David J Baretich

US Patent:

6366062, Apr 2, 2002

Filed:

Mar 8, 2001

Appl. No.:

09/802809

Inventors:

David F. Baretich - Lake Oswego OR
Gregory P. Wiegand - Poulsbo WA

Assignee:

MicroPlanet, Inc. - Edmonds WA

International Classification:

G05F 1613

US Classification:

323223, 323283

Abstract:

The method of the invention in one aspect involves electronic power control by varying the amplitude of an electrical power supply voltage, independent of frequency, whereby the output frequency will always be the same as the input frequency. An electrical circuit apparatus for accomplishing this function in a preferred embodiment is also disclosed herein. The preferred circuitry of this aspect of the invention uses four solid state switches, such as IGBTs, four diodes, an inductor, input and output filters and novel controlling circuitry. The controller apparatus and methods of the invention may be used to implement all otherwise conventional converter types, buck, boost, and inverting (and duals of these) versions to obtain different regulating characteristics, including galvanic isolation of the output from the input. The inventive methods and devices may be used in power factor correction, voltage and/or current harmonic filtering and neutralization, line and load conditioning, control of power transfer between two power grids, and programmable control of surges, sags, dropouts and most other voltage regulation problems.

US Patent:

20020080627, Jun 27, 2002

Filed:

Dec 5, 2001

Appl. No.:

10/006062

Inventors:

David Baretich - Lake Oswego OR, US
Gregory Wiegand - Poulsbo WA, US

International Classification:

H02M003/335

US Classification:

363/025000

Abstract:

An isolated power controller for regulating 0 to full voltage, wherein the output is fully regulated, the power is bi-directional, and the output of the IPC is fed into an LC averaging filter.

US Patent:

20030052658, Mar 20, 2003

Filed:

Feb 6, 2002

Appl. No.:

10/068287

Inventors:

David Baretich - Lake Oswego OR, US
Gregory Wiegand - Poulsbo WA, US

International Classification:

G05F001/40

US Classification:

323/284000

Abstract:

The method of the invention in one aspect involves electronic power control by varying the amplitude of an electrical power supply voltage, independent of frequency, whereby the output frequency will always be the same as the input frequency. An electrical circuit apparatus for accomplishing this function in a preferred embodiment is also disclosed herein. The preferred circuitry of this aspect of the invention uses four solid state switches, such as IGBT's, four diodes, an inductor, input and output filters and novel controlling circuitry. The controller apparatus and methods of the invention may be used to implement all otherwise conventional converter types, buck, boost, and inverting (and duals of these) versions to obtain different regulating characteristics, including galvanic isolation of the output from the input. The inventive methods and devices may be used in power factor correction, voltage and/or current harmonic filtering and neutralization, line and load conditioning, control of power transfer between two power grids, and programmable control of surges, sags, dropouts and most other voltage regulation problems.

US Patent:

62292889, May 8, 2001

Filed:

Feb 1, 1999

Appl. No.:

9/241831

Inventors:

David F. Baretich - Lake Oswego OR
Gregory P. Wiegand - Poulsbo WA

Assignee:

MicroPlanet Ltd. - Seattle WA

International Classification:

G05F 1613
G05F 144

US Classification:

323223

Abstract:

The method of the invention in one aspect involves electronic power control by varying the amplitude of an electrical power supply voltage, independent of frequency, whereby the output frequency will always be the same as the input frequency. An electrical circuit apparatus for accomplishing this function in a preferred embodiment is also disclosed herein. The preferred circuitry of this aspect of the invention uses four solid state switches, such as IGBT's, four diodes, an inductor, input and output filters and novel controlling circuitry. The controller apparatus and methods of the invention may be used to implement all otherwise conventional converter types, buck, boost, and inverting (and duals of these) versions to obtain different regulating characteristics, including galvanic isolation of the output from the input. The inventive methods and devices may be used in power factor correction, voltage and/or current harmonic filtering and neutralization, line and load conditioning, control of power transfer between two power grids, and programmable control of surges, sags, dropouts and most other voltage regulation problems.

US Patent:

54556376, Oct 3, 1995

Filed:

Sep 10, 1993

Appl. No.:

8/119750

Inventors:

William R. Kallman - Portland OR
Mark B. Roberts - Beaverton OR
David F. Baretich - Lake Oswego OR
Leonard M. Dorfman - Tigard OR
John F. Ahern - Beaverton OR

Assignee:

Comdisco, Inc. - Rosemont IL

International Classification:

G02C 710

US Classification:

351 44

Abstract:

A power and control system for micro-electronics is described, as for lightweight, battery-powered electrochromic (EC) eyewear. Preferably such system includes a primary, lithium-type cell and a secondary, sealed lead acid-type cell in a hybrid, power-sharing configuration capable of supplying the low-energy, high-current (pulse) drain requirements of microelectronics, e. g. a switchable EC lens. A switch-mode power supply controller manages the power-sharing load on the hybrid battery system such that the secondary cell is charged by the primary cell. The system is capable of meeting short-term pulse drain requirements of switching EC lenses from clear to fully darkened at an acceptably fast rate and long-term operating life requirements of approximately 1500 cycles. The invented lead acid-type battery preferably is elongate, of uniform, right-rectangular cross section and provides over 20 mA-hours' capacity and the invented lithium-type battery preferably also is elongate, of uniform, right-rectangular cross section and provides over 180 mA-hours' capacity, all in a tiny volume compatible with one or more volume-restricted spaces. Preferably, the lithium-type and lead acid-type batteries are of approximately equal form factor and volume, for symmetric placement thereof in a void within either temple.

