Abstract: There is provided an electronic device including a battery, a first chip, a second chip and a communication bridge connecting the first chip and the second chip. The first chip is used to detect a voltage of the battery to determine a charging current, and to transmit information associated with the charging current to the second chip to cause a charging curve of the second chip to match that of the first chip.

Abstract: There is provided an electronic device including a battery, a first chip, a second chip and a communication bridge connecting the first chip and the second chip. The first chip is used to detect a voltage of the battery to determine a charging current, and to transmit information associated with the charging current to the second chip to cause a charging curve of the second chip to match that of the first chip.

Abstract: The present invention discloses a battery powered apparatus with the circuit of integrated power management and charger unit. It mainly comprises a power management and charger unit, a battery powered device, a battery and an adaptor. By integrating the charger unit, the power switch and the programmable current source to the micro-processor, the micro-processor can properly control the power supplied from the adaptor to the battery under the charging mode operation, which further derives a smoother curve of charging current.

Abstract: The present invention discloses a battery powered apparatus with the circuit of integrated power management and charger unit. It mainly comprises a power management and charger unit, a battery powered device, a battery and an adaptor. By integrating the charger unit, the power switch and the programmable current source to the micro-processor, the micro-processor can properly control the power supplied from the adaptor to the battery under the charging mode operation, which further derives a smoother curve of charging current.

Abstract: A charge control system for lithium battery using pulse width modulation is provided, and it detects the existing voltage of the charging lithium battery by a voltage detector and passes this voltage value to a microprocessor preset in the hand-held apparatus. Thus, the microprocessor can decide the applicable charge stage and confirm the status of the charging battery depending on the different Voltage values in real time. Next, the microprocessor controls a control unit by a pulse width modulation signal to modulate the power-source, which comes from an adaptor, as a constant current or a constant voltage to charge the battery. Accordingly, the charge process is completed by repeating the voltage detection and the duty cycle modulation of the control unit.

Abstract: A charging control method of lithium battery is provided. At the beginning, a voltage detect circuit detects the current voltage of the battery and the microprocessor decides a proper charging stage, and then modulates a power as an appropriate constant current or an appropriate constant voltage by the pulse width modulation (PWM) function of the microprocessor to charge the battery. Next, repeatedly detects the voltage, decides the charging stage, charges the battery, compares the voltage of the battery with the default voltage . . . and so on until the charging process is completed.

Abstract: A charging control system for lithium battery is provided, and it detects the existing voltage of the charging lithium battery by a voltage detector and passes this voltage value to a microprocessor preset in the hand-held apparatus. Thus, the microprocessor can decide the applicable charge stage and confirm the status of the charging battery depending on the different voltage values in real time. Next, the microprocessor controls a control unit by a pulse width modulation signal to modulate the power-source, which comes from an adaptor, as a constant current or a constant voltage to charge the battery. Accordingly, the charge process is completed by repeating the voltage detection and the duty cycle modulation of the control unit.

Abstract: A method for re-testing semiconductor device includes following processes: (1) providing a first carrier for accommodating semiconductor devices which have been tested; (2) taking the semiconductor devices out from the first carrier and placing them according to the information of a fist map by a pick-and-place machine, wherein the information of the first map has the coordinates of the positions of the film frame where the semiconductor is to be placed; (3) placing the film frame with the semiconductor devices placed thereon to a testing machine, and re-testing the semiconductor devices according to the information of the first map by the tester; (4) placing the film frame with the semiconductor devices attached thereon to a pick-and-place machine, and taking the semiconductor devices out according to the result of the retesting from the film frame, and placing the semiconductor devices on at least one carriers.