CN201750346U - Power supply with self test and display function - Google Patents
Power supply with self test and display function Download PDFInfo
- Publication number
- CN201750346U CN201750346U CN2010202154904U CN201020215490U CN201750346U CN 201750346 U CN201750346 U CN 201750346U CN 2010202154904 U CN2010202154904 U CN 2010202154904U CN 201020215490 U CN201020215490 U CN 201020215490U CN 201750346 U CN201750346 U CN 201750346U
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- power supply
- output
- supply unit
- display units
- selftest
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Abstract
The utility model provides a power supply with a self test and display function. The power supply is provided with a plurality of direct current output ends and a PS_ON ends and also comprises a plurality of test modules respectively connected with the plurality of direct current output ends in series, wherein each test module comprises a first Zener diode, an NPN transistor, a second Zener diode and a current limiting resistor. In addition, a plurality of display units and a test switch are arranged, wherein the display units are electrically forward connected with one end of the current limiting resistor, and the other end is grounded; and one end of the test switch is electrically connected to the PS_ON end and the other end is grounded to trigger the plurality of direct current output ends to output voltage. Therefore, the function of the Zener diode, the NPN transistor and the resistor as a switch is used for enabling the display unit to show actuation when the output voltage is within normal range so as to easily and initially judge the output end where the output voltage is abnormal.
Description
Technical field
The utility model is relevant with the power supply unit field, particularly about the power supply unit of a kind of tool selftest and Presentation Function.
Background technology
Power supply unit is quite frequent in the application of industry now, especially for computer industry and peripheral equipment thereof, and the necessary device under the driven by power demand especially.The for example electric power mouth of the driving of desktop computer motherboard, external display, USB or other types output all needs to be provided with utilizing for various required direct voltages by power supply unit conversion external communication electricity.Therefore, whether the direct current output of power supply unit after conversion is stable, whether can normally stablize one of important document of running with directly influencing host computer and its periphery.
Yet, with regard to existing market, the label of power supply unit and of a great variety, very different.If the long-time phenomenon of using the electronic component that load end is often arranged down to damage and maybe can't drive produces.Main cause is that the voltage of power supply unit output and load do not match and then the situation of burning is arranged; Or exported low voltage and can't provide enough voltage to be provided with using.Again, export when undesired when supply voltage, most users only can be replaced renewal with whole power supply unit.These ways except that the waste that causes resource, also belong to extra consumption for the user.
Therefore, if can more be provided with a device with selftest and Presentation Function on power supply unit, the user can fix a breakdown or abnormal output easily by this device, and then be able to effective and specific aim is got rid of its problem.
In view of this, this creator feels it and does not attain and improve and exhaust its intelligence hammer away, and be engaged in described industry accumulating experience for many years with it, and then develop the power supply unit of a kind of tool selftest and Presentation Function, utilize the characteristic of Zener diode and NPN transistor, form a switch in conjunction with a resistance, make voltage detecting drive in output area that for example LED is luminous.And then can be able to the preliminary easily abnormal voltage end of output of judging for testing staff or general user.
Summary of the invention
In view of the above problems, the purpose of this utility model is to provide the power supply unit of a kind of tool selftest and Presentation Function, make voltage detecting in output area, drive display unit, and then can be able to the preliminary easily abnormal voltage end of output of judging for testing staff or general user.
For reaching above-mentioned purpose, the utility model is the power supply unit that proposes a kind of tool selftest and Presentation Function, has a plurality of dc output ends and PS_ON end, power supply unit comprises: a plurality of test modules, be serially connected with described a plurality of dc output end respectively, each described test module wherein, comprise: one first Zener diode is reverse connection with respect to described dc output end; One NPN transistor has a base terminal and emitter-base bandgap grading end, and wherein said base terminal connects described first Zener diode, described emitter-base bandgap grading end ground connection; One second Zener diode is reverse connection with respect to described dc output end, and becomes to be arranged in parallel with described first Zener diode; And a current-limiting resistance, the setting of connecting with described second Zener diode; A plurality of display units forward are electrically connected at described current-limiting resistance one end, other end ground connection; And a Test Switchboard, an end is electrically connected on described PS_ON end, and other end ground connection is in order to trigger described a plurality of dc output end output voltage.
