Hello technicians, welcome back to Enghme. The transformer is mainly composed of a magnetic circuit made of iron sheets. The magnetic circuit is composed of two coils B1 and B2, the coils are respectively n1 and n2 turns. The coil B1 powered by the alternating voltage source Sa is passed through by the alternating current i1, and the alternating current generates a variable magnetic flux in the magnetic circuit. This generates an induced electromotive force (emf) in the coil B2, whose frequency is the frequency of the source Sa, and can be used to power a receiver with an impedance of Z ̄. Therefore, through mutual induction, part of the alternating current supplied by the power supply Sa to the circuit B1 (primary) is transferred to the circuit composed of Z ̄ and B2 (secondary).
DOWNLOAD PDF