CN103513737A - Fan power supply circuit - Google Patents
Fan power supply circuit Download PDFInfo
- Publication number
- CN103513737A CN103513737A CN201210209953.XA CN201210209953A CN103513737A CN 103513737 A CN103513737 A CN 103513737A CN 201210209953 A CN201210209953 A CN 201210209953A CN 103513737 A CN103513737 A CN 103513737A
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- Prior art keywords
- fan
- field effect
- effect transistor
- resistance
- feed circuit
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Abstract
The invention provides a fan power supply circuit. The fan power supply circuit controls a direct-current power supply to supply power to a fan according to a control signal output by a super input and output chip. The fan power supply circuit comprises a control unit, an indicating unit and a switching unit, wherein the control unit is connected between the super input and output chip and the fan, the control unit comprises a capacitor, when the control signal is a low level signal, the control unit controls the direct-current power supply to supply power to the fan, and the capacitor is charged; when the control signal is a high level signal, the capacitor supplies power to the fan. The indicating unit comprises an indicating lamp used for indicating whether the fan operates normally or not. The switching unit is used for amplifying a rotating speed signal output by the fan and transmitting the rotating speed signal to the super input and output chip.
Description
Technical field
The present invention relates to a kind of fan feed circuit.
Background technology
Central processing unit (Central Processing Unit, CPU) is the important spare part in server, computer.Along with improving constantly of CPU calculation process ability, the power consumption of CPU also improves thereupon, utilize fan cooling just to become conventional method, however the power supply instability of server, computer fan, while even stopping power supply, and rotation speed of the fan reduces even to stop operating and can reduce the radiating effect of CPU.
Summary of the invention
In view of this, be necessary to provide a kind of whether normal fan feed circuit of fan power supply of indicating.
The invention provides a kind of fan feed circuit, its control signal according to super I/O chip output is controlled direct supply and is powered to fan.These fan feed circuit comprise control module indicating member and converting unit.This control module is connected between this super I/O chip and fan, and this control module comprises an electric capacity, and when this control signal is low level signal, this control module is controlled this direct supply and powered to fan, and to this capacitor charging; When this control signal is high level signal, by this electric capacity, be that fan is powered.This indicating member comprises that pilot lamp is used to indicate this fan and whether runs well.This converting unit is used for the tach signal of this fan output being amplified and being sent to this super I/O chip.
Compared to prior art, fan feed circuit of the present invention have indicating member, utilize this pilot lamp can indicate fan because of undesired the stopping operating of powering, thereby user can conveniently know that whether fan running is normal.
Accompanying drawing explanation
Fig. 1 is fan feed circuit one better embodiment physical circuit schematic diagram of the present invention.
Main element symbol description
| Fan feed circuit | 1 |
| Super I/ |
2 |
| |
3 |
| Direct supply | |
| Control module | |
| 11 | |
| Indicating |
12 |
| Converting |
13 |
| Electric capacity | C1 |
| The first resistance | R1 |
| The second resistance | R2 |
| The 3rd resistance | R3 |
| The 4th resistance | R4 |
| The 5th resistance | R5 |
| The 6th resistance | R6 |
| The first field effect transistor | Q1 |
| The second field effect transistor | Q2 |
| Pilot lamp | D1 |
| Diode | D2 |
| Power end | VCC |
| Earth terminal | GND |
| Signal output part | TACH |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done to concrete introduction.
Refer to Fig. 1, Fig. 1 is fan feed circuit 1 one better embodiment physical circuit schematic diagram of the present invention.These fan feed circuit 1 are according to super I/O chip 2(Super Input and Output, SIO) control signal of output controls direct supply Vcc to fan 3 power supplies.These fan feed circuit 1 comprise control module 11, indicating member 12 and converting unit 13.This control module 11 is connected between this super I/O chip 2 and fan 3, this control module 11 comprises a capacitor C 1, when this control signal is low level signal, this control module 11 is controlled this direct supply Vcc to fan 3 power supplies, and to this capacitor C 1 charging; When this control signal is high level signal, by this capacitor C 1, be fan 3 power supplies.This indicating member 12 comprises that pilot lamp D1 is used to indicate this fan 3 and whether runs well.This converting unit 13 is for amplifying the tach signal of this fan 3 outputs and being sent to this super I/O chip.
In the present embodiment, the control signal of these super I/O chip 2 outputs is a pulse-width signal (Pulse Width modulation, PWM), in the prior art, CPU has temperature measuring function, coordinate the hardware state in server, computing machine to detect the temperature that chip can be detected CPU, and through these super I/O chip 2 these pwm signals of output.CPU adjusts the rotating speed of this fan 3 according to the dutycycle of this pwm signal.
