| 摘要 |
<p>PURPOSE:To enable to form a thin construction and to reduce an occupying space by forming thin cross-shaped cores on the ends of arms of U-shaped core at four sides of a square-shaped common core. CONSTITUTION:The arm ends of U-shaped cores 2a-2d are oppositely contacted with four sides of square-shaped common core 1, the primary side windings 3a, 3b of the same number of turns are wound on one opposed cores 2a, 2b and connected in series, and the secondary side windings 3c, 3d of the same number of turns are wound on the other opposed U-shaped cores 2c, 2d and connected in series. A capacitor C2 is connected in parallel with the series circuit of the secondary side windings 3c, 3d. A single-phase AC power source is connected with the series circuit of the windings 3a, 3b to create parametric oscillation at the secondary side, a load is connected with the series circuit of the windings 3c, 3d to supply an AC output voltage having 90 deg. phase difference with respect to the single phase input voltage of the primary side.</p> |
