| 摘要 |
PURPOSE:To perform stable constant voltage characteristic while maintaining high withstand voltage by interposing an inductance of specific characteristic and a capacity element between the secondary winding and a rectifier. CONSTITUTION:An input DC voltage E01 is raised through output secondary windings 1b, 1b'; by a self-excited switching regulator which has the primary winding 1a and feedback winding 1c of a main transformer 1, a main switching transistor 2 and a circuit 3 for controlling the pulse width, rectified and smoothed at 9, 9' to obtain a plurality of constant voltage outputs. Inductance elements 11, 11'; having simple attenuating characteristic to the DC current in the inductance of high frequency with DC magnetomotive force higher than 1.0AT as shown and condensers 12, 12' as capacity elements are inserted between the output secondary windings 1b, 1b' and rectifying smoothing circuits 9, 9', thereby cancelling the increase in the voltage V0 at the low current time. |
