Inventec Appliances Corporation

Chicony Power Technology Co., Ltd.

Inventec Appliances (Pudong) Corporation

Inventec Appliances (Shanghai) Co., Ltd.

Ming-Tsan Lin

Hsin-Chang Yu

Wen-Nan Huang

Shiu-Hui Lee

Ching-Guo Chen

Chih-Ming Yu

Hsiao-Chih Ku

Cheng-Hsien Hsiao

Chang-Li Hsieh

A power supply system for outputting current to a load comprises a first power supply, a plurality of DC/DC converters connected to the first power supply in parallel, a second power source connected in parallel with the DC/DC converters and coupled to the load and a current sensor. The current sensor is configured between the first power supply and a low potential side of input terminals of the plurality of DC/DC converters, and the current sensor is configured for sensing a current information of the power supply system. When the power supply system outputs current to the load or the load can be charged back to the power supply system, the current sensor can measure the current information of each DC/DC converter through the current change of the switching states of the power switches inside the DC/DC converters, and has a simple circuit structure.

Power supply system

A dual battery power management system, its battery controller and method for controlling the same have been provided. The dual battery power management system includes a load module, a battery controller, a first battery and a second battery. The battery controller is electrically connected to the load module for receiving an electrical requirement demanded by the load module. The battery controller is provided with a DC-DC converter and a serial-parallel switch. The first battery is employed to provide a first input voltage which is converted to a converted DC voltage by the DC-DC converter. The second battery is electrically connected to the serial-parallel switch and is used to provide a second input voltage. Upon the aforementioned electrical requirement, the battery controller controls the series-parallel switch to be operated at a serial mode or a parallel mode.

Dual battery power management system and its battery controller and method for controlling the same

A power supply controlling system is configured to supply power to a load and includes a first power supply device having a first outputting voltage and current to the load, a second power supply device having a second outputting voltage and current to the load, and a buck converter which is selectively connected to the first power supply device or the second power supply device first and is then connected in parallel with the power supply device without converter and the load. The buck converter is selectively connected to the power supply device with a higher voltage, and controls the output voltage of the converter to make it conform to the voltage of the other power supply device, so as to connect the two power supply devices in parallel and output current to the load.

Power supply controlling system

An AC inrush current testing device is disclosure. The AC inrush current testing device includes a grid voltage peak point calculator, a grid voltage period and timing detector, a switch, an autotransformer, and a main relay. The grid voltage period and timing detector is connected to an AC power source and the grid voltage peak point calculator. A movable contact of the switch is connected to the AC power source. A first winding of the autotransformer is connected to the AC power source, a second winding of the autotransformer, and a first stationary contact of the switch. A third winding of the autotransformer is connected to a second stationary contact of the switch and the second winding. The main relay is electrically connected to the grid voltage peak point calculator, the second winding, and the third winding. A method for testing AC inrush current is further disclosed.

AC inrush current testing device

An AC input voltage detecting device includes a first input, a second input, a determining unit, a first voltage-detecting unit, and a second voltage-detecting unit. The first input and the second input are electrically connected to a neutral line and a live line of an AC power, respectively. The determining unit includes a first power switch, a second power switch, and an output, the first and second power switch are electrically connected in series, and the output is coupled to the second power switch. The first voltage-detecting unit is electrically connected to the first input and the first power switch, the second voltage-detecting unit is electrically connected to the second input and the second power switch. A signal for indicating that the AC power supplies normally is generated from the determining unit while the voltages conducted by the live line and the neutral line are normal.

Alternating current input voltage detecting device

A power supply device includes an output port, a transformer, a power switch, a current sensor, a voltage-dividing controller, a voltage-feedback unit, a voltage comparator, a main controller, and a pulse width modulator. The transformer has two inductances. The power switch is electrically connected to a primary winding of the transformer, the pulse width modulator, and the current sensor coupled to the voltage-dividing controller. The voltage-feedback unit is electrically connected to the voltage-dividing controller, the voltage comparator, and the output port. The main controller is coupled to the pulse width modulator and the voltage comparator.

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Taipei, Taiwan

Ming-Tsan Lin