| 摘要 |
PURPOSE: A power supply unit, a laser pointer, and a controlling method of the power supply unit are provided to be operated by a special sound source and a circuit by being inserted into a sound output terminal of an electronic device like a mobile phone, a smart phone, an MPEG audio layer-3 (MP3) player, and an audio device. CONSTITUTION: A first terminal (61) receives any one of a left sound signal and a right sound signal. A second terminal (62) receives the rest one of the left sound signal and the right sound signal. A boosting circuit unit increases the voltage of the left sound signal and the right sound signal which are provided from the first terminal and the second terminal. The boosting circuit unit supplies the left sound signal and the right sound signal to an electronic module. A phase of any one of the left sound signal and the right sound signal is faster or slower than a phase of the other one. |
