Device for monitoring voltage of motherboard
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorJIN-LIANG XIONG
Life of this patent
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Abstract
A device for monitoring a voltage of a motherboard includes a first monitoring circuit, a second monitoring circuit, and an indicating circuit. The first and monitoring circuits are connected to output a control voltage. A value of the control voltage is determined according to a value of the voltage of the motherboard. The control voltage is reduced to control the indicating circuit. The indicating circuit indicates whether the voltage of the motherboard is normal.
Claims14
A device for monitoring a voltage of a motherboard, the device comprising:
- a first monitoring circuit outputting a first voltage in response to the voltage of the motherboard being higher than an upper limit voltage;
- a second monitoring circuit outputting the first voltage in response to the voltage of the motherboard being lower than a lower limit voltage;
- a voltage reduction circuit reducing the first voltage;
- and
- an indicating circuit indicating the voltage of the motherboard being abnormal in response to receipt of the reduced first voltage.
A device for monitoring a voltage of a motherboard, the device comprising:
- a first monitoring circuit to receive the voltage of the motherboard, and give an alarm in response to the received voltage being higher than a first predetermined voltage;
- a second monitoring circuit to receive the voltage of the motherboard, and give an alarm in response to the received voltage being lower than a second predetermined voltage;
- an output of the second monitoring circuit being connected to an output of the first monitoring circuit, a node between the outputs of the first and second monitoring circuits outputting a first voltage in response to the voltage of the motherboard being lower than the second predetermined voltage or higher than the first predetermined voltage, the node between the outputs of the first and second monitoring circuits outputting a second voltage in response to the voltage of the motherboard being higher than the second predetermined voltage and lower than the first predetermined voltage;
- a voltage reduction circuit reducing the first or second voltage outputted from the node;
- and
- an indicating circuit indicating the voltage of the motherboard being abnormal in response to receipt of the reduced first voltage, and indicating the voltage of the motherboard being normal in response to receipt of the reduced second voltage.
Dependencies are inferred from the claim text.