Simple AC Generator

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We can create a continuously changing magnetic field by rotating a magnet. This can be done by attaching the magnet to a DC motor as shown in the figure. Motors used in the DVD players are suitable, one unit is included in the kit.

The frequency of the generated waveform is same as the number of rotations of the magnet per second.

This experiment can be extended to use more than one coil, to generate two phase or three phase AC. The angle between the phases will be same as the angle between the axes of the coils.

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