CN202673734U - Control circuit for wide-range cooling fan - Google Patents
Control circuit for wide-range cooling fan Download PDFInfo
- Publication number
- CN202673734U CN202673734U CN 201220298568 CN201220298568U CN202673734U CN 202673734 U CN202673734 U CN 202673734U CN 201220298568 CN201220298568 CN 201220298568 CN 201220298568 U CN201220298568 U CN 201220298568U CN 202673734 U CN202673734 U CN 202673734U
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- CN
- China
- Prior art keywords
- control circuit
- cooling fan
- triode
- terminal regulator
- radiation fan
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a control circuit for a wide-range cooling fan. The control circuit comprises a three-terminal regulator and a temperature detection and control circuit. The three-terminal regulator is connected with a direct current power supply circuit and the cooling fan respectively. The temperature detection and control circuit is connected with the three-terminal regulator through a triode. The collector and emitter of the triode are connected in parallel with a resistor, and the emitter of the triode is grounded. The triode is an NPN type triode. According to the control circuit for the wide-range cooling fan, the three-terminal regulator and the temperature detection and control circuit are used for controlling the high rotating speed and low rotating speed of the cooling fan, so that the application range of the cooling fan and the range of choice of a user are widened, simultaneously the aim of saving electric energy is fulfilled, the service life of the cooling fan is prolonged, and the maintenance cost of electronic equipment is lowered.
Description
Technical field
The utility model belongs to communication and associated electronic device technical field, relates to a kind of control circuit of cooling fan, is specifically related to a kind of wide range control circuit of cooling fan.
Background technique
At present, the application of communication and associated electronic device is more and more, particularly the equipment oneself power consumption large, when self-radiating can not have been satisfied the demand, adopt radiation fan to become a kind of good solution.According to the power consumption of electronic equipment, the concrete condition of heat, select the suitable radiation fan of power, define to a great extent the using scope of radiation fan, also define user's range of choice.In addition, in communication and associated electronic device, because the change of power consumption scope of equipment operation is very large, the equipment self heat also can significantly change with the different heats of the state of work mostly, the equipment heat can be very high in high load, at this moment adopts radiation fan to dispel the heat; Yet, adopt the constant radiation fan of rotating speed to process the problems referred to above, not only can bring unnecessary waste of energy, also can shorten the working life of radiation fan, increase the electronic equipment maintenance cost.
The model utility content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, a kind of wide range control circuit of cooling fan is provided, regulate the rotating speed of radiation fan according to electronic equipment self temperature, widen using scope and the user selection scope of radiation fan, reach simultaneously the purpose of saving power, prolong the working life of radiation fan, reduce the electronic equipment maintenance cost.
For achieving the above object, the technological scheme that the utility model is taked is: a kind of wide range control circuit of cooling fan is provided, it is characterized in that: comprise three terminal regulator and temperature measurement and control circuit; Described three terminal regulator is connected with radiation fan with DC power-supply circuit respectively; Described temperature measurement and control circuit is connected with three terminal regulator through triode; The collector and emitter two ends of described triode are in parallel with a resistance; The grounded-emitter connection of described triode.
Described triode is NPN type triode.
The three terminal regulator of the wide range control circuit of cooling fan setting that the utility model provides and temperature measurement and control circuit are realized the control to the high and low rotating speed of radiation fan, widen using scope and the user selection scope of radiation fan, reach simultaneously the purpose of saving power, prolong the working life of radiation fan, reduced the electronic equipment maintenance cost.
Description of drawings
Fig. 1 is the theory diagram of wide range control circuit of cooling fan.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
As shown in Figure 1, this wide range control circuit of cooling fan comprises three terminal regulator and temperature measurement and control circuit; Three terminal regulator is connected with radiation fan with DC power-supply circuit respectively; The temperature measurement and control circuit is connected with three terminal regulator through triode; The collector and emitter two ends of triode are in parallel with a resistance; The grounded-emitter connection of triode.Above-mentioned triode is NPN type triode.The temperature measurement and control circuit is for detection of electronic equipment temperature and the output of control circuit signal; At first be to temperature measurement and control circuit setting temperature threshold value, determine at the following circuit output of temperature threshold values high level (H), in the above circuit output low level of temperature threshold values (L); High level represent electronic equipment low in energy consumption, heat is little, radiation fan needs low-speed running; The power consumption that low level represents electronic equipment is high, heat is large, and radiation fan need to be told running.
The working principle of this wide range control circuit of cooling fan is: the temperature measurement and control electric circuit inspection of electronic equipment is to temperature variation, by the setting to temperature threshold, by temperature measurement and control circuit output high level or low level.According to the nominal power supply voltage value V of radiation fan, determine the output voltage values of selected three terminal regulator; As when the temperature measurement and control circuit is exported high level, needing the rotating speed of radiation fan is low speed, and when selecting low speed to be a half speed of radiation fan, the output voltage of three terminal regulator selects 1/2V, the like.The numerical value of resistance can be done suitable adjustment according to the rotating speed needs of radiation fan.
The wide range radiation fan that provides according to the utility model can just be controlled according to the power consumption of electronic equipment the rotating speed of radiation fan, has widened the using scope of radiation fan and user's range of choice; Make radiation fan under rated speed, can satisfy normal operation in the large heat situation of the high power consumption of electronic equipment; In the situation that low power consumption state low in calories, it is 1/2nd or 1/3rd of rated speed that radiation fan reduces rotating speed automatically, can reach saving power like this, reduces the effect of radiation fan noise, prolong the working life of radiation fan, reduce the maintenance cost of electronic equipment.In addition, this wide range control circuit of cooling fan also has very large versatility.
But the above only is preferred implementation of the present utility model; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; be easy to the utility model is carried out some improvement and modification, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (2)
1. a wide range control circuit of cooling fan is characterized in that: comprise three terminal regulator and temperature measurement and control circuit; Described three terminal regulator is connected with radiation fan with DC power-supply circuit respectively; Described temperature measurement and control circuit is connected with three terminal regulator through triode; The collector and emitter two ends of described triode are in parallel with a resistance; The grounded-emitter connection of described triode.
2. wide range control circuit of cooling fan according to claim 1, it is characterized in that: described triode is NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298568 CN202673734U (en) | 2012-06-25 | 2012-06-25 | Control circuit for wide-range cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298568 CN202673734U (en) | 2012-06-25 | 2012-06-25 | Control circuit for wide-range cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673734U true CN202673734U (en) | 2013-01-16 |
Family
ID=47494641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220298568 Expired - Fee Related CN202673734U (en) | 2012-06-25 | 2012-06-25 | Control circuit for wide-range cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351237A (en) * | 2015-12-09 | 2016-02-24 | 深圳市虹远通信有限责任公司 | Two-wire direct current fan speed regulation device and regulation method |
| WO2017133298A1 (en) * | 2016-02-02 | 2017-08-10 | 南通贝思特机械工程有限公司 | Control circuit for cooling fan for use in cabinet |
-
2012
- 2012-06-25 CN CN 201220298568 patent/CN202673734U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351237A (en) * | 2015-12-09 | 2016-02-24 | 深圳市虹远通信有限责任公司 | Two-wire direct current fan speed regulation device and regulation method |
| WO2017133298A1 (en) * | 2016-02-02 | 2017-08-10 | 南通贝思特机械工程有限公司 | Control circuit for cooling fan for use in cabinet |
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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: 20130116 Termination date: 20210625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |