| 摘要 |
<p>PURPOSE:To eliminate the crosstalk at high frequency while lowering inductance by disposing short rings in ring-shaped grooves and grounding the short rings when the rotary transformer is manufactured by oppositely arranging the main surfaces of a discoid ferrite core in which a necessary number of the ring-shaped grooves are formed to one main surface and coils are buried in the grooves. CONSTITUTION:The groove 1a for a channel 1 and the groove 2a for a channel 2 are formed to the rotary transformer core for two channels while the groove 3a for the short ring is also formed. The coils are buried in each groove, and the short ring buried in the groove 3a is grounded previously. Accordingly, counter electromotive force is generated on the short ring while being opposed to electromagnetic induction generated by one channel, and a previous electromagnetic induction is denied to eliminate the crosstalk while the inductance of the whole coil is also reduced.</p> |
