| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve miniaturization and cost reduction by a method wherein the fluctuation of lamp current of cold cathode tube caused by the output of a secondary winding is kept constant to prevent the unevenness of intensity, and the number of components of the whole circuit of an inverter is reduced, in the inverter transformers of two or more output types. <P>SOLUTION: A modified U-type core 60, connected magnetically to an I-type core 50 inserted into a coil bobbin 10 to divide a winding interval into a first closed magnetic circuit and a second closed magnetic circuit, is provided while the combinations of a primary coil and a secondary coil are coiled respectively in a winding interval divided into the first closed magnetic circuit and the second closed magnetic circuit so that the direction of magnetic flux of the closed magnetic circuit formed in the first closed magnetic circuit is reverse to the direction of the flux of the closed magnetic circuit formed in the secondary closed magnetic circuit. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
