Hon Hai Precision Industry Co., Ltd.

Yi-Bin Hwang

Chen-Hsiang Lin

Fang-Ta Tai

Teng-Feng Zou

Jui-Ting Hung

Li-Chung Sun

A power adapter for an electronic device selectively works in different modes according to a working state signal of the electronic device. When the electronic device is powered off or on with a battery in a determined charge state, the power adapter controls a relay to turn off the relay to disconnect power to the electronic device.

Power adapter and power supply method thereof

A control circuit for a switching power supply (SPS) includes power input and output interfaces, a relay, a relay driving circuit, a microprocessor, and an alternating current/directing current (AC/DC) converter. The power input interface receives an external alternating current (AC) power signal, and transmits the AC power signal to the SPS via the power output interface. The AC/DC converter transforms the AC power signal into a direct current (DC) power signal to supply for the relay, the relay driving circuit, and the microprocessor. When a computer is turned on, the microprocessor sends a first control signal to control the relay driving circuit to drive the relay to connect the power input and output interfaces. When the computer is turned off, the microprocessor sends a second control signal to control the relay driving circuit to drive the relay to cut off connection between the power input and output interfaces.

Control circuit for switching power supply

A system with at least two basic input-output system (BIOS) memories includes a chip unit, a control unit, and two or more BIOS memories. The chip unit includes a control pin. The control unit includes an enable pin and N output pins. The enable pin of the control unit is connected to the control pin of the chip unit. Each of the N BIOS memories is connected to one of the N output pins of the control unit correspondingly. The chip unit is configured to start the control unit. The control unit is configured to start the N BIOS memories according to voltages of the output pins of the control unit. N is an integer greater than one.

Growing community of inventors

Taipei Hsien, Taiwan

Yi-Bin Hwang