Miniaturized transformer and inverter circuit and discharge tube glow circuit including such miniaturized transformer

摘要

A miniaturized transformer includes (a) a planar or rod-shaped magnetic core (10) having a height of 3 mm or less and constituted by a laminate of thin ribbons each having a thickness of 30 mu m or less, each thin ribbon being made of a nanocrystalline soft magnetic alloy having a structure at least partly occupied by crystal grains having an average crystal grain size of 100 nm or less, or an amorphous soft magnetic alloy, (b) at least one primary winding (16) provided around the core (10), and (c) at least one secondary winding (18) provided around the magnetic core (10).