CN202918233U - Control circuit for controlling clockwise/anticlockwise rotation of brushless direct-current fan - Google Patents
Control circuit for controlling clockwise/anticlockwise rotation of brushless direct-current fan Download PDFInfo
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- CN202918233U CN202918233U CN 201220255774 CN201220255774U CN202918233U CN 202918233 U CN202918233 U CN 202918233U CN 201220255774 CN201220255774 CN 201220255774 CN 201220255774 U CN201220255774 U CN 201220255774U CN 202918233 U CN202918233 U CN 202918233U
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- triode
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- control circuit
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Abstract
Disclosed is a control circuit for controlling clockwise/anticlockwise rotation of a brushless direct-current fan. The control circuit is characterized by comprising an input unit and an output switching unit connected with the input unit. With the circuit, a direct-current brushless fan with clockwise/anticlockwise rotation function can be effectively controlled to rotate clockwise or anticlockwise according to system demands, a computer can freely choose between clockwise rotation and anticlockwise rotation at the turn-on/off moment, and the circuit has the characteristics of stable performance, flexible control and the like.
Description
[technical field]
The utility model relates to DC fan, refers to that mainly a kind of have can be by outside high-low level control signal, the brushless DC fan control loop of control fan rotating function.
[background technology]
The purpose of this utility model is existing in order to overcome, and the rotating fan control circuitry can only in energising moment realization fan reverse rotation function, can not be controlled by external signal.And provide a kind of brushless DC fan of realizing to be rotated in the forward or reverse rotation according to system requirements control fan by outside high-low level signal, greatly improved the flexibility of brushless direct-current rotating fan control.
[summary of the invention]
The purpose of this utility model is existing in order to overcome, and the rotating fan control circuitry can only in energising moment realization fan reverse rotation function, can not be controlled by external signal.And provide a kind of brushless DC fan of realizing to be rotated in the forward or reverse rotation according to system requirements control fan by outside high-low level signal, greatly improved the flexibility of brushless direct-current rotating fan control.
The realization the technical solution of the utility model is: the brushless DC fan control circuit of this rotating function comprises: input unit, output switching unit; Described input unit is connected with described output switching unit.
Described input unit includes triode Q1 and triode Q2, wherein resistance R 3 one terminates on the base stage of triode Q1, resistance R 4 one terminates on the base stage of triode Q2, and the other end of resistance R 3 links to each other with resistance R 1 with an other end of resistance R 4 simultaneously, connect outside high-low level control signal, resistance R 2 is connected across between power supply and the triode Q1 collector electrode, and resistance R 5 is connected across between triode Q2 emitter and the power supply.
Described output switching unit includes chip U, triode Q3, triode Q4, triode Q5 and triode Q6, wherein triode Q3 base stage links to each other with triode Q6 base stage, resistance R 7 is connected across between the base stage of triode Q2 collector electrode and triode Q3 and triode Q6, the base stage of triode Q4 links to each other with the base stage of triode Q5, resistance R 6 is connected across between the base stage of triode Q1 emitter and triode Q4 and triode Q5, triode Q4 links to each other with the collector electrode of triode Q6, meet chip U, triode Q3 links to each other with the collector electrode of triode Q5, connect the chip U other end, triode Q4 links to each other with the emitter of triode Q3, meet the first output OUT1, triode Q5 links to each other with the emitter of triode Q6, meets the second output OUT2.
The beneficial effect that the utlity model has: this circuit can realize effectively that brush DC is just reversing fan and can control fan according to system requirements and rotate forward or backwards, can realize that computer freely selects to be rotated in the forward or reverse rotation in start or shutdown moment, this circuit has stable performance, controls the characteristics such as flexible.
[description of drawings]
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Wherein: 1, input unit; 2, output conversion circuit.
[embodiment]
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in the figure, this fan circuit comprises input unit 1 and output conversion circuit 2.This circuit utilizes the forward and reverse rotation of the outside high-low level control signal control fan of system.
1. input unit 1: its major function is according to external control signal conversion output control level.
2. export converting unit 2.
The brushless DC fan control circuit of this rotating function comprises: input unit, output switching unit; Input unit is connected with the output switching unit.
