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公开(公告)号：US11456155B2
公开(公告)日：2022-09-27
申请号：US17118831
申请日：2020-12-11
摘要： A high voltage switch comprising: a high voltage power supply providing power greater than about 5 kV; a control voltage power source; a plurality of switch modules arranged in series with respect to each other each of the plurality of switch modules configured to switch power from the high voltage power supply, and an output configured to output a pulsed output signal having a voltage greater than the rating of any switch of the plurality of switch modules, a pulse width less than 2 μs, and at a pulse frequency greater than 10 kHz.
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公开(公告)号：US20220224317A1
公开(公告)日：2022-07-14
申请号：US17707902
申请日：2022-03-29
摘要： Some embodiments of the invention include a pre-pulse switching system. The pre-pulsing switching system may include: a power source configured to provide a voltage greater than 100 V; a pre-pulse switch coupled with the power source and configured to provide a pre-pulse having a pulse width of Tpp; and a main switch coupled with the power source and configured to provide a main pulse such that an output pulse comprises a single pulse with negligible ringing. The pre-pulse may be provided to a load by closing the pre-pulse switch while the main switch is open. The main pulse may be provided to the load by closing the main switch after a delay Tdelay after the pre-pulse switch has been opened.
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公开(公告)号：US10985740B2
公开(公告)日：2021-04-20
申请号：US16457791
申请日：2019-06-28
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：US20210066042A1
公开(公告)日：2021-03-04
申请号：US17098207
申请日：2020-11-13
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：US20190277804A1
公开(公告)日：2019-09-12
申请号：US16297352
申请日：2019-03-08
发明人： James R. Prager , Timothy M. Ziemba , Kenneth E. Miller , Iia Slobodov , Paul Melnik , Connor Liston , Kevin Muggli , TaiSheng Yeager , John G. Carscadden
IPC分类号： G01N27/90
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：US10382022B2
公开(公告)日：2019-08-13
申请号：US15921650
申请日：2018-03-15
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：US20190157044A1
公开(公告)日：2019-05-23
申请号：US16250765
申请日：2019-01-17
CPC分类号： H01J37/32174 , H01J37/32091 , H01J37/32146 , H01J37/32348 , H01J2237/2485 , H03K3/021 , H03K3/53 , H03K3/57
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：US20180331655A1
公开(公告)日：2018-11-15
申请号：US15590091
申请日：2017-05-09
IPC分类号： H03B9/14
摘要： A high frequency electromagnetic radiation generation device is disclosed that includes a high voltage input, a nonlinear transmission line, an antenna, and a pulse recirculating circuit. In some embodiments, the high voltage input may be configured to receive electrical pulses having a first peak voltage that is greater than 5 kV, and/or may be electrically coupled with the nonlinear transmission line. The antenna may be electrically coupled with the nonlinear transmission line and/or may radiate electromagnetic radiation at a frequency greater than 100 MHz about a voltage greater than 5 kV. The pulse recirculating may be electrically coupled with the high voltage input and the antenna. The pulse recirculating circuit may include a diode; a low pass filter; and a delay line. In some embodiments, unradiated energy from the antenna is directed through the pulse recirculating circuit to the nonlinear transmission line with a delay of less than 100 ns.
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公开(公告)号：US20180253570A1
公开(公告)日：2018-09-06
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
CPC分类号： G06G7/14 , G06G7/02 , H01F27/2823 , 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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公开(公告)号：US20180226896A1
公开(公告)日：2018-08-09
申请号：US15889586
申请日：2018-02-06
发明人： Kenneth E. Miller , James R. Prager , Timothy M. Ziemba , John G. Carscadden , Ilia Slobodov , Alex Patrick Henson
CPC分类号： H02M3/33592 , H02M3/3376 , H02M2001/0003 , H02M2001/0058 , H02M2007/4815 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491 , Y02P80/112
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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