CN208908354U - A kind of fan power supply protection circuit - Google Patents
A kind of fan power supply protection circuit Download PDFInfo
- Publication number
- CN208908354U CN208908354U CN201821824208.5U CN201821824208U CN208908354U CN 208908354 U CN208908354 U CN 208908354U CN 201821824208 U CN201821824208 U CN 201821824208U CN 208908354 U CN208908354 U CN 208908354U
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- China
- Prior art keywords
- overcurrent protection
- voltage
- protection chip
- unit
- connect
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- Expired - Fee Related
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- 239000003990 capacitor Substances 0.000 claims description 26
- 239000003381 stabilizer Substances 0.000 claims description 25
- 230000005669 field effect Effects 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007717 exclusion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of fan power supplies to protect circuit; including overcurrent protection chip start unit, overcurrent protection chip unit and fan connector unit; the state instruction end in place of the fan connector is connect with the input terminal of overcurrent protection chip start unit; the output end of overcurrent protection chip start unit is connect with the control terminal of overcurrent protection chip unit; the voltage input end external world 12V voltage of overcurrent protection chip unit, the voltage output end of overcurrent protection chip unit are connect with the power end of fan connector unit.It can reduce because fault caused by power protection chip is done, leads to the function for the requirement for not meeting client, or reduce design mistake and need rework additional cost payment.
Description
Technical field
The utility model relates to fan power supply design field, especially a kind of fan power supply protects circuit.
Background technique
Fan usually can all put a power protection chip in design before blower module, avoid fan damage by short-circuit electricity
It flows back to and fills plank end, cause other elements on plank also to damage together, but some power protection chips are no troubleshootings
The function of just sending a telegram in reply afterwards.
Utility model content
The purpose of the utility model is to provide a kind of fan power supplies to protect circuit, in order to which power protection chip to be avoided is that do not have
The function of just sending a telegram in reply after faulty exclusion adds set of circuits in power protection chip, after replacing fan, so that it may by chip
Restarting, allows fan to send a telegram in reply again.
To achieve the above object, the utility model adopts the following technical solutions:
The utility model provides a kind of fan power supply protection circuit, including overcurrent protection chip start unit, overcurrent are protected
Chip unit and fan connector unit are protected, the state instruction end in place of the fan connector and the starting of overcurrent protection chip are single
The input terminal connection of member, the output end of overcurrent protection chip start unit are connect with the control terminal of overcurrent protection chip unit, mistake
The voltage input end external world 12V voltage of stream protection chip unit, the voltage output end of overcurrent protection chip unit are connect with fan
The power end of device unit connects.
Further, the overcurrent protection chip start unit include field-effect tube T1 and voltage-stabiliser tube D1, voltage-stabiliser tube D2 and
Voltage-stabiliser tube D3, the grid of the field-effect tube T1 are connect with the state end in place of the anode of voltage-stabiliser tube D1, fan connector respectively；
The source electrode of field-effect tube T1 is connect with the anode of the anode of voltage-stabiliser tube D2, voltage-stabiliser tube D3 respectively, cathode, the voltage-stabiliser tube of voltage-stabiliser tube D1
The cathode of D2 connects, and the cathode of voltage-stabiliser tube D3 is connect with the drain electrode of field-effect tube T1；The drain electrode external world of field-effect tube T1 pulls up electricity
R194 is hindered, is also connect with the control terminal of over-current signal chip unit.
Further, overcurrent protection chip unit includes overcurrent protection chip U55, and the overcurrent protection chip U55's makes
Energy end is connect with the output end of overcurrent protection chip start unit, the first Input voltage terminal and second of overcurrent protection chip U55
External world's 12V voltage, the output end of overcurrent protection chip U55 and the power end of fan connector unit connect Input voltage terminal respectively
It connects, is grounded after capacitor C51.
