| 摘要 |
<p>Stand-by power for electronic devices is reduced. A capacitor (1) is connected with an AC power supply (6) to provide a standby DC power supply (10) using the leading current component flowing through the capacitor. When infrared commands are used, the capacitor is connected in parallel with another capacitor (3) to increase the current output capability of the DC power supply, and an AC switching element (4) is maintained in ON state.</p> |
