CN207117157U - A kind of overvoltage crowbar for computer radiating fan - Google Patents
A kind of overvoltage crowbar for computer radiating fan Download PDFInfo
- Publication number
- CN207117157U CN207117157U CN201720894681.XU CN201720894681U CN207117157U CN 207117157 U CN207117157 U CN 207117157U CN 201720894681 U CN201720894681 U CN 201720894681U CN 207117157 U CN207117157 U CN 207117157U
- Authority
- CN
- China
- Prior art keywords
- fan
- power supply
- negative pole
- computer radiating
- relay
- 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 kind of overvoltage crowbar for computer radiating fan, the positive pole of fan power supply is in series with switch S1, switch the S1 positive poles with light emitting diode D1 respectively, one end of relay J1 coils, protection diode D2 negative pole is connected, light emitting diode D1 negative pole is also connected by resistance R2 with transistor T1 base stage, light emitting diode D1 is just, electric capacity C1 is parallel between negative pole, the transistor T1 colelctor electrode other end with relay J1 coils respectively, protection diode D2 positive pole is connected, transistor T1 emitter stage is connected with the negative pole of fan power supply, protection diode D2 negative pole is also in series with relay J1 normally closed interlock, relay J1 normally closed interlock, computer radiating fan M is parallel between fan power supply negative pole.The utility model circuit is simple, and cost is cheap, has a good application prospect.
Description
Technical field
A kind of overvoltage crowbar for computer radiating fan is the utility model is related to, belongs to electronic circuit technology neck
Domain.
Background technology
For computer radiating fan, rated voltage be present, but in practice, it is impossible to the work under rated voltage is completely secured
Make, be a scope near rated voltage, typically require ± 15%.It is exactly " overvoltage " when the voltage higher than+15%, needs
User is reminded quickly to cut off computer radiating fan power supply, otherwise, long-term overvoltage power supply can be to the electricity in computer radiating fan
Sub- component, especially motor cause to damage.But at present, computer radiating fan control circuit on the market, do not provide also
Simply, reliable overvoltage crowbar, to be protected to computer radiating fan, the automatic of computer radiating fan how is realized
Overvoltage protection, it is to be currently needed for solving the problems, such as.
Utility model content
The purpose of this utility model is that to overcome be existing computer radiating fan control circuit, is not provided simple, reliable
Overvoltage crowbar, the problem of to be protected to computer radiating fan.It is of the present utility model to be used for computer radiating fan
Overvoltage crowbar, control relay can be passed through in the fan power supply overtension to computer radiating fan
Current supply circuit is disconnected, realizes the protection to computer radiating fan, circuit is simple, and cost is cheap, has a good application prospect.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of overvoltage crowbar for computer radiating fan, it is characterised in that：Including fan power supply, switch
S1, relay J1, transistor T1, light emitting diode D1, protection diode D2, positive pole and the switch S1 of the fan power supply
Be in series, the switch S1 respectively the positive pole with light emitting diode D1, one end of relay J1 coils, protection diode D2 it is negative
Pole is connected, and the negative pole of the light emitting diode D1 is connected by resistance R1 with the negative pole of fan power supply, described luminous
Diode D1 negative pole is also connected by resistance R2 with transistor T1 base stage, between the light emitting diode D1 positive and negative electrodes
Being parallel with electric capacity C1, transistor T1 colelctor electrode, the other end with relay J1 coils, protection diode D2 be just respectively
Pole is connected, and the emitter stage of the transistor T1 is connected with the negative pole of fan power supply, and the protection diode D2's is negative
Pole is also in series with relay J1 normally closed interlock, in parallel between the normally closed interlock of the relay J1, fan power supply negative pole
There is computer radiating fan M.
It is previously described for the overvoltage crowbar of computer radiating fan, it is characterised in that：The electricity of the fan power supply
Press and be connected for 5V, the fan power supply by voltage conversion circuit with computer main power source.
