CN204990174U - Computer radiator control circuit - Google Patents
Computer radiator control circuit Download PDFInfo
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- CN204990174U CN204990174U CN201520807096.2U CN201520807096U CN204990174U CN 204990174 U CN204990174 U CN 204990174U CN 201520807096 U CN201520807096 U CN 201520807096U CN 204990174 U CN204990174 U CN 204990174U
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- triode
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Abstract
The utility model discloses a computer radiator control circuit, including chip U1, resistance R1, thermistor RV, motor M, electric capacity C1 and triode Q1, grounded capacitance C1, chip U1 pin 8, thermistor RV, power VCC1 and resistance R3 are connected respectively to resistance R1 one end, and the resistance R1 other end is connecting resistance R2, electric capacity C2, the thermistor RV other end and chip U1 pin 1, electric capacity C2 other end connecting resistance R2 and ground connection respectively, grounded capacitance C3, chip U1 pin 3, resistance R4 and triode Q2 collecting electrode are connected respectively to the resistance R3 other end, and triode Q2 base is passed through resistance R5 and is connected signal vi, and triode Q2 projecting pole is the connecting resistance R4 other end and electric capacity C4 and ground connection respectively, and electric capacity C4 other end connection chip U1 pin 2. The utility model discloses computer radiator control circuit adopts TC642 control, and circuit structure is simple, and is with low costs, small, and the security is high, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of computer radiator control circuit.
Background technology
Mention the fan of CPU, be exactly utilize them fast by the heat conduction of CPU out and blow in neighbouring air and go in fact, the quality of cooling-down effect is directly relevant with the quality of CPU radiator fan, heat radiator.
Hardware facility on notebook has a lot; it is a unremarkable equipment that radiator fan seems; but be but absolutely necessary for notebook, once notebook fan breaks down, the operation that notebook just cannot be smooth; so for the protection of notebook fan; very necessary, more existing radiating fan for computer protectors only adopt mu balanced circuit as protection circuit mostly, and security is lower; and circuit structure is comparatively complicated, volume is large.
Utility model content
The purpose of this utility model is to provide a kind of computer radiator control circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of computer radiator control circuit, comprises chip U1, resistance R1, thermistor RV, motor M, electric capacity C1 and triode Q1, described resistance R1 one end connects direct earth capacitance C1 respectively, chip U1 pin 8, thermistor RV, power supply VCC1 and resistance R3, the resistance R1 other end is contact resistance R2 respectively, electric capacity C2, the thermistor RV other end and chip U1 pin 1, electric capacity C2 other end contact resistance R2 ground connection, the described resistance R3 other end connects direct earth capacitance C3 respectively, chip U1 pin 3, resistance R4 and triode Q2 collector, triode Q2 base stage is by resistance R5 connection signal Vi, the triode Q2 emitter respectively contact resistance R4 other end and electric capacity C4 ground connection, the electric capacity C4 other end connects chip U1 pin 2, chip U1 pin 6 is contact resistance R6 and triode Q1 base stage respectively, triode Q1 collector connects power supply VCC2 by motor M, the resistance R6 other end connects chip U1 pin 7, triode Q1 emitter connects electric capacity C5 and resistance R7 respectively, the resistance R7 other end connects chip U1 pin 4, chip U1 pin 5 connects the electric capacity C5 other end, and chip U1 adopts TC642.
As further program of the utility model: described power supply VCC1 voltage is 5V.
As the utility model further scheme: described power supply VCC2 voltage is 12V.
Compared with prior art, the beneficial effects of the utility model are: the utility model computer radiator control circuit adopts TC642 to control, and circuit structure is simple, and cost is low, and volume is little, and security is high, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of computer radiator control circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of computer radiator control circuit, comprise chip U1, resistance R1, thermistor RV, motor M, electric capacity C1 and triode Q1, described resistance R1 one end connects direct earth capacitance C1 respectively, chip U1 pin 8, thermistor RV, power supply VCC1 and resistance R3, the resistance R1 other end is contact resistance R2 respectively, electric capacity C2, the thermistor RV other end and chip U1 pin 1, electric capacity C2 other end contact resistance R2 ground connection, the described resistance R3 other end connects direct earth capacitance C3 respectively, chip U1 pin 3, resistance R4 and triode Q2 collector, triode Q2 base stage is by resistance R5 connection signal Vi, the triode Q2 emitter respectively contact resistance R4 other end and electric capacity C4 ground connection, the electric capacity C4 other end connects chip U1 pin 2, chip U1 pin 6 is contact resistance R6 and triode Q1 base stage respectively, triode Q1 collector connects power supply VCC2 by motor M, the resistance R6 other end connects chip U1 pin 7, triode Q1 emitter connects electric capacity C5 and resistance R7 respectively, the resistance R7 other end connects chip U1 pin 4, chip U1 pin 5 connects the electric capacity C5 other end, chip U1 adopts TC642.
Power supply VCC1 voltage is 5V.
Power supply VCC2 voltage is 12V.
Principle of work of the present utility model is: refer to Fig. 1, by connecting a thermistor RV at chip U1 pin 1 input pin, can provide the control voltage of required 1.25V to 2.65V typical electric machine M, and the PWM dutycycle of 0% to 100%.The minimum speed of motor M can be set by the simple resistor voltage divider of chip U1 pin 3 input end.Powering on, shutdown mode being when recovering and restart after transient fault, and startup timer integrated in chip U1 can guarantee that motor M reliably starts.Applying a logic low Vi at chip U1 pin 3 can make motor M enter shutdown mode.
Have employed the FanSenseTM patented technology of MicrochipTechnology in TC642, improve system reliability.When motor M is normally run, pulse missing detecting device monitors the pulse train on chip U1 pin 5, motor M stall, open circuit or disconnecting time, TC642 will be made to trigger one-shot timer, if fault sustainable existence, chip U1 pin 6 output pin will become low level, Q1 is then locked in shutdown mode, and when PWM output duty cycle reaches 100%, chip U1 pin 6 output pin is also by output low level, show to occur thermal runaway phenomenon, now motor M still continues to run.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a computer radiator control circuit, comprise chip U1, resistance R1, thermistor RV, motor M, electric capacity C1 and triode Q1, it is characterized in that, described resistance R1 one end connects direct earth capacitance C1 respectively, chip U1 pin 8, thermistor RV, power supply VCC1 and resistance R3, the resistance R1 other end is contact resistance R2 respectively, electric capacity C2, the thermistor RV other end and chip U1 pin 1, electric capacity C2 other end contact resistance R2 ground connection, the described resistance R3 other end connects direct earth capacitance C3 respectively, chip U1 pin 3, resistance R4 and triode Q2 collector, triode Q2 base stage is by resistance R5 connection signal Vi, the triode Q2 emitter respectively contact resistance R4 other end and electric capacity C4 ground connection, the electric capacity C4 other end connects chip U1 pin 2, chip U1 pin 6 is contact resistance R6 and triode Q1 base stage respectively, triode Q1 collector connects power supply VCC2 by motor M, the resistance R6 other end connects chip U1 pin 7, triode Q1 emitter connects electric capacity C5 and resistance R7 respectively, the resistance R7 other end connects chip U1 pin 4, chip U1 pin 5 connects the electric capacity C5 other end, chip U1 adopts TC642.
2. computer radiator control circuit according to claim 1, is characterized in that, described power supply VCC1 voltage is 5V.
3. computer radiator control circuit according to claim 1, is characterized in that, described power supply VCC2 voltage is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807096.2U CN204990174U (en) | 2015-10-19 | 2015-10-19 | Computer radiator control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520807096.2U CN204990174U (en) | 2015-10-19 | 2015-10-19 | Computer radiator control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204990174U true CN204990174U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520807096.2U Expired - Fee Related CN204990174U (en) | 2015-10-19 | 2015-10-19 | Computer radiator control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204990174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153228A (en) * | 2016-07-25 | 2016-11-23 | 四川诚邦浩然测控技术有限公司 | A kind of new forms of energy electric machine combination property test system |
-
2015
- 2015-10-19 CN CN201520807096.2U patent/CN204990174U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153228A (en) * | 2016-07-25 | 2016-11-23 | 四川诚邦浩然测控技术有限公司 | A kind of new forms of energy electric machine combination property test system |
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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: 20160120 Termination date: 20161019 |