Steven M Keidl from Madison, WI, age 49

Resumes

Residential Renovation And Renewal Consultant, Home Inspector, Real Estate Investor

Location:

Madison, WI

Industry:

Civil Engineering

Work:

Biologic Environmental Consulting Oct 2011 - Oct 2013
Restoration Engineer
Emerson House Oct 2011 - Oct 2013
Residential Renovation and Renewal Consultant, Home Inspector, Real Estate Investor
Emerson House Reconstruction Aug 2006 - Oct 2011
Renovator and Consultant
Habitat For Humanity of Dane Jul 2004 - Aug 2006
Construction Supervisor
Vp Buildings Jun 2000 - May 2003
Design Engineer

Education:

University of Wisconsin - Madison 2004 - 2004
University of Wisconsin - Madison 1993 - 2000
Bachelors, Bachelor of Science In Civil Engineering, Environmental Engineering

Skills:

Construction
Green Building
Fundraising
Nonprofits
Project Planning
Community Outreach
Budgets
Structural Engineering
Leadership
Architectural Design
Customer Service
Public Speaking
Engineering

Interests:

Building Restoration
Electronics
Wilderness Backpacking
Sailing
Antique Radio Restoration

Business Records

Name / Title

Company / Classification

Phones & Addresses

Steven Keidl

Emerson House
Architect · Contractors · Woodworking · Decks · Home Inspection · Interior Painters · Remodeling

Madison, WI 53715
(608) 669-5775

Publications

Us Patents

Method And Phase Redundant Regulator Apparatus For Implementing Redundancy At A Phase Level

US Patent:

6836100, Dec 28, 2004

Filed:

May 15, 2003

Appl. No.:

10/438398

Inventors:

Patrick Kevin Egan - Rochester MN
Steven Dennis Keidl - Rochester MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G05F 159

US Classification:

323272, 323285

Abstract:

A plurality of regulator phases are connected in parallel between a regulator input and a regulator output, each phase including a regulator receiving an input voltage and providing an output voltage. A multi-phase controller is coupled to each of the plurality of regulator phases, where one or more phases are provided for enabling redundancy. The multi-phase controller receives a feedback output voltage and a respective detected current signal from each of the plurality of regulator phases. The multi-phase controller generates control signals to sequentially activate each of the plurality of regulator phases for predetermined periods of time to generate controlled current sharing between phases. To achieve redundancy at a phase level, each of the plurality of regulator phases includes an output ORing device to limit reverse current flow into each phase and an input protection device for providing input over current protection and output over voltage protection of each phase. A current sharing method maintains current sharing between the active phases after a failure of one or more phases with one or more phases provided for enabling redundancy.

Sweep Circuit For Cathode-Ray Tube Display

US Patent:

40548163, Oct 18, 1977

Filed:

Jul 2, 1976

Appl. No.:

5/702308

Inventors:

Steven Dennis Keidl - Rochester MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01J 2970
H01J 2972

US Classification:

315387

Abstract:

A recurrent digital sweep signal starts an integrator fed by a constant current. The integrator includes push-pull Darlington stages, which act as alternately conducting controlled current sources for split deflection coils outside the integrator feedback loop. A phase shifter provides arcsine correction. A time-out circuit avoids excessive dissipation if the sweep signal should be lost.

Controlled Low Impedance High Current Circuit Board Interconnect

US Patent:

61919543, Feb 20, 2001

Filed:

Nov 16, 1998

Appl. No.:

9/193328

Inventors:

Steven Dennis Keidl - Rochester MN
Gary Allen Thompson - Pine Island MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H05K 114
H01B 1700

US Classification:

361803

Abstract:

An apparatus for electrically interconnecting circuit boards and providing controlled low impedance current paths. A first conductive member has a first surface, a second surface and a third planar surface, the first surface attaches to a first circuit board or CIM and the second surface attaches to a second circuit board or CIM. An insulative sheet having dielectric properties is aligned parallel to the third surface of the first conductive member. A second conductive member has a fourth surface, a fifth surface and a sixth planar surface, the fourth surface connects to the first circuit board and the fifth surface is for attaching to the second CIM. The sixth planar surface is aligned parallel to the insulative sheet, such that a controlled low impedance high current interconnect can be achieved between the first CIM and the second circuit board responsive to the dielectric properties of the insulative sheet.

