CN203217472U

CN203217472U - Computer power circuit

Info

Publication number: CN203217472U
Application number: CN 201320125926
Authority: CN
Inventors: 李咸浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-09-25
Anticipated expiration: 2023-03-19

Abstract

The utility model discloses a computer power circuit which is characterized by mainly comprising a delay module and an amplification circuit, wherein the delay module is connected between a power module and a South Bridge module and used for receiving a power enable signal sent by the power module and sending a primary power enable signal and a secondary power enable signal to the South Bridge module; the amplification circuit is connected between the delay module and the power module; the power module only comprises a primary power supply and does not comprise a secondary power supply; the delay module consists of an RC delay circuit and two Schmitt inverters; the RC delay circuit is connected between the two Schmitt inverters in series. The computer power circuit has the advantages as follows: no startup button is arranged, so that the related manufacturing cost is saved and the design complexity is lowered; at the same time, no secondary power supply is arranged, so that the power is saved, the service life of a computer local circuit is prolonged and the potential accidents such as fire can not occur easily.

Description

Power circuit for computer

Technical field

The utility model relates to computer realm, and in particular the power circuit of computing machine relates to a kind of power circuit for computer under the advanced processes mode power management more specifically.

Background technology

The active computer mainboard generally all adopts AT Extend (ATX) powder source management mode, under this pattern, when computing machine is switched on, at once produce an accessory power supply, and when computing machine need be started shooting, the user must click the start button earlier could normal start computer system, and the user just can control computing machine and carries out operate as normal then.

Because existing computing machine under "on" position, has accessory power supply, under not computed situation, the local circuit of power supply is still worked, be the hidden danger that there is the breaking out of fire accident again in electricity wasting, and be engraved in work during local circuit, can influence the serviceable life of computing machine; Simultaneously, only need server or the industrial computer of on off state for some, increase a start button, can increase the manufacturing cost of computing machine undoubtedly, and make its design more complicated.

In sum, how to solve the existing above-mentioned strong point of active computer, become people in the industry's problem anxious to be solved.

The utility model content

The purpose of this utility model provides a kind of power circuit for computer, and computing machine does not need the button of starting shooting, and can start after plugging in, and need not accessory power supply.

For achieving the above object, the technical solution of the utility model is as follows:

Power circuit for computer of the present utility model comprises at least: a power module, be connected with extraneous power supply, and the operating voltage of power circuit is provided; One south bridge module is drawn with power module, receives the output voltage of power module; One north bridge module is connected with the south bridge module, receives Peripheral Component Interconnect that the south bridge module sends (PCIRS) signal that resets; One Postponement module is connected between power module and the south bridge module, receives the power enable signal that power module sends, and sends the primary power enable signal and the accessory power supply enable signal is given the south bridge module.

Wherein, described power module includes only primary power, does not have accessory power supply; Described Postponement module is made up of a RC delay circuit and two Schmidt reversers, and wherein, the RC delay circuit is series between two Schmidt reversers; Described RC delay circuit is made up of a resistance, a diode and an electric capacity, and resistance is with after diode is in parallel and capacitances in series; Described Postponement module is composed in series successively by reset chip and two Schmidt reversers.

The utility model has the advantages that: the button of not starting shooting, save relevant manufacturing cost, reduced the complicacy of design; Simultaneously, do not have accessory power supply, economize on electricity increases the local circuit of computing machine serviceable life, is difficult for accident potential such as breaking out of fire.

Description of drawings

Fig. 1 is schematic diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model;

Fig. 3 is circuit theory diagrams of the present utility model.

Embodiment

According to accompanying drawing the utility model is described in further detail below:

A kind of power circuit for computer as shown in Figure 1, mainly comprise a Postponement module, be connected between power module and the south bridge module, the power supply that the reception power module sends makes signal, and send primary power enable signal and accessory power supply enable signal and give the south bridge module, one amplifying circuit, this amplifying circuit is connected between Postponement module and the power module.Described Postponement module is made up of a RC delay circuit and two Schmidt reversers, and wherein, the RC delay circuit is series between two Schmidt reversers.