US Patent:

54556384, Oct 3, 1995

Filed:

Sep 10, 1993

Appl. No.:

8/120035

Inventors:

William R. Kallman - Portland OR
Mark B. Roberts - Beaverton OR
David F. Baretich - Lake Oswego OR
Leonard M. Dorfman - Tigard OR
John F. Ahern - Beaverton OR

Assignee:

Comdisco, Inc. - Rosemont IL

International Classification:

G02C 710

US Classification:

351 44

Abstract:

A power and control system for micro-electronics is described, as for lightweight, battery-powered electrochromic (EC) eyewear. Preferably such system includes a primary, lithium-type cell and a secondary, sealed lead acid-type cell in a hybrid, power-sharing configuration capable of supplying the low-energy, high-current (pulse) drain requirements of microelectronics, e. g. a switchable EC lens. A switch-mode power supply controller manages the power-sharing load on the hybrid battery system such that the secondary cell is charged by the primary cell. The system is capable of meeting short-term pulse drain requirements of switching EC lenses from clear to fully darkened at an acceptably fast rate and long-term operating life requirements of approximately 1500 cycles. The invented lead acid-type battery preferably is elongate, of uniform, right-rectangular cross section and provides over 20 mA-hours' capacity and the invented lithium-type battery preferably also is elongate, of uniform, right-rectangular cross section and provides over 180 mA-hours' capacity, all in a tiny volume compatible with one or more volume-restricted spaces. Preferably, the lithium-type and lead acid-type batteries are of approximately equal form factor and volume, for symmetric placement thereof in a void within either temple.

US Patent:

59007206, May 4, 1999

Filed:

Oct 2, 1997

Appl. No.:

8/940044

Inventors:

William R. Kallman - Portland OR
Mark B. Roberts - Beaverton OR
David F. Baretich - Lake Oswego OR

International Classification:

H02J 732
G02G 710

US Classification:

320167

Abstract:

A power and control system for micro-electronics is described, as for lightweight, battery-powered electrochromic (EC) eyewear. Preferably such system includes a primary, lithium-type cell and a secondary, sealed lead acid-type cell in a hybrid, power-sharing configuration capable of supplying the low-energy, high-current (pulse) drain requirements of microelectronics, e. g. a switchable EC lens. A switch-mode power supply controller manages the power-sharing load on the hybrid battery system such that the secondary cell is charged by the primary cell. The system is capable of meeting short-term pulse drain requirements of switching EC lenses from clear to fully darkened at an acceptably fast rate and long-term operating life requirements of approximately 1500 cycles. The invented lead acid-type battery preferably is elongate, of uniform, right-rectangular cross section and provides over 20 mA-hours' capacity and the invented lithium-type battery preferably also is elongate, of uniform, right-rectangular cross section and provides over 180 mA-hours' capacity, all in a tiny volume compatible with one or more volume-restricted spaces. Preferably, the lithium-type and lead acid-type batteries are of approximately equal form factor and volume, for symmetric placement thereof in a void within either temple.

US Patent:

57479720, May 5, 1998

Filed:

Jan 11, 1995

Appl. No.:

8/371512

Inventors:

David F. Baretich - Lake Oswego OR
Gregory P. Wiegand - Poulsbo WA

Assignee:

MicroPlanet Ltd. - Poulsbo WA

International Classification:

G05F 1613
G05F 144

US Classification:

323223

Abstract:

The method of the invention in one aspect involves electronic power control by varying the amplitude of an electrical power supply voltage, independent of frequency, whereby the output frequency will always be the same as the input frequency. An electrical circuit apparatus for accomplishing this function in a preferred embodiment is also disclosed herein. The preferred circuitry of this aspect of the invention uses four solid state switches, such as IGBT's, four diodes, an inductor, input and output filters and novel controlling circuitry. The controller apparatus and methods of the invention may be used to implement all otherwise conventional converter types, buck, boost, and inverting (and duals of these) versions to obtain different regulating characteristics, including galvanic isolation of the output from the input. The inventive methods and devices may be used in power factor correction, voltage and/or current harmonic filtering and neutralization, line and load conditioning, control of power transfer between two power grids, and programmable control of surges, sags, dropouts and most other voltage regulation problems.