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Ramsden, Edward A.   "Hall Sensor with High Pass Hall Voltage Filter",  US 4,982,155   Jan. 1, 1991.

Ramsden, Edward A.   "Method for Adjusting Ferrous Article Proximity Detector",  US 5,818,222  Oct. 6, 1998.

Ramsden, Edward A.,  Guydan, Arthur Douglas  "Magnetic Accelerometer",  US 6,087,951 Jul. 11, 2000.

Ramsden, Edward A.;  Beiermann, Bradley S. "System for Adjusting a Magnetic Sensor to Detect the Presence of Ferrous Objects",  US 6,127,821 Oct. 3, 2000.

Ramsden, Edward A. "Analog-to-Digital Converters",  US 6,809,674, Oct 26, 2004.

Ramsden, Edward A. "Programmable logic device with hardwired microsequencer", US 6,958,625, October 25, 2005.

Morse, Douglas C.; Miller, Edward E.; Ramsden, Edward A.  "Powering-up a device having digital and analog circuitry",  US 7,028,201, April 11, 2006.

Ramsden, Edward A. "Method for configuring multiple-output phase-locked loop frequency synthesizers", US 7,132,864, November 7, 2006.

Herrick, John; Yates, Fred; Morgan, Jeffrey Scott; Ramsden, Edward A. "Throttle control method and apparatus", US 7,210,453, May 1, 2007.

Ramsden, Edward A. "Timer systems and methods", US 7,257,727, August 14, 2007.

Ramsden, Edward A. "Rotary position sensor", US 7,304,472, December 4, 2007.

Books Published

Ramsden, Ed  "Hall Effect Sensors: Theory and Application", 2001 Advanstar Communications, Cleveland OH. ISBN 0-929870-58-1.  2nd Edition published Spring 2006 by Elsevier, Burlington, MA. ISBN 0-7506-7934-4.


Introduction to Magnetic Sensors – In-house (Sensata)  8-hour course on physics and applications of magnetic sensors for new hires/transfers to Magnetic Sensors Products business unit. (2012-2015)

A Non-linear Correlation Metric - poster session presentation at INFORMS General Meeting Nov. 2012, Phoenix AZ

A QSAR Model using a Probabilistic Neural Network Ensemble - presentation at SIAM Symposium on Data Mining, Apr. 2011, Phoenix AZ

A Method for Scheduling Railroad Fueling Operations - presentation at INFORMS  General Meeting  Nov 2010, Austin TX

If You Liked 'X", then you will Love 'Y': Ideas from the Netflix Prize Competition - presentation at Cascade Systems Society,  Nov 2010, Portland OR

Introduction to Transducer Interfacing – short course at  Sensors Expo and Conference May 2002 San Jose, June 2003 Chicago, Sept. 2003 Anaheim

Ten Easy Things to do with Hall-Effect Sensors - presentation at Sensors Expo and Conference, June 2003, Chicago.

Articles/Papers Published

H. D'Angelo, M. Caramanis, S. Finger, A. Mavretic, Y. Phillis, E.Ramsden, "Event-Driven Model of an Unreliable Production Line with Storage", Summer Computer Simulation Conference, Boston, MA July 1984. Proceedings of SCSC 1984.

M. Ruane, E. Ramsden, H. D'Angelo, A. Mavretic, "The Factory on an Integrated Circuit Chip", 1985 IEEE Proceedings of The International Conference on Cybernetics and Society.

E. Ramsden, M. Ruane, M.Caramanis, H. D'Angelo, A.Mavretic, "The Use of Hardware Simulators in Modeling Production Networks", Large Scale Systems Journal, Special Issue on Manufacturing Systems, vol 11, 1986, pp. 149-164.

E. Ramsden, M. Ruane, H. D'Angelo, M. Caramanis, A. Mavretic, "A Digital Production System Simulation Engine", 1986 IEEE Proceedings of the International Conference on Systems, Man, and Cybernetics, Atlanta, Georgia, October 14-18, 1986.

E. Ramsden, A. Mavretic, "Functional Electronic Simulation Methods for Microcomputers", 30th Midwest Symposium on Circuits and Systems, August 17-18, 1987, Syracuse, New York, pp. 1-4.

H. D'Angelo, M. Caramanis, S. Finger, A. Mavretic, Y. Phillis, E.Ramsden, "Event-Driven Model of an Unreliable Production Line with Storage", International Journal of Production Research 1988, vol 26, no 7, pp. 1173-1182.

E. Ramsden, "Measuring Magnetic Fields with Fluxgate Sensors",  Sensors,  September 1994, vol 11, no. 9, pp. 87-90.

E. Ramsden, "Reducing Hall Effect Sensor Offsets with Signal Conditioning Circuitry", Sensors, January 1995, vol 12, no. 1, pp. 54-56.

E. Ramsden, "Solid State Magnetic Geartooth Sensing", Sensors, June 1996, vol 13, no. 6, pp.14-21.

E. Ramsden, "Ten Easy Things to Do with Magnetic Sensors", Sensors, March 1997, vol 14, no. 3, pp. 16-22.

E. Ramsden, "The Sensors Glossary of Data Acquisition and Signal Processing", Sensors Data Acquisition Special Issue June 1997,  pp. 38-44.

E.Ramsden, "Instrumentation Amplifiers", Sensors,  September 1997, vol 14, no 9, pp.78-81.

E.Ramsden,"Solid-State Magnetic Speed Sensing", Wescon/97 Conference Proceedings, Santa Clara, CA, November 4-6, pp.340-344.

E.Ramsden, "Hall Effect Speed Sensors Offer Reliable Operation in Severe Environments",  Power Conversion and Intelligent Motion, March 1998, pp. 66-70.

E.Ramsden, "Putting Teeth in Hall Effect Sensors", Machine Design, April 2, 1998, pp. 67-68.

E.Ramsden, "Interfacing Sensors and Signal Processing Components", Sensors, May 1998, pp.36-47.

E.Ramsden, "A Do-It-Yourself Data Acquisition Card (or, DA on the Cheap)", Sensors Data Acquisition Special Issue, June 1998, pp.26-32.

E. Ramsden, "The Sensors Glossary of Data Acquisition and Signal Processing", Sensor Data Acquisition Special Issue June 1998,  pp. 50-54.

E. Ramsden, "Sensor Applications for Magnetic Materials", Sensors, September 1998, vol 15, no 9, pp.48-54.

E. Ramsden, "Data Acquisition System Architecture", Machine Plant & Systems Monitor, May/June 1999  pp.10-13.

E. Ramsden, "Five Ways of Monitoring Electrical Current", Sensors,  July 1999, vol 16, no 7, pp.26-38.

E. Ramsden, "The Magic of Digital Filters", Sensors, July 2000, vol17, no 7,  pp. 34-44.

E. Ramsden, "Temperature Measurement", Sensors, September 2000, vol 17, no 9, pp. 17-27.

X. Yang, M. Nagy, B. Fok, E. Ramsden, "Single Chip Electrostatic Proximity Sensor", Proceedings of Sensor Expo,  September. 19-21, 2000, Detroit MI.

X. Yang, M. Nagy, B. Fok, E. Ramsden, "Single Chip Electrostatic Proximity Sensor", Sensors,  December 2000, vol 17, no 12,  pp.22-28.

E. Ramsden, "An Introduction to Analog Filters", Sensors, July 2001, vol 18, no 7, pp. 24-40.

E. Ramsden, "The ispPAC Family of Reconfigurable Analog Circuits", Proceedings of 3rd NASA/DOD Workshop on Evolvable Hardware, July 12-14, 2001, Long Beach, CA, pp.176-181.

E. Ramsden, "Imitating Life: An Introduction to Computer Simulation and Modeling, Part 1", Sensors,  May 2002, vol 19, no 5, pp. 14-23

E. Ramsden, "Imitating Life: An Introduction to Computer Simulation and Modeling, Part 2", Sensors Online,  June 2002,

E. Ramsden, "An Optical Timing System", Sensors, September 2002, vol 19, no 7, pp. 32-44.

E. Ramsden , C. Dix, "Low-Pass Filtering for Vibration Sensors", Sensors, February 2003, vol 20, no 2, pp. 33-37.

G. Greenwood, E. Ramsden, S. Ahmed, "An Empirical Comparison of Evolutionary Algorithms for Evolvable Hardware with Minimum Time-to-Reconfigure Requirements", Proceedings of 5 th  NASA/DOD Workshop on Evolvable Hardware, July 9-11, 2003, Chicago IL, pp.59-66

G. Greenwood, D. Hunter, E. Ramsden "Fault recovery in Linear Systems via Intrinsic Evolution", Proceedings of the 2004 NASA/DOD workshop on Evolvable Hardware, June 24-26, 2004, Seattle WA, pp. 115-122.

E. Ramsden, G. Greenwood, D. Hunter. "EARP-1 - an Evolvable Analog Research Platform", Proceedings of the 2005 NASA/DOD workshop on Evolvable Hardware, June 29-July 1, pp.20-25.

Destroy-it-Yourself Columns (Sensors Magazine 9/05-12/06)

9/05 - The Medium is the Measurement.
10/05 - Trick or Treat !? Seasonal Sensing.
11/05 - In Search of a Low-cost Temperature Sensor: Part I.
12/05 - In Search of a Low-cost Temperature Sensor: Part II.
1/06 - ROHS and Sensors: What this Means to You.
2/06 - Those Pesky Picoamps.
3/06 - Sensors Control the World!
4/06 - Sensors Control the World! (Part 2).
5/06 - Putting Your Data on the Right Bus.
6/06 - Your Helpful Guide to the Thermoelectric Cooler.
7/06 - The Five-Minute Filter University - July Session.
8/06 - The Five-Minute Filter University - August Session.
9/06 - Signal Amplification.
10/06 - Synchronous Detection.
11/06 - The Ultimate Sensor.
12/06 - Just Add Parts and Shake.

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