In the present embodiment, this direct supply Vcc is the direct supply of 12V on mainboard.This fan 3 comprises power end VCC, earth terminal GND and signal output part TACH.This earth terminal GND ground connection, this signal output part TACH exports a fan rotating speed signals.
This control module 11 comprises the first resistance R 1, the second resistance R 2, the first field effect transistor Q1 and the second field effect transistor Q2.The grid of this first field effect transistor Q1 is connected through the super I/O chip 2 of this first resistance R 1 and this, and the source electrode of this first field effect transistor Q1 is connected with this direct supply Vcc through this second resistance R 2, the grounded drain of this first field effect transistor Q1.The grid of this second field effect transistor Q2 is connected with the source electrode of this first field effect transistor Q1, and the source electrode of this second field effect transistor Q2 is connected with this direct supply Vcc, and the drain electrode of this second field effect transistor Q2 is through this capacitor C 1 ground connection.The drain electrode of this second field effect transistor Q2 is connected with the power end VCC of this fan 3.
In the present embodiment, this first field effect transistor Q1 is n type field effect transistor, and this second field effect transistor Q2 is p type field effect transistor.
This indicating member 12 comprises the 3rd resistance R 3 and pilot lamp D1.The 3rd resistance R 3 and this pilot lamp D1 are serially connected with between the power end VCC and ground of this fan 3.In the present embodiment, this pilot lamp D1 is a light emitting diode.
This converting unit 13 comprises the 4th resistance R 4, the 5th resistance R 5 and the 6th resistance R 6.The signal output part TACH of this fan 3 is connected through the super I/O chip 2 of the 4th resistance R 4 and this, and the signal output part TACH of this fan 3 is also connected with this direct supply Vcc through the 6th resistance R 6.The 5th resistance R 5 is connected between this super I/O chip 2 and ground.
During work, these super I/O chip 2 outputs one control signal to this control module 11.When this control signal is high level, this first field effect transistor Q1 conducting, also conducting of this second field effect transistor Q2, this direct supply Vcc is this this fan 3 and 12 power supplies of this indicating member, this direct supply Vcc is this capacitor C 1 charging simultaneously.This pilot lamp D1 is lit accordingly.When this control signal is low level, this first field effect transistor Q1 cut-off, this second field effect transistor Q2 also ends, and this capacitor C 1 is this fan 3 and 12 power supplies of this indicating member, and this pilot lamp D1 is also lit.When this direct supply Vcc and this capacitor C 1 cannot be normally this fan 3 power supply, this pilot lamp extinguishes.
In the present embodiment, the high level signal amplitude that this super I/O chip 2 receives is 3.3V.This converting unit 13 utilizes the variation of this direct supply Vcc dividing potential drop in the 5th resistance R 5 that the fan rotating speed signals of the signal output part TACH output of this fan 3 is converted to digital signal.When this signal output part TACH exports a low level signal, what this super I/O chip 2 received is also a low level signal; When this signal output part TACH exports a high level signal, what this super input/output signal received is the dividing potential drop of this direct supply Vcc in the 5th resistance R 5, and the high level signal of this signal output part TACH output is converted to and is applicable to the high level signal that this super I/O chip 2 receives.
In one embodiment, this converting unit 13 also comprises diode D2, and this diode D2 is connected between this signal output part TACH and this direct supply Vcc.Owing to comprising telefault in fan 3, when this fan 3 is abnormal, the damage of the induced voltage of telefault that this diode D2 can effectively avoid fan 3 to this super I/O chip 2.
In one present embodiment, this pilot lamp D1 can be arranged on the front panel of cabinet, thereby can make user conveniently obtain the state that turns of fan.
Use above-mentioned fan feed circuit, can indicate fan because of undesired the stopping operating of powering, thereby user can conveniently be known the operating condition of fan.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to better enforcement, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.
Claims (9)
1. fan feed circuit, its control signal according to super I/O chip output is controlled direct supply and is powered to fan; These fan feed circuit comprise control module indicating member and converting unit; This control module is connected between this super I/O chip and fan, and this control module comprises an electric capacity, and when this control signal is low level signal, this control module is controlled this direct supply and powered to fan, and to this capacitor charging; When this control signal is high level signal, by this electric capacity, be that fan is powered; This indicating member comprises that pilot lamp is used to indicate this fan and whether runs well; This converting unit is used for the tach signal of this fan output being amplified and being sent to this super I/O chip.
2. fan feed circuit as claimed in claim 1, is characterized in that: this fan comprises power end, earth terminal and signal output part; This earth terminal ground connection, this signal output part output speed signal.