Battery Charging Method And Apparatus Using Current Control

US Patent:

56170076, Apr 1, 1997

Filed:

Aug 17, 1994

Appl. No.:

8/291990

Inventors:

Steven D. Keidl - Rochester MN
Jeffrey S. Rotter - Rochester MN
Steven W. Steele - Rochester MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H02J 700
H01M 1044

US Classification:

320 22

Abstract:

A battery charging aparatus and method are provided for charging a battery using current control with a switching power supply charging circuit coupled to the battery. During a first charging phase, a predetermined constant charging current is applied to the battery. The battery voltage is monitored and a second charging phase is started when the battery voltage reaches a predetermined threshold voltage. During a second charging phase, a sequence of stepwise decreasing-amplitude current pulses are applied to the battery. The envelope for the decreasing current pulses is exponential which is characteristic of the current for voltage controlled charging methods. The battery voltage is maintained at a temperature compensated target with a 1% tolerance. The charging current is compared to a predetermined minimum amplitude value and a third charging phase is started when the sequential charging current pulse equals the predetermined minimum amplitude value. During a third charging phase, predetermined charging current pulses having the predetermined minimum amplitude value are applied to the battery.

Buried Control Signal Recording Systems And Method

US Patent:

43131409, Jan 26, 1982

Filed:

Dec 7, 1979

Appl. No.:

6/101379

Inventors:

Steven D. Keidl - Rochester MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 2110

US Classification:

360 77

Abstract:

A single gap transducer simultaneously senses recorded control or servo signals and records data signals. A magnetic medium used with this invention is preferably a single coating magnetic medium. During recording, the recording signal is appropriately subtracted from the readback signal for removing write signal effects on the readback signal. The servo signals are preferably deeply recorded into the magnetic coating whereas the data signals are preferably recorded in an outer surface portion of the magnetic coating.

Magnetic Disk-Control Track Read Through Envelope

US Patent:

44245394, Jan 3, 1984

Filed:

Dec 23, 1981

Appl. No.:

6/333837

Inventors:

Steven D. Keidl - Rochester MN
Karl A. Shidler - Rochester MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11B 5012
G11B 582

US Classification:

360 69

Abstract:

Control information for a flexible magnetic disk storage assembly is recorded on the periphery of the disk in a region not used for recording data. The control information is read through the protective cover or envelope which encloses the disk by means of a magnetic transducer such as a four track audio cassette head which bears against the envelope. By recording index and sector pulses as part of the control information, hard sectoring can be inexpensively and accurately achieved. A recorded fixed frequency control signal can be read and used as part of the feedback loop in a phase locked oscillator used to control a d. c. motor driving the spindle. The control information can also include servo tracks which assist in registering the data transducer directly over data tracks on media which has changed its dimensions.

Metal Substrate Double Sided Circuit Board

US Patent:

H14710, Aug 1, 1995

Filed:

Apr 26, 1993

Appl. No.:

8/053933

Inventors:

David J. Braun - St. Charles MN
Charles J. Guenther - Rochester MN
James A. Hagan - Rochester MN
Mark K. Hoffmeyer - Rochester MN
Steven D. Keidl - Rochester MN
Timothy C. Daun-Lindberg - Rochester MN
John G. Stephanie - Rochester MN
Vincent W. Ting - Rochester MN

International Classification:

H02B 156
H05K 720

US Classification:

361704

Abstract:

Disclosed is a circuit board and a process for the manufacture thereof providing a circuit board comprising a metal core having parallel first and second major faces and exhibiting high thermal and electrical conductivity. The circuit board includes electrical insulating layers of thermally conductive, dielectric material applied to the first and second major faces of the metal core. Protecting the dielectric layer and copper conductors is a solder mask layer applied to the dielectric layers and forming outward facing major surfaces. A plurality of insulated and grounded vias having electrically conductive interior rings connecting the major surfaces are provided through the board. Conductive sleeves within the vias are either electrically insulated from the metal core by dielectric material or in electrical contact to the metal core for grounding.

Closed Loop Stepper Motor Circuitry Without Encoder

US Patent:

42556937, Mar 10, 1981

Filed:

Oct 29, 1979

Appl. No.:

6/089324

Inventors:

Steven D. Keidl - Rochester MN

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G05B 1940

US Classification:

318685

Abstract:

Stepper motor control circuitry including a phase locked loop circuit formed by a phase detector outputted to a filter and a voltage controlled triangular and square wave generator which has a frequency control input terminal connected to the output of the filter and which provides a square wave on an output thereof connected as an input to the phase detector. An oscillator drives the phase detector, and the outputs of the generator are connected as inputs to a pulse width modulated driver which has its outputs connected to the coils of the stepper motor. A differential amplifier is connected across one of the coils of the motor, and a balanced modulator synchronous detector or multiplier has two inputs one of which constitutes an output of the differential amplifier and the other of which is a connection to the square wave output of the generator. The output of the multiplier constitutes an error signal which is supplied to a summing junction between the filter and generator so that, upon the application of an instantaneous load to the stepper motor, the error signal causes a very quick return to normal speed of the motor.

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