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公开(公告)号:US09865426B2
公开(公告)日:2018-01-09
申请号:US15056330
申请日:2016-02-29
Applicant: MKS Instruments, Inc.
Inventor: Ken Tran , Feng Tian , Xing Chen , Franklin Lee
IPC: C01B13/11 , H01J37/248
CPC classification number: H01J37/248 , C01B13/115 , C01B2201/90
Abstract: Improvements in the supply of high-frequency electrical power to ozone-producing cells can be accomplished using the systems and techniques described herein. Application of a DC-DC converter operating at a switching frequency substantially greater than a load frequency, supports generation of a high-voltage AC for powering such cells, while allowing for reductions in component size and reductions in a quality factor of a load tuning circuit. Controllable power inverters used in obtaining one or more of the switching and load frequencies can be controlled using feedback techniques to provide stable, high-quality power to ozone-producing cells under variations in one or more of externally supplied power and load conditions. An inrush protection circuit can also be provided to selectively introduce a current-limiting resistance until an input DC bus has been sufficiently initialized as determined by measurements obtained from the DC bus. The current limiting resistance can be a positive-temperature coefficient thermistor.
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公开(公告)号:US20170213704A1
公开(公告)日:2017-07-27
申请号:US15484072
申请日:2017-04-10
Applicant: MKS Instruments, Inc.
Inventor: Xing Chen , Ilya Pokidov , Feng Tian , Ken Tran , David Lam , Kevin W. Wenzel
CPC classification number: H01J37/32449 , B01D53/323 , B01D53/76 , B01D2257/2064 , H01J37/32339 , H01J37/32357 , H01J37/32458 , H01J37/32651 , H01J37/32669 , H01J37/32844 , H01J37/32935 , H01J2237/3321 , H01J2237/334 , H05H1/46 , H05H2001/4667 , H05H2245/121 , Y02C20/30
Abstract: An apparatus for abatement of gases is provided. The apparatus includes a toroidal plasma chamber having a plurality of inlets and an outlet, and at least one chamber wall. One or more magnetic cores are disposed relative to the toroidal plasma chamber. The plasma chamber confines a toroidal plasma. A second gas inlet is positioned on the toroidal plasma chamber between a first gas inlet and the gas outlet at a distance d from the gas outlet, such that a toroidal plasma channel volume between the first gas inlet and the second gas inlet in the is substantially filled by the inert gas, the distance d based on a desired residence time of the gas to be abated.
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公开(公告)号:US20160181063A1
公开(公告)日:2016-06-23
申请号:US15056330
申请日:2016-02-29
Applicant: MKS Instruments, Inc.
Inventor: Ken Tran , Feng Tian , Xing Chen , Franklin Lee
IPC: H01J37/248 , C01B13/11
CPC classification number: H01J37/248 , C01B13/115 , C01B2201/90
Abstract: Improvements in the supply of high-frequency electrical power to ozone-producing cells can be accomplished using the systems and techniques described herein. Application of a DC-DC converter operating at a switching frequency substantially greater than a load frequency, supports generation of a high-voltage AC for powering such cells, while allowing for reductions in component size and reductions in a quality factor of a load tuning circuit. Controllable power inverters used in obtaining one or more of the switching and load frequencies can be controlled using feedback techniques to provide stable, high-quality power to ozone-producing cells under variations in one or more of externally supplied power and load conditions. An inrush protection circuit can also be provided to selectively introduce a current-limiting resistance until an input DC bus has been sufficiently initialized as determined by measurements obtained from the DC bus. The current limiting resistance can be a positive-temperature coefficient thermistor.
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公开(公告)号:US08912835B2
公开(公告)日:2014-12-16
申请号:US14151321
申请日:2014-01-09
Applicant: MKS Instruments, Inc.
Inventor: Siddarth Nagarkatti , Feng Tian , David Lam , Abdul Rashid , Souheil Benzerrouk , Ilya Bystryak , David Menzer , Jack J. Schuss , Jesse E. Ambrosina
CPC classification number: H03K5/01 , H03F3/189 , H03F3/217 , H03F2200/105 , H03F2200/375 , H03F2200/387 , H03G3/3047
Abstract: A method for controlling pulsed power that includes measuring a first pulse of power from a power amplifier to obtain data. The method also includes generating a first signal to adjust a second pulse of delivered power, the first signal correlated to the data to minimize a power difference between a power set point and a substantially stable portion of the second pulse. The method also includes generating a second signal to adjust the second pulse of delivered power, the second signal correlated to the data to minimize an amplitude difference between a peak of the second pulse and the substantially stable portion of the second pulse.
Abstract translation: 一种用于控制脉冲功率的方法,包括从功率放大器测量第一功率脉冲以获得数据。 该方法还包括产生第一信号以调整输出功率的第二脉冲,第一信号与数据相关,以最小化功率设定点与第二脉冲的基本稳定部分之间的功率差。 该方法还包括产生第二信号以调整传递功率的第二脉冲,第二信号与数据相关,以最小化第二脉冲的峰值与第二脉冲的基本上稳定的部分之间的幅度差异。
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公开(公告)号:US20180233333A1
公开(公告)日:2018-08-16
申请号:US15952168
申请日:2018-04-12
Applicant: MKS Instruments, Inc.
Inventor: Xing Chen , Ilya Pokidov , Feng Tian , Ken Tran , David Lam , Kevin W. Wenzel
CPC classification number: H01J37/32449 , B01D53/323 , B01D53/76 , B01D2257/2064 , H01J37/32339 , H01J37/32357 , H01J37/32458 , H01J37/32651 , H01J37/32669 , H01J37/32844 , H01J37/32935 , H01J2237/3321 , H01J2237/334 , H05H1/46 , H05H2001/4667 , H05H2245/121 , Y02C20/30
Abstract: An apparatus for abatement of gases is provided. The apparatus includes a toroidal plasma chamber having a plurality of inlets and an outlet, and at least one chamber wall. One or more magnetic cores are disposed relative to the toroidal plasma chamber. The plasma chamber confines a toroidal plasma. A second gas inlet is positioned on the toroidal plasma chamber between a first gas inlet and the gas outlet at a distance d from the gas outlet, such that a toroidal plasma channel volume between the first gas inlet and the second gas inlet in the is substantially filled by the inert gas, the distance d based on a desired residence time of the gas to be abated.
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公开(公告)号:US09991098B2
公开(公告)日:2018-06-05
申请号:US15484072
申请日:2017-04-10
Applicant: MKS Instruments, Inc.
Inventor: Xing Chen , Ilya Pokidov , Feng Tian , Ken Tran , David Lam , Kevin W. Wenzel
CPC classification number: H01J37/32449 , B01D53/323 , B01D53/76 , B01D2257/2064 , H01J37/32339 , H01J37/32357 , H01J37/32458 , H01J37/32651 , H01J37/32669 , H01J37/32844 , H01J37/32935 , H01J2237/3321 , H01J2237/334 , H05H1/46 , H05H2001/4667 , H05H2245/121 , Y02C20/30
Abstract: An apparatus for abatement of gases is provided. The apparatus includes a toroidal plasma chamber having a plurality of inlets and an outlet, and at least one chamber wall. One or more magnetic cores are disposed relative to the toroidal plasma chamber. The plasma chamber confines a toroidal plasma. A second gas inlet is positioned on the toroidal plasma chamber between a first gas inlet and the gas outlet at a distance d from the gas outlet, such that a toroidal plasma channel volume between the first gas inlet and the second gas inlet in the is substantially filled by the inert gas, the distance d based on a desired residence time of the gas to be abated.
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公开(公告)号:US09630142B2
公开(公告)日:2017-04-25
申请号:US14212398
申请日:2014-03-14
Applicant: MKS Instruments, Inc.
Inventor: Xing Chen , Ilya Pokidov , Feng Tian , Ken Tran , David Lam , Kevin W. Wenzel
CPC classification number: H01J37/32449 , B01D53/323 , B01D53/76 , B01D2257/2064 , H01J37/32339 , H01J37/32357 , H01J37/32458 , H01J37/32651 , H01J37/32669 , H01J37/32844 , H01J37/32935 , H01J2237/3321 , H01J2237/334 , H05H1/46 , H05H2001/4667 , H05H2245/121 , Y02C20/30
Abstract: An apparatus for abatement of gases is provided. The apparatus includes a toroidal plasma chamber having a plurality of inlets and an outlet, and at least one chamber wall. One or more magnetic cores are disposed relative to the toroidal plasma chamber. The plasma chamber confines a toroidal plasma. A second gas inlet is positioned on the toroidal plasma chamber between a first gas inlet and the gas outlet at a distance d from the gas outlet, such that a toroidal plasma channel volume between the first gas inlet and the second gas inlet in the is substantially filled by the inert gas, the distance d based on a desired residence time of the gas to be abated.
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公开(公告)号:US09648716B2
公开(公告)日:2017-05-09
申请号:US14843412
申请日:2015-09-02
Applicant: MKS INSTRUMENTS, INC.
CPC classification number: H05H1/24 , H01J37/32082 , H01J37/32174 , H02M5/293 , H02M5/297 , H02M7/537 , Y02B70/145
Abstract: A power system for a reactive gas generator can include a direct three phase inverter. A resonant tank can further be included to receive a square wave output of the direct three phase inverter and provide a sine wave output. The power system can include an inverter controller that turns on and off selected switches of the direct three phase inverter based on states of the three phases of a three phase AC power supply, where a switch is turned on with an adaptive ON time and a modulated OFF time depending on a desired output power.
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