Satish L Prabhakaran

US Patent:

7365550, Apr 29, 2008

Filed:

Dec 20, 2005

Appl. No.:

11/312904

Inventors:

Charles Roger Sullivan - West Lebanon NH, US
Satish Prabhakaran - West Lebanon NH, US

Assignee:

The Trustees of Dartmouth College - Hanover NH

International Classification:

G01R 31/26

US Classification:

324754, 3241581

Abstract:

A test fixture couples with a test instrument to measure impedance of a device. An upper layer of the test fixture has (a) a first and a second solder pad for electrical connection to the device, (b) a first, second, third and fourth multi-solder pad for electrical connection to four connectors, (c) a first conductor track for connecting the first solder pad to a signal solder pad of the first multi-solder pad, (d) a second conductor track for connecting the first solder pad to a signal solder pad of the second multi-solder pad, (e) a third conductor track for connecting the second solder pad to a signal solder pad of the third multi-solder pad, and (f) a fourth conductor track for connecting the second solder pad to a signal solder pad of the fourth multi-solder pad. Each multi-solder pad has at least one return path solder pad. A lower layer of the test fixture has conductor tracks connected to the return path solder pad of each multi-solder pad.

US Patent:

8434906, May 7, 2013

Filed:

Feb 23, 2010

Appl. No.:

12/711000

Inventors:

Mehmet Arik - Niskayuna NY, US
Stanton Weaver - Niskayuna NY, US
Thomas Stecher - Niskayuna NY, US
Charles Seeley - Niskayuna NY, US
Glenn Kuenzler - Beachwood OH, US
Charles Wolfe, Jr. - Niskayuna NY, US
Yogen Utturkar - Niskayuna NY, US
Rajdeep Sharma - Niskayuna NY, US
Satish Prabhakaran - Niskayuna NY, US
Tunc Icoz - Bridgewater NJ, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

F21V 29/00
H01L 23/34

US Classification:

362294, 362373, 362457, 36224902, 257712

Abstract:

Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

US Patent:

8567046, Oct 29, 2013

Filed:

Dec 7, 2009

Appl. No.:

12/632084

Inventors:

Satish Prabhakaran - Albany NY, US
John Stanley Glaser - Niskayuna NY, US
Ljubisa Dragoljub Stevanovic - Clifton Park NY, US
Juan Manuel Rivas Davila - Niskayuna NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

H01F 7/06

US Classification:

29607, 295921, 29605, 29606, 156185, 156247, 336200

Abstract:

A method for making a magnetic component is provided. The method comprises providing a core with one or more ridges protruding from one or more surfaces of the core, depositing one or more electrically conductive materials on the core, and removing at least a portion of the one or more ridges to form one or more continuous conductors wound around the core. Each of the one or more continuous conductors defines at least one insulating gap. Further, a magnetic component and methods for making the magnetic component are also presented.

US Patent:

20120092108, Apr 19, 2012

Filed:

Oct 18, 2011

Appl. No.:

13/275544

Inventors:

Satish Prabhakaran - Albany NY, US
Konrad Roman Weeber - Rexford NY, US
Richard S. Zhang - Rexford NY, US
Charles Michael Stephens - Pattersonville NY, US
Mark Edward Dame - Niskayuna NY, US
Yang Cao - Niskayuna NY, US

International Classification:

H01F 27/08

US Classification:

336 55

Abstract:

A magnetic component such as a transformer or inductor comprises one or more litz-wire windings and one or more metallic cooling tube windings. Each litz-wire winding is wound together with a corresponding single metallic cooling tube winding on a common bobbin to provide an indirectly-cooled magnetic component.

US Patent:

20120161570, Jun 28, 2012

Filed:

Dec 23, 2010

Appl. No.:

12/977800

Inventors:

Michael Joseph Schutten - Rotterdam NY, US
Manoj Ramprasad Shah - Latham NY, US
Satish Prabhakaran - Albany NY, US
Robert James Thomas - Rexford NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

H02K 3/34

US Classification:

310215

Abstract:

An electric motor is configured with a stator core assembly that includes a stator core having a plurality of winding slots. A plurality of stator windings pass through the plurality of winding slots that include slot liners configured to provide electrostatic shields surrounding the plurality of stator windings. The electrostatic shields are referenced to an electrical location to reduce common mode currents associated with the electric motor

US Patent:

20130241415, Sep 19, 2013

Filed:

May 6, 2013

Appl. No.:

13/887793

Inventors:

Stanton Earl Weaver - Northville NY, US
Thomas Elliot Stecher - Scotia NY, US
Charles Erklin Seeley - Niskayuna NY, US
Glenn Howard Kuenzler - Beachwood OH, US
Yogen Vishwas Utturkar - Niskayuna NY, US
Rajdeep Sharma - Niskayuna NY, US
Satish Prabhakaran - Niskayuna NY, US
Tunc Icoz - Schenectady NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H05B 33/08
F21V 29/00
F21V 29/02

US Classification:

315117

Abstract:

Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

US Patent:

20220224331, Jul 14, 2022

Filed:

May 31, 2019

Appl. No.:

17/615304

Inventors:

- Schenectady NY, US
Satish Prabhakaran - Colonie NY, US

International Classification:

H03K 17/687

Abstract:

A switching circuit is provided. The switching circuit includes a first stage, a second stage, a decoupling inductor, a decoupling capacitor, and a semiconductor switch coupled between the first stage and the second stage. The first stage is configured to be coupled to a first bus. The second stage is configured to be coupled to a second bus. The decoupling inductor is coupled to the second stage, and the decoupling capacitor is coupled to the first stage. The semiconductor switch is configured to be controlled to convert a first current received at the first stage to a second current supplied to the second stage.

US Patent:

20190385785, Dec 19, 2019

Filed:

Jun 13, 2018

Appl. No.:

16/007844

Inventors:

- Schenectady NY, US
Anoop Jassal - Schenectady NY, US
Naveenan Thiagarajan - Niskayuna NY, US
Satish Prabhakaran - Albany NY, US
Xiaosong Kang - Dayton OH, US
Ruxi Wang - Cohoes NY, US

International Classification:

H01F 27/34
H01F 27/28
H01F 27/24
H01F 27/08

Abstract:

A magnetic unit is presented. The magnetic unit includes a magnetic core. The magnetic core includes a first limb and a second limb disposed proximate to the first limb, where a gap is formed between the first limb and the second limb. The magnetic unit further includes a first winding wound on the first limb. Moreover, the magnetic unit includes a conductive element disposed facing an outer periphery of the first winding, where the conductive element is configured to control a fringing flux generated at the gap. Further, the magnetic unit includes a heat sink operatively coupled to the conductive element, where the conductive element is further configured to transfer heat from at least one of the conductive element and the first winding to the heat sink. Moreover, a high frequency power conversion system and a method of operation of the magnetic unit is also presented.