3-Lesson_Notes_Lecture23_ee205

# 3-Lesson_Notes_Lecture23_ee205 - EE 205 Dr A Zidouri...

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EE 205 Dr. A. Zidouri - 1 - Electric Circuits II The Transformer Lecture #23

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EE 205 Dr. A. Zidouri - 2 - The material to be covered in this lecture is as follows: o Introduction to Transformers o Analysis of a Linear Transformer Circuit o Reflected Impedance After finishing this lecture you should be able to: ¾ Construct the frequency domain equivalent circuit of a transformer ¾ Analyze a linear transformer circuit ¾ Calculate the reflected impedance into the primary ¾ Calculate the scaling factor for the reflected impedance
EE 205 Dr. A. Zidouri - 3 - Introduction ¾ A Transformer is a magnetic device that takes advantage of the phenomenon of mutual inductance. ¾ A Transformer is generally a four-terminal device comprising two (or more) magnetically coupled coils. ¾ A Transformer may also be regarded as one whose flux is proportional to the currents in its windings. Consider the following general circuit model for a transformer used to connect a load to a source. j ω L 1 j ω L 2 R 1 j ω M V S Z S a b c d R 2 I 1 I 2 j ω MI 1 j ω MI 2 Fig.33-1 Frequency-domain circuit model for a Transformer

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EE 205 Dr. A. Zidouri - 4 - Terminology ¾ The transformer winding connected to the source is the primary winding.
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## This note was uploaded on 01/16/2010 for the course EE ee205 taught by Professor Profsyed during the Spring '09 term at King Fahd University of Petroleum & Minerals.

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3-Lesson_Notes_Lecture23_ee205 - EE 205 Dr A Zidouri...

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