CN109058149A - A kind of DC fan automatic pressure-transforming alignment circuit - Google Patents
A kind of DC fan automatic pressure-transforming alignment circuit Download PDFInfo
- Publication number
- CN109058149A CN109058149A CN201811128589.8A CN201811128589A CN109058149A CN 109058149 A CN109058149 A CN 109058149A CN 201811128589 A CN201811128589 A CN 201811128589A CN 109058149 A CN109058149 A CN 109058149A
- Authority
- CN
- China
- Prior art keywords
- fan
- transforming
- thermistor
- automatic pressure
- alignment circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000033228 biological regulation Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
Abstract
The invention discloses a kind of DC fan automatic pressure-transforming alignment circuit, including DC fan, DC fan has first end and the second end, wherein the second end is connected with ground wire, and first end is connected with voltage source VCC；Bleeder circuit is provided in connection line between first end and voltage source VCC；Bleeder circuit includes divider resistance R2 and thermistor R1.The present invention is a kind of practicability alignment circuit, it is serially connected in fan loop by the thermistor of negative temperature coefficient, used as with the adjustable divider resistance of its resistance value of temperature change, realize rotating speed of DC fan with the variation of temperature real-time change, reach to fan speed-regulating purpose.
Description
Technical field:
The present invention relates to speed regulation circuit for fan technical fields, and in particular to a kind of DC fan automatic pressure-transforming alignment circuit.
Background technique:
Fan is a kind of electric appliance for heat dissipation, and the faster heat dissipation effect of the revolving speed of fan is better theoretically, but in this way
It is also bigger to do the noise generated, if do not adjusted the speed, fan long-time high-speed cruising not only influences the service life of fan, and
And also bring unnecessary noise problem.
For above-mentioned speed regulation problem, design has some speed regulation circuit for fan in the prior art, but these alignment circuits are not only
Circuit complexity is difficult to realize speed regulation effect, and higher cost, unsuitable practical application.How to design one kind as a result, can reduce
Fan noise increases fan service life, and circuit is simple, low-cost speed regulation circuit for fan is skill that we need to solve
Art problem.
Summary of the invention:
The purpose of the present invention is to the deficiencies in the prior art, provide a kind of DC fan automatic pressure-transforming speed regulation electricity
Road.
Technology solution of the invention is as follows:
A kind of DC fan automatic pressure-transforming alignment circuit comprising DC fan, DC fan have first end and the
Two ends, wherein the second end is connected with ground wire, and first end is connected with voltage source VCC；
Bleeder circuit is provided in connection line between first end and voltage source VCC；
Bleeder circuit includes divider resistance R2 and thermistor R1；
Divider resistance R2 is adjustable resistance；
Thermistor R1 is negative tempperature coefficient thermistor.
Thermistor R1 is installed on a heat sink face, is used for detection device temperature, and resistance value subtracts as the temperature rises
It is small；By reasonably adjusting the size of divider resistance R2 resistance value, with the variation of temperature, DC fan first end and second end
Portion obtains different supply voltages, realizes the different revolving speed of fan.
The beneficial effects of the present invention are: this programme is a kind of practicability alignment circuit, passes through the temperature-sensitive of negative temperature coefficient
Resistance is serially connected in fan loop, is used as with the adjustable divider resistance of its resistance value of temperature change, is realized DC fan
Revolving speed real-time change with the variation of temperature, reaches to fan speed-regulating purpose.The application can reduce fan noise, increase wind
Service life is fanned, and circuit is simple, low in cost, practicability is high.
Detailed description of the invention:
Fig. 1 is circuit function block diagram of the invention.
Specific embodiment:
In order to keep the above objects, features and advantages of the present invention more obvious and easy to understand, with reference to the accompanying drawing to this hair
Bright specific embodiment is described in detail.
As shown in Figure 1, a kind of DC fan automatic pressure-transforming alignment circuit comprising DC fan, DC fan have the
One end A1 and the second end A2, wherein the second end A2 is connected with ground wire, and first end A1 is connected with voltage source VCC；
Bleeder circuit is provided in connection line between first end A1 and voltage source VCC；
Bleeder circuit includes divider resistance R2 and thermistor R1；
Divider resistance R2 is adjustable resistance；
Thermistor R1 is negative tempperature coefficient thermistor.
Thermistor R1 is installed on a heat sink face, is used for detection device temperature, and resistance value subtracts as the temperature rises
It is small；By reasonably adjusting the size of divider resistance R2 resistance value, with the variation of temperature, DC fan first end A1 and second
End A2 obtains different supply voltages, realizes the different revolving speed of fan.
