Joseph Yampolsky

7307362, Dec 11, 2007

Jan 24, 2003

10/351644

Joseph Yampolsky - Torrance CA, US

H03K 3/53
H03K 3/021

307108, 307110, 323208

A solid-state high-voltage pulse generator based on a three-phase chopper capacitance charger is described. In a first phase, an intermediate capacitor is resonance-charged via a diode. In a second phase, the intermediate capacitor is discharged to the load through one or more solid-state switches. In a third phase, the energy remaining in the intermediate capacitor is returned to a power-supply filter capacitor. In one embodiment, the three-phase chopper includes an intermediate capacitor that is charged by first and fourth branches of a bridge and discharged by second and third branches of a bridge. In one embodiment, each branch of the bridge includes a diode in series with an inductor. In one embodiment, a composite solid-state switch connects the intermediate capacitor to a primary winding of an output transformer such that the intermediate capacitor discharges through the primary winding. In one embodiment, a secondary winding of the output transformer is provided to an output load. In one embodiment, the output load is a reactive load.

7319281, Jan 15, 2008

Jan 26, 2005

11/043681

Joseph Yampolsky - Torrance CA, US

Sparktronics, Inc. - Torrance CA

H03K 3/00

307106

A high-voltage pulse generator to generate short high-voltage pulses is described. In one embodiment, a multi-stage Blumlein is used to form relatively short relatively high-voltage pulses. In one embodiment, the multi-stage Blumlein is based on transmissions lines and provides short pulses to a desired load. In one embodiment, repetition rates on the order of 1 kHz-5 kHz are be achieved due to relatively small charging time and relatively small charging inductances. In one embodiment, water as a capacitor dielectric provides a working field strength of 150-200 kv/cm. In one embodiment, the multi-stage Blumlein is used to provide short pulses for a cold cathode as a source of electrons.

20020140464, Oct 3, 2002

May 3, 2001

09/848559

Joseph Yampolsky - Torrance CA, US
Martin Gundersen - San Gabriel CA, US

H03K003/00

327/100000

A solid-state pulse generator using a split magnetic core transformer is described. In one embodiment, the solid-state drive circuit uses MOSFETs switching a blumlein to produce a desired input pulses in a primary winding of the split magnetic core. The pulse length is determined primarily by the characteristics of the blumlein and the split core transformer. The “on” time of the solid-state devices can exceed the output pulse length, thereby reducing the chance of damaging voltage spikes. The use of a split magnetic core allows several solid-state drive circuits to be used in parallel to produce a single output pulse. In one embodiment, each solid-state drive circuit drives a separate single-turn primary winding of a split magnetic core transformer. In one embodiment, each core of the split core transformer has one primary winding. The separate cores of the split core transformer are provided with a single secondary winding that couples all of the cores to produce a relatively high-voltage output pulse with relatively few turns in the secondary winding.

20080238211, Oct 2, 2008

Dec 7, 2007

11/952806

Joseph Yampolsky - Torrance CA, US

H03K 3/021

307108

A solid-state high-voltage pulse generator based on a three-phase chopper capacitance charger is described. In a first phase, an intermediate capacitor is resonance-charged via a diode. In a second phase, the intermediate capacitor is discharged to the load through one or more solid-state switches. In a third phase, the energy remaining in the intermediate capacitor is returned to a power-supply filter capacitor. In one embodiment, the three-phase chopper includes an intermediate capacitor that is charged by first and fourth branches of a bridge and discharged by second and third branches of a bridge. In one embodiment, each branch of the bridge includes a diode in series with an inductor. In one embodiment, a composite solid-state switch connects the intermediate capacitor to a primary winding of an output transformer such that the intermediate capacitor discharges through the primary winding. In one embodiment, a secondary winding of the output transformer is provided to an output load. In one embodiment, the output load is a reactive load. In one embodiment, the output load is a capacitive load.