3. fan feed circuit as claimed in claim 2, is characterized in that: this control module comprises the first resistance, the second resistance, the first field effect transistor and the second field effect transistor; The grid of this first field effect transistor is connected with this super I/O chip through this first resistance, and the source electrode of this first field effect transistor is connected with this direct supply through this second resistance, the grounded drain of this first field effect transistor; The grid of this second field effect transistor is connected with the source electrode of this first field effect transistor, and the source electrode of this second field effect transistor is connected with this direct supply, and the drain electrode of this second field effect transistor is through this capacity earth; The drain electrode of this second field effect transistor is connected with the power end of this fan.
4. fan feed circuit as claimed in claim 3, is characterized in that: this first field effect transistor is n type field effect transistor, and this second field effect transistor is p type field effect transistor.
5. fan feed circuit as claimed in claim 3, is characterized in that: this indicating member comprises the 3rd resistance and pilot lamp; The 3rd resistance and this pilot lamp are serially connected with between the power end and ground of this fan.
6. fan feed circuit as claimed in claim 5, is characterized in that: this pilot lamp is arranged on case front panel.
7. fan feed circuit as claimed in claim 5, is characterized in that: this pilot lamp is light emitting diode.
8. fan feed circuit as claimed in claim 5, is characterized in that: this converting unit comprises the 4th resistance, the 5th resistance and the 6th resistance; The signal output part of this fan is connected with this super I/O chip through the 4th resistance, and the signal output part of this fan is also connected with this direct supply through the 6th resistance; The 5th resistance is connected between this super I/O chip and ground.
9. fan feed circuit as claimed in claim 8, is characterized in that: this converting unit also comprises diode, and this diode is connected between this signal output part and this direct supply.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209953.XA CN103513737A (en) | 2012-06-25 | 2012-06-25 | Fan power supply circuit |
| TW101123101A TW201400709A (en) | 2012-06-25 | 2012-06-27 | Fan power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209953.XA CN103513737A (en) | 2012-06-25 | 2012-06-25 | Fan power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103513737A true CN103513737A (en) | 2014-01-15 |
Family
ID=49896612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210209953.XA Pending CN103513737A (en) | 2012-06-25 | 2012-06-25 | Fan power supply circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103513737A (en) |
| TW (1) | TW201400709A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105045364A (en) * | 2015-07-21 | 2015-11-11 | 北京比特大陆科技有限公司 | Serial power supply circuit, virtual digital coin mining machine and computer server |
| CN105634347A (en) * | 2014-10-27 | 2016-06-01 | 深圳兴奇宏科技有限公司 | Fan motor signal control system |
| CN105807878A (en) * | 2014-12-27 | 2016-07-27 | 鸿富锦精密工业(武汉)有限公司 | An electronic apparatus power supply protection system |
| CN111583533A (en) * | 2020-04-29 | 2020-08-25 | 深圳创维－Rgb电子有限公司 | Control system of storage cabinet and storage cabinet |
| CN111708425A (en) * | 2020-05-22 | 2020-09-25 | 广州裕芯电子科技有限公司 | Portable fan control chip, circuit and method integrating indication function |
-
2012
- 2012-06-25 CN CN201210209953.XA patent/CN103513737A/en active Pending
- 2012-06-27 TW TW101123101A patent/TW201400709A/en unknown
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634347A (en) * | 2014-10-27 | 2016-06-01 | 深圳兴奇宏科技有限公司 | Fan motor signal control system |
| CN105634347B (en) * | 2014-10-27 | 2018-10-19 | 深圳兴奇宏科技有限公司 | fan motor signal control system |
| CN105807878A (en) * | 2014-12-27 | 2016-07-27 | 鸿富锦精密工业(武汉)有限公司 | An electronic apparatus power supply protection system |
| CN105807878B (en) * | 2014-12-27 | 2019-03-08 | 鸿富锦精密工业(武汉)有限公司 | Power electronic equipment protects system |
| CN105045364A (en) * | 2015-07-21 | 2015-11-11 | 北京比特大陆科技有限公司 | Serial power supply circuit, virtual digital coin mining machine and computer server |
| CN111583533A (en) * | 2020-04-29 | 2020-08-25 | 深圳创维－Rgb电子有限公司 | Control system of storage cabinet and storage cabinet |
| CN111583533B (en) * | 2020-04-29 | 2022-03-08 | 深圳创维－Rgb电子有限公司 | Control system of storage cabinet and storage cabinet |
| CN111708425A (en) * | 2020-05-22 | 2020-09-25 | 广州裕芯电子科技有限公司 | Portable fan control chip, circuit and method integrating indication function |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201400709A (en) | 2014-01-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |