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About: Elemental Signals

Module by: Don Johnson

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Name: Elemental Signals
ID: m0004
Language: English (en)
Summary: Complex signals can be built from elemental signals, including the complex exponential, unit step, pulse, etc. This module presents the elemental signals in brief.
Subject: Science and Technology
Keywords: Ampere, amplitude, complex exponential, component, elemental signals, Euler, Euler's relation, frequency, i, imaginary, j, phase, phasor, pulse, real, sine, sinusoid, square wave, Steinmetz, time constant, unit step
Document Type: -//CNX//DTD CNXML 0.5 plus MathML//EN
License: Creative Commons Attribution License (CC-BY 1.0)
Authors: Don Johnson (dhj@rice.edu)
Copyright Holders: Don Johnson (dhj@rice.edu)
Maintainers: Don Johnson (dhj@rice.edu), Roy Ha (rha@alumni.rice.edu), Benjamin Fite (bfite@rice.edu)
Version: 2.27 (history)
Created: Jun 22, 2000 12:00 am GMT-5
Revised: Aug 26, 2008 10:42 pm GMT-5

Version History

Version: 2.27 Aug 26, 2008 10:42 pm GMT-5 by Don Johnson
Changes: 
Improved a few figures.
Version: 2.26 Aug 9, 2008 6:27 pm GMT-5 by Don Johnson
Changes: 
Repaired the wording in the introduction.
Version: 2.25 Aug 8, 2008 2:55 pm GMT-5 by Don Johnson
Changes: 
Changed the prose concerning j.
Version: 2.24 May 7, 2007 2:23 pm GMT-5 by Don Johnson
Changes: 
Minor changes in wording.
Version: 2.23 Apr 15, 2005 11:13 am GMT-5 by Charlet Reedstrom
Changes: 
update to cnxml-0.5, remove mode attribute on math tags
Version: 2.22 Sep 7, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
added links to figures.
Version: 2.21 Aug 30, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
Updated Steinmetz link to correct URL. invent.org updated its directory structure, so the previous URL went to a redirect page.
Version: 2.20 Aug 16, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
Fixed minor typos.
Version: 2.19 Jun 18, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
updated to 4.0
corrected typos
Version: 2.18 May 30, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
Verfiy the id of a section.
Version: 2.17 Apr 2, 2002 12:00 am US/Central by (Unknown)
Changes: 
Corrected constant i to identifier i for current and changed constant number pi to built-in pi.
Version: 2.16 Sep 24, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
- Fixed MathML errors : bmh
Version: 2.15 Sep 13, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
- Fix MathML error
Version: 2.14 Sep 11, 2001 12:00 am GMT-5 by Brent Hendricks
Changes: 
Converted to CNXML 0.3.5
Version: 2.13 Aug 30, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Fixed typos and changed keywords
Version: 2.12 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
delete the name for the equation and figure.
Version: 2.11 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Some place use m:cn for -1 and use m: ci for i, so I change that.
Version: 2.10 Aug 23, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Made the comma right next to the closing math tag.
-erin
Version: 2.9 Aug 20, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
I re-uploaded all the images and included the eps files for each image.
Version: 2.8 Jul 17, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Remodularized, some minor revisions.
Version: 2.7 Jun 27, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Sample text
Version: 2.6 May 31, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Changed some wording
Version: 2.5 May 30, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Put multi-word keywords in correct order
Version: 2.4 May 30, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Updated webform abstract
Version: 2.3 May 30, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Updated tags
Version: 2.2 May 30, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Updated abstract
Version: 2.1 May 25, 2001 12:00 am GMT-5 by (Unknown)
Changes: 
Updated module from cnxml ver 0.1 to ver 0.3
Version: 2.0 Feb 6, 2001 12:00 am US/Central by Brent Hendricks
Changes: 
Bumped version to 2.0

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The following citation styles comply with the attribution requirements for the license (CC-BY 1.0) of this work:

American Chemical Society (ACS) Style Guide:

Johnson, D. Elemental Signals, Connexions Web site. http://cnx.org/content/m0004/2.27/, Aug 26, 2008.

American Medical Assocation (AMA) Manual of Style:

Johnson D. Elemental Signals [Connexions Web site]. August 26, 2008. Available at: http://cnx.org/content/m0004/2.27/.

American Psychological Assocation (APA) Publication Manual:

Johnson, D. (2008, August 26). Elemental Signals. Retrieved from the Connexions Web site: http://cnx.org/content/m0004/2.27/

Chicago Manual of Style (Bibliography):

Johnson, Don. "Elemental Signals." Connexions. August 26, 2008. http://cnx.org/content/m0004/2.27/.

Chicago Manual of Style (Note):

Don Johnson, "Elemental Signals," Connexions, August 26, 2008, http://cnx.org/content/m0004/2.27/.

Chicago Manual of Style (Reference, in Author-Date style):

Johnson, D. 2008. Elemental Signals. Connexions, August 26, 2008. http://cnx.org/content/m0004/2.27/.

Modern Languages Association (MLA) Style Manual:

Johnson, Don. Elemental Signals. Connexions. 26 Aug. 2008 <http://cnx.org/content/m0004/2.27/>.