Described RC delay circuit is made up of at least one resistance, a diode and an electric capacity, and resistance is with after diode is in parallel and capacitances in series.

Also comprise: a power module, be connected with extraneous power supply, the operating voltage of power circuit is provided; One south bridge module is connected with power module, receives the output voltage of power module; One north bridge module is connected with the south bridge module, receives the PCI reset signal that the south bridge module is sent.

Also comprise a clock circuit, it is connected with power module, mainly comprise one first phase-locked loop circuit, one second phase-locked loop circuit, one first frequency divider, one second frequency divider and a clock register, described first, second phase-locked loop circuit is used for receiving an external timing signal, and exports first, second pulse signal consistent with described external timing signal phase place respectively.

Described first, second frequency divider carries out frequency division to described first, second pulse signal respectively, and exporting a cpu clock signal and a bus clock signal respectively, described cpu clock signal is in order to the frequency of operation of the central processing unit of controlling a computing machine.

Referring to Fig. 2, be the Postponement module circuit diagram of the utility model one embodiment.This Postponement module mainly is made of a RC delay circuit and two Schmidt reversers.Wherein, the RC delay circuit is series between two Schmidt reversers.This RC delay circuit is made of a resistance R 138, a diode D11 and an electric capacity, and diode is with after resistance is in parallel and capacitances in series.

Power enable signal through behind the Schmidt reverser through the RC delay circuit, produce the time delay that needs, and then pass through Schmidt reverser with signal restoring and shaping, and send the accessory power supply enable signal and give south bridge module (not shown), finish the effect of Postponement module.

Referring to Fig. 3, be the Postponement module circuit diagram of another embodiment of the utility model.This Postponement module mainly is followed in series to form by reset chip and two Schmidt reversers.Power enable signal is sent the accessory power supply enable signal and is given south bridge module (not shown) through resetting chip after the time delay that generation needs, finish the effect of Postponement module.

Utilize power circuit for computer of the present utility model, computing machine does not need the button of starting shooting, easy to use, after plugging in, need not accessory power supply can start, for some server or industrial computers that only needs on off state, reduced its manufacturing cost, reduced the hidden danger of electric leakage fire etc.

Though the utility model with preferred embodiment openly as above; but it is not in order to limit the utility model; any person skilled in the art; in not breaking away from the utility model spirit and scope; all can do various changes and modification, therefore protection domain of the present utility model should be with being as the criterion that claims were defined.

Claims

1. power circuit for computer, it is characterized in that, mainly comprise: a Postponement module, be connected between power module and the south bridge module, the power supply that the reception power module sends makes signal, and send primary power enable signal and accessory power supply enable signal and give the south bridge module, an amplifying circuit, this amplifying circuit is connected between Postponement module and the power module.

2. power circuit for computer according to claim 1 is characterized in that, described Postponement module is made up of a RC delay circuit and two Schmidt reversers, and wherein, the RC delay circuit is series between two Schmidt reversers.

3. power circuit for computer according to claim 2 is characterized in that, described RC delay circuit is made up of at least one resistance, a diode and an electric capacity, and resistance is with after diode is in parallel and capacitances in series.

4. power circuit for computer according to claim 1 is characterized in that, also comprises: a power module, be connected with extraneous power supply, and the operating voltage of power circuit is provided; One south bridge module is connected with power module, receives the output voltage of power module; One north bridge module is connected with the south bridge module, receives the PCI reset signal that the south bridge module is sent.

5. power circuit for computer according to claim 1, it is characterized in that, also comprise a clock circuit, it is connected with power module, mainly comprise one first phase-locked loop circuit, one second phase-locked loop circuit, one first frequency divider, one second frequency divider and a clock register, described first, second phase-locked loop circuit is used for receiving an external timing signal, and exports first, second pulse signal consistent with described external timing signal phase place respectively.