| 摘要 |
<p>PURPOSE:To improve function, to widen the range of use and to reduce expenses by enabling to select cue, review function and automatic heating function by a switching device in the state of reproducing a magnetic tape. CONSTITUTION:When a reproducing push button is depressed, switches 7, 8 conduct and a motor 9 rotates to shift a reproduction tape 18. A signal is generated from a head 1 and the sound is reproduced from a speaker 19 through a regenerative amplifier 2 and a power amplifier 3. At the same time, a signal voltage is added to an input of a non-sound-recording detector 4. When a rapid traverse or a rewinding button of the mechanism 5 is depressed, a switch 6 conducts, a TrQ2 becomes on, and current flows in a plunger 17, and rapid traverse or rewinding operation is maintained. At the same time, a TrQ4 becomes on and lowers the sound of the speaker 19. When the non-sound-recording dtector 4 detects no-sound recorded part of the tape, a TrQ1 becomes on and the plunger 17 becomes off. On the other hand, when a switch 11 is on the side of contacts 13, 15, the TrQ2 is not turned on and therefore becomes cue, review state.</p> |
