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Mon May 20, 2013 08:20:28 AM
Short Desciption:
Fundamentals of Electrical Engineering I
By:
Don Johnson, From its beginnings in the late nineteenth century, electrical engineering has blossomed from focusing on
electrical circuits for power, telegraphy and telephony to focusing on a much broader range of disciplines.
However, the underlying themes are relevant today: Power creation and transmission and information have
been the underlying themes of electrical engineering for a century and a half. This course concentrates on
the latter theme: the representation, manipulation, transmission, and reception of information by electrical
means. This course describes what information is, how engineers quantify information, and how electrical
signals represent information.
Summary:
The conversion of information-bearing signals from one energy form into another is known as energy
conversion or transduction. All conversion systems are ine cient since some input energy is lost as heat, but
this loss does not necessarily mean that the conveyed information is lost. Conceptually we could use any form
of energy to represent information, but electric signals are uniquely well-suited for information representation,
transmission (signals can be broadcast from antennas or sent through wires), and manipulation (circuits can
be built to reduce noise and computers can be used to modify information). Thus, we will be concerned with
how to
• represent all forms of information with electrical signals,
• encode information as voltages, currents, and electromagnetic waves,
• manipulate information-bearing electric signals with circuits and computers, and
• receive electric signals and convert the information expressed by electric signals back into a useful form.
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"Fundamentals of Electrical Engineering I"
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