CN205281389U - Notebook computer heat dissipation base circuit of intelligence speed governing - Google Patents
Notebook computer heat dissipation base circuit of intelligence speed governing Download PDFInfo
- Publication number
- CN205281389U CN205281389U CN201521087879.4U CN201521087879U CN205281389U CN 205281389 U CN205281389 U CN 205281389U CN 201521087879 U CN201521087879 U CN 201521087879U CN 205281389 U CN205281389 U CN 205281389U
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- CN
- China
- Prior art keywords
- temperature sensor
- operational amplifier
- audion
- holder
- laptop computer
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- Expired - Fee Related
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Abstract
The utility model discloses a notebook computer heat dissipation base circuit of intelligence speed governing, including install the heat dissipation be arranged in on the base this computer of detection pen note air outlet temperature temperature sensor, be used for enlargeing temperature sensor output signal's operational amplifier and install the triode at notebook computer heat dissipation base power supply circuit, wherein temperature sensor gathers and goes out to be defeated by operational amplifier behind the temperature signal, inputs the triode to temperature sensor's output signal after operational amplifier enlargies, the triode is used for the control base power supply circuit break -make of dispelling the heat, the utility model discloses simple structure, reasonable in design, it is energy -concerving and environment -protective moreover, very good result of use and market prospect have.
Description
Technical field
This utility model relates to notebook base, is specifically related to the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating.
Background technology
Development along with information technology, portable notebook computer utilization at work is more and more extensive, the long-play of large software, notebook computer can be caused to crash, it is exactly generally that system temperature is too high to cause, for the problem solving laptop radiating, people devise holder for dissipating heat of laptop computer, but holder for dissipating heat of laptop computer in the market mostly can not speed governing or manual governing, owing to the rising of computer system temperature needs the regular hour, and sometimes computer does not run for a long time, after dormancy, heat dissipation base is not required to significantly high rotating speed, therefore, the waste of power resource can be caused, also bring bad Consumer's Experience simultaneously.
Summary of the invention
For the deficiency that prior art exists, this utility model provides the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating, solve the problem that in prior art, heat dissipation base cannot be automatically adjusted fan speed, this utility model simple in construction, reasonable in design, and energy-conserving and environment-protective, there is extraordinary result of use and market prospect.
In order to realize above-mentioned task, this utility model adopts the following technical scheme that and is achieved: the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating, including being arranged on heat dissipation base for detecting the temperature sensor of notebook computer air outlet temperature, for the operational amplifier amplifying temperature sensor output signal and the audion being arranged in holder for dissipating heat of laptop computer power circuit, wherein go out to be defeated by operational amplifier after temperature sensor collecting temperature signal, operational amplifier inputs audion after the output signal of temperature sensor is amplified, audion is used for controlling heat dissipation base power circuit break-make.
The Vin+ input of described temperature sensor is connected with excitation power supply Vcc, outfan accesses the in-phase input end of operational amplifier through the first resistant series, the inverting input of operational amplifier is connected to the second earth resistance and the 3rd resistance, the outfan of the other end of the 3rd resistance concatenation operation amplifier respectively and the base stage of audion, the colelctor electrode of audion is connected with the heat dissipation base power circuit of notebook computer, the grounded emitter of audion P.
It is provided with resistance between Vin+ input and the excitation power supply Vcc of described temperature sensor.
The GND end of described temperature sensor, Vin-end and the equal ground connection of Vout-end.
The thermistor temperature sensor of NTCMF51-202-3435 model is selected in described temperature sensor.
2SC8050 type silicon transistor selected by described audion.
Described operational amplifier selects CF741CT type integrated operational amplifier.
