| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a high-frequency power transformer, equipped with a secondary winding wire with tap for full wave rectifying output and a high- efficiency and high-reliability power transforming device using the same. SOLUTION: For the high frequency power transformer, provided with a primary winding wire having no center tap and at least one pair of secondary winding wires for full-wave rectifying output around a no-cut nanocrystal magnetic alloy thin band winding magnetic core, in which the fine crystal grains of a crystal grain diameter smaller than 50 nm occupy more than 50% of entire volume of tissues, mainly composed of Fe having the wave height value of a magnetizing power of 0.05 A/m and the permeability of a frequency 20 kHz higher than 10,000 and lower than 30,000, both two coupling coefficients of 20 kHz of the primary winding wire ad the respective secondary winding wires for main full-wave rectifying output thereof are greater than 0.9998, the respective secondary winding wires for the main full-wave rectifying output are short- circuited, and the value obtained by dividing greater leakage inductance measured from the side of the primary winding wire with smaller leakage inductance is smaller than 1.1.</p> |
