CN206211528U - A kind of DC lightning prevention circuit of load capacity high - Google Patents
A kind of DC lightning prevention circuit of load capacity high Download PDFInfo
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- CN206211528U CN206211528U CN201621191157.8U CN201621191157U CN206211528U CN 206211528 U CN206211528 U CN 206211528U CN 201621191157 U CN201621191157 U CN 201621191157U CN 206211528 U CN206211528 U CN 206211528U
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Abstract
The utility model discloses a kind of DC lightning prevention circuit of load capacity high, including shunt circuit and an at least anti-surge circuit in parallel with shunt circuit, along the sense of current, the shunt circuit is arranged on the front of anti-surge circuit, the shunt circuit includes piezo-resistance, the two ends of the piezo-resistance are connected with the positive pole and negative pole of power input respectively, each anti-surge circuit includes transient voltage suppressor diode and resistance, and the two ends after the transient voltage suppressor diode is in parallel with a resistor are connected with the positive pole and negative pole of power input respectively.The utility model drop residual voltage ability effect is significant, fast response time, load capacity higher, small volume, security performance are high and using flexible.
Description
Technical field
The utility model is related to lightning protection circuit technical field, is related specifically to a kind of DC lightning prevention electricity of load capacity high
Road.
Background technology
21 century is increasingly dependent on electronics, electrical equipment with the swift and violent development of science and technology, the live and work of people.
How to ensure the trouble free service of these equipment, the object of concern is also focused on into manufacturer in industry and operator.Wherein in thunder
Carrying out surge protection aspect is hit, is all a bit attached great importance to, such as track, civil aviaton, monitoring, modem in different industry fields
Room, base station etc..Equipment communication or treatment end in these industries, need to use direct current supply, these terminal devices when more
There are a large amount of precision elements inside, and the overvoltage produced to a variety of causes (such as thunderbolt, the surge of switching on and shutting down, electrostatic etc.) is very quick
Sense, it is desirable to which the lightning protection part of installation is suppressed the (finger reflected to lightning protection circuit or lightning protection device to these overvoltage for having harm
Mark is exactly sufficiently low residual voltage), all kinds of precision elements are sustained in alloing equipment, without the normal operation of influence.
Traditional lightning protection circuit exists not enough above：1. existing lightning protection circuit is mostly from piezo-resistance as main lightning protection
Device, but piezo-resistance is unsatisfactory on response time and drop residual voltage ability, and response speed is slow；2. existing anti-
Thunder and lightning road is used mostly the mode of inductance decoupling can not only limit lightning protection circuit forming the decoupling such as multi-stage diffluence, inductance device
Carrying load ability, and increase the volume of lightning protection circuit；3. the security performance of existing lightning protection circuit is poor.
But in view of the shortcomings of the prior art, developer is necessary to develop a kind of reasonable in design, simple structure, drop residual voltage energy
Power effect is significant, fast response time, load capacity are higher, small volume, security performance are high and use flexible load capacity high
DC lightning prevention circuit.
Utility model content
To solve the problems, such as prior art, the utility model purpose provides a kind of reasonable in design, simple structure, drop
Residual voltage ability effect is significant, fast response time, load capacity higher, small volume, security performance are high and are carried using flexible high band
The DC lightning prevention circuit of ability.
To solve above technical problem, what the utility model was realized using following technical scheme：
A kind of DC lightning prevention circuit of load capacity high, it is characterised in that including shunt circuit and in parallel with shunt circuit
An at least anti-surge circuit, along the sense of current, the shunt circuit is arranged on the front of anti-surge circuit, the shunt circuit
Including piezo-resistance, the two ends of the piezo-resistance are connected with the positive pole and negative pole of power input respectively, each Anti-surging electricity
Road includes transient voltage suppressor diode and resistance, the two ends difference after the transient voltage suppressor diode is in parallel with a resistor
It is connected with the positive pole and negative pole of power input.
In a preferred embodiment of the present utility model, the shunt circuit also includes a guarantor connected with piezo-resistance
Dangerous silk.
In a preferred embodiment of the present utility model, the anti-surge circuit is also in series with temperature fuse resistance.
In a preferred embodiment of the present utility model, the anti-surge circuit also includes that one is in series with a resistor luminous
Diode.
Compared with prior art, the utility model has advantages below：
1. residual voltage ability effect is significant drops, using transient voltage suppressor diode as main Anti-surging device, can be by
Circuit residual voltage is less than 130V, it can be seen that its drop residual voltage ability effect is significant.
2. fast response time, on main Anti-surging device, the response speed of transient voltage suppressor diode is better than pressure-sensitive
Resistance.
3. load capacity is higher, and the pressure drop of the input and output of this lightning protection circuit is minimum, further increases circuit band and bears
Loading capability.
4. small volume, this lightning protection circuit is due to the relation without the decoupling device such as inductance, the whole circuit for greatly reducing
Volume.
5. Surge handling capability can optionally carry out infinite cascade, and the anti-surge circuit in this lightning protection circuit can be according to demand
Unlimited parallel combination, reaches the effect for improving Surge handling capability.
6. safe, each antisurge main channel uses overcurrent protection, improves security；In addition, whole circuit is simultaneously
And extra increase shunt circuit carries out auxiliary and undertakes surge, improves and delay main devices service life.
7. support n+1 grades of surge capacity classifying index (by diode displaying).Such as two anti-surge circuits, then may be used
To provide 0,50%, 100% third gear lightning protection capability is indicated.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is circuit diagram of the present utility model.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Shown in reference picture 1, the DC lightning prevention circuit of the load capacity a kind of high be given in figure, including shunt circuit N1 and with
At least anti-surge circuit shunt circuit N1 in parallel.
Along the sense of current, shunt circuit N1 is arranged on the front of anti-surge circuit M1, M2, Mn, and shunt circuit N1 includes pressure
Quick resistance RV1 and fuse F0, piezo-resistance RV1 connected with fuse F0 after two ends respectively with the positive pole of power input and negative
Pole is connected.
Anti-surge circuit M1, M2, Mn include transient voltage suppressor diode V1, V2, Vn and resistance R1, R2, Rn, wink respectively
Two ends after state voltage suppression diode V1, V2, Vn is in parallel with resistance R1, R2, Rn respectively with the positive pole and negative pole of power input
It is connected.
Anti-surge circuit M1, M2, Mn are also in series with temperature fuse resistance F1, F2, Fn, when anti-surge circuit M1, M2, Mn hair
During raw short circuit, temperature fuse resistance F1, F2, the Fn being serially connected on anti-surge circuit M1, M2, Mn disconnect such that it is able to will damage
Anti-surge circuit M1, M2, Mn isolated from input power, effectively raise the security performance of the lightning protection circuit.
Anti-surge circuit M1, M2, Mn also include light emitting diode D1, D2, the Dn connected with resistance R1, R2, Rn, when anti-
When surge circuit M1, M2, Mn fail, temperature fuse resistance F1, F2, Fn disconnect automatically, the hair on anti-surge circuit M1, M2, Mn
Optical diode D1, D2, Dn can extinguish because of no electric current, so as to represent that the anti-surge circuit has been damaged.
Operation principle of the present utility model is as follows：
During the lightning protection circuit normal work, piezo-resistance RV1, transient voltage suppressor diode V1, V2, Vn almost disconnect shape
State, light emitting diode D1, D2, Dn have electric current to pass through, and normal luminous, represent that anti-surge circuit M1, M2, Mn are in normal shape
State.
When there is thunder-strike current to pass through the lightning protection circuit, transient voltage suppressor diode V1, V2, Vn are breakdown, thunderbolt electricity
The most of conducting by transient voltage suppressor diode V1, V2, Vn of stream discharges to the earth.Piezo-resistance RV1 is having thunderbolt electricity
Circulation is out-of-date also a breakdown characteristic, but due to piezo-resistance RV1 response time than transient voltage suppressor diode V1,
V2, Vn are slow, so certain shunting action can only be played.
Shunt circuit N1 in the lightning protection circuit plays shunting action for anti-surge circuit M1, M2, Mn, while avoiding wave resistance
Gush circuit M1, M2, Mn and the situation of running at full capacity occur, anti-surge circuit M1, M2, Mn are primarily served most of thunder-strike current
The effect of the earth is discharged into, is consumed by device (transient voltage suppressor diode, resistance and Light-Emitting Diode) itself on a small quantity, while
Surge voltage can also be suppressed and clamper, the equipment that protection is connected with power output end is not damaged by thunder-strike current.
The utility model has advantages below in sum：
1. residual voltage ability effect is significant drops, using transient voltage suppressor diode as main Anti-surging device, can be by
Circuit residual voltage is less than 130V, it can be seen that its drop residual voltage ability effect is significant.
2. fast response time, on main Anti-surging device, the response speed of transient voltage suppressor diode is better than pressure-sensitive
Resistance.
3. load capacity is higher, and the pressure drop of the input and output of this lightning protection circuit is minimum, further increases circuit band and bears
Loading capability.
4. small volume, this lightning protection circuit is due to the relation without the decoupling device such as inductance, the whole circuit for greatly reducing
Volume.
5. Surge handling capability can optionally carry out infinite cascade, and the anti-surge circuit in this lightning protection circuit can be according to demand
Unlimited parallel combination, reaches the effect for improving Surge handling capability.
6. safe, each antisurge main channel uses overcurrent protection, improves security；In addition, whole circuit is simultaneously
And extra increase shunt circuit carries out auxiliary and undertakes surge, improves and delay main devices service life.
7. support n+1 grades of surge capacity classifying index (by diode displaying).Such as two anti-surge circuits, then may be used
To provide 0,50%, 100% third gear lightning protection capability is indicated.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, the utility model can also on the premise of the utility model spirit and scope are not departed from
There are various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.The utility model will
Protection domain is asked to be defined by appending claims and its equivalent.
Claims (4)
1. a kind of DC lightning prevention circuit of load capacity high, it is characterised in that including shunt circuit and in parallel with shunt circuit
An at least anti-surge circuit, along the sense of current, the shunt circuit is arranged on the front of anti-surge circuit, the shunt circuit bag
Piezo-resistance is included, the two ends of the piezo-resistance are connected with the positive pole and negative pole of power input respectively, each anti-surge circuit
Include transient voltage suppressor diode and resistance, two ends after the transient voltage suppressor diode is in parallel with a resistor respectively with
The positive pole of power input is connected with negative pole.
2. a kind of DC lightning prevention circuit of load capacity high as claimed in claim 1, it is characterised in that：The shunt circuit is also
Including a fuse connected with piezo-resistance.
3. a kind of DC lightning prevention circuit of load capacity high as claimed in claim 1, it is characterised in that：The anti-surge circuit
Also it is in series with temperature fuse resistance.
4. the DC lightning prevention circuit of the load capacity a kind of high as described in claim 1 or 3, it is characterised in that：The Anti-surging
Circuit also includes a light emitting diode in series with a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621191157.8U CN206211528U (en) | 2016-10-31 | 2016-10-31 | A kind of DC lightning prevention circuit of load capacity high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621191157.8U CN206211528U (en) | 2016-10-31 | 2016-10-31 | A kind of DC lightning prevention circuit of load capacity high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206211528U true CN206211528U (en) | 2017-05-31 |
Family
ID=58752721
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621191157.8U Active CN206211528U (en) | 2016-10-31 | 2016-10-31 | A kind of DC lightning prevention circuit of load capacity high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206211528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374448A (en) * | 2016-10-31 | 2017-02-01 | 上海欣丰电子有限公司 | DC lightning protection circuit with high load capacity |
-
2016
- 2016-10-31 CN CN201621191157.8U patent/CN206211528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374448A (en) * | 2016-10-31 | 2017-02-01 | 上海欣丰电子有限公司 | DC lightning protection circuit with high load capacity |
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