Further, the fan connector unit includes voltage input circuit and fan connector chip J1, the wind
The power end of sash connector chip J1 and the output end of voltage input circuit connect, and the input terminal and overcurrent of voltage input circuit are protected
The voltage output end connection of chip unit is protected, the signal designation end in place of fan connector chip J1 and overcurrent protection chip start
The input terminal of unit connects；Voltage input circuit include the inductance L1 and capacitor C1 being successively connected in parallel, capacitor C2, capacitor C3 and
Capacitor C108, the one end inductance L1 are connect with the voltage output end of overcurrent protection chip unit, the other end and capacitor C1, capacitor C2,
It is connect after capacitor C3 and capacitor C108 connection with the power end of fan connector chip.
The effect provided in utility model content is only the effect of embodiment, rather than whole effects that utility model is all
Fruit, a technical solution in above-mentioned technical proposal have the following advantages that or the utility model has the advantages that
The utility model is determined whether to be inserted into fan by the foot position in place of fan connector, then by the signal in place of fan
It is connected to the starting foot position with power protection chip, as long as fan has done Plug Action i.e. signal in place can be because fan be extracted
Can be at low level after being inserted into high level, power protection chip also can start or close therewith, can thus ignore
The function of sending a telegram in reply after the whether faulty exclusion of power protection chip.It can reduce because of fault caused by power protection chip is done,
Lead to the function for the requirement for not meeting client, or reduces design mistake and need rework additional cost payment.
Detailed description of the invention
Fig. 1 is the utility model fan power supply protection circuit theory schematic diagram；
Fig. 2 is overcurrent protection chip start unit circuit diagram；
Fig. 3 is overcurrent protection chip unit circuit diagram；
Fig. 4 is fan connector element circuit schematic diagram.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with novel.Following disclosure provides many different embodiments or example is used to realize the utility model
Different structure.In order to simplify the disclosure of the utility model, hereinafter the component of specific examples and setting are described.In addition,
The utility model can in different examples repeat reference numerals and/or letter.This repetition is for simplified and clear mesh
, the relationship between discussed various embodiments and/or setting itself is not indicated.It should be noted that illustrated in the accompanying drawings
Component is not drawn necessarily to scale.The description to known assemblies and treatment technology and process is omitted to avoid not in the utility model
Necessarily limit the utility model.
As shown in Figure 1, a kind of fan power supply protects circuit, including overcurrent protection chip start unit, overcurrent protection chip
Unit and fan connector unit, the state instruction end in place of the fan connector are defeated with overcurrent protection chip start unit
Enter end connection, the output end of overcurrent protection chip start unit is connect with the control terminal of overcurrent protection chip unit, overcurrent protection
The voltage input end external world 12V voltage of chip unit, the voltage output end and fan connector unit of overcurrent protection chip unit
Power end connection.
As shown in Fig. 2, overcurrent protection chip start unit includes field-effect tube T1 and voltage-stabiliser tube D1, voltage-stabiliser tube D2 and pressure stabilizing
Pipe D3, the grid of the field-effect tube T1 are connect with the state end in place of the anode of voltage-stabiliser tube D1, fan connector respectively；Field effect
Should the source electrode of pipe T1 connect respectively with the anode of the anode of voltage-stabiliser tube D2, voltage-stabiliser tube D3, the cathode of voltage-stabiliser tube D1, voltage-stabiliser tube D2
Cathode connection, the cathode of voltage-stabiliser tube D3 are connect with the drain electrode of field-effect tube T1；The drain electrode external world pull-up resistor of field-effect tube T1
R194 is also connect with the control terminal of over-current signal chip unit.
As shown in figure 3, overcurrent protection chip unit includes overcurrent protection chip U55, the overcurrent protection chip U55's makes
Energy end is connect with the output end of overcurrent protection chip start unit, the first Input voltage terminal and second of overcurrent protection chip U55
External world's 12V voltage, the output end of overcurrent protection chip U55 and the power end of fan connector unit connect Input voltage terminal respectively
It connects, is grounded after capacitor C51.
