| 摘要 |
The present induction type electrostatic generator includes an insulating cylinder containing insulating members in the form of beads or grains. The cylinder is rotated about its horizontal axis so that the inner surface of the cylinder is triboelectrically charged by the insulating members as they slide, roll, or bounce over the inner surface of the cylinder as it is rotated. An equilibrium of electrostatic charge is soon established in which the insulating members acquire one polarity of charge, while the inside surface of the rotating cylinder acquires the opposite polarity of charge. The net charge of the rotating cylinder and its contents is zero, but the distribution of charges is not uniform. The insulating members remain near the bottom of the cylinder as it rotates, being pulled in the direction of rotation by friction and electrostatic forces of attraction while gravity holds them down toward the lowest point of the cylinder. The electrostatic potential of a given area of the cylindrical surface changes dramatically as the cylinder rotates. The cyclic swing of the electrostatic potential of the outer surface creates an opportunity to apply counter-charges by induction from a grounded brush or flexible conducting blade onto the outer surface of the cylinder where it is in close proximity to the charged insulating members. Then, as that portion of the cylinder rotates upward, the voltage of the induced counter-charges increases substantially as they separate from the charged insulating members near the bottom of the rotating cylinder.
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