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About: Elemental Signals

Module by: Don Johnson. E-mail the author

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Metadata

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
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)

Latest version: 2.29 (history)
First publication date: Jun 22, 2000 12:00 am +0000
Last revision to module: Jul 6, 2009 5:56 pm +0000

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Version History

Version: 2.29 Jul 6, 2009 5:56 pm +0000 by Don Johnson
Changes:
Replaced circle.eps.

Version: 2.28 Jun 4, 2009 11:19 am +0000 by Connexions
Changes:
Modified markup for explicit .eps image reference

Version: 2.27 Aug 26, 2008 10:42 pm +0000 by Don Johnson
Changes:
Improved a few figures.

Version: 2.26 Aug 9, 2008 6:27 pm +0000 by Don Johnson
Changes:
Repaired the wording in the introduction.

Version: 2.25 Aug 8, 2008 2:55 pm +0000 by Don Johnson
Changes:
Changed the prose concerning j.

Version: 2.24 May 7, 2007 2:23 pm +0000 by Don Johnson
Changes:
Minor changes in wording.

Version: 2.23 Apr 15, 2005 11:13 am +0000 by Charlet Reedstrom
Changes:
update to cnxml-0.5, remove mode attribute on math tags

Version: 2.22 Sep 7, 2002 12:00 am +0000 by (Unknown)
Changes:
added links to figures.

Version: 2.21 Aug 30, 2002 12:00 am +0000 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 +0000 by (Unknown)
Changes:
Fixed minor typos.

Version: 2.19 Jun 18, 2002 12:00 am +0000 by (Unknown)
Changes:
updated to 4.0
corrected typos

Version: 2.18 May 30, 2002 12:00 am +0000 by (Unknown)
Changes:
Verfiy the id of a section.

Version: 2.17 Apr 2, 2002 12:00 am +0000 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 +0000 by (Unknown)
Changes:
- Fixed MathML errors : bmh

Version: 2.15 Sep 13, 2001 12:00 am +0000 by (Unknown)
Changes:
- Fix MathML error

Version: 2.14 Sep 11, 2001 12:00 am +0000 by Brent Hendricks
Changes:
Converted to CNXML 0.3.5

Version: 2.13 Aug 30, 2001 12:00 am +0000 by (Unknown)
Changes:
Fixed typos and changed keywords

Version: 2.12 Aug 24, 2001 12:00 am +0000 by (Unknown)
Changes:
delete the name for the equation and figure.

Version: 2.11 Aug 24, 2001 12:00 am +0000 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 +0000 by (Unknown)
Changes:
Made the comma right next to the closing math tag.
-erin

Version: 2.9 Aug 20, 2001 12:00 am +0000 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 +0000 by (Unknown)
Changes:
Remodularized, some minor revisions.

Version: 2.7 Jun 27, 2001 12:00 am +0000 by (Unknown)
Changes:
Sample text

Version: 2.6 May 31, 2001 12:00 am +0000 by (Unknown)
Changes:
Changed some wording

Version: 2.5 May 30, 2001 12:00 am +0000 by (Unknown)
Changes:
Put multi-word keywords in correct order

Version: 2.4 May 30, 2001 12:00 am +0000 by (Unknown)
Changes:
Updated webform abstract

Version: 2.3 May 30, 2001 12:00 am +0000 by (Unknown)
Changes:
Updated tags

Version: 2.2 May 30, 2001 12:00 am +0000 by (Unknown)
Changes:
Updated abstract

Version: 2.1 May 25, 2001 12:00 am +0000 by (Unknown)
Changes:
Updated module from cnxml ver 0.1 to ver 0.3

Version: 2.0 Feb 6, 2001 12:00 am +0000 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, OpenStax_CNX Web site. http://cnx.org/content/m0004/2.29/, Jul 6, 2009.

American Medical Assocation (AMA) Manual of Style:

Johnson D. Elemental Signals [OpenStax_CNX Web site]. July 6, 2009. Available at: http://cnx.org/content/m0004/2.29/.

American Psychological Assocation (APA) Publication Manual:

Johnson, D. (2009, July 6). Elemental Signals. Retrieved from the OpenStax_CNX Web site: http://cnx.org/content/m0004/2.29/

Chicago Manual of Style (Bibliography):

Johnson, Don. "Elemental Signals." OpenStax_CNX. July 6, 2009. http://cnx.org/content/m0004/2.29/.

Chicago Manual of Style (Note):

Don Johnson, "Elemental Signals," OpenStax_CNX, July 6, 2009, http://cnx.org/content/m0004/2.29/.

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

Johnson, D. 2009. Elemental Signals. OpenStax_CNX, July 6, 2009. http://cnx.org/content/m0004/2.29/.

Modern Languages Association (MLA) Style Manual:

Johnson, Don. Elemental Signals. OpenStax_CNX. 6 July 2009 <http://cnx.org/content/m0004/2.29/>.