During the corresponding described dc output end output+5V of one of wherein said a plurality of test modules, deboost drives the work of one of described a plurality of display units in 4.75V～5.25V scope.During corresponding described dc output end output+3.3V, deboost drives one of described a plurality of display units and works in 3.135V～3.465V scope.During corresponding described dc output end output+12V, deboost drives one of described a plurality of display units and works in 11.4V～12.6V scope.During corresponding described dc output end output-12V, deboost in-13.2V～-drive one of described a plurality of display units in the 10.8V scope to work.
And forward be electrically connected at described a plurality of display units of described current-limiting resistance, can be light-emitting diode, LCD or vacuum fluorescent display one of them.
Effect of the present utility model is to provide the power supply unit of a kind of tool selftest and Presentation Function, utilizes the characteristic of Zener diode and NPN transistor, forms a switch in conjunction with a resistance, makes voltage detecting drive in output area that for example LED is luminous.And then can be able to the abnormal voltage end of preliminary easily judgement output for testing staff or general user, and make the utility model with high pressure and the measuring ability of crossing low pressure.Control for cost simultaneously also is effectively controlled.
Description of drawings
Fig. 1 is the power supply unit block schematic diagram of the utility model tool selftest and Presentation Function;
Fig. 2 is the test module circuit diagram of the power supply unit+3.3V output of the utility model tool selftest and Presentation Function;
Fig. 3 is the test module circuit diagram of the power supply unit+5V output of the utility model tool selftest and Presentation Function;
Fig. 4 is the power supply unit+5V of the utility model tool selftest and Presentation Function
SBThe test module circuit diagram of output;
Fig. 5 is the test module circuit diagram of the power supply unit+12V output of the utility model tool selftest and Presentation Function;
Fig. 6 is the test module circuit diagram of the power supply unit-12V output of the utility model tool selftest and Presentation Function;
Fig. 7 is the test module circuit diagram of the power supply unit PG signal output part of the utility model tool selftest and Presentation Function;
Fig. 8 is the power supply unit structural representation of the utility model tool selftest and Presentation Function.
Description of reference numerals: 1-power supply unit; The 12-dc output end; The 14-PS_ON end; The 16-test module; 162-first Zener diode; The 164-NPN transistor; 166-first Zener diode; The 168-current-limiting resistance; The 18-display unit; The 19-Test Switchboard.
Embodiment
Understand content of the present utility model for your juror can be known, it is graphic sincerely to arrange in pairs or groups in the following instructions, please consult.
See also Fig. 1, be the power supply unit block schematic diagram of the utility model tool selftest and Presentation Function.By figure sights, power supply unit 1 provided by the utility model is to have a plurality of dc output ends 12 and a PS_ON holds 14, also comprises: a plurality of test modules 16, a plurality of display unit 18 and a Test Switchboard 19.If with existing ATX power supply unit is example, when inserting the AC110V socket, the partial circuit of ATX power supply is started working and is imported+the 5V V Standby, and what generally claim is+5V
SBVoltage.And exporting simultaneously the voltage of about 2.8～5V at another output, we claim is PW-ON (PS-ON) start control voltage.And after pressing lower casing external power button or short circuit PW-ON (PS-ON/PW-SW) triggering row pin, the main frame circuits for triggering get started work.At first ATX power supply (+5V PW-ON) voltage is pulled low to 0V, then the ATX power supply is just started working, and respectively output+3.3V ,+5V ,+12V ,-12V, use for main frame.Through 50ms～500ms, in a single day ATX power supply internal electric source control IC detect+3.3V ,+5V ,+12V and-when 12V can steadily export, just at an ATX power supply output about 5V voltage (PG signal Power Good), the PG signal is to reset the source signal of (RST) signal on the main frame.
