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Power supply selection circuit, host, and combination of computer and peripheral

A technology for power supply selection and external equipment, applied in computing, data processing power supply, electrical digital data processing and other directions, can solve problems such as troublesome use, and achieve the effect of convenient use

Inactive Publication Date: 2016-10-05
ENNOCONN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are generally two kinds of output devices connected to the communication port of the existing computer, one does not need power supply, such as a mouse, and the other needs to be powered by the output port, such as a printer. Different external power supply, troublesome to use

Method used

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  • Power supply selection circuit, host, and combination of computer and peripheral
  • Power supply selection circuit, host, and combination of computer and peripheral
  • Power supply selection circuit, host, and combination of computer and peripheral

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Embodiment Construction

[0016] Such as Figure 1-4 As shown, it is a preferred implementation mode of the power supply selection circuit of the present invention. The BIOS controls the RI signal of the external device 110 (such as a modem) to be input to the computer host 100 through two control signals GPIO40 and GPIO41 or controls the computer host 100 to send external devices 120, 130 , 140 (such as stereos, printers, scanners, etc.) output 5V, 12V or 24V voltage. In this embodiment, the RI signal is a ringing indication signal when the external device 110 is a modem, and the RI signal is input through the ninth pin ( COM1A-pin9) for transmission, the host 100 also outputs 5V, 12V or 24V voltage source.

[0017] The power selection circuit includes a signal input control circuit 10 , a power output control circuit 20 and a power output switching circuit 30 . in:

[0018] The signal input control circuit 10 includes an AND gate U1, N-Mental-Oxide-Semiconductor (N-Mental-Oxide-Semiconductor) Q1~...

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Abstract

A power supply selection circuit includes a signal input control circuit, a power output control circuit, and a power output switching circuit. The signal input circuit is for connecting a peripheral to a host in communication. The power output control circuit includes a first output control circuit for outputting a first voltage, a second output control circuit for outputting a second voltage and a third output control circuit for outputting a third voltage. The power output switching circuit is used for switching the voltages of the first output control circuit and the second output control circuit. The power supply selection circuit may select the output voltage and is convenient to use. The invention also provides a host including the power supply selection circuit and a combination of a computer and a peripheral.

Description

technical field [0001] The invention relates to a power selection circuit. Background technique [0002] There are generally two kinds of output devices connected to the communication port of the existing computer, one does not need power supply, such as a mouse, and the other needs to be powered by the output port, such as a printer. It is troublesome to use different external power supplies. Contents of the invention [0003] In view of the above, it is necessary to provide a power selection circuit that provides power to external devices from the output port of the host. [0004] A power selection circuit, including a signal input control circuit, a power output control circuit and a power output switching circuit, the signal input circuit is used to connect external equipment to communicate with a computer host, the power output control circuit includes a first voltage output A first output control circuit, a second output control circuit for outputting the second vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/26
CPCG06F1/26G06F1/3287G06F9/4403G06F1/3296
Inventor 廖佳群
Owner ENNOCONN CORP