Donald Krahn resumes & CV records
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Donald R Krahn DeceasedBradenton, FL
Donald Krahn Phones & Addresses
Lakewood Ranch, FL
Saint Paul, MN
8224 Waterview Blvd, Bradenton, FL 34202 (941) 907-2281
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Donald R Krahn
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Betina Krahn
It was during those summers that she met her future husband, physics graduate student Donald Krahn. [1] The family moved to Oklahoma, where Krahn finished the work for her Masters of ...
Us Patents
Peak Magnetic Field Detector With Non-Volatile Storage
US Patent:
5317251, May 31, 1994
Filed:
Nov 23, 1992
Appl. No.:
7/979950
Inventors:
Jeffrey S. Haviland - Plymouth MN
Donald R. Krahn - Eagan MN
Robert W. Schneider - Bloomington MN
Donald R. Krahn - Eagan MN
Robert W. Schneider - Bloomington MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01R 1900
G11B 5127
G11B 5127
US Classification:
324102
Abstract:
A peak current detecting and non-volatile storage device has a substrate having a hole. Individual magnetic field detecting elements are located on the substrate and are radially displaced from the hole. A conductor extends through the hole. The magnetic field detecting elements are magnetized to a predetermined state. Current carried by the conductor creates a magnetic field around the conductor which alters the predetermined state of magnetization of the magnetic field detecting devices. Various readout techniques may be used to determine the altered state of magnetization which is representative of the magnetic field and may be easily related to the current.
Magnetic Field Sensing Device
US Patent:
5247278, Sep 21, 1993
Filed:
Nov 26, 1991
Appl. No.:
7/797872
Inventors:
Bharat B. Pant - St. Louis Park MN
Donald R. Krahn - Eagan MN
Richard B. Fryer - Minnetonka MN
Donald R. Krahn - Eagan MN
Richard B. Fryer - Minnetonka MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
H01L 4300
US Classification:
338 32R
Abstract:
A self-contained magnetic field sensing device which has magnetic field sensing elements arranged in an electrical bridge network. An integral electrical conductor spaced from the sensing elements carries a current for setting and resetting the direction of magnetization of the sensing elements. A known magnetic field useful for test set up and calibration is provided at the sensing elements by a second integral electrical conductor.
Magnetoresistive Proximity Sensor
US Patent:
5351028, Sep 27, 1994
Filed:
Jun 14, 1993
Appl. No.:
8/076511
Inventors:
Donald R. Krahn - Eagan MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
H01L 4308
US Classification:
338 32R
Abstract:
A proximity sensor which has planar magnetoresistive elements lying in the plane of a radial magnetic field. The magnetoresistive elements arranged in a bridge configuration and are magnetically saturated by the radial magnetic field. The proximity sensor detects the approach of a ferromagnetic object by detecting movement of the effective center of the radial magnetic field.
Position Detection Apparatus Including A Circuit For Receiving A Plurality Of Output Signal Values And Fitting The Output Signal Values To A Curve
US Patent:
5589769, Dec 31, 1996
Filed:
Sep 30, 1994
Appl. No.:
8/324182
Inventors:
Donald R. Krahn - Eagan MN
Assignee:
Honeywell Inc. - Minneapolis MN
International Classification:
G01B 702
G01D 516
G01D 5246
G01D 516
G01D 5246
US Classification:
32420726
Abstract:
A member having a magnet attached is moveable along a path which has an array of magnetic field sensors adjacent the path. Each sensor provides a bipolar output signal as the magnet passes. A plurality of sensors provide a plurality of output signals for a first position of the magnet. Electronic means fit the plurality of output signals to a first curve having a crossover point to determine the first position.
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