CN103580015B - A kind of LIGHTNING FILTER and electronic equipment - Google Patents
A kind of LIGHTNING FILTER and electronic equipment Download PDFInfo
- Publication number
- CN103580015B CN103580015B CN201210277989.1A CN201210277989A CN103580015B CN 103580015 B CN103580015 B CN 103580015B CN 201210277989 A CN201210277989 A CN 201210277989A CN 103580015 B CN103580015 B CN 103580015B
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- Prior art keywords
- inductance
- lightning
- load circuit
- filter
- power transmission
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Abstract
The invention belongs to anti-thunder technical field, it is provided that a kind of LIGHTNING FILTER being independent of electric capacity and electronic equipment.LIGHTNING FILTER therein includes: be connected on by the inductance on the power transmission line inlet wire of protection load circuit；And the non-linear voltage between being connected in parallel on by two power transmission line inlet wires of protection load circuit limits element.The LIGHTNING FILTER that the present invention proposes is that the electric capacity using non-linear voltage to limit in the element existing LC wave filter of replacement realizes thunder and lightning filtering, for electric capacity, non-linear voltage limits the filter effect of element not to be affected by processing technology own and parameter, there is great using value, and design simple, with low cost.
Description
Technical field
The invention belongs to anti-thunder technical field, particularly relate to a kind of LIGHTNING FILTER being independent of electric capacity and electricity
Subset.
Background technology
Lightning Disaster is the one in ten kinds of natural disasters the most serious of international publication.Annual Lightning Disaster
Accident is frequent, involves a wide range of knowledge, constitutes a serious threat the security of the lives and property of broad masses of the people.Especially
It is in the electronic device, for ensureing the safe operation of equipment, electronic equipment need to be carried out lightning protection.
A kind of lightning protection circuit that prior art provides is to utilize Surge Protector to be released by lightning current into big
Ground.This circuit is specifically by surge in parallel between electric signal input end and the earth of protection electronic equipment
Protector, when the lightning current pouring in electric signal input end exceedes certain value, at electric signal input end
Voltage be lifted to the startup voltage of Surge Protector, Surge Protector can present the state of near short circuit,
Lightning current is introduced the earth.
The another kind of lightning protection circuit that prior art provides is to utilize electromagnetism at the lightning protection end of electronic equipment
Compatible (Electro Magnetic Compatibility, EMC) filter circuit uses as LIGHTNING FILTER.
This kind of EMC filter circuit is typically made up of electric capacity and inductance, as Fig. 1 shows the pi type filter of classics
Circuit, this pi type filter circuit utilizes electric capacity C1 to constitute first order filter circuit, electricity with the resistance of prime
Sense L1 and electric capacity C2 constitute second level filter circuit, and the collocation of two stage filter circuit is so that characteristic frequency
Electric current is released by electric capacity, it is achieved the effect of frequency-selective filtering.
Well known, thunder energy is extremely large, to make the moment several ten thousand even lightning current of hundreds of thousands ampere
Being released, electric capacity selected in above-mentioned EMC filter circuit must have the biggest capacitance with very big
Pressure voltage, and be to manufacture this electric capacity almost without method with at present science and technology level and manufacturing process, therefore,
The above-mentioned EMC filter circuit that prior art provides is only capable of filtering the low-down pole of part energy rank
Weak lightning current, very limited to the filter effect of lightning current.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of LIGHTNING FILTER, it is intended to solve in prior art,
As the EMC filter circuit of lightning current wave filter due to the capacity of electric capacity used and the limit of pressure voltage
System so that the problem to lightning current filter effect difference.
The embodiment of the present invention is achieved in that a kind of LIGHTNING FILTER, and described LIGHTNING FILTER includes:
It is connected on by the inductance on the power transmission line inlet wire of protection load circuit；And
It is connected in parallel on described first by the non-linear voltage restriction between two power transmission line inlet wires of protection load circuit
Part.
The another object of the embodiment of the present invention there are provided a kind of electronic equipment, including being protected load electricity
Road, described electronic equipment also include being connected to described by the power transmission line inlet wire of protection load circuit at least
One-level LIGHTNING FILTER, described LIGHTNING FILTER is LIGHTNING FILTER as above.
