Chapter 13 Magnetically Coupled Circuits. Chapter Objectives: Understand magnetically coupled circuits. Learn the concept of mutual inductance. Be able to determine energy in a coupled circuit. Learn how to analyze circuits involving linear and ideal transformers.
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Eeng224 Circuit Theory II
Department of Electrical and Electronic Engineering
Eastern Mediterranean University
a) Magnetic flux produced by a single coil.
c) Mutual inductance of M12 of coil 1 with respect to coil 2.
If the current ENTERS the dotted terminal of one coil, the reference polarity of the mutual voltage in the second coil is POSITIVE at the dotted terminal of the second coil. If the current LEAVES the dotted terminal of one coil, the reference polarity of the mutual voltage in the second coil is NEGATIVE at the dotted terminal of the second coil.
b) Series-opposing connection.
b) Frequency-domain circuit
a) Time-domain circuit
P.P.13.2 Determine the phasor currents
Ia = I1 – I3
Ib = I2 – I1
Ic = I3 – I2
Io = I3
Blue Voltage due to Ia
Red Voltage due to Ic
Green Voltage due to Ib
Equivalent П Circuit for Linear Transformers