the electromagnetic wave generator, and the impedance varying unit varies the impedance for a grounding point in the electromagnetic wave generator.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: Pulse-generator circuits that permit independent control of pulse widths and the delays between successive pulses. In several embodiments, a pulse-generator subcircuit includes a transmission-line segment comprising first and second conductors, configured such that the first conductor is coupled to a first DC potential. The pulse-generator subcircuit further includes a terminating resistor coupled to a first end of the second conductor of the first transmission-line segment; this terminating resistor is matched to the characteristic impedance of the transmission-line segment. The pulse-generator subcircuit further includes first and second switches, controlled by first and second timing signals, respectively, and configured to selectively and independently connect respective first and second ends of the first conductor to a second DC potential.

Abstract: Methods, systems and devices for dissipating kinetic energy from a shock wave are provided herein. In one embodiment, a method for dissipating kinetic energy from a shock wave may include: applying a magnetic flux across a shock wave disposed within a channel, wherein the channel includes substantially constant dimensions as the shock wave propagates through the channel; transforming kinetic energy from the shock wave to electrical energy; applying a high potential electrode to the electrical energy; applying a low potential electrode to the electrical energy; and coupling an electrical load conductively with the high potential electrode and the low potential electrode to dissipate the kinetic energy from the shock wave.

Abstract: A first energy generating system comprises a ferromagnetic generator coupled to a voltage controlled switch. The ferromagnetic generator includes a ferromagnetic element generating a magnetic field and positioned within a pulse generating coil and near an explosive charge. Detonation of the explosive charge decreases the magnetic field and induces a pulse of electric energy in the pulse generating coil. When the magnitude of the electric energy reaches a certain level, the voltage controlled switch closes. A second energy generating system comprises a flux compression generator coupled to a voltage controlled switch. The flux compression generator includes a inductance coil generating a magnetic field within a metallic armature that includes an explosive charge. Detonation of the explosive charge changes the magnetic field and induces a pulse of electric energy in the inductance coil. When the magnitude of the electric energy reaches a certain level, the voltage controlled switch closes.

Abstract: The present invention provides a pulse dimming circuit and a method thereof. The pulse dimming circuit is compatible for both DC input signal and PWM input signal using only one circuit board, and includes a first input port, a second input port, a comparison signal generator, a comparator, a logic module, and a switch network electrically coupled to the second input port, an output terminal of the comparator, and an output terminal of the logic module.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: A compact multiple generator system offering high voltage, high repetition rate customizable output waveforms, including rectangular waveforms and variable pulse spacing.

Abstract: The present disclosure relates to a high-voltage pulse generator including a “frozen-wave” generation system for generating high-voltage pulses and a trigger system for triggering the pulses, the generation system including a first and a second photoconductor element, wherein the triggering system includes means for generating a laser light beam and means for splitting the laser beam into two laser beam fractions, each laser beam fraction being directed onto a photoconductor element of the generation system, the splitting means being capable of controlling the distribution of the respective powers of the two laser beam fractions as a function of the orientation of the polarization of the laser beam. The present disclosure also relates to a facility comprising multiple high-voltage pulse generators and electrooptic pump-probe equipment operating such a high-voltage pulse generator.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: Embodiments provide a circuit and a method for generating a pulse signal. The circuit includes a generating circuit configured to generate a first pulse signal, a branching circuit coupled to the generating circuit and configured to branch the first pulse signal into a second pulse signal and a third pulse signal, and a reflection element coupled to the branching circuit to reflect the second pulse signal. The circuit further includes a combining circuit, which is coupled to the reflection element and the branching circuit and is configured to combine the reflected second pulse signal and the third pulse signal to generate a fourth pulse signal.

Abstract: An inductive pulse forming network stores electrical energy delivered from an outside prime power supply in the electric field of a low-voltage, high-energy density network capacitor. Through timed actuation of a series of one or more switches, the energy stored in the electric field of the network capacitor is subsequently converted to electrical energy stored in the magnetic field of a network inductor. The energy stored in the network inductor supplies high-current, high-power electrical energy to drive an electromagnetic launcher such as a railgun.

Abstract: An energization control apparatus includes a control portion, a disconnection detecting portion, and a prohibiting portion. The control portion controls energization to a plurality of loads coupled in parallel. The disconnection detecting portion repeatedly or continuously determines whether a supply current to the plurality of loads is less than a threshold value when the control portion energizes the plurality of loads, and the disconnection detecting portion detects a disconnection of a part of the plurality of loads when the supply current is less than the threshold value. The prohibiting portion prohibits a disconnection detection by the disconnection detecting portion for a predetermined period since the control portion starts to energize the plurality of loads, and the prohibiting portion enables the disconnection detection by the disconnection detecting portion after the predetermined period elapses.

Abstract: A bipolar pulse generator is implemented in a simple structure while providing a high efficiency design having a relatively low total size, while still allowing access by fibers used to control a photoconductive switch that activates the generator. The bipolar pulse generator includes a stacked Blumlein generator structure with an additional transmission line connected to a load at its near end and short-circuited at its distal end. An extra transmission line is positioned between the Blumlein generator's structure and the load provides specified limited gap between positive and negative sub-pulses. The bipolar pulse generator further includes a bended Blumlein generator structure, in which an existing intrinsic “stray” transmission line is used to provide the bipolar pulse. Still further, bipolar pulse generator includes stepped transmission lines, with additional switches positioned between steps, which are charged by different voltages.

Abstract: The features of this invention allow construction and operation of a variety of high voltage, high repetition rated pulse generators of the Marx type that are switched with photon initiated semiconductor switches of the closing type. The photon initiated semiconductor switches can be constructed with bulk materials or in layered devices such as thyristors. Variations on the invention permit the formation of shaped high voltage pulses; particularly those that are nearly rectangular: with controlled rise and fall times, minimal or no overshoot, and minimal voltage ripple.

Abstract: A bipolar pulse generator includes two, two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Each conductor of a transmission line we define as a segment. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. This bipolar pulse generator may be implemented in a flat or a folded design. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch may be coupled between the embedded transmission line segment and another segment of the transmission line structure.

Abstract: Conductive segments (transmission line conductors) are positioned within a transmission line structure in order to generate multi-cycle microwave pulses. The conductor segments are switchably coupled to one or the other conductor of the transmission lines, inside the transmission line structure. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments, or successive groups of segments, into the transmission lines. The induced pulses travel uninterrupted along the transmission lines in a desired direction to the load. Efficiency of systems and energy delivered to the load in multi-section transmission lines is increased and/or maximized by adjusting the ratio of characteristic impedances associated with the transmission line conductor segments according to an optimum ratio.

Abstract: A method for controlling and supplying power to at least one electrical consumer that is connectable in a wired, electrically conductive fashion to an energy source is provided. In the method, electrical energy is transferred by an alternating voltage and control information for activating the at least one electrical consumer is transmitted to the electrical consumer by an angle modulation of the alternating voltage used for the power supply. The control information is transmitted in binary form by a frequency modulation, wherein individual binary values are depicted and transmitted by an associated predetermined frequency of the alternating voltage used for the power supply. Each binary value is transmitted by a plurality of oscillations of the alternating voltage.

Abstract: A ultrasound transmit pulse waveform generator for driving a piezoelectric transducer in medical ultrasound imaging, nondestructive testing (NDT) ultrasound imaging applications, includes a capacitor, switching programmable current sources, and a power amplifier.

Abstract: A method of generating an electrical pulse to an output load is disclosed. The method includes the steps of establishing a first voltage on a first electrical conductor throughout an electrical length of the first electrical conductor, initiating the propagation of a voltage step at a first end of a second conductor having an electrical length that is substantially the same as the electrical length of the first electrical conductor, reversing a polarity of the voltage step and shifting the first voltage on the first electrical conductor when the voltage step reaches the second end of the second electrical conductor, and maintaining a shifted first voltage on the first electrical conductor when the voltage step on the second conductor returns to the first end of the second conductor.

Abstract: The portable magnetic field stimulator of the present invention has a microcontroller which sets sinusoidal wave or pulse voltage signals of different frequency, intensity, duty cycle through a manipulation interface, and inputs the signals to a pulse type voltage/current conversion circuit or sinusoidal wave type voltage/current conversion circuit. Finally, the current is transported to the stimulating coil to produce sinusoidal wave or pulse wave magnetic field having direct current level with frequency 1˜2 kHz and with magnetic flux 1˜300 Gauss. Thereby, not only the variation of frequency can be controlled but also the other subtle parameters such as duty cycle, multi wave form switching are also able to be manipulated and set, and different stimulating wave form of sinusoidal wave or pulse can also be produced. In addition, it can be applied in diversified symptoms.

Abstract: In order to provide a pulse power supply device using regenerating magnetic energy stored in a discharge circuit to a capacitor so as to use it as next discharge energy and supplying a bipolar pulse current with high repetition, a bridge circuit is composed of four inverse-conductive semiconductor switches, a charged energy source capacitor is connected to a DC terminal of the bridge circuit, and an inductive load is connected to its AC terminal. A control signal is supplied to gates of the inverse-conductive semiconductor switches, and a control is made so that when a discharge current rises, is maintained, or is reduced, all the gates are turned off, and the magnetic energy of the electric current can be automatically regenerated to the energy source capacitor by a diode function of the switches. Further, a large current power supply is inserted into a discharge circuit so as to replenish energy loss due to discharge, thereby enabling high-repetition discharge.

Abstract: A system is disclosed for generating a rectangular pulse with a transmission line, the pulse having a duration of twice the electrical length of the line and a voltage of up to twice the charge voltage. The system includes a voltage source, a switching means, and an output circuit. The voltage source is for providing a voltage potential to a first conductor of a transmission line. The switching means is for controllable coupling the first conductor of the transmission line to a second conductor of the transmission line at a first end of the transmission line, with the second conductor of the transmission line being coupled to a fixed voltage potential at a second end of the transmission line. The output circuit is coupled to the first conductor of the transmission line for providing an output pulse to a load.

Abstract: A bipolar pulse generator includes a pair of two-conductor transmission lines coupled together with a load positioned between the two transmission lines. Two segments of one transmission line are charged and switchably coupled to two segments of the other transmission line to produce a bipolar pulse on the matched load. The generator may include two transmission line structures coupled together with a load positioned between each transmission line structures. The first transmission line structure may include a stepped transmission line and an embedded transmission line segment. A switch is coupled between the embedded transmission line segment and another segment of the transmission line structure. During operation, the first transmission line structure is charged to a potential with the switch in the open position and, when the switch is closed, the charge on the first transmission line structure together with the second transmission line structure generates a bipolar pulse on the matched load.

Abstract: A power modulator comprises a plurality of switched pulse generator sections (22), a power supply arrangement (10), and a transformer arrangement (30). A switch control (24) is connected to said plurality of switched pulse generator sections (22) for providing control signals for turning on and/or turning off them. The switch control (24) is arranged to provide control signals for turning on and/or turning off switched pulse generator sections of a first subset at a first time instant and to provide control signals for turning on and/or turning off switched pulse generator sections of a second subset at a second time instant, different from the first time instant: The second subset is different from the first subset.