The LIGHTNING FILTER that the embodiment of the present invention proposes is to use non-linear voltage to limit element to substitute existing
Electric capacity in LC wave filter realizes thunder and lightning filtering, and for electric capacity, non-linear voltage limits element
Filter effect do not affected by processing technology own and parameter, there is great using value, and design
Simply, with low cost.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing pi type filter；
Fig. 2 is the circuit theory diagrams of the electronic equipment that the embodiment of the present invention provides；
Fig. 3 is the circuit diagram of the LIGHTNING FILTER that first embodiment of the invention provides；
Fig. 4 is the circuit diagram of the LIGHTNING FILTER that second embodiment of the invention provides；
Fig. 5 is the circuit diagram of the LIGHTNING FILTER that third embodiment of the invention provides；
Fig. 6 is the circuit diagram of the LIGHTNING FILTER that fourth embodiment of the invention provides；
Fig. 7 is in the embodiment of the present invention, the characteristic curve of inductor.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and
Embodiment, is further elaborated to the present invention.Should be appreciated that described herein being embodied as
Example only in order to explain the present invention, is not intended to limit the present invention.
Asking of thunder and lightning filtering it is not suitable for due to the restriction of electric capacity itself for existing EMC filter circuit
Topic, the LIGHTNING FILTER that the embodiment of the present invention proposes uses non-linear voltage to limit element and substitutes existing electricity
Hold.
Fig. 2 shows the circuit theory of the electronic equipment that the embodiment of the present invention provides, for convenience of description,
Illustrate only the part relevant to the embodiment of the present invention.
The electronic equipment that the embodiment of the present invention provides includes: by protection load circuit 2；It is connected to be protected negative
Carry at least one-level LIGHTNING FILTER 1 on the power transmission line inlet wire of circuit 2.In order to avoid existing EMC filters
The problem that circuit exists, LIGHTNING FILTER 1 includes being connected on by the power transmission line inlet wire of protection load circuit 2
On inductance, and be connected in parallel on by protection load circuit 2 two power transmission line inlet wires between non-linear electricity
Pressure limits element.
When there is thunder-strike current, non-linear voltage limits element for the electricity less, non-linear at lightning current
When the terminal voltage of pressure restriction element is not up to the conducting voltage that non-linear voltage limits element, utilize non-linear
The parasitic capacitance of voltage limiting element and inductance form LC wave filter, and weak lightning current is formed filtering, also
Reach non-linear voltage for terminal voltage less at lightning current, that non-linear voltage limits element and limit element
Conducting voltage time conducting, to provide the path of releasing of strong lightning current.
LIGHTNING FILTER in the electronic equipment that the embodiment of the present invention proposes is to use non-linear voltage to limit unit
Part substitutes the electric capacity in existing LC wave filter and realizes thunder and lightning filtering, for electric capacity, non-linear
The filter effect of voltage limiting element is not affected by processing technology own and parameter, has application greatly
It is worth, and designs simple, with low cost.
In practice, the structure of LIGHTNING FILTER 1 is similar, only to the structure of existing various LC wave filter
Electric capacity in existing various LC wave filter is replaced with non-linear voltage and limits element, and this non-thread
Property voltage limiting element be not limited to varistor, discharge tube, Transient Suppression Diode and/or other have
The semiconductor device of similar characteristics.The circuit of four kind typical LIGHTNING FILTER 1 be set forth below:
Fig. 3 shows the circuit of the LIGHTNING FILTER 1 that first embodiment of the invention provides.
In the first embodiment of the invention, LIGHTNING FILTER 1 includes: inductance L2, varistor VR1,
Varistor VR2.Inductance L2 is connected on a power transmission line inlet wire by protection load circuit 2, inductance
One end of L2 is connected by another power transmission line inlet wire of protection load circuit 2, electricity by varistor VR1
The other end of sense L2 connects to be entered by another power transmission line of protection load circuit 2 by varistor VR2
Line.
Fig. 4 shows the circuit of the LIGHTNING FILTER 1 that second embodiment of the invention provides.
