| 摘要 |
<p>PURPOSE:To minimize coupling capacity of a driver, a receiver and a rotary transformer and to minimize the difference of characteristics of n pieces of recorders or reproducers or circuits for performing both by disposing a plurality of windings in the grooves of a rotary or stationary member. CONSTITUTION:A plurality sets of windings 3a, 3b are disposed in the grooves 2 of a rotary or stationary member 5 or 6. For example, when a rotary transformer device 12 having a member in which two windings 3a, 3b are wound in winding grooves 2 formed on a core 1 to be used as the member 5 and a member in which one winding 7 is wound in a winding groove 9 to be used as the member 6 is used to reproduce, RF signals reproduced from a magnetic tape by magnetic heads P1, P2 are amplified by reproducers 13a, 13b, and the outputs are transmitted externally to a rotary drum via the device 12. The reproducers 13a, 13b are sequentially switched to active and nonactive states at each 180 degrees by a P1 switching signal and a P2 switching signal, and the RF signal reproduced from the head P1 or P2 at the time of active state is externally transmitted to the drum.</p> |
