Lecture29 - Chapter 6

Lecture29 - Chapter 6 - EE216 C ircuit Analysis I Le cture#...

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1 EE216 Circuit Analysis I Lecture # 29 – Chapter 6
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Inductance, Capacitance & Mutual Inductance - Overview So far, we have studied resistive networks and applied circuit analysis tools to resistive networks. Rest assured the circuit analysis tools are general and apply to other electrical circuit elements as well. Now, we study remaining two circuit elements: Inductor – relates to the phenomenon of induced voltage due to flow of current in a magnetic field. Capacitor – relates to the phenomenon of displacement current due to separation of charge in an electric field. Series or Parallel combinations of inductors/capacitors Mutual Inductance
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3 Inductance Inductors are made of wires wound around magnetic or non-magnetic core carrying current. Inductance is the circuit parameter used to describe an inductor. Inductance is the behavior based on phenomena associated with magnetic fields. The source of magnetic field is charge in motion, or current. If the current varies with time, the magnetic field also varies with time. A time varying magnetic field induces a voltage in any conductor linked by the magnetic field. Recall “Right Hand Rule” studied in previous years.
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4 Inductance Inductor: The circuit element used to model the induced voltage to the current in a magnetic field Circuit symbol: Units: Henry Volts•second/Ampere L i v
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5 Inductors – V/I relationship Voltage induced across the terminals of the inductor is proportional to the time rate of change of current in the inductor: where L is the constant of proportionality
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Lecture29 - Chapter 6 - EE216 C ircuit Analysis I Le cture#...

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