| 摘要 |
The switch is designed to turn on and off according to the rotation of the magnetic fluid instead of employing a relay switch. The switch comprise; a rotation cylinder fixed on the rotating shaft; a magnetic fluid to be uniformly distributed inside of the cylinder according to the rotation of rotating body; a supporter taking rotating movement according to the magnetic fluid distribution; a switch separated and connected by the movement of supporter; an elastic means thrusting the supporter in the switch separation direction.
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