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US 12,348,228 B2Granted
Bipolar high voltage pulser
AssigneeEHT Ventures LLC
InventorsAlex Henson, Kevin Muggli, Timothy Ziemba, Kenneth Miller
Life of this patent
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Abstract
A bipolar high voltage bipolar pulsing power supply is disclosed that can produce high voltage bipolar pulses with a positive high voltage pulse greater than about 2 kV followed by a negative high voltage pulse less than about −2 kV with a positive to negative dwell period between the positive high voltage pulse and the negative high voltage pulse. A high voltage bipolar pulsing power supply, for example, can reproduce high voltage pulses with a pulse repetition rate greater than about 10 kHz.
Claims22
A high voltage bipolar pulsing power supply comprising:
- a DC source;
- an energy storage capacitor coupled with the DC source;
- a first high voltage switch electrically coupled with the DC source and the energy storage capacitor;
- a first diode arranged across the first high voltage switch;
- a second high voltage switch electrically coupled with the DC source and the energy storage capacitor;
- a second diode arranged across the second high voltage switch;
- a third high voltage switch arranged in series between the first high voltage switch and ground;
- a third diode arranged across the third high voltage switch;
- a fourth high voltage switch arranged in series between the second high voltage switch and ground;
- a fourth diode arranged across the fourth high voltage switch;
- and
- an output having a first lead electrically coupled between the first high voltage switch and the third high voltage switch and a second lead electrically coupled between the second high voltage switch and the fourth high voltage switch, the output providing a plurality of high voltage pulses where each pulse of the plurality of pulses includes a positive pulse having a voltage greater than about 500 volts and a negative pulse having a negative voltage less than about 500 volts, and wherein the output produces a waveform having a repeating pattern of a plurality of positive pulses followed by one or more negative pulses.
9 more elements
A high voltage, multilevel, bipolar pulsing power supply comprising:
- a first DC source;
- a first energy storage capacitor coupled with the first DC source;
- a diode having an anode and a cathode, the anode electrically coupled with the first DC source and the first energy storage capacitor;
- a first high voltage switch electrically coupled with the cathode of the first diode;
- a first diode arranged across the first high voltage switch;
- a second high voltage switch electrically coupled with the cathode of the first diode and ground;
- a second diode arranged across the second high voltage switch;
- a third high voltage switch arranged in series between the first high voltage switch
- a third diode arranged across the third high voltage switch;
- a fourth high voltage switch arranged in series between the second high voltage switch and ground;
- a fourth diode arranged across the fourth high voltage switch;
- and
- an output having a first lead electrically coupled between the first high voltage switch and the third high voltage switch and a second lead electrically coupled between the second high voltage switch and the fourth high voltage switch, and wherein the output produces a waveform having multilevel positive pulses followed by a negative pulse.
10 more elements
A high voltage bipolar pulsing power supply comprising:
- a DC source;
- an energy storage capacitor coupled with the DC source;
- a diode having an anode and a cathode, the anode electrically coupled with the DC source and the energy storage capacitor;
- a first high voltage switch electrically coupled with the cathode of the diode;
- a first diode arranged across the first high voltage switch;
- a first tail sweeper switch and a first tail sweeper resistor arranged in series across the first high voltage switch;
- a second high voltage switch electrically coupled with the cathode of the diode;
- a second diode arranged across the second high voltage switch;
- a second tail sweeper switch and a second tail sweeper resistor arranged in series across the first high voltage switch;
- a third high voltage switch arranged in series between the first high voltage switch and ground;
- a third diode arranged across the third high voltage switch;
- a third tail sweeper switch and a third tail sweeper resistor arranged in series across the first high voltage switch;
- a fourth high voltage switch arranged in series between the second high voltage switch and ground;
- a fourth diode arranged across the fourth high voltage switch;
- a fourth tail sweeper switch and a fourth tail sweeper resistor arranged in series across the first high voltage switch;
- and
- an output having a first lead electrically coupled between the first high voltage switch and the third high voltage switch and a second lead electrically coupled between the second high voltage switch and the fourth high voltage switch, the output providing a plurality of high voltage pulses where each pulse of the plurality of pulses includes a positive pulse having a voltage greater than about 500 volts and a negative pulse having a negative voltage less than about −500 volts, and wherein the output produces a waveform having multilevel positive pulses followed by a negative pulse.
14 more elements
Dependencies are inferred from the claim text.