| 摘要 |
PURPOSE: A circuit for charging battery by converting radio frequency into DC voltage is provided to charge a battery in anywhere except a designated position without alternating current, thereby reducing power consumption. CONSTITUTION: A circuit for charging battery by converting radio frequency into DC voltage comprises a wave detection unit, a rectification unit, a charge unit and a battery. The wave detection unit is connected to an antenna and the rectification unit. The rectification unit is connected to the charge unit. The charge unit is connected to the battery. The radio frequency is received through the antenna. The received radio frequency is rectified by the rectification unit and is converted into a direct-current voltage, which is elevated till charger voltage required to the battery.
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