complex waveforms=very confused! - StudentOfFortune.com

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firebirds
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$10.00 complex waveforms=very confused!

From Communications: General-Communications , Engineering: General-Engineering
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Due on Jan. 30, 2009
Asked on Jan 27, 2009 at 4:24:16PM

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Struggling to put an answer together after reading many pages and web searching to two questions. 1. Describe how electrical and electronic devices produce complex waves. 2. describe the effects of complex waveforms on electrical and electronic systems.
I have managed to explain how they are produced from sinusoidal waves.....but these two questions are giving me a headache. What im reading doesnt make sense.

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HOMEWORKNERD
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$10.00 Electronic Waves

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Posted on Jan 27, 2009 at 10:14:08PM

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Preview: ... ex waveforms can be described by sums of sinusoidal waves. The easiest sinusoidal wave to describe is the standing wave, as given by the standing wave equation: y(r)~ = ~ {A } ~{ sin } ~({2 pi r } OVER lambda ) With no time dependence, and thus no motion, the standing wave conveys no energy or information, and varys only with distance (r). We look at the standing wave, then, in order to easily recognize some characteristics that will be common to more complex waves. Amplitude (A) Wavelength () One of the fundamental characteristics of any wave is wavelength (). Defined as the shortest distance at which the wave pattern fully repeats itself, wavelength has the physical units of length (meters). Wavelength of a sinusoidal wave is most easily found by measuring the distance from one peak to the successive peak. Frequency and Period The second fundamental characteristic of a wave is its frequency (f). Electromagnetic Waves Electronic communications over large distances usually requires the use of electromagnetic energy waves as the transmission link between transmitter and receiver. it is necessary to develop the set of properties that describe waves. The electromagnetic spectrum spans an immense range of frequencies ranging from below the 60 Hz of power in an ac outlet to above the six hundred thousand billion Hz of green light in the range of visible light. For convenience, the electromagnetic spectrum is partitioned into frequency ranges which share some similar characteristic: the radio AMPLITUDE MODULATION The process of transmitting speech or audio over transmission lines (wires) presents few problems, as evidenced by the number of telephones and telephone lines. Transmitting the same signals to remote lo ...

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stevesov
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$10.00 A different approach, so it should make more sense...

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Posted on Jan 27, 2009 at 10:50:11PM

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Preview: ... ction of things that sh ...

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