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lesson04

# lesson04 - Lesson 4 Equivalent Circuits(Section 2-4(CLO 2-4...

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+ _ V 1 + _ + _ V 2 + _ V N V 1 I 2 N Rest of the Circuit Lesson 4 – Equivalent Circuits (Section 2-4)(CLO 2-4) This lesson is on equivalent circuits. We will cover series and parallel resistors and sources and source transformations. Start by defining series and parallel connections. Either students get this concept or they do not. Yet they must get it to do well in this course. It is important to do a lot of drill on series/parallel circuits to feel comfortable that most of your students get it. Draw the following diagram and show that elements in parallel have the same voltage across them. 0 1 = + - V V 0 2 1 = + - V V 0 N 2 = + - V V We can combine all of these loop equations to yield N 2 1 V V V V = = = It does not matter what the elements are – if they are connected in parallel, they will have the same voltage across them. Show that the order of the elements does not matter. We can switch element #1 and #2, or #1 and #N. They will still be in parallel with the same voltage across them. This is useful in solving circuits later on.

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