| 摘要 |
<p>PURPOSE:To prevent the damage of a cassette half due to a reproducing head, by detecting the loading of a cassette tape and starting the traveling of the tape with a delay given by a delaying means for a period of loading the tape. CONSTITUTION:When a cassette tape is almost loaded, a current is supplied from a power supply Vcc through a detecting switch SW1. Then the input voltage of an inverter 2 is gradually increased via an integration circuit 1, and the output of the inverter 2 becomes negative with a delay equivalent to the time during which the loading of tape is over. A delayed pulse signal is supplied to a gate circuit 4 via a differential circuit 3, and at the same time a signal is also supplied to the circuit 4 from an automatic music selecting circuit. Then the output of the circuit 4 is supplied to a review terminal of a mechanism control circuit 6 via an inverter 5. A mechanism 7 has a review action by the output of the circuit 6. This prevent the damage of a cassette half due to a reproducing head.</p> |
