| 摘要 |
<p>PURPOSE:To prevent malfunction due to the slack of tape for a tape recorder which is put under a stop mode with operation of a switch when the tape is completely taken up to a reel, by preventing the stop mode for a prescribed period when the travelling of tape is started. CONSTITUTION:A tape 11 touches a tape guide 14, and a tension arm 9 has a large turn of clockwise direction by energization given with a fulcrum 12. Thus a switch 2 is closed. When the tape 11 is completely taken up to a reel 5 with the closed switch 2, ''H'' is supplied to a terminal 16 via a resistance R1 and a diode D1 to secure a stop mode. When ''H'' is supplied to terminals 17, 18 and 19 each through an operation of reproduction, quick winding and rewinding, respectively, the D1 side of the switch 2 is earthed for a prescribed time by the voltage applied to a capacitor C via diodes D2-D4. Under such conditions, if the switch 2 is turned on by the slack of tape, ''H'' is never supplied to a terminal 16.</p> |
