| 摘要 |
PURPOSE: A power supply is provided to supply electric power to spindle motor which rotates hard-disk in a servo track writer to input servo data to hard disk driver. CONSTITUTION: The power supply include a supporter, a movable block which can slide with the guidance of the supporter, a cam which makes the block commute with a predetermined distance, an electric terminal which is on the block and connected or disconnected with the electric terminal of spindle motor so as to supply or stop electric power, a bearing which is settled by supporting pin at a side of the block. The cam is contacted with the surface of bearing in rotatable manner so as to move the block.
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