Described input unit includes triode Q1 and triode Q2, wherein resistance R 3 one terminates on the base stage of triode Q1, resistance R 4 one terminates on the base stage of triode Q2, and the other end of resistance R 3 links to each other with resistance R 1 with an other end of resistance R 4 simultaneously, connect outside high-low level control signal, resistance R 2 is connected across between power supply and the triode Q1 collector electrode, and resistance R 5 is connected across between triode Q2 emitter and the power supply.
Described output switching unit includes chip U, triode Q3, triode Q4, triode Q5 and triode Q6, wherein triode Q3 base stage links to each other with triode Q6 base stage, resistance R 7 is connected across between the base stage of triode Q2 collector electrode and triode Q3 and triode Q6, the base stage of triode Q4 links to each other with the base stage of triode Q5, resistance R 6 is connected across between the base stage of triode Q1 emitter and triode Q4 and triode Q5, triode Q4 links to each other with the collector electrode of triode Q6, meet chip U, triode Q3 links to each other with the collector electrode of triode Q5, connect the chip U other end, triode Q4 links to each other with the emitter of triode Q3, meet the first output OUT1, triode Q5 links to each other with the emitter of triode Q6, meets the second output OUT2.
Operation principle
When outside during without control signal input or H (high level) input, triode Q1, triode Q4, triode Q5 conducting, triode Q4 and triode Q5 emitter pio chip (U) signal, fan prolongs a direction rotation.When the outside is the L(low level) when inputting, triode Q2, triode Q3, triode Q6 conducting, turning-over of chip (U) signal code outbound course, fan begins opposite spin.
Claims (3)
1. a positive-rotation reversal-rotation brushless direct-current fan control circuit is characterized in that comprising input unit, output switching unit, and input unit is connected with the output switching unit.
2. positive-rotation reversal-rotation brushless direct-current fan control circuit as claimed in claim 1, it is characterized in that described input unit includes triode Q1 and triode Q2, wherein resistance R 3 one terminates on the base stage of triode Q1, resistance R 4 one terminates on the base stage of triode Q2, and the other end of resistance R 3 links to each other with resistance R 1 with an other end of resistance R 4 simultaneously, connect outside high-low level control signal, resistance R 2 is connected across between power supply and the triode Q1 collector electrode, and resistance R 5 is connected across between triode Q2 emitter and the power supply.
3. positive-rotation reversal-rotation brushless direct-current fan control circuit as claimed in claim 1, can carry out at any time rotating according to system's automatic or manual mode switches, it is characterized in that, described output switching unit includes chip U, triode Q3, triode Q4, triode Q5 and triode Q6, wherein triode Q3 base stage links to each other with triode Q6 base stage, resistance R 7 is connected across between the base stage of triode Q2 collector electrode and triode Q3 and triode Q6, the base stage of triode Q4 links to each other with the base stage of triode Q5, resistance R 6 is connected across between the base stage of triode Q1 emitter and triode Q4 and triode Q5, triode Q4 links to each other with the collector electrode of triode Q6, meet chip U, triode Q3 links to each other with the collector electrode of triode Q5, connect the chip U other end, triode Q4 links to each other with the emitter of triode Q3, meet the first output OUT1, triode Q5 links to each other with the emitter of triode Q6, meets the second output OUT2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255774 CN202918233U (en) | 2012-05-31 | 2012-05-31 | Control circuit for controlling clockwise/anticlockwise rotation of brushless direct-current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255774 CN202918233U (en) | 2012-05-31 | 2012-05-31 | Control circuit for controlling clockwise/anticlockwise rotation of brushless direct-current fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202918233U true CN202918233U (en) | 2013-05-01 |
Family
ID=48166508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220255774 Expired - Lifetime CN202918233U (en) | 2012-05-31 | 2012-05-31 | Control circuit for controlling clockwise/anticlockwise rotation of brushless direct-current fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202918233U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675717A (en) * | 2013-11-26 | 2015-06-03 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN104753413A (en) * | 2013-12-31 | 2015-07-01 | 海洋王（东莞）照明科技有限公司 | Control circuit |
-
2012
- 2012-05-31 CN CN 201220255774 patent/CN202918233U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675717A (en) * | 2013-11-26 | 2015-06-03 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN104675717B (en) * | 2013-11-26 | 2017-05-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN104753413A (en) * | 2013-12-31 | 2015-07-01 | 海洋王（东莞）照明科技有限公司 | Control circuit |
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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 |
Granted publication date: 20130501 |
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| CX01 | Expiry of patent term |