CN203278726U - Driving circuit of AC-DC heat dissipation fan - Google Patents
Driving circuit of AC-DC heat dissipation fan Download PDFInfo
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- CN203278726U CN203278726U CN 201320014294 CN201320014294U CN203278726U CN 203278726 U CN203278726 U CN 203278726U CN 201320014294 CN201320014294 CN 201320014294 CN 201320014294 U CN201320014294 U CN 201320014294U CN 203278726 U CN203278726 U CN 203278726U
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- 230000017525 heat dissipation Effects 0.000 title abstract 9
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a driving circuit of an AC-DC heat dissipation fan. The driving circuit of the AC-DC heat dissipation fan comprises a voltage reduction unit which is electrically connected with an input terminal of an alternating-current power supply and used for reducing a voltage of an alternating current; a rectification unit which is electrically connected with the voltage reduction unit and used for rectifying the voltage-reduced alternating current; a filtering unit which is electrically connected with the rectification unit and is used for filtering and converting the rectified alternating current into a direct current power supply; and a driving circuit which is electrically connected with a stator coil of a direct current fan and is used for driving the direct current fan. The beneficial effects are as follows: the voltage reduction unit, the rectification unit and the filtering unit are added to the driving circuit of the AC-DC heat dissipation fan, so that a stable alternating current can be output after rectifying and filtering via the rectification unit and the filtering unit, no matter a direct-current power supply or an alternating-current power supply is accessed; the rotate speed and the air volume of the heat dissipation fan are raised effectively, so as to raise the heat dissipation effect of the heat dissipation fan; and in addition, a direct-current power supply and an alternating-current power supply can be accessed, the applicability of the heat dissipation fan is enlarged, and the heat dissipation fan can be applied to more places.
Description
[technical field]
The utility model relates to the radiator fan drive circuit, relates in particular to a kind of alternating current-direct current radiator fan drive circuit.
[background technology]
Radiator fan is a kind of common radiator structure, radiator fan commonly used can be divided into DC radiation fan and exchange two kinds of radiator fans by power type, the interchange radiator fan is all generally the interchange occasions such as industrial machines, and DC radiation fan generally is used for computer, radiator and other equipment, and existing these two kinds of radiator fans can't be used alternatingly mutually, can only use corresponding power supply, poor for applicability, in addition, the rotating speed of existing interchange radiator fan is low, air quantity is little, and radiating effect is poor.
[utility model content]
The purpose of this utility model is effectively to overcome the deficiency of above-mentioned technology, and a kind of alternating current-direct current radiator fan drive circuit is provided, and has improved the applicability of radiator fan and air output and the radiating effect of radiator fan.
The technical solution of the utility model is achieved in that a kind of alternating current-direct current radiator fan drive circuit, and it comprises
Pressure unit with the input electric connection of AC power, carries out step-down to the alternating current of inputting;
Rectification unit is electrically connected with described pressure unit, and the alternating current after step-down is carried out rectification, and this rectification unit is bridge rectifier;
Filter unit is electrically connected with described rectification unit, the alternating current after rectification is carried out filtering convert DC power supply to, for drive circuit provides direct voltage;
And drive circuit, be electrically connected with described DC fan stator coil, drive DC fan.
The below further sets forth technique scheme:
Further, described pressure unit comprises the 3rd electric capacity and the first resistance that is connected in parallel.
Further, described filter unit has a filter capacitor at least.
Further, described drive circuit comprises the first triode, the second triode and Hall element, wherein, the collector electrode of described the first triode and wherein stator coil one an end electric connection, one end of the collector electrode of the second triode and another stator coil is electrically connected, and the other end of two stator coils is connected to the positive terminal of DC power supply jointly;
The 3rd pin of the base stage of described the first triode and Hall element is electrically connected, and its node is connected in the positive terminal of DC power supply by the 4th resistance; The second pin of the base stage of described the second triode and Hall element is electrically connected, and its node is connected in the positive terminal of DC power supply by the 3rd resistance;
The emitter of described the first triode, the second triode and the 4th pin of Hall element are connected to the negative pole end of DC power supply jointly, and the first pin of Hall element is connected to the positive terminal of DC power supply by the second resistance.
the beneficial effects of the utility model are: the utility model increases pressure unit, rectification unit and filter unit, when the incoming transport electricity, AC power is converted to the galvanic current source provides direct voltage for drive circuit, equally, when the access DC power supply, the direct current of stable output, therefore, no matter access DC power supply or AC power, after rectification unit and filter unit rectifying and wave-filtering, equal exportable galvanic currents, rotating speed and the air output of radiator fan have effectively been improved, and then improved the radiating effect of radiator fan, in addition, the accessible DC power supply of the utility model and AC power, make the applicability of radiator fan more extensive, can be applicable to more place.
[description of drawings]
Fig. 1 is circuit theory diagrams of the present utility model.
[embodiment]
The utility model will be further described below in conjunction with drawings and Examples.
with reference to shown in Figure 1, a kind of alternating current-direct current radiator fan of the utility model drive circuit, it comprises pressure unit 10, rectification unit 20, filter unit 30 and drive circuit 40, wherein, pressure unit 10 is electrically connected with the input of AC power, alternating current to input carries out step-down, rectification unit 20 is electrically connected with described pressure unit 10, alternating current after step-down is carried out rectification, filter unit 30 is electrically connected with described rectification unit 20, alternating current after rectification is carried out filtering convert DC power supply to, for drive circuit 40 provides direct voltage, and drive circuit 40 is electrically connected with described DC fan stator coil, drive DC fan.
The emitter of described the first triode Q1, the second triode Q2 and the 4th pin 4 of Hall element IC2 are connected to the negative pole end of DC power supply jointly, and the first pin 1 of Hall element IC2 is connected to the positive terminal of DC power supply by the second resistance R 2.
Pressure unit in the utility model embodiment comprises the 3rd capacitor C 3 and the first resistance R 1 that is connected in parallel, rectification unit is the bridge rectifier IC1 that four diodes form, and filter unit is another filter capacitor C1, C2 that is connected in parallel between the power positive cathode end.When Hall element IC2 senses the polarity of the magnetic field change, its second pin 2 and the 3rd pin 3 output pulse signals, control the alternate conduction of the first triode Q1 and the second triode Q2, thereby make stator coil L1, L2 alternation, form alternating magnetic field and drive rotor, realize the driving of radiator fan.
because the utility model increases pressure unit 10, rectification unit 20 and filter unit 30, when the incoming transport electricity, AC power is converted to the galvanic current source provides direct voltage for drive circuit 40, equally, when the access DC power supply, the direct current of stable output, therefore, no matter access DC power supply or AC power, after rectification unit 20 and filter unit 30 rectifying and wave-filterings, equal exportable galvanic currents, rotating speed and the air output of radiator fan have effectively been improved, and then improved the radiating effect of radiator fan, in addition, the accessible DC power supply of the utility model and AC power, make the applicability of radiator fan more extensive, can be applicable to more place.
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.
Claims (4)
1. alternating current-direct current radiator fan drive circuit, it is characterized in that: it comprises
Pressure unit with the input electric connection of AC power, carries out step-down to the alternating current of inputting;
Rectification unit is electrically connected with described pressure unit, and the alternating current after step-down is carried out rectification, and this rectification unit is bridge rectifier;
Filter unit is electrically connected with described rectification unit, the alternating current after rectification is carried out filtering convert DC power supply to, for drive circuit provides direct voltage;
And drive circuit, be electrically connected with described DC fan stator coil, drive DC fan.
2. alternating current-direct current radiator fan drive circuit according to claim 1, it is characterized in that: described pressure unit comprises the 3rd electric capacity and the first resistance that is connected in parallel.
3. alternating current-direct current radiator fan drive circuit according to claim 1, it is characterized in that: described filter unit has a filter capacitor at least.
4. alternating current-direct current radiator fan drive circuit according to claim 1, it is characterized in that: described drive circuit comprises the first triode, the second triode and Hall element, wherein,
The collector electrode of described the first triode and wherein stator coil one an end electric connection, an end of the collector electrode of the second triode and another stator coil is electrically connected, and the other end of two stator coils is connected to the positive terminal of DC power supply jointly;
The 3rd pin of the base stage of described the first triode and Hall element is electrically connected, and its node is connected in the positive terminal of DC power supply by the 4th resistance; The second pin of the base stage of described the second triode and Hall element is electrically connected, and its node is connected in the positive terminal of DC power supply by the 3rd resistance;
The emitter of described the first triode, the second triode and the 4th pin of Hall element are connected to the negative pole end of DC power supply jointly, and the first pin of Hall element is connected to the positive terminal of DC power supply by the second resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014294 CN203278726U (en) | 2013-01-11 | 2013-01-11 | Driving circuit of AC-DC heat dissipation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014294 CN203278726U (en) | 2013-01-11 | 2013-01-11 | Driving circuit of AC-DC heat dissipation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278726U true CN203278726U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320014294 Expired - Fee Related CN203278726U (en) | 2013-01-11 | 2013-01-11 | Driving circuit of AC-DC heat dissipation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065313A (en) * | 2015-08-07 | 2015-11-18 | 深圳市三巨电机有限公司 | Alternating and direct current fan control device |
-
2013
- 2013-01-11 CN CN 201320014294 patent/CN203278726U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065313A (en) * | 2015-08-07 | 2015-11-18 | 深圳市三巨电机有限公司 | Alternating and direct current fan control device |
| CN105065313B (en) * | 2015-08-07 | 2017-08-08 | 深圳市三巨电机有限公司 | A kind of alternating current-direct current fan control 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20190111 |