110 likes | 120 Views
This lecture covers the properties of the ideal transformer, including infinite permeability and zero current in the core. It also discusses the voltage transformer, current transformer, and impedance transformer. Additionally, it explores the concept of a moving conductor in a static magnetic field and introduces the electromagnetic generator and displacement current.
E N D
16.360 Lecture 27 Exam III
16.360 Lecture 27 Last Lecture • The ideal Transformer • Moving Conductor in a Static Magnetic Field
16.360 Lecture 27 The ideal Transformer properties: • = • I = 0 in the core. • The magnetic flux is confined within the core Questions: • I = ?, with applied voltage of V1and with RL • V2, and I2=?
16.360 Lecture 27 Voltage transformer: Power relations: Why? Current transformer: Impedance transformer:
16.360 Lecture 27 Moving conductor in a static magnetic field:
16.360 Lecture 27 Another way to look at it:
16.360 Lecture 27 Today: • The electromagnetic generator • Moving conductor in a time varying magnetic field • Displacement current
16.360 Lecture 27 The electromagnetic generator
16.360 Lecture 27 Moving conductor in a time-varying magnetic field Example:
16.360 Lecture 27 Displacement current • Ampere’s law in static electric field • Ampere’s law in time-varying electric field • proof of Ampere’s law: Displacement current density
16.360 Lecture 27 Displacement current • Ampere’s law in time-varying electric field Example: