lesson24 - Lesson 24 Signals II (Section 5-4, 5-6 and 5-7)...

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Lesson 24 – Signals II (Section 5-4, 5-6 and 5-7) (CLOs 5-1 and 5-3) This is the second lesson of a three-lesson block on signals. The first lesson was on Singularity functions and exponentials. This one is on sinusoids and partial descriptors (V P , V PP , V MAX , V MIN , V AVG , V RMS .) We’ll skip over Section 5-5 and include it with Section 5-7. Sinusoids The students should already know how to define a sinusoid from Trig and Calculus but we will reinforce that knowledge. We will show them how to write sinusoids in both rectangular and polar forms – and how to convert from one form to another. The importance of sinusoids not only the fact that it is the form in which most of our power comes, but that it is at the heart of the study of Phasors and Filters. Begin by telling the students that there are infinite types of signals that are processed. Obviously, we cannot study them all. However, a few key signals tell us a lot about how that circuit operates. Singularity functions, on one hand, tell us about the transient behavior of circuits – how circuits behave when they are switched on or off or how they behave when processing digital signals. Sinusoids, on the other hand, tell us how about the frequency behavior of circuits – important in communications, audio and power applications. We already looked a singularity functions now we will look at sinusoids. Suggest starting by drawing the sinusoid waveform above, but do NOT place a vertical axis.
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lesson24 - Lesson 24 Signals II (Section 5-4, 5-6 and 5-7)...

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