Basic AC Theory
The periodic reversal of polarity results in the generation of a voltage, as shown in Figure 2. The
rotation of the coil through 360° results in an AC sine wave output.
AC generation is summarized below.
AC Generation Summary
A simple generator consists of a conductor loop turning in a magnetic field,
cutting across the magnetic lines of force.
The sine wave output is the result of one side of the generator loop cutting lines
of force. In the first half turn of rotation this produces a positive current and in
the second half of rotation produces a negative current. This completes one
cycle of AC generation.