A claw-pole electric generator has a circumferentially arranged permanent
magnet, a ring-shaped coil, a yoke and a cover member. The yoke surrounds
an external periphery of the coil. The yoke has a stator yoke portion and
a core yoke portion. The stator yoke portion is disposed between the coil
and the permanent magnet. The core yoke portion is magnetically linked to
the stator yoke portion. The core yoke is disposed on the external
periphery of the coil. The coil and the yoke are rotatably disposed in
relation to the permanent magnet. The stator yoke portion includes a
plurality of first and second yoke sections having a plurality of
plate-shaped pieces in a stacked arrangement on opposite sides of the
coil in an axial direction. The cover member covers at least part of an
external peripheral surface of the yoke section.