| 摘要 |
PURPOSE:To obtain a television community reception use branch circuit in compliance with the BL standard by selecting the winding ratio of a branch transformer as 1:3:7:3 so as to improve the coupling loss. CONSTITUTION:The branch transformers (A), (B) are constituted with the winding ratio 1:3:7:3. Since the transformer (B) have more number of windings than that of the transformer (A) and the leakage magnetic flux generated from the transformer (A) is less, a signal from the input is transmitted to the output without loss. Since the magnetic flux generated by the transformer (B) is more, the sufficient coupling with the secondary winding of the transformer (B) is attained. Further, the coupling loss is less because the winding ratio of the transformer (B) is 7:3.
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