| 摘要 |
<p>PURPOSE:To almost equalize the controllability of the secondary side output voltage with that of a direct feedback type transformer by a method wherein a conductor pattern is formed centered on a core hole of a coil formation surface for the primary and secondary windings while the conductor pattern is formed near the periphery only of the coil formation surface for an auxiliary winding. CONSTITUTION:Within a core 10 having an intermediate leg core 11 in the central part, an intermediate leg gap 12 is made on an opposite surface of said core 11. In the three layer structured coil laminated body, the primary winding flat plate coil part 21 is allotted to an upper layer, the secondary winding flat plate coil part 22 is allotted to the intermediate layer while an auxiliary flat plate coil part 23 is allotted to the lower layer. Finally, the conductor patterns of the primary winding flat plate coil part 21 and the secondary winding flat plate coil part 22 are formed in almost even density and taking eddy shape from the core hole side to the periphery of the coil formation surface while in the auxiliary winding flat plate coil part 23, the conductor pattern is arranged on the periphery of the coil formation surface.</p> |
