| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a voltage proportional to the output voltage of a secondary winding from an auxiliary winding wound to a primary side, so that satisfactory electrical insulation is not impaired. SOLUTION: In this transformer, an auxiliary winding P2 is divided into two on a primary winding P1. One is wound on the side of a secondary winding S1, S2, and the other one is wound in the reverse direction distant from the secondary winding. These are connected in series, so that voltages induced in the two auxiliary windings are in the direction reverse to each other. Consequently, satisfactory electrical insulation is secured, without using triple insulating winding or the like as the winding. Also, an auxiliary winding voltage proportional to the secondary side voltage is output from both ends of the auxiliary winding which is divided into two and wound.</p> |