In second embodiment of the invention, LIGHTNING FILTER 1 includes: inductance L3, inductance L4, pressure-sensitive electricity
Resistance VR3, discharge tube G1.Inductance L3 is connected on a power transmission line inlet wire by protection load circuit 2,
Inductance L4 is connected on another power transmission line inlet wire by protection load circuit 2, and varistor VR3 is also
Being associated between one end of inductance L3 and one end of inductance L4, discharge tube G1 is connected in parallel on another of inductance L3
Between end and the other end of inductance L4.
Fig. 5 shows the circuit of the LIGHTNING FILTER 1 that third embodiment of the invention provides.
In third embodiment of the invention, LIGHTNING FILTER 1 includes: inductance L5, inductance L6, transient state press down
Diode V1 processed.Inductance L5 is connected on a power transmission line inlet wire by protection load circuit 2, inductance
L6 is connected on another power transmission line inlet wire by protection load circuit 2, and Transient Suppression Diode V1 is also
Be associated in inductance L5 away from described by protection one end of load circuit and inductance L6 away from described negative by protection
Carry between one end of circuit.
Fig. 6 shows the circuit of the LIGHTNING FILTER 1 that fourth embodiment of the invention provides.
In fourth embodiment of the invention, LIGHTNING FILTER 1 includes: inductance L7, inductance L8, pressure-sensitive electricity
Resistance VR4, varistor VR5, varistor VR6.Inductance L7 and inductance L8 is serially connected and is being protected
Protecting on a power transmission line inlet wire of load circuit 2, second end of inductance L7 is with first end of inductance L8 altogether
Connecing, it is defeated with by another of protection load circuit 2 that varistor VR4 is connected in parallel on first end of inductance L7
Between electric wire inlet wire, varistor VR5 is connected in parallel on second end of inductance L7 and by protection load circuit 2
Another power transmission line inlet wire between, varistor VR6 is connected in parallel on second end of inductance L8 and is protected
Between another power transmission line inlet wire of load circuit 2.
Well known, existing LC wave filter is that the resonance by LC realizes frequency-selective filtering, its resonance
Frequency is related with inductance and electric capacity, and owing to the electric capacity in LC wave filter is replaced with by the embodiment of the present invention
Non-linear voltage limits element, and therefore its frequency-selecting frequency will be determined by inductance L, so in the present invention
State the fixed inductance that the inductance in embodiment is different from existing LC wave filter, and should be and there is frequency-selecting merit
The inducer of energy.
The most well known, it is assumed that μ0For permeability of vacuum, μrIt is coil for magnetic core relative permeability, S
Sectional area, N are coil turn, leFor the length of magnetic path, then fixed inductance L is defined as:
In general, inducer after completing, its permeability of vacuum μ0, coil section amass S, coil turn
Number N, length of magnetic path leBeing fixed value, inducer L to be made has different responses, needs magnetic core phase
To magnetic permeability μrThere is different characteristics.Therefore, the inductance with frequency-selecting function in the embodiment of the present invention
Device should be inductor, and the permeability characteristics of this inductor should be such as Fig. 7
Shown in, △ f therein is the collection midband of lightning current energy.In the embodiment of the present invention, variable magnetic conductance electricity
Sensor can be rung by doping different frequency by the mixing of a kind of magnetic conductor or multiple magnetic conductor as matrix
The material allotment answered forms, magnetic conductor therein can be not limited to amorphous and nano-crystal soft magnetic alloy,
Permalloy, silicon steel, ferrite etc..
The embodiment of the present invention additionally provides a kind of LIGHTNING FILTER as above.
The LIGHTNING FILTER that the embodiment of the present invention proposes is to use non-linear voltage to limit element to substitute existing
Electric capacity in LC wave filter realizes thunder and lightning filtering, and for electric capacity, non-linear voltage limits element
Filter effect do not affected by processing technology own and parameter, there is great using value, and design
Simply, with low cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of invention and principle, should be included in this
Within the protection domain of invention.
