Demonstrations

Change of a Diode

Code Number :	3A95.55
Disclaimer:	Reprinted by permission of Dick Berg, University of Maryland, for use on this website. The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources. Further information regarding legal liability in use of demonstrations and labs will be found on the web site Injuries in School/College Laboratories in USA. The University of Iowa Disclaimers: University of Iowa Disclaimer All Rights Reserved..
Condition :	Excellent
Principle :	Chaotic Electronic Circuits
Area of Study :	Acoustics
Equipment :	Wave generator, oscilloscope, chaos with a diode circuit board.
Procedure :	Set the oscilloscope to XY plot and connect to the circuit board. The wave generator should be set at 90 to 135 Khz. A stable trace should be shown on the oscilloscope until you change the initial conditions slightly with the DC offset of the wave generator. At that time the trace will go into a chaotic oscillation.

References

Richard V. Mancuso and Elise M. Somerset, "Changing of the State of a Diode and Chaos," TPT, Vol. 35, # 1, p. 31, (Jan. 1997).

Richard J. Wiener, Kristine E. Callan, Stephen C. Hall, Thomas Olsen, "Proportional Feedback Control of Chaos in a Simple Electronic Oscillator", AJP, Vol. 74, # 3, p. 200, March 2006.

Prodyot Kumar Roy, Arijit Basuray, Emanuel Gluskin, "On Power Supplies Used for Laboratory Demonstration of Chaotic Electronic Oscillators", AJP, Vol. 73, # 11, Nov. 2005, p. 1082.

Ken Kiers, Dory Schmidt, J. C. Sprott, "Precision Measurements of a Simple Chaotic Circuit", AJP, Vol. 72, # 4, Apr. 2004, p. 503.

Ned J. Corron, Shawn D. Pethel, and Buckley A. Hopper, "A Simple Electronic System for Demonstrating Chaos Control", AJP, Vol. 72, # 2, Feb. 2004, p. 272.

Daniel J. Gauthier, "RESOURCE LETTER: CC_1: Controlling Chaos", AJP, Vol. 71, # 8, Aug. 2003, p. 750.

Prodyot Kumar Roy, Arijit Basuray, "A High Frequency Chaotic Signal Generator: A Demonstration Experiment", AJP, Vol. 71, # 1, Jan. 2003, p. 34.

B. K. Jones, G. Trefan, "The Duffing Oscillator: A Precise Electronic Analog Chaos Demonstrator for the Undergraduate Laboratory", AJP, Vol. 69, # 4, p. 464, April, 2001.

J. C. Sprott, "Simple Chaotic Systems and Circuits", AJP, Vol. 68, # 8, p. 758, August 2000.

Keith Briggs, "Simple Experiments in Chaotic Dynamics", AJP, Vol. 55, # 12, Dec. 1987, p. 1083.

Douglas Smith, "How to Generate Chaos At Home," The Amateur Scientist, (January, 1992).

Mail Questions and Comments to: Dale Stille