| 摘要 |
A magnetic tape cassette apparatus is disclosed which has a pair of electromagnetic data transducers mounted to a rotary drum to make up a rotary head assembly for data transfer with the magnetic tape. For electrically connecting each transducer to a recording amplifier circuit and a reproducing amplifier circuit, a transformer is employed which comprises a rotary winding mounted to the rotary drum, and two fixed windings electromagnetically coupled to the rotary winding. The two fixed windings are connected respectively to the recording amplifier circuit and the reproducing amplifier circuit. In another embodiment the transformer comprises one rotary winding and one center tapped fixed winding. The two sections of the fixed winding, electrically divided by the center tap, are connected respectively to the recording amplifier circuit and to the reproducing amplifier circuit.
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