CN1409189A - Power detection circuit and its detection method - Google Patents
Power detection circuit and its detection method Download PDFInfo
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- CN1409189A CN1409189A CN 01135383 CN01135383A CN1409189A CN 1409189 A CN1409189 A CN 1409189A CN 01135383 CN01135383 CN 01135383 CN 01135383 A CN01135383 A CN 01135383A CN 1409189 A CN1409189 A CN 1409189A
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Abstract
A power source detecting circuit for power supply of the host plate which has a power supplier to specially provide power for the circuit of the central processor and a DC current convertor to convert the output voltage value of the powr supplier into a preset voltage value for providing the power for the central processor includes a detecting circuit to be electrically connected with the circuit of central processor to detect whether the power supplier is outputting the first voltage value to the host plate or not and also to create a control signal, a controlled switch connected with the second output end of the detecting circuit and the power supplier, the change-oven of the switch to be controlled by the control signal. The second outupt end of power supplier provide the second voltage value to the DC convertor when the detecting circuit does not check out the first voltage value.
Description
Technical field
The present invention relates to power sensor detecting circuit and the method for detecting thereof of a kind of use at computer main frame panel.
Background technology
Progress along with the science and technology epoch, computing machine is used in every field widely, it mainly is to cooperate motherboard to drive other the peripheral running that is equipped with and the application of software by a central processing unit (CPU), so work and the performance demands that can carry out for computing machine now are more and more, it is the rack one's brains purpose desiring to reach of dealer that the effect that computing machine can be carried out progresses greatly day by day always.
Consult Fig. 1, it is the structural representation of nearest Pentium IV central processing unit of releasing of Intel (intel) company and special-purpose ATX thereof (Advanced Technology expanding) motherboard, because 10 performance and the speed function that can carry out of central processing unit are powerful, so need the just enough runnings of the bigger magnitude of current, therefore its special-purpose ATX motherboard 11 is except the supply socket 12 of original confession 20 branch connecting pins (pin) that just have, and setting up a supply socket 13 for 4 branch connecting pins (pin) in addition directly provides 12 volts power supply to use for central processing unit 10 by power supply unit 14.Wherein ATX be in nineteen ninety-five by Intel (intel) the motherboard specification that company worked out, its main change is the joint of serial port, parallel port is built on the motherboard in directly, and power supply also adopts integrated design.
Because previous power supply unit only provides 20 branch connecting pins (pin) to use to motherboard with power supply, 12 volts of 4 branch connecting pins (pin) to central processing unit 10 are not provided specially, therefore when the user is replaced with pentium IV central processing unit and special ATX motherboard thereof with the computing machine outfit, must use the special power supply unit of pentium IV could drive central processing unit and motherboard running, so will give up power supply unit originally, cause the wasting of resources and increase user's update calculation machine required cost when being equipped with.
Summary of the invention
The objective of the invention is for a kind of power sensor detecting circuit and method for detecting thereof are provided, making needs or not use its special-purpose power supply unit for the motherboard of a central processing unit by the special power supply of a power supply unit, just can drive the running of central processing unit and motherboard, required cost when being equipped with in order to reduce the wasting of resources and to reduce user's update calculation machine.
The present invention realizes like this.The invention provides a kind of power sensor detecting circuit, be applicable to the power supply of motherboard, having one on the motherboard needs by the circuit of the special power supply of a power supply unit to a central processing unit, and the magnitude of voltage of this power supply unit being exported by a direct current transducer converts a scheduled voltage to offer the required power supply of this central processing unit.This power sensor detecting circuit comprises: a circuit for detecting, be electrically connected on said need and give the circuit of said central processing unit by the special power supply of power supply unit, whether export one first magnitude of voltage to motherboard in order to detect said power supply unit, and produce a control signal; An and controlled switch, be electrically connected on second output terminal of circuit for detecting and said power supply unit, the switching of switch is done in the control of suspension control signal, and when circuit for detecting does not detect first magnitude of voltage, provide one second magnitude of voltage to said direct current transducer by second output terminal of said power supply unit.
