| 摘要 |
<p>PURPOSE:To make dimensions of the groove for wiring smaller and to make the overall shape of a rotary transformer smaller by a method wherein a short ring is formed on the facing plates between the rotary core and the fixed core of a rotary transformer by a thin film or thick film techinique. CONSTITUTION:A plurality of circular grooves 3 and 4 are coaxially formed on the facing positions of a rotary core 1 and a fixed core 2 respectively. A wire 5 for signal transmission is wound in the grooves 3 and 4. Between the grooves 3 and 4, grooves with depth of about 20mum and width of about 0.1mm are formed, and a short ring 9 as a ring-shaped thin film conductor is formed in the inside of the grooves 6 and 7 by means of evaporation, spattering, or the like. The short ring reduces the crosstalk between the signals transmitted by the wire 5 wound in the grooves 3 and 4. The substantial smallness of the depth and width of the grooves 6 and 7 allows the overall shape of the rotary transformer to be made small.</p> |