It is previously described for the overvoltage crowbar of computer radiating fan, it is characterised in that：The fan power supply just,
Parallel connection is filter capacitor C2 between negative pole.
It is previously described for the overvoltage crowbar of computer radiating fan, it is characterised in that：The transistor T is that NPN type is brilliant
Body pipe.
It is previously described for the overvoltage crowbar of computer radiating fan, it is characterised in that：The capacitance of the electric capacity C1 is
Between 0.01 μ F-0.1 μ F.
It is previously described for the overvoltage crowbar of computer radiating fan, it is characterised in that：The light emitting diode D1 is red
Color light emitting diode.
The beneficial effects of the utility model are：Overvoltage crowbar of the present utility model for computer radiating fan, energy
Enough in the fan power supply overtension to computer radiating fan, pass through the disconnection current supply circuit of control relay, realize
Protection to computer radiating fan, circuit is simple, and cost is cheap, has a good application prospect.
Brief description of the drawings
Fig. 1 is the circuit diagram of the overvoltage crowbar of the present utility model for computer radiating fan.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.Following examples are only used for more clear
Illustrate to Chu the technical solution of the utility model, and the scope of protection of the utility model can not be limited with this.
As shown in figure 1, the overvoltage crowbar of the present utility model for computer radiating fan, including fan power supply electricity
Source, switch S1, relay J1, transistor T1, light emitting diode D1, protection diode D2, the positive pole of the fan power supply
With switch S1 be in series, the switch S1 respectively the positive pole with light emitting diode D1, relay J1 coils one end, protect two poles
Pipe D2 negative pole is connected, and the negative pole of the light emitting diode D1 is connected by resistance R1 with the negative pole of fan power supply,
The negative pole of the light emitting diode D1 is also connected by resistance R2 with transistor T1 base stage, the light emitting diode D1 just,
Electric capacity C1, the transistor T1 colelctor electrode other end with relay J1 coils, two poles of protection respectively are parallel between negative pole
Pipe D2 positive pole is connected, and the emitter stage of the transistor T1 is connected with the negative pole of fan power supply, two poles of the protection
Pipe D2 negative pole is also in series with relay J1 normally closed interlock, normally closed interlock, the fan power supply negative pole of the relay J1
Between be parallel with computer radiating fan M.
Preferably, the voltage of the fan power supply is 5V, and fan power supply passes through voltage conversion circuit and computer
Main power source is connected, when supplying the voltage of fan power supply more than 5V, even up to 8V, it is of the present utility model to be used for electricity
The overvoltage crowbar work of brain radiator fan, cut off the power supply to computer radiating fan M, protection computer radiating fan M.
Preferably, parallel connection is filter capacitor C2 between the positive and negative electrode of the fan power supply, ensures the steady of power supply supply
Fixed, reliability.
Preferably, the transistor T is NPN transistor.
Preferably, the capacitance of the electric capacity C1 is between 0.01 μ F-0.1 μ F, the electric capacity C1 in parallel with light emitting diode D1
The purpose of electromagnetism interference can be reached.
Preferably, the light emitting diode D1 is red light emitting diodes, and alarm is eye-catching.
Overvoltage crowbar of the present utility model for computer radiating fan, operation principle are as follows：When fan power supply electricity
Source not less than setting voltage when, light emitting diode D1 cut-off, because being also switched off without base current, relay J1 does not inhale transistor T1
Close, its relay J1 normally closed interlock closure, to being parallel with computer radiating fan M normal power supplies；When fan power supply once
During more than setting voltage, light emitting diode D1 is glowed by ending for conducting, light emitting diode D1, represents electric voltage over press, is reminded
User detects circuit, and it flows through the base current that light emitting diode D1 electric current is supplied to transistor T1, and transistor T1 is turned on, after
Electrical equipment J1 adhesives, its relay J1 normally closed interlock disconnect, and cut-out computer radiating fan M power supply, play a protective role, when with
After family detection oversampling circuit, by lower switch S1, you can normal work.
In summary, the overvoltage crowbar of the present utility model for computer radiating fan, conjunction with semiconductors radio
Using, when search coil runs into the small metal object of underground, the sound frequency of the loudspeaker of transistor radio can uprise,
Remind user to find small metal object, can fast searching to small metal object, securely and reliably, low in energy consumption, circuit is simple, and cost is low
It is honest and clean, have a good application prospect.
General principle of the present utility model, main features and advantages have been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification is originally
The principle of utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change
And improvement, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model requires protection scope
By appended claims and its equivalent thereof.
Claims (6)
- A kind of 1. overvoltage crowbar for computer radiating fan, it is characterised in that：Including fan power supply, switch S1, Relay J1, transistor T1, light emitting diode D1, protection diode D2, the positive pole of the fan power supply is with switching S1 phases Series connection, the switch S1 positive pole with light emitting diode D1, one end of relay J1 coils, protection diode D2 negative pole respectively It is connected, the negative pole of the light emitting diode D1 is connected by resistance R1 with the negative pole of fan power supply, and described luminous two Pole pipe D1 negative pole is also connected by resistance R2 with transistor T1 base stage, between the light emitting diode D1 positive and negative electrodes simultaneously It is associated with electric capacity C1, the transistor T1 colelctor electrode other end with relay J1 coils, protection diode D2 respectively positive pole It is connected, the emitter stage of the transistor T1 is connected with the negative pole of fan power supply, the negative pole of the protection diode D2 Also it is in series with relay J1 normally closed interlock, is parallel between the normally closed interlock of the relay J1, fan power supply negative pole Computer radiating fan M.
- 2. the overvoltage crowbar according to claim 1 for computer radiating fan, it is characterised in that：The fan supplies The voltage of power supply is 5V, and the fan power supply is connected by voltage conversion circuit with computer main power source.
- 3. the overvoltage crowbar according to claim 2 for computer radiating fan, it is characterised in that：The fan supplies Parallel connection is filter capacitor C2 between the positive and negative electrode of power supply.
- 4. the overvoltage crowbar according to claim 1 for computer radiating fan, it is characterised in that：The transistor T is NPN transistor.
- 5. the overvoltage crowbar according to claim 1 for computer radiating fan, it is characterised in that：The electric capacity C1 Capacitance between 0.01 μ F-0.1 μ F.
- 6. the overvoltage crowbar according to claim 1 for computer radiating fan, it is characterised in that：Described luminous two Pole pipe D1 is red light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720894681.XU CN207117157U (en) | 2017-07-23 | 2017-07-23 | A kind of overvoltage crowbar for computer radiating fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720894681.XU CN207117157U (en) | 2017-07-23 | 2017-07-23 | A kind of overvoltage crowbar for computer radiating fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207117157U true CN207117157U (en) | 2018-03-16 |
Family
ID=61573545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720894681.XU Expired - Fee Related CN207117157U (en) | 2017-07-23 | 2017-07-23 | A kind of overvoltage crowbar for computer radiating fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207117157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276022A (en) * | 2017-07-23 | 2017-10-20 | 苏州中蟹网电子商务有限公司 | A kind of overvoltage crowbar for computer radiating fan |
-
2017
- 2017-07-23 CN CN201720894681.XU patent/CN207117157U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276022A (en) * | 2017-07-23 | 2017-10-20 | 苏州中蟹网电子商务有限公司 | A kind of overvoltage crowbar for computer radiating fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191218 Address after: 215000 No.2, Taishan Road, high tech Zone, Suzhou City, Jiangsu Province (324, building 10, Boji science and Technology Pioneer Park) Patentee after: Suzhou Hexinmei Electronic Technology Co., Ltd. Address before: 323913 Qiankeng 23, Pingta Village, Zhangcun Township, Qingtian County, Lishui City, Zhejiang Province Patentee before: Luo Bijun |
|
| 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: 20180316 Termination date: 20200723 |