Working principle: due to the thermistor that thermistor R1 is negative temperature coefficient, characteristic is its resistance value with temperature
Raising and reduce.Therefore gradually risen when with equipment cooling device temperature, the resistance value of thermistor R1 is gradually reduced, by partial pressure electricity
Road will be it is found that the supply voltage that DC fan first end A1 and the second end A2 are obtained will be gradually increased, therefore the revolving speed of fan
Also just gradually accelerate；When equipment cooling device temperature reduce when, the resistance value of thermistor R1 increases with it, by bleeder circuit it is found that
The supply voltage that DC fan first end A1 and the second end A2 is obtained will reduce, therefore the revolving speed of fan also just becomes therewith
It is slow.In short, when the temperature increases, by bleeder circuit, the supply voltage that DC fan obtains increases, and rotation speed of the fan is accelerated；When
When temperature reduces, by bleeder circuit, the supply voltage that DC fan obtains reduces, and rotation speed of the fan becomes slower.
In this way design, be serially connected in fan loop using the thermistor of negative temperature coefficient, as with temperature change its
The adjustable divider resistance of resistance value uses, realize rotating speed of DC fan with the variation of temperature real-time change.
The embodiment is to be illustrated the present invention, and is not intended to limit the present invention.Anyone skilled in the art
Without departing from the spirit and scope of the present invention, it modifies to the embodiment, therefore rights protection model of the invention
It encloses, should be as listed in the claims of the present invention.
Claims (4)
1. a kind of DC fan automatic pressure-transforming alignment circuit, it is characterised in that: including DC fan, DC fan has first end
Portion and the second end, wherein the second end is connected with ground wire, and first end is connected with voltage source VCC；
Bleeder circuit is provided in connection line between first end and voltage source VCC.
2. a kind of DC fan automatic pressure-transforming alignment circuit according to claim 1, it is characterised in that: bleeder circuit includes
Divider resistance R2 and thermistor R1.
3. a kind of DC fan automatic pressure-transforming alignment circuit according to claim 2, it is characterised in that: divider resistance R2 is
Adjustable resistance.
4. a kind of DC fan automatic pressure-transforming alignment circuit according to claim 2, it is characterised in that: thermistor R1 is
Negative tempperature coefficient thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128589.8A CN109058149A (en) | 2018-09-27 | 2018-09-27 | A kind of DC fan automatic pressure-transforming alignment circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128589.8A CN109058149A (en) | 2018-09-27 | 2018-09-27 | A kind of DC fan automatic pressure-transforming alignment circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109058149A true CN109058149A (en) | 2018-12-21 |
Family
ID=64766247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128589.8A Withdrawn CN109058149A (en) | 2018-09-27 | 2018-09-27 | A kind of DC fan automatic pressure-transforming alignment circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058149A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731190A (en) * | 1993-07-14 | 1995-01-31 | Nec Shizuoka Ltd | Drive circuit for fan motor |
| CN202057431U (en) * | 2011-05-18 | 2011-11-30 | 石家庄博发科技有限公司 | Wireless temperature measurement terminal used for high-tension switch contact |
| CN104005978A (en) * | 2014-06-16 | 2014-08-27 | 杨美英 | Novel electric fan capable of adjusting wind speed automatically |
| CN104802517A (en) * | 2015-04-30 | 2015-07-29 | 青岛尤尼科技有限公司 | Digital spray printing equipment and ink liquid level detection device and method thereof |
| CN107120301A (en) * | 2017-06-19 | 2017-09-01 | 黑龙江省丰美时电子科技有限公司 | A kind of temperature controller for being used to control electric fan wind speed |
| CN208950942U (en) * | 2018-09-27 | 2019-06-07 | 东莞市广荣电子制品有限公司 | A kind of DC fan automatic pressure-transforming alignment circuit |
-
2018
- 2018-09-27 CN CN201811128589.8A patent/CN109058149A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731190A (en) * | 1993-07-14 | 1995-01-31 | Nec Shizuoka Ltd | Drive circuit for fan motor |
| CN202057431U (en) * | 2011-05-18 | 2011-11-30 | 石家庄博发科技有限公司 | Wireless temperature measurement terminal used for high-tension switch contact |
| CN104005978A (en) * | 2014-06-16 | 2014-08-27 | 杨美英 | Novel electric fan capable of adjusting wind speed automatically |
| CN104802517A (en) * | 2015-04-30 | 2015-07-29 | 青岛尤尼科技有限公司 | Digital spray printing equipment and ink liquid level detection device and method thereof |
| CN107120301A (en) * | 2017-06-19 | 2017-09-01 | 黑龙江省丰美时电子科技有限公司 | A kind of temperature controller for being used to control electric fan wind speed |
| CN208950942U (en) * | 2018-09-27 | 2019-06-07 | 东莞市广荣电子制品有限公司 | A kind of DC fan automatic pressure-transforming alignment circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181221 |