NANOSECOND PULSER
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Accused Products
Abstract
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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Citations
40 Claims
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1-20. -20. (canceled)
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21. A pulse generator comprising:
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a driver stage comprising at least one of one or more IGBTs and one or more MOSFETs, the driver stage generates a first input waveform; a transformer stage coupled with the driver stage, the transformer stage including one or more transformers; a rectifier stage coupled with the transformer stage having stray inductance less than 1,000 nH; an output stage coupled with the rectifier stage, the output stage having a storage capacitor, the output stage outputting a first output pulse having a rise time less than 1,000 nanoseconds, a first output voltage greater than 2 kilovolts; and a sink stage coupled with the output stage, the sink stage comprising a fast switch, wherein energy stored in the storage capacitor is dumped when the fast switch is closed. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 38)
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30. A high voltage pulser comprising:
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a driver stage comprising at least one of one or more IGBTs and one or more MOSFETs, the driver stage generates a first input waveform; a transformer stage coupled with the driver stage, the transformer stage including one or more transformers; an output stage coupled with the transformer stage, the output stage having a storage capacitor, the output stage outputting a first output pulse; and a sink stage coupled with the output stage, the sink stage comprising a fast switch, wherein energy stored in the storage capacitor is dumped when the fast switch is closed. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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39. A method comprising:
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closing at least a first switch to provide a first input waveform to a transformer, the first switch coupled with a source and disposed on a primary side of the transformer; charging a storage capacitor disposed on the secondary side of the transformer with the first input waveform after passing through the transformer; opening the first switch after a first duration; opening a second switch, the second switch disposed on a secondary side of the transformer; outputting a first output pulse having a rise time less than 1,000 nanoseconds and a first output voltage, the first output pulse being provided by energy in the storage capacitor; closing the second switch causing energy stored in the storage capacitor to be dumped. - View Dependent Claims (40)
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Specification