CN201303441Y - Hard disk indicating lamp circuit - Google Patents
Hard disk indicating lamp circuit Download PDFInfo
- Publication number
- CN201303441Y CN201303441Y CNU2008202131905U CN200820213190U CN201303441Y CN 201303441 Y CN201303441 Y CN 201303441Y CN U2008202131905 U CNU2008202131905 U CN U2008202131905U CN 200820213190 U CN200820213190 U CN 200820213190U CN 201303441 Y CN201303441 Y CN 201303441Y
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- China
- Prior art keywords
- hard disk
- resistance
- light
- emitting diode
- power supply
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Abstract
The utility model discloses a hard disk indicating lamp circuit, which comprises a hard disk working state indicating circuit consisting of a first light-emitting diode, a first resistance, a control chip and a hard disk, wherein a positive electrode of the first light-emitting diode is connected to a power source, a negative electrode of the first light-emitting diode is connected to one end of the first resistance, and the other end of the first resistance is connected with the hard disk by connecting to the control chip. The utility model is characterized by further comprising a hard disk power state indicating circuit which consists of a second resistance, wherein one end of the second resistance is connected to the negative electrode of the first light-emitting diode, and the other end is connected to the ground. The utility model is capable of indicating power connection state and read-write working state of the hard disk, which is convenient for use.
Description
Technical field
The utility model relates to a kind of indicator light circuit, specifically relates to a kind of hard disk indicator light circuit.
Background technology
For portable hard drive, when being connected on the computer, needing in time to understand hard disk and whether correctly be connected with computer reliably by USB interface or other interfaces.Existing portable hard drive indicator light is only just luminous when the disk read-write data, when especially equipment inserts during use, can not be directly indicator light by the hard disk peripheral hardware be directly acquainted with hard disk and whether be connected with computer, bring certain inconvenience to use.
Summary of the invention
The purpose of this utility model is to solve above technical problem, proposes a kind of hard disk indicator light circuit, both can indicate the read-write state of hard disk, also can indicate the power supply status of hard disk.
The purpose of this utility model is solved by the following technical programs.
This hard disk indicator light circuit, comprise hard disk operating state indicating circuit, described hard disk operating state indicating circuit comprises first light-emitting diode, first resistance, control chip and hard disk, the positive pole of described first light-emitting diode is connected with power supply, negative pole is connected with an end of first resistance, the other end of described first resistance is characterized in by being connected with control chip and being connected with hard disk, also comprises hard disk power supply status indicating circuit.
In the above-mentioned hard disk indicator light circuit, described hard disk power supply status indicating circuit comprises second resistance, and an end of described second resistance is connected other end ground connection with the negative pole of first light-emitting diode.
In the above-mentioned hard disk indicator light circuit, described hard disk power supply status indicating circuit comprises second light-emitting diode and second resistance, the positive pole of described second light-emitting diode is connected with power supply, and negative pole is connected with an end of second resistance, the other end ground connection of described second resistance.
In the above-mentioned hard disk indicator light circuit, described hard disk is a portable hard drive.
In the above-mentioned hard disk indicator light circuit, also comprise the voltage transitions chip, the positive pole of described first light-emitting diode is by being connected and being connected with power supply with the voltage transitions chip.
The utility model is compared with the prior art the beneficial effect that is had: be provided with the power supply status indicating circuit, can indicate the power supply connection status of hard disk, make things convenient for the user to observe.Shared one first light-emitting diode of power supply status indicating circuit and hard disk operating state indicating circuit, behind the power connection, first light-emitting diode sends the low light level, and during disk read-write, the current-limiting resistance resistance reduces, and first light-emitting diode sends high light.
Description of drawings
Fig. 1 is the circuit diagram of embodiment.
Embodiment
A kind of portable hard drive indicator light circuit as shown in Figure 1 comprises hard disk Y1, voltage transitions chip IC 1, control chip IC2, light-emitting diode D1, first resistance R 1, second resistance R 2.The input of voltage transitions chip IC 1 is connected with power supply, and the output of voltage transitions chip IC 1 is connected with the input of control chip IC2 and the positive pole of light-emitting diode D1.First resistance R 1 and second resistance R 2 are the current-limiting resistance of light-emitting diode D1, wherein an end of second resistance R 2 is connected with the negative pole of light-emitting diode D1, other end ground connection, an end of first resistance R 1 is connected with the negative pole of light-emitting diode D1, and the other end is connected with the input of control chip IC2.The control output end of control chip IC2 is connected with portable hard drive Y1, operating circuit one termination power of portable hard drive Y1, other end ground connection.