Yet whether these operations also can't be detected each output voltage normal, so the utility model is further described a plurality of dc output ends 12 to be detected by described a plurality of test modules 16.Utilize and open described Test Switchboard 19, for example be provided with, trigger each dc output end 12 work with the button touch control manner.And each described dc output end 12 is exported the described a plurality of test modules 16 of correspondent voltage in correspondence respectively, when detecting the normal person of the function that finishes, promptly in corresponding described a plurality of display unit 18 output display result.Described display unit 18 can be light-emitting diode, LCD or vacuum fluorescent display mode and realizes.When being described display unit 18 with light-emitting diode for example, if output voltage is normal, then described light-emitting diode is shinny state.Thus, user or testing staff can detect by this mode each dc output end 12 to power supply unit 1 easily.
Please consult Fig. 2～7 more in the lump, be respectively the utility model tool selftest and Presentation Function power supply unit+3.3V ,+5V ,+5V
SB,+12V ,-the test module circuit diagram of 12V and PG signal output part.
By the figure sight, described a plurality of test modules 16 of the present utility model are serially connected with described a plurality of dc output end 12 respectively, and wherein each described test module 16 comprises: one first Zener diode 162, a NPN transistor 164, one second Zener diode 166 and a current-limiting resistance 168.Wherein said first Zener diode 162 is to be reverse connection with respect to described dc output end 12.The described base terminal of described NPN transistor 164 is connected in described first Zener diode 162, described emitter-base bandgap grading end ground connection.166 described relatively dc output ends 12 of described second Zener diode are reverse connection, and are arranged in parallel for 162 one-tenth with described first Zener diode.The setting of connecting with described second Zener diode 166 of 168 of described current-limiting resistances.As for described a plurality of display units 18, for example light-emitting diode then forward is electrically connected at described current-limiting resistance 168 1 ends, and the other end is ground connection then.With+5V dc output end 12 is an example, if deboost in 4.75～5.25V scope the time, begins to such an extent that drive described a plurality of display units 18 work.Then when output is lower than 4.75V, can not surpass described second Zener diode, 166 breakdown voltages because of described reverse bias, therefore, electric current can not flow through described second Zener diode 166, and described display unit 18 can not worked.If, can surpass the collapse that described first Zener diode, 162 breakdown voltages make because of described reverse bias when output voltage during greater than 5.25V, described NPN transistor 164 conductings at this moment and make the flow through emitter-base bandgap grading end ground connection water conservancy diversion of NPN transistor 164 of electric current.
This principle of base ,+3.3V ,+5V
SBDescribed a plurality of test modules 16 of ,+12V and PG signal output part correspondence all specify identically with above-mentioned, only are set at 3.135～3.465V, 4.75V～5.25V, 11.4V～12.6V and 4.75V～5.25V respectively in the deboost scope; And-be reverse the connection with described second Zener diode 166 with respect to described-12V only during 12V in described first Zener diode 162, the deboost scope is set at-13.2V～-10.8V, be provided with as for other circuit all identical with previous embodiment, so repeat no more in this.As for each above-mentioned dc output end 12 voltage kind is to be configuration corresponding to all kinds of power supply unit 1 demands, but its test module principle and framework are then all in above-mentioned identical.
Please consult Fig. 8 more in the lump, be the power supply unit structural representation of the utility model tool selftest and Presentation Function.Shown in figure, the utility model is concrete can be represented described the detection on the box body that the back result be output in power supply unit 1 after implementing, and also is about to outside described a plurality of display unit 18 display result directly find expression in.And desire to detect execution, then only need after the described Test Switchboard 19 in outside presses it, can detect.
Effect of the present utility model is to provide the power supply unit of a kind of tool selftest and Presentation Function, utilizes the characteristic of Zener diode and NPN transistor, forms a switch in conjunction with a resistance, makes voltage detecting drive in output area that for example LED is luminous.And then can be able to the abnormal voltage end of preliminary easily judgement output for testing staff or general user, and make the utility model with high pressure and the measuring ability of crossing low pressure.Control for cost simultaneously also is effectively controlled.
More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection range of the present utility model.