Circuit for detecting can be detected said power supply unit by a reverser and whether import first magnitude of voltage in the power sensor detecting circuit, and produces control signal, and said reverser can be that field-effect transistor (MOSFET) is partly led in a burning.
First magnitude of voltage can be 12 volts in the power sensor detecting circuit.
First magnitude of voltage can be by first output terminal output of said power supply unit in the power sensor detecting circuit.Said controlled switch can be a burning and partly leads field-effect transistor (MOSFET) in the power sensor detecting circuit.
Second magnitude of voltage can be 5 volts in the power sensor detecting circuit.
Electric power detecting method of the present invention, be applicable to the power supply of a motherboard, having one on the motherboard needs by the circuit of the special power supply of a power supply unit to a central processing unit, and the magnitude of voltage of said power supply unit being exported by a direct current transducer converts a scheduled voltage to offer the required power supply of said central processing unit, its step comprises: detect said power supply unit and whether export one first magnitude of voltage to motherboard, and produce a control signal; Control signal is controlled the switching of a controlled switch, when not detecting first magnitude of voltage, exports one second magnitude of voltage to said direct current transducer by second output terminal of said power supply unit.
Whether the said power supply unit of detecting is exported one first magnitude of voltage to motherboard and can be carried out by a circuit for detecting in the power sensor detecting circuit.
Circuit for detecting can be detected said power supply unit by a reverser and whether import first magnitude of voltage in the power sensor detecting circuit, and produces control signal.
Said reverser can be a burning and partly leads field-effect transistor (MOSFET) in the power sensor detecting circuit.
Power sensor detecting circuit first magnitude of voltage can be 12 volts.
First magnitude of voltage can be by first output terminal output of said power supply unit in the power sensor detecting circuit.
Said controlled switch can be a burning and partly leads field-effect transistor (MOSFET) in the power sensor detecting circuit.
Second magnitude of voltage can be 5 volts in the power sensor detecting circuit.
The invention will be further described below in conjunction with the drawings and specific embodiments.
The drawing explanation
Fig. 1 is the structural representation of Pentium IV central processing unit and private host plate thereof.
Fig. 2 does not detect the electrical block diagram of this first magnitude of voltage for power sensor detecting circuit of the present invention.
Fig. 3 detects the electrical block diagram of this first magnitude of voltage for power sensor detecting circuit of the present invention.
Fig. 4 is the process flow diagram of electric power detecting method of the present invention.
Fig. 5 is the circuit diagram of power sensor detecting circuit of the present invention.
Among the figure
The supply socket of 10-central processing unit 11-motherboard 12-20 branch connecting pin
The supply socket 20-motherboard of 14-power supply unit 13-4 branch connecting pin
The direct converter of 21-central processing unit 22-power supply unit 23-
24-circuit for detecting 241-flip-flop 25-controlled switch
The supply socket of 26-4 branch connecting pin (pin)
Embodiment
In order to make the ATX power supply unit that has only 20 branch connecting pins (pin) originally also can drive Pentium IV central processing unit and the running of private host plate thereof, the present invention proposes a kind of power sensor detecting circuit and method for detecting thereof.
Consult Fig. 2, Fig. 3, be that power sensor detecting circuit of the present invention does not detect first magnitude of voltage and the electrical block diagram that detects under the first magnitude of voltage situation is arranged, it is applicable to that mainly Pentium IV is in the special motherboard 20 of central processing unit 21, having one on this motherboard 20 needs to provide 12 volts voltage to the circuit of this Pentium IV central processing unit 21 specially by a power supply unit 22, and need will to convert a scheduled voltage (1.75 volts) by the magnitude of voltage that this power supply unit 22 is exported to by a direct current transducer 23 and provide these Pentium IV central processing unit 21 runnings required power supply, this power sensor detecting circuit can comprise: a circuit for detecting 24 and a controlled switch 25.
This circuit for detecting 24, being electrically connected on these need provides one 12 volts voltage to the circuit of this Pentium IV central processing unit 21 specially by power supply unit 22, can be used to detect this power supply unit 22 whether export one first magnitude of voltage (12 volts) to motherboard 20 providing this Pentium IV central processing unit 21 required power supply, and produce a control signal.As for controlled switch 25, be electrically connected on second output terminal of this circuit for detecting 24 and this power supply unit 22, be subjected to this control signal control to decide the switching of its switch.
