Drive circuit of computer system for driving a mode indicator
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsTong Zhou, Jia-Hui Tu
Life of this patent
Estimating the term…
Abstract
A drive circuit of a computer system is for driving a mode indicator. The computer system includes a first port and a second port. The mode indicator includes a first receiving end and a second receiving end. The drive circuit includes a first input end connected to the first port, a second input end connected to the second port, a first output end connected to the first receiving end, a second output end connected to the second receiving end. A power supply is connected to the first input end and the second input end via a first resistor and a second resistor respectively. The mode indicator is dichromatic and has two LEDs emitting non-matching colored light.
Claims16
A drive circuit of a computer system for driving a mode indicator, the computer system comprising a control chip with a first port and a second port, the mode indicator comprising a first receiving end and a second receiving end, the drive circuit comprising:
- a first input end adapted to connect to the first port;
- a second input end adapted to connect to the second port;
- a first output end adapted to connect to the first receiving end;
- a second output end adapted to connect to the second receiving end;
- a first power supply and a second power supply, the second power supply connected to the first input end and the second input end via a first resistor and a second resistor respectively;
- a first transistor having a base connected to the first input end, a collector connected to the first output end and the first power supply respectively, and an emitter connected to the ground;
- and
- a second transistor having a base connected to the second input end, a collector connected to the second output end and the first power supply respectively, and an emitter connected to the ground.
A drive circuit of a computer system for driving a mode indicator, the computer system computer comprising a control chip with a first port and a second port, the mode indicator comprising a first receiving end and a second receiving end, the drive circuit comprising:
- a first switch controlled by the first port of the control chip and connected between a first power supply and the ground for controlling the path receiving the power to be forwarded to the first receiving end;
- a second switch controlled by the second port of the control chip and connected between the first power supply and the ground for controlling the path receiving the power to be forwarded to the second receiving end;
- and
- a second power supply connected to the first port and the second port via a first resistor and a second resistor respectively.
A circuit assembly for indicating statuses of an electronic system, comprising:
- a plurality of indicators definably corresponding to statuses of an electronic system;
- a power supply capable of powering said plurality of indicators;
- a first switch electrically connectable between said plurality of indicators and said power supply, said first switch capable of accepting a controllable output voltage signal from said electronic system and selectively electrically connecting said plurality of indicators with said power supply according to said controllable signal so as to indicate one status of said electronic system by means of said plurality of indicators;
- and
- a second switch electrically connectable between said plurality of indicators and said power supply beside said first switch, said second switch capable of accepting another controllable output voltage signal from said electronic system and selectively electrically connecting said plurality of indicators with said power supply according to said another controllable signal so as to indicate another status of said electronic system by means of said plurality of indicators.
Dependencies are inferred from the claim text.