Claims (7)
1. a LIGHTNING FILTER, described LIGHTNING FILTER includes:
It is connected on by the inductance on the power transmission line inlet wire of protection load circuit, and is connected in parallel on described protection
Non-linear voltage between two power transmission line inlet wires of load circuit limits element, it is characterised in that described
Non-linear voltage limits element and is not up to described non-for the terminal voltage limiting element at described non-linear voltage
When linear voltage limits the conducting voltage of element, described non-linear voltage is utilized to limit the parasitic capacitance of element
With described inductance, lightning current is filtered, and limit the terminal voltage of element at described non-linear voltage and reach described
Conducting when non-linear voltage limits the conducting voltage of element, to provide the path of releasing of lightning current；
The electric capacity in LC wave filter, the most described thunder is substituted owing to limiting element with described non-linear voltage
The frequency-selecting frequency of electrical filter will be determined by inductance L, and the most described inductance has frequency-selecting function, for variable magnetic
Conductance inducer；
Described inductor, is led to as matrix by the mixing of a kind of magnetic conductor or multiple magnetic conductor
The material allotment of overdoping different frequency response forms, and magnetic conductor therein is amorphous and nano-crystal soft-magnetic conjunction
Gold, permalloy, silicon steel or ferrite.
2. LIGHTNING FILTER as claimed in claim 1, it is characterised in that described non-linear voltage limits
Element is varistor, discharge tube and/or Transient Suppression Diode.
3. LIGHTNING FILTER as claimed in claim 1, it is characterised in that described LIGHTNING FILTER includes:
Inductance L2, varistor VR1, varistor VR2；
Described inductance L2 is connected on a described power transmission line inlet wire by protection load circuit, described inductance
One end of L2 connects described another power transmission line by protection load circuit by described varistor VR1 and enters
Line, the other end of described inductance L2 connects described by protection load circuit by described varistor VR2
Another power transmission line inlet wire.
4. LIGHTNING FILTER as claimed in claim 1, it is characterised in that described LIGHTNING FILTER includes:
Inductance L3, inductance L4, varistor VR3, discharge tube G1；
Described inductance L3 is connected on a described power transmission line inlet wire by protection load circuit, described inductance
L4 is connected on described another power transmission line inlet wire by protection load circuit, and described varistor VR3 is also
Being associated between one end of described inductance L3 and one end of described inductance L4, described discharge tube G1 is connected in parallel on
Between the other end and the other end of described inductance L4 of described inductance L3.
5. LIGHTNING FILTER as claimed in claim 1, it is characterised in that described LIGHTNING FILTER includes:
Inductance L5, inductance L6, Transient Suppression Diode V1；
Described inductance L5 is connected on a described power transmission line inlet wire by protection load circuit, described inductance
L6 is connected on described another power transmission line inlet wire by protection load circuit, described Transient Suppression Diode
V1 be connected in parallel on described inductance L5 away from described by protection one end of load circuit and described inductance L6 away from
Between described one end by protection load circuit.
6. LIGHTNING FILTER as claimed in claim 1, it is characterised in that described LIGHTNING FILTER includes:
Inductance L7, inductance L8, varistor VR4, varistor VR5, varistor VR6；
Described inductance L7 and described inductance L8 is serially connected in a described transmission of electricity by protection load circuit
On line inlet wire, second end of described inductance L7 connects altogether with first end of described inductance L8, described pressure-sensitive electricity
Resistance VR4 is connected in parallel on first end of described inductance L7 and described another power transmission line by protection load circuit
Between inlet wire, the second end that described varistor VR5 is connected in parallel on described inductance L7 is negative by protection with described
Carrying between another power transmission line inlet wire of circuit, described varistor VR6 is connected in parallel on described inductance L8's
Between second end and described another power transmission line inlet wire by protection load circuit.
