| 摘要 |
Disclosed is an electric power generating apparatus. The electric power generating apparatus includes a casing including an interior space, a permanent magnet that is provided in the interior space and capable of being reciprocated, a coil provided on an outer periphery of the interior space, an electric circuit unit to output a voltage, as an electric energy, generated in the coil by reciprocating the permanent magnet, a detection unit to detect a characteristic of the voltage, and a sound generation unit to generate sound that is associated with at least one of a period and amplitude of the voltage based on a result of detection by the detection unit. |
