CN201207584Y

CN201207584Y - Time-delay protection circuit for circuit breaking

Info

Publication number: CN201207584Y
Application number: CNU2008200353662U
Authority: CN
Inventors: 王占洋
Original assignee: Mitac Technology Kunshan Co Ltd
Current assignee: Mitac Technology Kunshan Co Ltd
Priority date: 2008-04-29
Filing date: 2008-04-29
Publication date: 2009-03-11
Anticipated expiration: 2018-04-29

Abstract

The utility model discloses a power-off delay protective circuit, and the circuit comprises a storage power supply, the storage power supply and a power supplier are connected in parallel to an input end of a power supply change-over circuit, an output end of the power supply change-over circuit is respectively coupled with a universal serial bus change-over circuit and a main board circuit, an output end of the universal serial bus change-over circuit is coupled at a universal serial bus interface of the main board circuit, and the main board circuit is communicated with an operating system. The storage power supply supplies power to the main board circuit and provides the electric power to the operating system for backing up the current data the instant the power supplier stops power supply, so as to prevent the data loss phenomenon caused by sudden power cut, and the operation of data backup is completed by the operating system automatically, and is simple and convenient.

Description

Outage delay protection circuit

[technical field]

The relevant a kind of outage delay protection circuit of the utility model refers in particular to a kind ofly in the civil power sudden power, provides electric power in mainboard by electrical storage device, preserves after the current data outage delay protection circuit of shutdown again for operating system.

[background technology]

Increase along with power consumption, the electric power system of Utilities Electric Co. the machine phenomenon occurs jumping automatically because of the user's that can't load the power consumption that makes, very easily electric equipment products are caused damage, especially the computer in using, because sudden power, the loss of data of feasible outage pre-treatment, for addressing this problem, the computer user can be connected with computer or in computer-internal the electric power storage battery is set and connects computer motherboard by uninterrupted power supply (ups) Unity, thereby when sudden power, give computer with the supply of electric power of pre-stored, cushion the time of the current deal with data of a storage backup.But above-mentioned way has following shortcoming: one, uninterrupted power supply costs an arm and a leg, and can't popularize the computer in the general user in a large number; Two, the electric power storage battery only is the computer motherboard power supply, and is not monitor power supply, therefore can't operate the action of preserving Backup Data.

In view of this, be necessary to provide a kind of outage delay protection circuit in fact, provide electric power during outage, preserve current data for operating system in mainboard.

[summary of the invention]

Therefore, problem to be solved in the utility model provides a kind of outage delay protection circuit, provides electric power in motherboard circuit during with the realization outage, preserves the purpose of current data automatically for operating system.

For reaching above-mentioned purpose; the utility model proposes a kind of outage delay protection circuit; this circuit comprises a storage power; this storage power and a power supply unit are connected in parallel in the input of a power-switching circuit; the output of this power-switching circuit be coupled respectively a USB change-over circuit and a motherboard circuit; the output of this USB change-over circuit is coupled in the USB (universal serial bus) of this motherboard circuit, and this motherboard circuit exchanges with operating system.

Compared with prior art, it is the moment that power supply unit is stopped power supply that the utility model disconnects at civil power, by storage power is the motherboard circuit power supply, provide electric power for operating system backup current data, prevent the loss of data phenomenon that causes because of sudden power, and the Backup Data action is finished automatically by the storage administration of operating system, and is simple and convenient.

[description of drawings]

Fig. 1 shows circuit frame figure of the present utility model.

[embodiment]

Please refer to Fig. 1, the utility model comprises a storage power 2, the power supply unit 1 of this storage power 2 and computer is connected in parallel in the input of a power-switching circuit 3, the output of this power-switching circuit 3 be coupled respectively a USB (USB) change-over circuit 4 and a motherboard circuit 5, the output of this USB change-over circuit 4 is coupled in the USB (universal serial bus) 51 of this motherboard circuit 5, and this motherboard circuit 5 exchanges data-signal with operating system 6 communications.

More than, this power-switching circuit 3 comprises a field effect transistor 31 (MOSFET), the source S of this field effect transistor 31 connects this power supply unit 1, the drain D of this field effect transistor 31 connects this motherboard circuit 5, the grid G of this field effect transistor 31 connects this storage power 2, when the grid G of field effect pipe 31 was triggered by an appropriate voltage, the source S and the drain D of this field effect transistor 31 were conducted, and made power supply unit 1 electric power can be supplied to motherboard circuit 5 by field effect transistor.

Under default situations, for example during mains-supplied system normal power supply, power-switching circuit 3 is communicated with power supply unit 1 and motherboard circuit 5, by power supply unit 1 is motherboard circuit 5 power supplies, simultaneously, power-switching circuit 3 sends a power supply normal signal to USB change-over circuit 4, and this USB change-over circuit 4 outputs one operate as normal signal is transferred to operating system 6 by motherboard circuit 5, and operating system 6 continues current working state; Under improper situation, for example during the mains-supplied system cut-off, power-switching circuit 3 is communicated with storage power 2 and motherboard circuit 5, by storage power 2 is motherboard circuit 5 power supplies, simultaneously, power-switching circuit 3 sends an abnormal electrical power supply signal to USB change-over circuit 4, this USB change-over circuit 4 outputs one silence signal is transferred to operating system 6 by motherboard circuit 5, operating system 6 starts storage administration immediately with the basic input/output system memory (BIOS ROM) of storage backup work at present data in motherboard circuit 6, when the action of store backup data is finished, one backup of operating system 6 feedbacks is finished signal by motherboard circuit 5, USB change-over circuit 4 sends power-switching circuit 3 to, these power-switching circuit 3 disconnection storage powers 2 are connected with motherboard circuit 5, i.e. safety shutdown.

This storage power 2 also can be connected to the erasable random asccess memory of COMS (RAM) chip, for this chip provides lasting power supply, is used for the hardware configuration of the long-term uninterrupted BIOS of preservation and the user setting to some parameter.

This storage power 2 also can be integrated in the power supply unit 1 except being the individual components.

Claims

1, a kind of outage delay protection circuit; this circuit comprises a storage power; this storage power and a power supply unit are in parallel; it is characterized in that: this storage power and this power supply unit are connected to the input of a power-switching circuit; the output of this power-switching circuit be coupled respectively a USB change-over circuit and a motherboard circuit; the output of this USB change-over circuit is coupled in the USB (universal serial bus) of this motherboard circuit, and this motherboard circuit exchanges with the operating system communication.

2, outage delay protection circuit as claimed in claim 1; it is characterized in that: this power-switching circuit comprises a field effect transistor; the source electrode of this field effect transistor connects this power supply unit, and the drain electrode of this field effect transistor connects this motherboard circuit, and the grid of this field effect transistor connects this storage power.

3, outage delay protection circuit as claimed in claim 1, it is characterized in that: this storage power also is connected to CMOS random asccess memory chip.

4, outage delay protection circuit as claimed in claim 1, it is characterized in that: this storage power is integrated in the power supply unit.