| 摘要 |
PROBLEM TO BE SOLVED: To provide a power source-free apparatus for intermittently producing a striking energy capable of intermittently producing an energy such as an impulsive sound without requiring a power source. SOLUTION: This power source-free apparatus for intermittently producing a striking energy is obtained by charging a capacitor 26 with the first solar cell 24, boosting the output voltage of the solar cell 10, charging another capacitor 16, producing a pulsating current with a discharging means 14 for starting the discharge when the terminal voltage exceeds a prescribed value, amplifying the signal with an amplifier 20 operable by receiving the powder feed, driving a speaker 22 and intermittently producing an impulsive sound. |
