CN203232266U - Fan control circuit based on linear regulator - Google Patents
Fan control circuit based on linear regulator Download PDFInfo
- Publication number
- CN203232266U CN203232266U CN 201320203940 CN201320203940U CN203232266U CN 203232266 U CN203232266 U CN 203232266U CN 201320203940 CN201320203940 CN 201320203940 CN 201320203940 U CN201320203940 U CN 201320203940U CN 203232266 U CN203232266 U CN 203232266U
- Authority
- CN
- China
- Prior art keywords
- resistor
- capacitor
- linear regulator
- fan
- cathode output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a fan control circuit based on a linear regulator. The circuit comprises a direct current power supply, a first linear regulator, a second linear regulator, a CPU, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor and a fan. The computer fan monitoring circuit provided the utility model can prevent a computer motherboard from being burned out due to heating, and has the advantages of simple circuit structure, stable performance and convenient installation and debugging.
Description
Technical field
The utility model relates to a kind of fan control circuitry, relates in particular to a kind of fan control circuitry based on linear regulator.
Background technology
Along with the raising of people's living standard, computing machine has been applied in all trades and professions, and owing to start for a long time, the computer fan heat radiation was lost efficacy, and the mainboard of computing machine generates heat, thereby burns out the circuit board of collector, is unfavorable for the production efficiency of all trades and professions.
The utility model content
The purpose of this utility model provides a kind of fan control circuitry based on linear regulator with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises direct supply, first linear regulator, second linear regulator, CPU, first capacitor, second capacitor, the 3rd capacitor, the 4th capacitor, first resistor, second resistor, the 3rd resistor, the 4th resistor and fan, the cathode output end of described direct supply is connected with first end of described second capacitor and the electrode input end of described second linear regulator respectively, the output terminal of described second linear regulator respectively with first end of described first resistor, first end of the electrode input end of described fan and described the 4th capacitor is connected, the negative input of described second linear regulator respectively with first end of described second resistor, first end of described the 3rd capacitor is connected with second end of described first resistor, second end of described second resistor is connected with the adjustable side of described first linear regulator and first end of described the 3rd resistor respectively, the electrode input end of described first linear regulator is connected with first end of described first capacitor and the cathode output end of described direct supply respectively, the cathode output end of described first linear regulator is connected with the electrode input end of described CPU, the cathode output end of described first linear regulator is connected with the negative input of described CPU, the signal output part of described first linear regulator is connected the negative input of described first linear regulator with first end of described the 4th resistor and the signal input part of described fan respectively, the negative input of described fan, second end of described first capacitor, second end of described second capacitor, second end of described the 3rd resistor, second end of described the 3rd capacitor, second end of described the 4th capacitor all is connected with the cathode output end of described direct supply with second end of described the 4th resistor.
The beneficial effects of the utility model are:
The utility model provides a kind of computer fan observation circuit, can prevent that computing machine from burning out the mainboard of computing machine owing to heating; The utlity model has that circuit structure is simple, stable performance and Installation and Debugging advantage easily.
Description of drawings
Fig. 1 is the circuit diagram of the fan control circuitry based on linear regulator described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model comprises direct supply, the first linear regulator U1, the second linear regulator U2, CPU, the first capacitor C1, the second capacitor C2, the 3rd capacitor C3, the 4th capacitor C4, the first resistor R1, the second resistor R2, the 3rd resistor R3, the 4th resistor R4 and fan, the cathode output end of direct supply is connected with first end of the second capacitor C2 and the electrode input end of the second linear regulator U2 respectively, the output terminal of the second linear regulator U2 respectively with first end of the first resistor R1, the electrode input end of fan is connected with first end of the 4th capacitor C4, the negative input of the second linear regulator U2 respectively with first end of the second resistor R2, first end of the 3rd capacitor C3 is connected with second end of the first resistor R1, second end of the second resistor R2 is connected with the adjustable side of the first linear regulator U1 and first end of the 3rd resistor R3 respectively, the electrode input end of the first linear regulator U1 is connected with first end of the first capacitor C1 and the cathode output end of direct supply respectively, the cathode output end of the first linear regulator U1 is connected with the electrode input end of CPU, the cathode output end of the first linear regulator U1 is connected with the negative input of CPU, the signal output part of the first linear regulator U1 is connected the negative input of the first linear regulator U1 with first end of the 4th resistor R4 and the signal input part of fan respectively, the negative input of fan, second end of the first capacitor C1, second end of the second capacitor C2, second end of the 3rd resistor R3, the 3rd capacitor C3 second end, second end of second end of the 4th capacitor C4 and the 4th resistor R4 all is connected with the cathode output end of direct supply.
Claims (1)
1. fan control circuitry based on linear regulator, it is characterized in that: comprise direct supply, first linear regulator, second linear regulator, CPU, first capacitor, second capacitor, the 3rd capacitor, the 4th capacitor, first resistor, second resistor, the 3rd resistor, the 4th resistor and fan, the cathode output end of described direct supply is connected with first end of described second capacitor and the electrode input end of described second linear regulator respectively, the output terminal of described second linear regulator respectively with first end of described first resistor, first end of the electrode input end of described fan and described the 4th capacitor is connected, the negative input of described second linear regulator respectively with first end of described second resistor, first end of described the 3rd capacitor is connected with second end of described first resistor, second end of described second resistor is connected with the adjustable side of described first linear regulator and first end of described the 3rd resistor respectively, the electrode input end of described first linear regulator is connected with first end of described first capacitor and the cathode output end of described direct supply respectively, the cathode output end of described first linear regulator is connected with the electrode input end of described CPU, the cathode output end of described first linear regulator is connected with the negative input of described CPU, the signal output part of described first linear regulator is connected the negative input of described first linear regulator with first end of described the 4th resistor and the signal input part of described fan respectively, the negative input of described fan, second end of described first capacitor, second end of described second capacitor, second end of described the 3rd resistor, second end of described the 3rd capacitor, second end of described the 4th capacitor all is connected with the cathode output end of described direct supply with second end of described the 4th resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320203940 CN203232266U (en) | 2013-04-22 | 2013-04-22 | Fan control circuit based on linear regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320203940 CN203232266U (en) | 2013-04-22 | 2013-04-22 | Fan control circuit based on linear regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232266U true CN203232266U (en) | 2013-10-09 |
Family
ID=49288379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320203940 Expired - Fee Related CN203232266U (en) | 2013-04-22 | 2013-04-22 | Fan control circuit based on linear regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232266U (en) |
-
2013
- 2013-04-22 CN CN 201320203940 patent/CN203232266U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140422 |