CN202579252U - Control circuit of fan - Google Patents
Control circuit of fan Download PDFInfo
- Publication number
- CN202579252U CN202579252U CN 201220098215 CN201220098215U CN202579252U CN 202579252 U CN202579252 U CN 202579252U CN 201220098215 CN201220098215 CN 201220098215 CN 201220098215 U CN201220098215 U CN 201220098215U CN 202579252 U CN202579252 U CN 202579252U
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- fan
- circuit unit
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- vdc
- triode
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- 239000003381 stabilizer Substances 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a control circuit of a fan. The control circuit comprises a direct current voltage generation circuit unit and a switching circuit of the fan, wherein the input end of the direct current voltage generation circuit unit is connected with an external power supply, and the output end of the direct current voltage generation circuit unit is connected with the positive electrode of the fan; the negative electrode of the fan is connected with the switching circuit of the fan; and the switching circuit of the fan comprises a first voltage share circuit unit, a second voltage share circuit unit, a third voltage share circuit unit, a first triode, a second triode and a third triode. By utilizing the control circuit, the heat dissipation of a switching power supply can be realized, and the long-time running service life of the fan can be prolonged; and the control circuit has the characteristics of less elements, low cost, multiple functions, high additional value and the like.
Description
Technical field
The utility model relates to a kind of control circuit of fan.
Background technique
Along with the progress of science and technology, the medium-and-large-sized power electronic equipment of part progressively makes the transition towards aspects such as miniaturization, light weight, reliability height development, in the advantage of high-power linear power supply progressively replaced by middle high power switching power supply.Equally, middle high power switching power supply this moment just occurs the problem of power supply heat sinking aspect along with the miniaturization of power electronic equipment also progressively is miniaturization transition.In order to promote the reliability of power supply; A lot of companies use switch power to carry radiation fan and solve the power supply heat sinking problem; But the difference that has Environmental Conditions because of power electronic equipment; Radiation fan working life is short, causes the power supply can't proper functioning even damage, the quality of large power, electrically product-derived in the final influence.
The model utility content
In order to solve above technical problem, the utility model provides a kind of control circuit of fan.
The utility model discloses a kind of control circuit of fan; The switching circuit that comprises VDC generative circuit unit, fan; Described VDC generative circuit unit input end links to each other with the power supply that adds; Its output terminal links to each other with the positive pole of fan; Described fan negative pole links to each other with the switching circuit of described fan, and the switching circuit of described fan comprises the first bleeder circuit unit, the second bleeder circuit unit, the 3rd bleeder circuit unit, first triode, second triode, the 3rd triode
The output terminal of the first termination VDC generative circuit unit, the described first bleeder circuit unit, its second end ground connection;
The output terminal of the first termination VDC generative circuit unit, the described second bleeder circuit unit, the collector electrode of described first triode of its second termination;
Unit, described the 3rd dividing potential drop road first end connects the base stage of described the 3rd triode, and its second end connects the base stage of described first triode;
Described first transistor base connects the common junction of the first bleeder circuit unit, its grounded-emitter connection, and its collector electrode connects second end of described second bleeder circuit;
Described second transistor base connects the common junction of the second bleeder circuit unit; Its collector electrode is through connecting described first transistor base after the common junction of the 3rd bleeder circuit, its emitter connects the output terminal of described VDC generative circuit unit;
Described the 3rd transistor base connects first end of the 3rd bleeder circuit, and its collector electrode connects the negative pole of fan, its grounded-emitter connection.
In the control circuit of the described fan of the utility model, described VDC generative circuit unit comprises inductance, diode, and described inductance connects the positive pole of diode, and the negative pole of described diode is connected with the positive pole of electric fan.
In the control circuit of the described fan of the utility model, also comprise first electric capacity, described first electric capacity is parallelly connected with described VDC generative circuit unit.
In the control circuit of the described fan of the utility model, also comprise first resistance, described VDC generative circuit unit is connected with the positive pole of fan through described first resistance.
In the control circuit of the described fan of the utility model, also comprise second resistance and the 3rd resistance, described second resistance be in parallel with described first electric capacity after the 3rd resistance is parallelly connected.
In the control circuit of the described fan of the utility model; Also comprise the voltage-stabiliser tube and second electric capacity; The negative pole of described voltage-stabiliser tube links to each other with the output terminal of described VDC generative circuit unit; Its positive pole links to each other with first end of first bleeder circuit, and described second electric capacity, one end connects the common junction of described first bleeder circuit, the other end ground connection.
