Cyberpower Systems, Inc.

Chun-Shih Yi

Lien-Hsun Ho

Yi-Chang Chou

A universal series bus (USB) power supply has a DC power source, a USB power interface and a voltage modulation module. The USB power interface is for connecting to an electronic device that stores a default D+ voltage and a default D&#x2212; voltage. The voltage modulation module connects to and outputs signals to the D+ and D&#x2212; terminals of the USB power interface. If voltage levels of the output signals are not respectively identical to the default D+ and D&#x2212; voltages, the voltage modulation module changes the voltage levels of the signals output to the D+ and D&#x2212; terminals of the USB power interface until the voltage levels of the output signals are respectively identical to the default D+ and D&#x2212; voltages. Therefore, the USB power supply may be applied to any kind of electronic device that is charged over a USB interface.

Growing community of inventors

Taipei, Taiwan

Chun-Shih Yi