When portable hard drive Y1 is inserted computer, behind the foregoing circuit power connection, electric current is by voltage transitions chip IC 1, light-emitting diode D1, the second current-limiting resistance R2, and light-emitting diode D1 is luminous.By adjusting the resistance of the second current-limiting resistance R2, control light-emitting diode D1 sends the low light level.When control chip IC2 control portable hard drive Y1 read-write, the input terminal voltage of control chip IC2 reduces, the light-emitting diode D1 and the first current-limiting resistance R1 two ends in series connection form voltage difference, the part electric current is by the first current-limiting resistance R1, hard disk Y1, make that the brightness of light-emitting diode D1 is strengthened by the electric current increase of light-emitting diode D1.When control chip IC2 control portable hard drive Y1 did not did not read and write, the input terminal voltage of control chip IC2 etc. was gone into the output end voltage of voltage transitions chip EC1, and the first current-limiting resistance R1 goes up no current and passes through, and the brightness of light-emitting diode D1 dies down.Can indicate the power supply status of portable hard drive and the operating state of read-write simultaneously by a light-emitting diode like this.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace; for example use two light-emitting diodes; the power supply status of an indication hard disk; read-write state during the work of another indication hard disk all should be considered as belonging to protection range of the present utility model.
Claims (5)
1. hard disk indicator light circuit, comprise hard disk operating state indicating circuit, described hard disk operating state indicating circuit comprises first light-emitting diode, first resistance, control chip and hard disk, the positive pole of described first light-emitting diode is connected with power supply, negative pole is connected with an end of first resistance, the other end of described first resistance is characterized in that by being connected with control chip and being connected with hard disk: also comprise hard disk power supply status indicating circuit.
2. hard disk indicator light circuit as claimed in claim 1 is characterized in that: described hard disk power supply status indicating circuit comprises second resistance, and an end of described second resistance is connected other end ground connection with the negative pole of first light-emitting diode.
3. hard disk indicator light circuit as claimed in claim 1, it is characterized in that: described hard disk power supply status indicating circuit comprises second light-emitting diode and second resistance, the positive pole of described second light-emitting diode is connected with power supply, negative pole is connected with an end of second resistance, the other end ground connection of described second resistance.
4. as claim 2 or 3 described hard disk indicator light circuits, it is characterized in that: described hard disk is a portable hard drive.
5. hard disk indicator light circuit as claimed in claim 4 is characterized in that: also comprise the voltage transitions chip, the positive pole of described first light-emitting diode is by being connected and being connected with power supply with the voltage transitions chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202131905U CN201303441Y (en) | 2008-11-07 | 2008-11-07 | Hard disk indicating lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202131905U CN201303441Y (en) | 2008-11-07 | 2008-11-07 | Hard disk indicating lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201303441Y true CN201303441Y (en) | 2009-09-02 |
Family
ID=41087070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202131905U Expired - Fee Related CN201303441Y (en) | 2008-11-07 | 2008-11-07 | Hard disk indicating lamp circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201303441Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541701A (en) * | 2010-12-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Hard disk test device |
| CN102541701B (en) * | 2010-12-23 | 2016-11-30 | 重庆科燃科技有限公司 | Hard disk test device |
| CN106681890A (en) * | 2017-01-10 | 2017-05-17 | 郑州云海信息技术有限公司 | Hard disk status indicating device |
-
2008
- 2008-11-07 CN CNU2008202131905U patent/CN201303441Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102541701A (en) * | 2010-12-23 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Hard disk test device |
| CN102541701B (en) * | 2010-12-23 | 2016-11-30 | 重庆科燃科技有限公司 | Hard disk test device |
| CN106681890A (en) * | 2017-01-10 | 2017-05-17 | 郑州云海信息技术有限公司 | Hard disk status indicating device |
| CN106681890B (en) * | 2017-01-10 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of disk state instruction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20121107 |