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公开(公告)号：US20240055227A1
公开(公告)日：2024-02-15
申请号：US18321724
申请日：2023-05-22
CPC分类号： H01J37/32146 , H01J37/32128 , H03K3/017 , H03K3/57 , H01J2237/2485
摘要： 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.
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2.发明授权公开(公告)号：US11860126B2
公开(公告)日：2024-01-02
申请号：US17493814
申请日：2021-10-04
发明人： James R. Prager , Timothy M. Ziemba , Kenneth E. Miller , Ilia Slobodov , Paul Melnik , Connor Liston , Kevin Muggli , TaiSheng Yeager , John G. Carscadden
IPC分类号： G01N27/90 , G01N27/9013
CPC分类号： G01N27/9006 , G01N27/906 , G01N27/9013
摘要： Some embodiments of the invention may include an eddy current nondestructive evaluation device. The eddy current nondestructive evaluation device may include a rotating body; a motor coupled with the rotating body such that the motor rotates the rotating body; a permanent magnet coupled with the rotating body; a pickup coil coupled with the rotating body; and an integrator circuit electrically coupled with the pickup coil that integrates a voltage from the pickup coil to produce integrated voltage data.
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公开(公告)号：US20230093824A1
公开(公告)日：2023-03-30
申请号：US18053249
申请日：2022-11-07
发明人： Kenneth E. Miller , James R. Prager , Timothy M. Ziemba , John G. Carscadden , Ilia Slobodov , Alex Patrick Henson
摘要： Some embodiments may include a nanosecond pulser comprising a plurality of solid state switches; a transformer having a stray inductance, Ls, a stray capacitance, Cs, and a turn ratio n; and a resistor with a resistance, R, in series between the transformer and the switches. In some embodiments, the resonant circuit produces a Q factor according to Q = 1 R L s C s , and the nanosecond pulser produces an output voltage Vout from an input voltage Vin, according to Vout=QnVin.
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公开(公告)号：US11542927B2
公开(公告)日：2023-01-03
申请号：US15146615
申请日：2016-05-04
发明人： Timothy M. Ziemba , James R. Prager , John G. Carscadden , Kenneth E. Miller , Ilia Slobodov , Julian F. Picard , Akel Hashim
摘要： Some embodiments of the invention include a thruster system comprising a thruster and a pulsing power supply. The thruster may include a gas inlet port; a plasma jet outlet; and a first electrode. In some embodiments, the pulsing power supply may provide an electrical potential to the first electrode with a pulse repetition frequency greater than 10 kHz, a voltage greater than 5 kilovolts. In some embodiments, the pressure downstream from the thruster can be less than 10 Torr. In some embodiments, when a plasma is produced within the thruster by energizing a gas flowing into the thruster through the gas inlet port, the plasma is expelled from the thruster through the plasma jet outlet.
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公开(公告)号：US20210351767A1
公开(公告)日：2021-11-11
申请号：US17223004
申请日：2021-04-06
摘要： A nanosecond pulser is disclosed. In some embodiments, the nanosecond pulser may include one or more switch circuits including one or more solid state switches, a transformer, and an output. In some embodiments, the transformer may include a first transformer core, a first primary winding wound at least partially around a portion of the first transformer core, and a secondary winding wound at least partially around a portion of the first transformer core. In some embodiments, each of the one or more switch circuits are coupled with at least a portion of the first primary winding. In some embodiments, the output may be electrically coupled with the secondary winding and outputs electrical pulses having a peak voltage greater than about 1 kilovolt and a rise time of less than 150 nanoseconds or less than 50 nanoseconds.
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公开(公告)号：US10734906B2
公开(公告)日：2020-08-04
申请号：US16250157
申请日：2019-01-17
摘要： A pulse generator is disclosed that includes at least the following stages a driver stage, a transformer stage, a rectifier stage, and an output stage. The driver stage may include at least one solid state switch such as, for example, of one or more IGBTs and/or one or more MOSFETs. The driver stage may also have a stray inductance less than 1,000 nH. The transformer stage may be coupled with the driver stage and/or with a balance stage and may include one or more transformers. The rectifier stage may be coupled with the transformer stage and may have a stray inductance less than 1,000 nH. The output stage may be coupled with the rectifier stage. The output stage may output a signal pulse with a voltage greater than 2 kilovolts and a frequency greater than 5 kHz. In some embodiments, the output stage may be galvanically isolated from a reference potential.
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公开(公告)号：US20200014378A1
公开(公告)日：2020-01-09
申请号：US16513705
申请日：2019-07-17
IPC分类号： H03K17/04 , H03K17/567 , H01H9/54 , H01L23/498 , H01L23/64 , H01L29/739
摘要： Embodiments of the invention provide IGBT circuit modules with increased efficiencies. These efficiencies can be realized in a number of ways. In some embodiments, the gate resistance and/or voltage can be minimized. In some embodiments, the IGBT circuit module can be switched using an isolated receiver such as a fiber optic receiver. In some embodiments, a single driver can drive a single IGBT. And in some embodiments, a current bypass circuit can be included. Various other embodiments of the invention are disclosed.
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公开(公告)号：US10460911B2
公开(公告)日：2019-10-29
申请号：US16178538
申请日：2018-11-01
摘要： Some embodiments include a high voltage, high frequency switching circuit. The switching circuit may include a high voltage switching power supply that produces pulses having a voltage greater than 1 kV and with frequencies greater than 10 kHz and an output. The switching circuit may also include a resistive output stage electrically coupled in parallel with the output and between the output stage and the high voltage switching power supply, the resistive output stage comprising at least one resistor that discharges a load coupled with the output. In some embodiments, the resistive output stage may be configured to discharge over about 1 kilowatt of average power during each pulse cycle. In some embodiments, the output can produce a high voltage pulse having a voltage greater than 1 kV and with frequencies greater than 10 kHz with a pulse fall time less than about 400 ns.
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公开(公告)号：US10373755B2
公开(公告)日：2019-08-06
申请号：US15365094
申请日：2016-11-30
摘要： A high-voltage transformer is disclosed. The high-voltage transformer includes a transformer core; at least one primary winding wound once or less than once around the transformer core; a secondary winding wound around the transformer core a plurality of times; an input electrically coupled with the primary windings; and an output electrically coupled with the secondary windings that provides a voltage greater than 1,1200 volts. In some embodiments, the high-voltage transformer has a stray inductance of less than 30 nH as measured on the primary side and the transformer has a stray capacitance of less than 100 pF as measured on the secondary side.
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公开(公告)号：US10282567B2
公开(公告)日：2019-05-07
申请号：US15973519
申请日：2018-05-07
发明人： Kenneth E. Miller , James R. Prager , Timothy M. Ziemba , John G. Carscadden , Christopher Bowman , Ilia Slobodov
IPC分类号： G01R21/00 , G06F9/00 , H04L29/08 , H04W52/02 , G06G7/14 , G06G7/02 , H01F27/28 , H01F30/06 , H03K3/53
摘要： A high voltage inductive adder is disclosed. In some embodiments, the high voltage inductive adder comprising a first adder circuit and a second adder circuit. The first adder circuit including a first source; a first switch electrically coupled with the first source; a first transformer core; and a first plurality of primary windings wound about the first transformer core and electrically coupled with the first switch. The second adder circuit including a second source; a second switch electrically coupled with the second source; a second transformer core; and a second plurality of primary windings wound about the second transformer core and electrically coupled with the second switch. The high voltage inductive adder comprising one or more secondary windings wound around both the first transformer core and the second transformer core and an output coupled with the plurality of secondary windings.
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