| 摘要 |
PURPOSE:To prevent a beat failure, by applying a bias high frequency signal of a tape recorder containing plural cassette tape recorders incorporatedly to each cassette tape recorder from a common oscillator. CONSTITUTION:Plural cassette tape recorders 1, 2 are contained incorporatedly to form a double cassete tape recorder. The bias high frequency signal is supplied from the common oscillator OSC to two systems of tuning sections 11, 12 having sound recording heads RH1, RH2 and erasing heads EH1, EH2 of the recorders 1, 2. The two systems of the tuning sections 11, 12 are forcedly synchronized and driven and the output frequency of them is made coincident. Thus, the beat failure is prevented. |
