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Basic laws of magnetic circuits

Lecture



Faraday law
The voltage on the coil is equal to the algebraic sum of the voltage drops on the resistance of the winding wire and the self-induced EMF
  Basic laws of magnetic circuits

Total current law
The circulation of the magnetic field H along any closed loop is equal to the sum of the electrical currents of the wires.
  Basic laws of magnetic circuits

J-current density

Mdc along a closed loop, l is equal to the total current In penetrating the surface bounded by the given circuit:
  Basic laws of magnetic circuits

Magnetic circuit - a system of series-connected ferromagnetic and other elements through which the magnetic flux closes.
The average length of the magnetic circuit:
  Basic laws of magnetic circuits

Air gap coil layout
  Basic laws of magnetic circuits

magnetic field strength
  Basic laws of magnetic circuits

Ohm's law for a magnetic circuit
  Basic laws of magnetic circuits

Reluctance
  Basic laws of magnetic circuits

Magnetic induction
Equation for closed loop magnetic induction sources
  Basic laws of magnetic circuits

In free space
  Basic laws of magnetic circuits

For ferromagnets
  Basic laws of magnetic circuits

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Electrical Engineering, Circuit design

Terms: Electrical Engineering, Circuit design