CN207601795U - There is the computer of power-failure protecting - Google Patents
There is the computer of power-failure protecting Download PDFInfo
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- CN207601795U CN207601795U CN201721845577.8U CN201721845577U CN207601795U CN 207601795 U CN207601795 U CN 207601795U CN 201721845577 U CN201721845577 U CN 201721845577U CN 207601795 U CN207601795 U CN 207601795U
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Abstract
There is the computer of power-failure protecting the utility model discloses a kind of, including shell, circuit main board is equipped in the shell, the circuit main board is equipped with power failure protection circuit, the power failure protection circuit includes key switch, first resistor, second resistance, 3rd resistor, 4th resistance, first triode, second triode, third transistor, first capacitance, second capacitance, third capacitance, first zener diode, second Current Limiting Diodes and computer power supply, one end of key switch one end with the 3rd resistor respectively, the emitter of third transistor, the cathode of the collector of first triode and the second Current Limiting Diodes connects, the other end of the key switch is connect by the one end of the first resistor respectively with one end of the second resistance and the 4th resistance, the other end ground connection of the second resistance.The circuit structure of the utility model is relatively simple, cost is relatively low, the safety and reliability of circuit is higher.
Description
Technical field
The utility model is related to computer realms, more particularly to a kind of to have the function of the computer of power-failure protecting.
Background technology
The user that mesh is much worked with desktop computer, which should encounter, powers off this thing for allowing people's pain, sometimes without
The tripping of meaning has accidentally pulled out power cord etc. situation and causes to power off, and the content preserved not yet can all be allowed all to lose
It loses, very big economic loss can be sometimes caused to user.Traditional computer generates delay effect using power failure protection circuit,
Delay effect namely is generated when voltage ripple of power network or power failure, to reduce the harmful effect to computer.However,
The structure of the power failure protection circuit of traditional computer is complex, and hardware cost is higher.In addition, the power failure of traditional computer
Not enough, the safety and reliability for causing circuit is not high for the protection of protection circuit.
Utility model content
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of circuit knot
Structure is relatively simple, cost is relatively low, the safety and reliability of circuit is higher has the function of the computer of power-failure protecting.
Technical solution is used by the utility model solves its technical problem：Constructing a kind of has the function of power-failure protecting
Computer including shell, is equipped with circuit main board, the circuit main board is equipped with power failure protection circuit, described to stop in the shell
Electric protection circuit includes key switch, first resistor, second resistance, 3rd resistor, the 4th resistance, the first triode, the two or three
Pole pipe, third transistor, the first capacitance, the second capacitance, third capacitance, the first zener diode, the second Current Limiting Diodes and meter
Calculate electromechanical source, one end of the key switch respectively with one end of the 3rd resistor, the emitter of third transistor, the one or three
The cathode of the collector of pole pipe and the second Current Limiting Diodes connects, and the other end of the key switch passes through the first resistor point
One end not with one end of the second resistance and the 4th resistance is connect, the other end ground connection of the second resistance, the third
The other end of resistance connects respectively with the base stage of one end of first capacitance, the collector of the second triode and third transistor
Connect, the other end of first capacitance and the emitter of the second triode are grounded, the base stage of second triode respectively with
The anode connection of the other end and the first zener diode of 4th resistance；
The collector of the third transistor is connect by the third capacitance with the base stage of first triode, described
The one end of the emitter of first triode respectively with the cathode of first zener diode and computer power supply is connect, and described
The one end of one end of two capacitances respectively with the anode of second Current Limiting Diodes and 220V alternating currents is connect, second capacitance
The other end of the other end respectively with the other end of the computer power supply and 220V alternating currents connect, the electricity of the third capacitance
Capacitance is 390pF, the model CLD20B-TPMSTR of second Current Limiting Diodes.
There is the computer of power-failure protecting described in the utility model, the power failure protection circuit further includes
Four capacitances, one end of the 4th capacitance are connect with the other end of the 3rd resistor, the other end of the 4th capacitance and institute
The base stage connection of third transistor is stated, the capacitance of the 4th capacitance is 240pF.
There is the computer of power-failure protecting described in the utility model, the power failure protection circuit further includes
Five resistance, one end of the 5th resistance are connect with the cathode of second Current Limiting Diodes, the other end of the 5th resistance
It is connect with the collector of first triode, the resistance value of the 5th resistance is 16k Ω.
There is the computer of power-failure protecting described in the utility model, the power failure protection circuit further includes
Six resistance, one end of the 6th resistance and one end of 3rd resistor connect, the other end and the third of the 6th resistance
The emitter connection of triode, the resistance value of the 6th resistance is 18k Ω.
There is the computer of power-failure protecting described in the utility model, first triode and the two or three pole
Pipe is NPN type triode, and the third transistor is PNP type triode.
That implements the utility model has the function of the computer of power-failure protecting, has the advantages that：Due to power failure protector
Protection circuit include key switch, first resistor, second resistance, 3rd resistor, the 4th resistance, the first triode, the second triode,
Third transistor, the first capacitance, the second capacitance, third capacitance, the first zener diode, the second Current Limiting Diodes and calculating are electromechanical
Source, for the power failure protection circuit relative to the power failure protection circuit of traditional computer, the component used is less, in this way can be with
Hardware cost is reduced, in addition, third capacitance is used to prevent the interference between the first triode and third transistor, the second current limliting two
Pole pipe is used to carry out current-limiting protection, therefore circuit structure is relatively simple, cost is relatively low, the safety and reliability of circuit is higher.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the circuit that the utility model has the function of power failure protection circuit in computer one embodiment of power-failure protecting
Structure diagram.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
In the utility model has the function of the computer embodiment of power-failure protecting, there should be the calculating of power-failure protecting
Machine includes shell, and circuit main board is equipped in shell, and circuit main board is equipped with power failure protection circuit, the circuit of the power failure protection circuit
Structure diagram is as shown in Figure 1.In Fig. 1, the power failure protection circuit include key switch K, first resistor R1, second resistance R2,
3rd resistor R3, the 4th resistance R4, the first triode Q1, the second triode Q2, third transistor Q3, the first capacitance C1, second
Capacitance C2, third capacitance C3, the first zener diode D1, the second Current Limiting Diodes D2 and computer power supply VCC, wherein, button
Switch K one end respectively with one end of 3rd resistor R3, the emitter of third transistor Q3, the first triode Q1 collector and
The cathode connection of second Current Limiting Diodes D2, the other end of key switch K is by first resistor R1 respectively with second resistance R2's
One end is connected with one end of the 4th resistance R4, the other end of second resistance R2 ground connection, and the other end of 3rd resistor R3 is respectively with the
One end of one capacitance C1, the second triode Q2 collector connected with the base stage of third transistor Q3, the first capacitance C1's is another
End and the emitter of the second triode Q2 are grounded, the base stage of the second triode Q2 respectively with the other end of the 4th resistance R4 and the
The anode connection of one zener diode D1.
The collector of third transistor Q3 is connect by third capacitance C3 with the base stage of the first triode Q1, the first triode
The one end of the emitter of Q1 respectively with the cathode of the first zener diode D1 and computer power supply VCC is connect, the second capacitance C2's
The one end of one end respectively with the anode of the second Current Limiting Diodes D2 and 220V alternating currents is connect, the other end difference of the second capacitance C2
It is connect with the other end of computer power supply VCC and the other end of 220V alternating currents.
The power failure protection circuit is relative to the power failure protection circuit of traditional computer, and the component used is less, electricity
Line structure is relatively simple, can reduce hardware cost in this way.In addition, third capacitance C3 is coupled capacitor, for preventing the one or three
Interference between pole pipe Q1 and third transistor Q3.Second Current Limiting Diodes D2 is used for the first triode Q1 and 220V alternating currents
Between branch carry out current-limiting protection, therefore the safety and reliability of circuit is higher.It is noted that in the present embodiment,
The capacitance of third capacitance C3 is 390pF, the model CLD20B-TPMSTR of the second Current Limiting Diodes D2, certainly, actually should
In, the capacitance of third capacitance C3 can adjust accordingly as the case may be, and the second Current Limiting Diodes D2 can be selected
Other models have the diode of similar functions.
In the present embodiment, the first capacitance C1 is charged by second resistance R2 and third transistor Q3, when generation circut breaking
When, when the cathode voltage of the first zener diode D1 drops to the breakdown voltage of the first zener diode D1, two pole of the first voltage stabilizing
Pipe D1 ends, and the second triode Q2 is also switched off, and the first capacitance C1 electric discharges are more than second resistance R2 and first when the disconnection fault time
During the charge constant of capacitance C1, the first triode Q1 and third transistor Q3 cut-offs, deenergization voltage and calculating are electromechanical
The access of source VCC, and when the disconnection fault time being less than charge constant, the first triode Q1 and third transistor Q3 are led
It is logical, after failure, when the cathode voltage of the first zener diode D1 rises above the breakdown voltage of the first zener diode D1,
Circuit works normally.When circuit is in cut-off state, after disconnection fault exclusion, pushing button switch K can restore normal.
It is noted that in the present embodiment, the first triode Q1 and the second triode Q2 are NPN type triode, the
Three triode Q3 are PNP type triode.Certainly, in practical applications, the first triode Q1 and the second triode Q2 can also be equal
For PNP type triode, third transistor Q3 may be NPN type triode, but at this moment the structure of circuit also will accordingly become
Change.
In the present embodiment, which further includes the 4th capacitance C4, one end of the 4th capacitance C4 and 3rd resistor
The other end connection of R3, the other end of the 4th capacitance C4 are connect with the base stage of third transistor Q3.4th capacitance C4 is coupling electricity
Hold, for preventing the interference between the second triode Q2 and third transistor Q3, to further enhance the safety of circuit and can
By property.It is noted that in the present embodiment, the capacitance of the 4th capacitance C4 is 240pF, certainly in practical applications, the 4th
The capacitance of capacitance C4 can adjust accordingly as the case may be.
In the present embodiment, which further includes the 5th resistance R5, one end and the second current limliting of the 5th resistance R5
The cathode connection of diode D2, the other end of the 5th resistance R5 are connect with the collector of the first triode Q1.5th resistance R5 is
Current-limiting resistance, for carrying out current-limiting protection to the collector current of the first triode Q1, further to enhance the safety of circuit
Property and reliability.It is noted that in the present embodiment, the resistance value of the 5th resistance R5 is 16k Ω, certainly, in practical applications,
The resistance value of 5th resistance R5 can adjust accordingly as the case may be.
In the present embodiment, which further includes the 6th resistance R6, one end of the 6th resistance R6 and 3rd resistor
One end connection of R3, the other end of the 6th resistance R6 are connect with the emitter of third transistor Q3.6th resistance R6 is limited galvanic electricity
Resistance, for carrying out current-limiting protection to the emitter current of third transistor Q3, to further enhance current limitation effect.It is worth mentioning
It is that in the present embodiment, the resistance value of the 6th resistance R6 is 18k Ω, certainly, in practical applications, the resistance value of the 6th resistance R6 can be with
It adjusts accordingly as the case may be.
In short, in the present embodiment, which uses relative to the power failure protection circuit of traditional computer
Component it is less, circuit structure is relatively simple, can reduce hardware cost in this way.In addition, it is equipped in the power failure protection circuit
Coupled capacitor and Current Limiting Diodes, therefore the safety and reliability of circuit is higher.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of have the function of the computer of power-failure protecting, which is characterized in that including shell, circuit master is equipped in the shell
Plate, the circuit main board are equipped with power failure protection circuit, and the power failure protection circuit includes key switch, first resistor, second
Resistance, 3rd resistor, the 4th resistance, the first triode, the second triode, third transistor, the first capacitance, the second capacitance,
Three capacitances, the first zener diode, the second Current Limiting Diodes and computer power supply, one end of the key switch respectively with it is described
One end of 3rd resistor, the emitter of third transistor, the collector of the first triode and the second Current Limiting Diodes cathode connect
Connect, the other end of the key switch by the first resistor respectively with one end of the second resistance and the 4th resistance one
End connection, the other end ground connection of the second resistance, the other end of the 3rd resistor respectively with one end of first capacitance,
The collector of second triode is connected with the base stage of third transistor, the other end of first capacitance and the hair of the second triode
Emitter-base bandgap grading is grounded, the base stage of second triode respectively with the other end of the 4th resistance and the sun of the first zener diode
Pole connects；
The collector of the third transistor is connect by the third capacitance with the base stage of first triode, and described first
The one end of the emitter of triode respectively with the cathode of first zener diode and computer power supply is connect, second electricity
The one end of one end of appearance respectively with the anode of second Current Limiting Diodes and 220V alternating currents is connect, second capacitance it is another
The other end of the one end respectively with the other end of the computer power supply and 220V alternating currents is connect, the capacitance of the third capacitance
For 390pF, the model CLD20B-TPMSTR of second Current Limiting Diodes.
2. according to claim 1 have the function of the computer of power-failure protecting, which is characterized in that the power failure protection circuit
Further include the 4th capacitance, one end of the 4th capacitance is connect with the other end of the 3rd resistor, the 4th capacitance it is another
One end is connect with the base stage of the third transistor, and the capacitance of the 4th capacitance is 240pF.
3. according to claim 2 have the function of the computer of power-failure protecting, which is characterized in that the power failure protection circuit
The 5th resistance is further included, one end of the 5th resistance is connect with the cathode of second Current Limiting Diodes, the 5th resistance
The other end connect with the collector of first triode, the resistance value of the 5th resistance is 16k Ω.
4. according to claim 3 have the function of the computer of power-failure protecting, which is characterized in that the power failure protection circuit
Further include the 6th resistance, one end of the 6th resistance and one end of 3rd resistor connect, the other end of the 6th resistance with
The emitter connection of the third transistor, the resistance value of the 6th resistance is 18k Ω.
5. according to any one of claims 1 to 4, have the function of the computer of power-failure protecting, which is characterized in that described
First triode and the second triode are NPN type triode, and the third transistor is PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721845577.8U CN207601795U (en) | 2017-12-25 | 2017-12-25 | There is the computer of power-failure protecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721845577.8U CN207601795U (en) | 2017-12-25 | 2017-12-25 | There is the computer of power-failure protecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601795U true CN207601795U (en) | 2018-07-10 |
Family
ID=62766634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721845577.8U Expired - Fee Related CN207601795U (en) | 2017-12-25 | 2017-12-25 | There is the computer of power-failure protecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207601795U (en) |
-
2017
- 2017-12-25 CN CN201721845577.8U patent/CN207601795U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20191225 |