Compared with prior art, this utility model at least has the advantages that, the temperature sensor in this utility model circuit gathers computer heat radiation mouth leaving air temp, when temperature is lower than design temperature, temperature sensor output electric current too small cannot turn-on transistor, heat radiation rack does not work; When temperature increases to over design temperature, temperature sensor output electric current makes triode ON, heat radiation rack is started working, and temperature sensor output electric current raises with leaving air temp temperature and increases, and heat radiation rack rotation speed of the fan is accelerated therewith, realize computer heat radiation base rotating speed when computer temperature rises to raise, when computer temperature is in lower temperature, then rotating speed declines, and after computer dormancy, heat dissipation base quits work, thus saves energy, and promote Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
In accompanying drawing: 1, temperature sensor, 2, operational amplifier, 3, audion.
Detailed description of the invention
Below in conjunction with drawings and Examples, particular content of the present utility model is described in more detail; it should be noted that this utility model is not limited to specific examples below, all equivalents done on technical scheme basis each fall within protection domain of the present utility model.
As shown in Figure 1, a kind of holder for dissipating heat of laptop computer circuit of intelligent speed-regulating, a kind of holder for dissipating heat of laptop computer circuit of intelligent speed-regulating, including being arranged on heat dissipation base for detecting the temperature sensor 1 of notebook computer air outlet temperature, for amplifying the operational amplifier 2 that temperature sensor 1 exports signal and the audion 3 being arranged in holder for dissipating heat of laptop computer power circuit, wherein go out to be defeated by operational amplifier 2 after temperature sensor 1 collecting temperature signal, operational amplifier 2 inputs audion 3 after the output signal of temperature sensor 1 is amplified, audion 3 is used for controlling heat dissipation base power circuit break-make.
Referring to Fig. 2, the Vin+ input of temperature sensor 1 connects excitation power supply Vcc by resistance R0, the GND end of temperature sensor 1, Vin-end and the equal ground connection of Vout-end, the outfan of temperature sensor 1 accesses the in-phase input end of operational amplifier 2 through the first resistance R1 series connection, the inverting input of operational amplifier 2 is connected to the second earth resistance R2 and the three resistance R3, the outfan of the other end of the 3rd resistance R3 concatenation operation amplifier 2 respectively and the base stage of audion 3, the colelctor electrode of audion 3 is connected with the heat dissipation base power circuit of notebook computer, the grounded emitter of audion P.
In a particular embodiment, the thermistor temperature sensor of NTCMF51-202-3435 model is selected in temperature sensor of the present utility model, it is the thermistor temperature sensor of a kind of negative temperature coefficient, resistance value 2K ��, B value is 3435K, tolerance �� 1%, rated power 0.25W, use temperature range-40��110 DEG C. MF51 series of products are that enamel-covered wire epoxy resin application type, resistance and B value precision are high in the same direction, good insulating, and reliability is high, and time constant is little, and volume is little, and response speed is fast, can long-time stable work, and concordance is good. Its effect mainly detects the temperature of laptop radiating mouth in real time, and when the variations in temperature of thermovent, the resistance of critesistor changes, and then makes voltage output change.
Operational amplifier selection CF741CT type integrated operational amplifier, it is cheap, belongs to universal operational amplifier, and the micro voltage from pressure transducer output is mainly amplified in its effect, then the voltage after amplification is acted on transistor base.
Audion adopts 2SC8050 type silicon transistor, its absolute rating UCEO=20V, ICEO=1A, reverse blanking voltage is about 0.5V, and its effect mainly controls the break-make of computer heat radiation base power circuit, and when base voltage is higher than the reverse blanking voltage of audion, audion just turns on, and computer heat radiation base power circuit is connected, and fan is started working. Otherwise computer heat radiation base power circuit is then disconnected, and fan quits work.
Work process of the present utility model is as follows, when computer in a dormant state time, the temperature of thermovent is relatively low, the temperature sensor 1 being arranged on holder for dissipating heat of laptop computer detects this temperature signal, producing a micro voltage, micro voltage realizes voltage amplification by operational amplifier 2, when the voltage after amplifying is less than the reverse blanking voltage of audion 3, holder for dissipating heat of laptop computer power circuit disconnects, and fan does not run; When the voltage after amplifying is more than audion 3 reverse blanking voltage, holder for dissipating heat of laptop computer power circuit is connected, and fan brings into operation; When the temperature of thermovent raises, the critesistor resistance in temperature sensor 1 reduces, and output voltage increases, and rotation speed of the fan becomes big; When the temperature of thermovent reduces, the critesistor resistance in temperature sensor 1 increases, and output voltage reduces, and rotation speed of the fan diminishes.