Claims (9)
1. the power supply unit of tool selftest and Presentation Function is characterized in that having
A plurality of dc output ends and PS_ON end; Described power supply unit comprises: a plurality of test modules, a plurality of display unit and a Test Switchboard, wherein
Described a plurality of test module is serially connected with described a plurality of dc output end respectively, and each described test module comprises:
One first Zener diode is reverse connection with respect to described dc output end;
One NPN transistor has a base terminal and emitter-base bandgap grading end, and wherein said base terminal connects described first Zener diode, described emitter-base bandgap grading end ground connection;
One second Zener diode is reverse connection with respect to described dc output end, and becomes to be arranged in parallel with described first Zener diode; And
One current-limiting resistance, the setting of connecting with described second Zener diode;
Described a plurality of display unit forward is electrically connected at described current-limiting resistance one end, other end ground connection; And
Described Test Switchboard, an end are electrically connected on described PS_ON end, and other end ground connection is in order to trigger described a plurality of dc output end output voltage.
2. the power supply unit of tool selftest according to claim 1 and Presentation Function, it is characterized in that, during the corresponding described dc output end output+5V of one of described a plurality of test modules, deboost drives the work of one of described a plurality of display units in 4.75V～5.25V scope.
3. the power supply unit of tool selftest according to claim 1 and Presentation Function, it is characterized in that, during the corresponding described dc output end output+3.3V of one of described a plurality of test modules, deboost drives the work of one of described a plurality of display units in 3.135V～3.465V scope.
4. the power supply unit of tool selftest according to claim 1 and Presentation Function, it is characterized in that, during the corresponding described dc output end output+12V of one of described a plurality of test modules, deboost drives the work of one of described a plurality of display units in 11.4V～12.6V scope.
5. the power supply unit of tool selftest according to claim 1 and Presentation Function, it is characterized in that, during the corresponding described dc output end output-12V of one of described a plurality of test modules, deboost in-13.2V～-drive the work of one of described a plurality of display units in the 10.8V scope.
6. the power supply unit of tool selftest according to claim 1 and Presentation Function, it is characterized in that, during the corresponding described dc output end output+5V of one of described a plurality of test modules, deboost drives the work of one of described a plurality of display units in 4.75V～5.25V scope; During described dc output end output+3.3V, deboost drives the work of one of described a plurality of display units in 3.135V～3.465V scope; During described dc output end output+12V, deboost drives the work of one of described a plurality of display units in 11.4V～12.6V scope; During described dc output end output-12V, deboost in-13.2V～-drive the work of one of described a plurality of display units in the 10.8V scope.
7. according to the power supply unit of each described tool selftest of claim 1 to 6 and Presentation Function, it is characterized in that described a plurality of display units are light-emitting diode.
8. according to the power supply unit of each described tool selftest of claim 1 to 6 and Presentation Function, it is characterized in that described a plurality of display units are LCD.
9. according to the power supply unit of each described tool selftest of claim 1 to 6 and Presentation Function, it is characterized in that described a plurality of display units are vacuum fluorescent display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202154904U CN201750346U (en) | 2010-06-01 | 2010-06-01 | Power supply with self test and display function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202154904U CN201750346U (en) | 2010-06-01 | 2010-06-01 | Power supply with self test and display function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201750346U true CN201750346U (en) | 2011-02-16 |
Family
ID=43585019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202154904U Expired - Fee Related CN201750346U (en) | 2010-06-01 | 2010-06-01 | Power supply with self test and display function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201750346U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095149A (en) * | 2011-11-01 | 2013-05-08 | 台达电子工业股份有限公司 | Power supply |
| CN109375760A (en) * | 2018-12-14 | 2019-02-22 | 佛山市伙伴联扬电子有限公司 | A kind of computer power detection device |
-
2010
- 2010-06-01 CN CN2010202154904U patent/CN201750346U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095149A (en) * | 2011-11-01 | 2013-05-08 | 台达电子工业股份有限公司 | Power supply |
| CN103095149B (en) * | 2011-11-01 | 2015-10-07 | 台达电子工业股份有限公司 | Power supply unit |
| CN109375760A (en) * | 2018-12-14 | 2019-02-22 | 佛山市伙伴联扬电子有限公司 | A kind of computer power detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20160601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |