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Apparatus for detecting capacity of a standby power and method therefor
| Details |
Inventors: Hsu, Hsien-Yueh;
Assignee: ASUSTek Computer Inc. (Taipei, TW)
Primary Examiner: Brown; Glenn W.
Assistant Examiner:
Attorney, Agent or Firm: Rabin & Berdo, P.C.
An apparatus and a method of detecting the capacity of the standby power. First, the components that are supplied with working voltage from the standby power are switched to the main power by a switch circuit. Then a control unit activates a dummy-loading circuit, thereby a coupling a loading device to the standby power. A voltage monitoring circuit monitors variations of the standby power to judge the capacity of the standby power, by which the switch circuit decides whether the standby power is activated or not. When detecting the capacity of the standby power, a switch circuit is needed to prevent variations of the standby power from affecting the normal operation of the essential circuit, and the standby power is supplied as operating power. |
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DETAILED DESCRIPTION Accordingly, the present invention provide an apparatus for detecting capacity of a standby power of a power supply for a computer system and ensure normal operation of the computer system.
By assistance of a program, the user can turn on or turn off an additional function of the computer system.
To achieve these and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the invention provides an apparatus for detecting capacity of a standby power of a power supply.
The apparatus comprises a control unit, a dummy-loading circuit and a voltage monitoring circuit.
The control unit is used for operating the apparatus.
The dummy-loading circuit coupled to the standby power and the control unit is used for providing a load to the standby power under the control of the control unit.
The voltage monitoring circuit coupled to the dummy-loading circuit and the control unit is used for monitoring the standby power through the dummy-loading circuit and for outputting a signal to the control unit.
While the standby power is being detected, the control unit activates the dummy-loading circuit and receives information about variations of the standby power from the signal outputted from the voltage monitoring circuit.
Thus, when the variation of the standby power exceed a prescribed voltage, the capacity of the standby power is not enough.
In the above-described apparatus, the dummy-loading circuit comprises a loading device and a switch.
The loading device is coupled to the standby power through the switch.
The switch is under control of the control unit.
When the switch is turned on, the loading device is coupled to the standby power and is the load of the standby power.
When the switch is turned off, the loading device is separated from the standby power and is not the load of the standby power.
A subsystem of the computer comprises a first subsystem and a second subsystem.
The first subsystem is used for normal operation of the computer system, wherein operating power of the first subsystem is provided by the standby power
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