US 12,348,228 B2
Bipolar high voltage pulser
Alex Henson, Seattle, WA (US); Kevin Muggli, Mountlake Terrace, WA (US); Timothy Ziemba, Bainbridge Island, WA (US); and Kenneth Miller, Seattle, WA (US)
Assigned to EHT Ventures LLC, Seattle, WA (US)
Filed by EHT Ventures, LLC, Seattle, WA (US)
Filed on Nov. 16, 2023, as Appl. No. 18/512,002.
Application 18/512,002 is a continuation of application No. 17/853,891, filed on Jun. 29, 2022, granted, now 11,824,542.
Prior Publication US 2024/0088877 A1, Mar. 14, 2024
Int. Cl. H03K 3/57 (2006.01); H02M 3/07 (2006.01)
CPC H03K 3/57 (2013.01) [H02M 3/07 (2013.01)] 22 Claims
OG exemplary drawing
 
1. 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.