Power supply circuit for motherboard
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorKe-You Hu
Life of this patent
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Abstract
A power supply circuit includes a first resistor and a first capacitor. One end of the first resistor is connected to a system power. The other end of the first resistor is connected to the anode of the first capacitor. The cathode of the first capacitor is connected to a digital analog converter A (DACA) VDD pin of a north bridge on a motherboard. The system power provides a stable power signal for the DACA VDD of the north bridge via the first resistor and the first capacitor. Thereby the display no longer ripples when the resolution of the display is adjusted to a certain value.
Claims12
A power supply circuit, comprising:
- a first resistor comprising:
- a first end connected to a system power;
- and
- a second end;
- and
- a first capacitor comprising:
- a first end connected to the second end of the first resistor;
- and
- a second end connected to a digital analog converter A (DACA) analog output pin, of a north bridge on a motherboard;
- wherein the system power provides a stable power signal for the DACA analog output pin of the north bridge via the first resistor and the first capacitor.
Dependencies are inferred from the claim text.