Consult Fig. 2, Fig. 4, when this circuit for detecting 24 does not detect 12 volts input voltage by the supply socket 26 of 4 branch connecting pins on this motherboard 20, represent that promptly this power supply unit 22 is for only having the ATX power supply unit of 20 branch connecting pins (pin), therefore by the control of the control signal of this control signal with these controlled switch 25 conductings, second output terminal that changes by this ATX power supply unit 22 provides one second magnitude of voltage to this direct current transducer, for 1.75 volts of required voltages of this Pentium IV central processing unit 21.Wherein second output terminal of this ATX power supply unit 22 is exactly its 20 branch connecting pin.And this second magnitude of voltage can be 5 volts.
Consult Fig. 3, Fig. 4, when this circuit for detecting 24 has the supply socket 26 of 4 branch connecting pins from this motherboard 20 to detect 12 volts input voltage, represent that promptly this power supply unit 22 is 12 volts of power supply units of ATX of Pentium IV central processing unit special use, and by the control of this control signal this controlled switch 25 is closed, directly convert 1.75 volts to via this direct current transducer 23 and use for these Pentium IV central processing unit 21 runnings with 12 volts of 12 volts of power supply units outputs of this ATX.
Consult Fig. 5, it is the circuit diagram of power sensor detecting circuit of the present invention, by among the figure as can be known this circuit for detecting 24 can whether import 12 volts of voltages by 4 supply sockets 26 that connect limb (pin) on these motherboards of a reverser 241 detecting, and this control signal that will produce is sent to this controlled switch 25.And can be a burning, this reverser 241 partly leads field-effect transistor (MOSFET).Wherein this controlled switch 25 can be a burning and partly leads field-effect transistor (MOSFET).
Even the present invention can make the motherboard that needs by the special power supply of power supply unit uses for a central processing unit not use its special-purpose power supply unit, also can drive the moving commentaries on classics of central processing unit and motherboard, and can reach the effect that reduces the wasting of resources and reduce user's update calculation machine required cost when being equipped with.
Claims (9)
1. power sensor detecting circuit, be applicable to the power supply of motherboard, having one on the motherboard needs by the circuit of the special power supply of a power supply unit to a central processing unit, and the magnitude of voltage of said power supply unit being exported by a direct current transducer converts a scheduled voltage to offer the required power supply of said central processing unit, power sensor detecting circuit comprises: a circuit for detecting, be electrically connected on said need and give the circuit of said central processing unit by the special power supply of power supply unit, whether export one first magnitude of voltage to motherboard in order to detect said power supply unit, and produce a control signal: and a controlled switch, be electrically connected on second output terminal of circuit for detecting and said power supply unit, be subjected to this control signal control to do the switching of switch, and when circuit for detecting is not detectd first magnitude of voltage, provide one second magnitude of voltage to said direct current transducer by second output terminal of said power supply unit.
2. power sensor detecting circuit according to claim 1 is characterized in that circuit for detecting system detects said power supply unit by a reverser and whether imports first magnitude of voltage, and produces control signal.
3. power sensor detecting circuit according to claim 2 is characterized in that reverser is that field-effect transistor is partly led in a burning.
4. power sensor detecting circuit according to claim 1 is characterized in that the first output terminal output of first magnitude of voltage system by said power supply unit.
5. power sensor detecting circuit according to claim 1 is characterized in that controlled switch is that field-effect transistor is partly led in a burning.
6. electric power detecting method, be applicable to the power supply of motherboard, having one on the motherboard needs by the circuit of the special power supply of a power supply unit to a central processing unit, and convert the magnitude of voltage of said power supply unit output to a scheduled voltage to offer the required power supply of said central processing unit by a direct current transducer, its step comprises:
Detect this power supply unit and whether export one first magnitude of voltage, and produce a control signal to motherboard;
And suspension control signal controls the switching of a controlled switch, and when not detecting first magnitude of voltage, exports one second magnitude of voltage to said direct current transducer by second output terminal of said power supply unit.