With reference to Fig. 2, for reducing energy loss, according to formula P=U2/ R, we add a 10K �� resistance between excitation power supply and sensor, input impedance maximum 6.8K ��, the minima 2K �� of temperature sensor 1 know, temperature sensor 1 output range also reduces 1/3rd to commercial weight journey, about 60mV accordingly. Resistance R1For balancing resistance, R1=R2, it is about 1 Europe. Thus circuit theory diagrams are it can be seen that the amplification of operational amplifier CF741BM is 200, even if the voltage of temperature sensor output 3mV is also enough to connect audion 3.
Claims (7)
1. the holder for dissipating heat of laptop computer circuit of an intelligent speed-regulating, it is characterized in that, including the temperature sensor (1) being arranged on heat dissipation base for detecting notebook computer air outlet temperature, for the operational amplifier (2) amplifying temperature sensor (1) output signal and the audion (3) being arranged in holder for dissipating heat of laptop computer power circuit, go out to be defeated by operational amplifier (2) after wherein temperature sensor (1) collecting temperature signal, operational amplifier (2) inputs audion (3) after the output signal of temperature sensor (1) is amplified, audion (3) is used for controlling heat dissipation base power circuit break-make.
2. the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating according to claim 1, it is characterized in that, the Vin+ input of described temperature sensor (1) is connected with excitation power supply Vcc, outfan accesses the in-phase input end of operational amplifier (2) through the first resistance (R1) series connection, the inverting input of operational amplifier (2) is connected to the second earth resistance (R2) and the 3rd resistance (R3), the outfan of the other end of the 3rd resistance (R3) concatenation operation amplifier (2) respectively and the base stage of audion (3), the colelctor electrode of audion (3) is connected with the heat dissipation base power circuit of notebook computer, the grounded emitter of audion P.
3. the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating according to claim 1, it is characterised in that be provided with protective resistance (R0) between Vin+ input and the excitation power supply Vcc of described temperature sensor (1).
4. the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating according to claim 1, it is characterised in that the GND end of described temperature sensor (1), Vin-end and the equal ground connection of Vout-end.
5. the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating according to claim 1, it is characterised in that the thermistor temperature sensor of NTCMF51-202-3435 model is selected in described temperature sensor (1).
6. the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating according to claim 1, it is characterised in that 2SC8050 type silicon transistor selected by described audion (3).
7. the holder for dissipating heat of laptop computer circuit of a kind of intelligent speed-regulating according to claim 1, it is characterised in that described operational amplifier (2) selects CF741CT type integrated operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087879.4U CN205281389U (en) | 2015-12-23 | 2015-12-23 | Notebook computer heat dissipation base circuit of intelligence speed governing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087879.4U CN205281389U (en) | 2015-12-23 | 2015-12-23 | Notebook computer heat dissipation base circuit of intelligence speed governing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205281389U true CN205281389U (en) | 2016-06-01 |
Family
ID=56065946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521087879.4U Expired - Fee Related CN205281389U (en) | 2015-12-23 | 2015-12-23 | Notebook computer heat dissipation base circuit of intelligence speed governing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205281389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596744A (en) * | 2019-12-11 | 2020-08-28 | 北京科纬科技有限公司 | Intelligent control computer |
-
2015
- 2015-12-23 CN CN201521087879.4U patent/CN205281389U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596744A (en) * | 2019-12-11 | 2020-08-28 | 北京科纬科技有限公司 | Intelligent control computer |
| CN111596744B (en) * | 2019-12-11 | 2022-07-19 | 成都凌亚科技有限公司 | Intelligent control computer |
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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: 20160601 Termination date: 20161223 |