In the control circuit of the described fan of the utility model, also comprise the 4th resistance and the 3rd electric capacity, an end connects the common junction of described the 3rd bleeder circuit, the other end ground connection after described the 4th resistance and the 3rd electric capacity parallel connection.
In the control circuit of the described fan of the utility model, also comprise the 5th resistance, described the 5th resistance one end links to each other with the emitter of described second triode, and the other end links to each other with the output terminal of described VDC generative circuit unit.
Implement the control circuit of the fan of the utility model, have following beneficial technical effects:
The utility model has solved the switch power heat dissipation problem, has promoted the life-span of the long-time running of fan; Have characteristics such as number of elements is few, low-cost, multi-functional, high added value.
Description of drawings
Fig. 1 is the control circuit structure skeleton diagram of a kind of fan of the utility model;
Embodiment
By the technology contents, the structure characteristics that specify the utility model, realized purpose and effect, know clearly below in conjunction with mode of execution and conjunction with figs. and give explanation.
See also Fig. 1; A kind of control circuit of fan; Comprise: inductance L 100B, diode D150, first capacitor C 152, first resistance R 156, second resistance R 159, second resistance R 160, second capacitor C 150, voltage-stabiliser tube ZD150, first bleeder circuit, the first triode Q150, second bleeder circuit, the second triode Q151, the 3rd bleeder circuit, the 4th resistance R 155 and the 3rd capacitor C 151, the 5th resistance R 158; The 3rd triode Q152, electric fan CN1
Wherein, first bleeder circuit of resistance R 150 and R151 composition;
Second bleeder circuit that resistance R 153 and R152 form;
The 3rd bleeder circuit that resistance R 155 and R157 form.
Inductance L 100B, diode D150 form VDC generative circuit unit, and inductance L 100B connects the positive pole of diode D150, and the negative pole of diode D150 is connected with the positive pole of electric fan CN1.
The working principle of this circuit is:
The parameter of each electric elements is following: inductance L 100 is 43.2Uh; Model is: TR-6104.
Resistance R 150, R151, R152, R153, R154, R155, R156, R157, R158, R159, R160 are respectively 2.55K Ω, 470 Ω, 1.3K Ω, 1.1K Ω, 1K Ω, 910 Ω, 1 Ω, 1K Ω, 1.1K Ω, 4.7K Ω, 4.7K Ω.
Diode D150, ZD150 are respectively SB2100,11V;
Triode Q150, Q151, Q152 are respectively PMBT2222A, PMBT2907A, HE8050L;
Capacitor C 150, C152 are respectively 100PF, 47UF; Fan CN1 is the 15cm+TUBE/TYPE:B superelevation.
After the power supply start; When output loading during smaller or equal to 20A; Inductor coil on the output inductor L100 will produce an induced voltage; Through obtaining a 11V left and right sides VDC Vcc behind the commutation diode D150, consider ripple after insurance resistance R 156 is received the anode of fan through C152 electric capacity, the fan negative terminal is received ground through the NPN type triode Q152CE utmost point; Triode Q150 base stage is then received through voltage-stabiliser tube ZD150 and divider resistance R150, R151 sampling (below the 0.5V) in another road; The divider resistance R152 that Q150 is on the base stage of cut-off state .Q151 meets Vcc; The C that R153 meets Q150 extremely goes up. because of Q150 is in cut-off state; So the B utmost point of Q151 is in high petential; Q151 also is in cut-off state. and the base stage of Q152 is received the CE utmost point of Q151PNP and is received on the VDC Vcc through R158 through divider resistance R157, and Q151 is operated in cut-off state, the Q152B pole tension less than 0.5V so also be in cut-off state. radiation fan is not worked.
When output loading during greater than 20A; Through obtaining a 12V left and right sides VDC Vcc behind the commutation diode D150; Then receive triode Q150 base stage through voltage-stabiliser tube ZD150 and divider resistance R150 R151 sampling (about 0.7V); Make Q150 be on state. so the Q150 base voltage is transferred to low potential, make it also be on state. and the base stage of Q152 is received the CE utmost point of Q151PNP and is received on the VDC Vcc through R158 through divider resistance R157; And Q151 is operated on state, and the Q152B pole tension also is on state greater than the 0.7V event. radiation fan is started working.