7. electric power detecting method according to claim 6 is characterized in that detecting said power supply unit and whether exports one first magnitude of voltage to motherboard and carry out by a circuit for detecting.
8. electric power detecting method according to claim 7 is characterized in that circuit for detecting detects said power supply unit by a reverser and whether import first magnitude of voltage, and produces control signal.
9. electric power detecting method according to claim 6 is characterized in that the first output terminal output of first magnitude of voltage by said power supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01135383XA CN100458655C (en) | 2001-09-28 | 2001-09-28 | Power detection circuit and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01135383XA CN100458655C (en) | 2001-09-28 | 2001-09-28 | Power detection circuit and its detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1409189A true CN1409189A (en) | 2003-04-09 |
| CN100458655C CN100458655C (en) | 2009-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01135383XA Expired - Fee Related CN100458655C (en) | 2001-09-28 | 2001-09-28 | Power detection circuit and its detection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN100458655C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359433C (en) * | 2004-02-12 | 2008-01-02 | 威盛电子股份有限公司 | Instantaneous frequency-based microprocessor power management |
| CN100371902C (en) * | 2004-04-02 | 2008-02-27 | 纬创资通股份有限公司 | Power-supply load simulation device and detest method |
| CN100517178C (en) * | 2005-12-22 | 2009-07-22 | 国际商业机器公司 | Method and apparatus for supplying power to processors in multiple processor systems |
| CN101344810B (en) * | 2007-07-09 | 2010-07-21 | 华硕电脑股份有限公司 | Motherboard and its power supply module |
| CN101989115A (en) * | 2009-07-29 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Power system |
| CN101334687B (en) * | 2007-06-29 | 2011-10-26 | 株式会社东芝 | Information processing apparatus |
| CN102902336A (en) * | 2011-07-29 | 2013-01-30 | 联想(北京)有限公司 | Mainboard and power supply connecting module and electronic equipment thereof |
| CN110223635A (en) * | 2019-06-14 | 2019-09-10 | 京东方科技集团股份有限公司 | Power-supplying circuit, method for controlling power supply and display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2237866Y (en) * | 1995-01-23 | 1996-10-16 | 大众电脑股份有限公司 | Host machine board sub-circuit board type central processing unit power supply apparatus |
| CN2338794Y (en) * | 1997-01-13 | 1999-09-15 | 梅捷企业股份有限公司 | Arrangement for automatically distinguishing and switching voltage of power supply of CPU single power/double power supply CPU |
-
2001
- 2001-09-28 CN CNB01135383XA patent/CN100458655C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359433C (en) * | 2004-02-12 | 2008-01-02 | 威盛电子股份有限公司 | Instantaneous frequency-based microprocessor power management |
| CN100371902C (en) * | 2004-04-02 | 2008-02-27 | 纬创资通股份有限公司 | Power-supply load simulation device and detest method |
| CN100517178C (en) * | 2005-12-22 | 2009-07-22 | 国际商业机器公司 | Method and apparatus for supplying power to processors in multiple processor systems |
| CN101334687B (en) * | 2007-06-29 | 2011-10-26 | 株式会社东芝 | Information processing apparatus |
| CN101344810B (en) * | 2007-07-09 | 2010-07-21 | 华硕电脑股份有限公司 | Motherboard and its power supply module |
| CN101989115A (en) * | 2009-07-29 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Power system |
| CN102902336A (en) * | 2011-07-29 | 2013-01-30 | 联想(北京)有限公司 | Mainboard and power supply connecting module and electronic equipment thereof |
| CN102902336B (en) * | 2011-07-29 | 2015-08-26 | 联想(北京)有限公司 | The power supply link block of mainboard, mainboard and electronic equipment thereof |
| CN110223635A (en) * | 2019-06-14 | 2019-09-10 | 京东方科技集团股份有限公司 | Power-supplying circuit, method for controlling power supply and display device |
| CN110223635B (en) * | 2019-06-14 | 2021-10-01 | 京东方科技集团股份有限公司 | Power supply control circuit, power supply control method and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100458655C (en) | 2009-02-04 |
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Granted publication date: 20090204 Termination date: 20170928 |