7. an electronic equipment, including being protected load circuit, it is characterised in that described electronic equipment is also
Described by least one-level LIGHTNING FILTER on the power transmission line inlet wire of protection load circuit, institute including being connected to
Stating LIGHTNING FILTER is the LIGHTNING FILTER as described in any one of claim 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277989.1A CN103580015B (en) | 2012-08-07 | 2012-08-07 | A kind of LIGHTNING FILTER and electronic equipment |
| PCT/CN2013/075411 WO2014023116A1 (en) | 2012-08-07 | 2013-05-09 | Lightning filter and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210277989.1A CN103580015B (en) | 2012-08-07 | 2012-08-07 | A kind of LIGHTNING FILTER and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103580015A CN103580015A (en) | 2014-02-12 |
| CN103580015B true CN103580015B (en) | 2016-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210277989.1A Active CN103580015B (en) | 2012-08-07 | 2012-08-07 | A kind of LIGHTNING FILTER and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103580015B (en) |
| WO (1) | WO2014023116A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206196077U (en) * | 2016-11-18 | 2017-05-24 | 佛山市顺德区美的电热电器制造有限公司 | Switch drive circuit , control circuit and electromagnetism stove |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5124873A (en) * | 1989-10-30 | 1992-06-23 | Efi Corporation | Surge suppression circuit for high frequency communication networks |
| US5311393A (en) * | 1992-04-08 | 1994-05-10 | Atlantic Sientific Corporation | Transient voltage surge suppressor with I2 R/I2 T overcurrent protection switch |
| CN1885713A (en) * | 2005-06-24 | 2006-12-27 | Tdk株式会社 | Surge absorption circuit |
| CN201918723U (en) * | 2010-12-24 | 2011-08-03 | 杭州西子光电网络有限公司 | Lightning arrester |
| CN202058567U (en) * | 2011-05-05 | 2011-11-30 | 南海发展股份有限公司 | Lightning-proof isolation transformer |
| CN202206137U (en) * | 2011-08-31 | 2012-04-25 | 江苏怡丰通信设备有限公司 | Lightning-proof protection circuit of telecommunication terminal equipment |
| CN202363893U (en) * | 2011-09-06 | 2012-08-01 | 北京广利核系统工程有限公司 | Digital input electromagnetic interference protection circuit |
| CN102957141A (en) * | 2011-08-31 | 2013-03-06 | 江苏怡丰通信设备有限公司 | Lightning protection circuit of telecommunication terminal equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPO711697A0 (en) * | 1997-05-30 | 1997-06-26 | Australian Protective Electronics Pty Ltd | Line filter |
| CN103051369A (en) * | 2012-12-28 | 2013-04-17 | 成都泰格微电子研究所有限责任公司 | Wireless ad hoc network-based wireless repeater |
-
2012
- 2012-08-07 CN CN201210277989.1A patent/CN103580015B/en active Active
-
2013
- 2013-05-09 WO PCT/CN2013/075411 patent/WO2014023116A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5124873A (en) * | 1989-10-30 | 1992-06-23 | Efi Corporation | Surge suppression circuit for high frequency communication networks |
| US5311393A (en) * | 1992-04-08 | 1994-05-10 | Atlantic Sientific Corporation | Transient voltage surge suppressor with I2 R/I2 T overcurrent protection switch |
| CN1885713A (en) * | 2005-06-24 | 2006-12-27 | Tdk株式会社 | Surge absorption circuit |
| CN201918723U (en) * | 2010-12-24 | 2011-08-03 | 杭州西子光电网络有限公司 | Lightning arrester |
| CN202058567U (en) * | 2011-05-05 | 2011-11-30 | 南海发展股份有限公司 | Lightning-proof isolation transformer |
| CN202206137U (en) * | 2011-08-31 | 2012-04-25 | 江苏怡丰通信设备有限公司 | Lightning-proof protection circuit of telecommunication terminal equipment |
| CN102957141A (en) * | 2011-08-31 | 2013-03-06 | 江苏怡丰通信设备有限公司 | Lightning protection circuit of telecommunication terminal equipment |
| CN202363893U (en) * | 2011-09-06 | 2012-08-01 | 北京广利核系统工程有限公司 | Digital input electromagnetic interference protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014023116A1 (en) | 2014-02-13 |
| CN103580015A (en) | 2014-02-12 |
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Inventor after: Duan Ke Inventor after: Zhang Tingyan Inventor after: Luan Haiyuan Inventor before: Zhang Tingyan Inventor before: Luan Haiyuan |