| 摘要 |
<p>PURPOSE:To realize the faithful reproduction of the reproduced signal of a tape, by obtaining a certain high-accuracy speed of rotation by means of an escapement with use of a spring for the drive force of rotation. CONSTITUTION:A power source 1 carries out an electrical process of the aural signal for an amplifier 104, a reproducer 101, recorder 102, a speaker 105, etc. For the mechanical operation of the reproducer 101, recorder 102, a rewinding mechanism 103, etc., a spring 4 is wound up by a manual device 3 to give the rotary driving via a gear 5. A speed regulator 6 keeps a constant speed of rotation for the gear 5 and works synchronously with the signal obtained by dividing the signal supplied from an oscillator 201 such as a quarts oscillator, an RC oscillator, etc.</p> |
