| 摘要 |
Apparatus for adjusting and displaying the stylus pressure exerted on a record disc by a stylus carried by a tone arm in a record playing device comprises a vertical drive motor for bi-directionally driving the tone arm in the vertical direction, an adjusting circuit, such as an adjustable resistor, producing a control signal whose level is determinative of the stylus pressure, an energizing circuit responsive to the control signal for energizing the vertical drive motor in accordance with the level of the control signal, thereby establishing the stylus pressure, and a display device, such as a digital display, responding to the control signal for providing a visual display of the stylus pressure as determined by the level of the control signal.
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