Magnetic circuit

A magnetic circuit may be considered as path followed by the magnetic flux. A rectangular core of magnetic material is wounded with N turn of a coil carrying a current of I amperes.

Types of magnetic material are wounds with N turn of a coil carrying a current of I amperes.

Magnetic circuit

Magnetic circuit

Types of magnetic circuit

  1. Series magnetic circuit
  2. Parallel magnetic circuit

Series magnetic circuit

  • The same flux ∅ passes through all the parts of the series magnetic circuit.
  • The total reluctance of the series magnetic circuit is the sum of the reluctances of the series- connected parts of the magnetic circuit.
  • The total mmf is equal to the sum of the mmfs required for the individual parts of the series magnetic circuit.

The series magnetic circuit are classified as:

  1. Simple series magnetic circuits
  2. Composite series magnetic circuit

Parallel magnetic circuit

  • A parallel magnetic circuit has the same mmf appearing across all the parallel parts.
  • The total is the sum of the fluxes in the individual parallel parts of the magnetic circuit.
  • ∅= ∅1+∅2
  • The reciprocal of the effective reluctances is equal to the sum the reciprocals of the reluctances of the individual parallel parts.
  • 1/S =1/(S1)+1/(S2)

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