Implement the control circuit of the fan of the utility model, have following beneficial technical effects:
The utility model has solved the switch power heat dissipation problem, has promoted the life-span of the long-time running of fan; Have characteristics such as number of elements is few, low-cost, multi-functional, high added value.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection domain of the utility model.
Claims (8)
1. the control circuit of a fan; The switching circuit that comprises VDC generative circuit unit, fan; Described VDC generative circuit unit input end links to each other with the power supply that adds; Its output terminal links to each other with the positive pole of fan; Described fan negative pole links to each other with the switching circuit of described fan, it is characterized in that: the switching circuit of described fan comprises the first bleeder circuit unit, the second bleeder circuit unit, the 3rd bleeder circuit unit, first triode, second triode, the 3rd triode
The output terminal of the first termination VDC generative circuit unit, the described first bleeder circuit unit, its second end ground connection;
The output terminal of the first termination VDC generative circuit unit, the described second bleeder circuit unit, the collector electrode of described first triode of its second termination;
Unit, described the 3rd dividing potential drop road first end connects the base stage of described the 3rd triode, and its second end connects the base stage of described first triode;
Described first transistor base connects the common junction of the first bleeder circuit unit, its grounded-emitter connection, and its collector electrode connects second end of described second bleeder circuit;
Described second transistor base connects the common junction of the second bleeder circuit unit; Its collector electrode is through connecting described first transistor base after the common junction of the 3rd bleeder circuit, its emitter connects the output terminal of described VDC generative circuit unit;
Described the 3rd transistor base connects first end of the 3rd bleeder circuit, and its collector electrode connects the negative pole of fan, its grounded-emitter connection.
2. the control circuit of fan according to claim 1 is characterized in that, described VDC generative circuit unit comprises inductance, diode, and described inductance connects the positive pole of diode, and the negative pole of described diode is connected with the positive pole of electric fan.
3. the control circuit of fan according to claim 1 is characterized in that, also comprises first electric capacity, and described first electric capacity is parallelly connected with described VDC generative circuit unit.
4. the control circuit of fan according to claim 1 is characterized in that, also comprises first resistance, and described VDC generative circuit unit is connected with the positive pole of fan through described first resistance.
5. the control circuit of fan according to claim 3 is characterized in that, also comprises second resistance and the 3rd resistance, described second resistance be in parallel with described first electric capacity after the 3rd resistance is parallelly connected.
6. the control circuit of fan according to claim 1; It is characterized in that; Also comprise the voltage-stabiliser tube and second electric capacity, the negative pole of described voltage-stabiliser tube links to each other with the output terminal of described VDC generative circuit unit, and its positive pole links to each other with first end of first bleeder circuit; Described second electric capacity, one end connects the common junction of described first bleeder circuit, the other end ground connection.
7. the control circuit of fan according to claim 1 is characterized in that, also comprises the 4th resistance and the 3rd electric capacity, and an end connects the common junction of described the 3rd bleeder circuit, the other end ground connection after described the 4th resistance and the 3rd electric capacity parallel connection.
8. the control circuit of fan according to claim 1 is characterized in that, also comprises the 5th resistance, and described the 5th resistance one end links to each other with the emitter of described second triode, and the other end links to each other with the output terminal of described VDC generative circuit unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220098215 CN202579252U (en) | 2012-03-15 | 2012-03-15 | Control circuit of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220098215 CN202579252U (en) | 2012-03-15 | 2012-03-15 | Control circuit of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579252U true CN202579252U (en) | 2012-12-05 |
Family
ID=47248668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220098215 Expired - Lifetime CN202579252U (en) | 2012-03-15 | 2012-03-15 | Control circuit of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382716A (en) * | 2020-10-22 | 2022-04-22 | 广东美的环境电器制造有限公司 | Control circuit, control method, control device, equipment and medium of electric fan |
-
2012
- 2012-03-15 CN CN 201220098215 patent/CN202579252U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382716A (en) * | 2020-10-22 | 2022-04-22 | 广东美的环境电器制造有限公司 | Control circuit, control method, control device, equipment and medium of electric fan |
| CN114382716B (en) * | 2020-10-22 | 2023-11-21 | 广东美的环境电器制造有限公司 | Control circuit, control method, device, equipment and medium of electric fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent of Mingwei (Guangzhou) Electronics Co.,Ltd. The person in charge Document name: Notice of expiration and termination of patent right |