As shown in figure 4, fan connector unit includes voltage input circuit and fan connector chip J1, the fan connects
The output end of the power end and voltage input circuit that meet device chip J1 connects, the input terminal and overcurrent protection core of voltage input circuit
The voltage output end of blade unit connects, the signal designation end in place of fan connector chip J1 and overcurrent protection chip start unit
Input terminal connection；Voltage input circuit includes inductance L1 and the capacitor C1 being successively connected in parallel, capacitor C2, capacitor C3 and capacitor
C108, the one end inductance L1 are connect with the voltage output end of overcurrent protection chip unit, the other end and capacitor C1, capacitor C2, capacitor
It is connect after C3 and capacitor C108 connection with the power end of fan connector chip.
Determine whether to be inserted into fan by the foot position in place of fan connector, then the signal in place of fan is connected to and power supply
The starting foot position of chip is protected, as long as fan has done Plug Action i.e. signal in place can be because fan be extracted into high level
Can be at low level after being inserted into, power protection chip also can start or close therewith, can thus ignore power protection core
The function of sending a telegram in reply after the whether faulty exclusion of piece.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (4)
1. a kind of fan power supply protects circuit, characterized in that including overcurrent protection chip start unit, overcurrent protection chip unit
With fan connector unit, the state instruction end in place of the fan connector and the input terminal of overcurrent protection chip start unit
Connection, the output end of overcurrent protection chip start unit are connect with the control terminal of overcurrent protection chip unit, overcurrent protection chip
The voltage input end external world 12V voltage of unit, the voltage output end of overcurrent protection chip unit and the electricity of fan connector unit
Source connection.
2. circuit as described in claim 1, characterized in that the overcurrent protection chip start unit include field-effect tube T1 and
Voltage-stabiliser tube D1, voltage-stabiliser tube D2 and voltage-stabiliser tube D3, the grid of the field-effect tube T1 are connect with the anode of voltage-stabiliser tube D1, fan respectively
The state end in place of device connects；The source electrode of field-effect tube T1 is connect with the anode of the anode of voltage-stabiliser tube D2, voltage-stabiliser tube D3 respectively, surely
The cathode connection of the cathode, voltage-stabiliser tube D2 of pressure pipe D1, the cathode of voltage-stabiliser tube D3 are connect with the drain electrode of field-effect tube T1；Field-effect tube
The drain electrode external world pull-up resistor R194 of T1, also connect with the control terminal of over-current signal chip unit.
3. circuit as described in claim 1, characterized in that overcurrent protection chip unit includes overcurrent protection chip U55, described
The enable end of overcurrent protection chip U55 is connect with the output end of overcurrent protection chip start unit, and the of overcurrent protection chip U55
External world's 12V voltage, the output end of overcurrent protection chip U55 are connect with fan respectively for one Input voltage terminal and the second Input voltage terminal
The power end of device unit connects, and is grounded after capacitor C51.
4. circuit as described in claim 1, characterized in that the fan connector unit includes voltage input circuit and fan
The power end of connector chip J1, the fan connector chip J1 and the output end of voltage input circuit connect, voltage input
The input terminal of circuit is connect with the voltage output end of overcurrent protection chip unit, the signal designation in place of fan connector chip J1
End is connect with the input terminal of overcurrent protection chip start unit；Voltage input circuit includes inductance L1 and the electricity that is successively connected in parallel
Hold C1, capacitor C2, capacitor C3 and capacitor C108, the one end inductance L1 to connect with the voltage output end of overcurrent protection chip unit, separately
One end is connect after connecting with capacitor C1, capacitor C2, capacitor C3 and capacitor C108 with the power end of fan connector chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821824208.5U CN208908354U (en) | 2018-11-07 | 2018-11-07 | A kind of fan power supply protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821824208.5U CN208908354U (en) | 2018-11-07 | 2018-11-07 | A kind of fan power supply protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208908354U true CN208908354U (en) | 2019-05-28 |
Family
ID=66614715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821824208.5U Expired - Fee Related CN208908354U (en) | 2018-11-07 | 2018-11-07 | A kind of fan power supply protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208908354U (en) |
-
2018
- 2018-11-07 CN CN201821824208.5U patent/CN208908354U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190528 |