CN106782957A - A kind of compound MOV components with discharging structure - Google Patents
A kind of compound MOV components with discharging structure Download PDFInfo
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- CN106782957A CN106782957A CN201710031497.7A CN201710031497A CN106782957A CN 106782957 A CN106782957 A CN 106782957A CN 201710031497 A CN201710031497 A CN 201710031497A CN 106782957 A CN106782957 A CN 106782957A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/105—Varistor cores
- H01C7/108—Metal oxide
- H01C7/112—ZnO type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
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- Thermistors And Varistors (AREA)
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Abstract
The present invention provides a kind of compound MOV components with discharging structure, that is FDMOV components, including insulation fixing plate, tripping electrode, the sparking electrode being located in successively between the insulation fixing plate and the tripping electrode, insulation ring plate, MOV chips, the insulation fixing plate and the tripping electrode are fixed by fastener；Operating voltage is not carried when the present invention is used, with without Leakage Current, long lifespan, reliability is high, be easy to processing, it is cost-effective the characteristics of, after carrying out cold working to all components, welded without heating, it is to avoid fire damage, simple and fast is installed, it is adapted to mechanization, it is with low cost, with great economic use value.
Description
Technical field
It is more particularly to a kind of with the compound of discharging structure the present invention relates to metal oxide piezo-resistance technical field
MOV components, hereinafter referred to as FDMOV components.
Background technology
Existing zinc oxide varistor (Metal Oxide Varistors, MOV) has special non-linear electricity
Stream-voltage characteristic, when the environment of application meets with thunderbolt, the interference of electromagnetic field, power switch frequent movement, power system failure, will
So that voltage spikes on circuit, more than the conducting voltage of the MOV, make the MOV enter conducting area, electric current and voltage are in non-thread
Sexual intercourse, now, the MOV impedances step-down, only several ohms make overvoltage form burst current and flow out, and use protection institute
The electronic product or expensive component of connection.
With the fast development of clean energy technology, the popularization of high ferro and electric mechanical (such as robot, manipulator etc.)
Extensive use, existing MOV hinders some application fields due to charged produced leakage current in the application, influences MOV's again
The rail signal of service life, such as railway；These fields are to protect, and do not allow have leakage current to produce during normal work
Raw, such as 5G is communicated due to the long-life disposable products performance requirement of high reliability, therefore, existing MOV cannot meet reality
Demand, need to further improve.
The content of the invention
The present invention provides a kind of compound MOV components with discharging structure for above-mentioned the deficiencies in the prior art, uses
When do not carry operating voltage, with without Leakage Current, long lifespan, reliability is high, be easy to processing, packaging efficiency it is high, low cost
Feature.
The present invention is for the used technical scheme that solves the above problems：
A kind of compound MOV components with discharging structure of present invention offer, i.e. FDMOV components, including insulation fixing plate,
Tripping electrode, the sparking electrode piece being located in successively between the insulation fixing plate and the tripping electrode, insulation ring plate, MOV
Chip, the insulation fixing plate and the tripping electrode are fixed by fastener.
Further, including sparking electrode, the sparking electrode located at the sparking electrode piece and the insulation ring plate it
Between, the insulation fixing plate includes the first insulation fixing plate and the second insulation fixing plate, and second insulation fixing plate is located at institute
Tripping electrode top is stated, the tripping electrode is axially arranged with leading foot；Or, the leading foot of the tripping electrode is radially drawn
And extend.
Further, the insulation fixing plate includes the first insulation fixing plate and the second insulation fixing plate, the MOV cores
Piece includes a MOV chips and the 2nd MOV chips, and the tripping electrode piece includes the first tripping electrode piece and the second tripping electrode
Piece, the insulation ring plate includes the first insulation ring plate and the second insulation ring plate；First insulation fixing plate, the first tripping electrode
Piece, a MOV chips, the first insulation ring plate, sparking electrode piece, the second insulation ring plate, the 2nd MOV chips, the second tripping electrode
Piece, insulation fixing plate sequential are simultaneously fastened by the fastener, are equivalent to differential mode protection circuit structure.
Also further, the sparking electrode piece includes the first sparking electrode piece and the second sparking electrode piece, the insulation
Ring plate includes the first insulation ring plate and the second insulation ring plate, and the MOV chips include a MOV chips and the 2nd MOV chips；Institute
State the first sparking electrode piece, the first insulation ring plate, a MOV chips, tripping electrode piece, the 2nd MOV chips, the second dead ring
Piece, the second sparking electrode piece sequential are simultaneously fastened by the fastener, are equivalent to paralleling model circuit structure.
Further, including electrode clamping plate, the electrode clamping plate includes bottom electrode clamping plate and Top electrode clamping plate, described
MOV chips include a MOV chips and the 2nd MOV chips；The bottom electrode clamping plate, a MOV chips, tripping electrode piece,
Two MOV chips, Top electrode clamping plate, insulation ring plate, sparking electrode piece, insulation fixing plate sequential and pass through the fastener it is tight
Gu, it is equivalent to and series model circuit structure.
Again further, the insulation fixing plate, the tripping electrode, the sparking electrode piece, the electrode clamping plate
The through hole or screw for communicating are provided with demand, and the fastener is metal or nonmetallic rivet or screw, by the fastener
The fixation compound MOV components.
Specifically, the sparking electrode be conductive material, the conductive material be copper, aluminium, iron nickel, siderochrome, ferrimanganic, carbon,
The combination of one or more in graphite.
Specifically, the insulation ring plate thickness is 0.01~5mm, a diameter of 5~40mm of center ring hole, external diameter is 7~
60mm, the material of the insulation ring plate is polytetrafluoroethylene, micarex, fish paper, epoxy plate, alumina plate, carborundum plate, pottery
At least one or several combination in porcelain plate.
Specifically, also including being coated on the insulating barrier of the compound MOV components outer layer, the insulating barrier uses epoxy powder
Encapsulating or phenolic resin encapsulating；The compound MOV components also include insulation box body, and the insulation box body passes through insulation encapsulated glue
Embedding.
Specifically, the sparking electrode piece material is one or more in copper, aluminium, iron nickel, siderochrome, ferrimanganic, carbon, graphite
Combination；Insulation fixing plate material be epoxy, Fen Chuo, red cardboard, micarex, plastic plate, alumina plate, carborundum, quartz plate,
The combination of one or more in ceramic wafer.
It should be noted that：The sparking electrode piece is circular or rectangular flat shape；The insulation fixing plate for circular or
Rectangular flat shape, described insulation fixing plate epoxy, Fen Chuo, red cardboard, micarex, plastic plate, alumina plate, carborundum, stone
The combination of one or more in English plate, ceramic wafer.The FDMOV components carry out epoxy powder Huo Fen Chuo resins by conventional process
Encapsulating, to adapt to be normally applied, when the FDMOV components encapsulated are used in the environment of requirements at the higher level, is loaded into absolutely
Edge box body, and by insulation encapsulated glue embedding.
The beneficial effects of the present invention are：
A kind of compound MOV components with discharging structure provided by the present invention, do not carry operating voltage when using, tool
Whether there is Leakage Current, long lifespan, reliability is high, be easy to processing, it is cost-effective the characteristics of, cold working is carried out to all components
Afterwards, welded without heating, it is to avoid fire damage, simple and fast is installed, be adapted to mechanization, it is with low cost, with great economy
Use value.
Brief description of the drawings
Fig. 1 is a kind of compound MOV modular constructions explosive view with discharging structure in embodiment 1；
Fig. 2 is a kind of compound MOV modular constructions explosive view with discharging structure in embodiment 2；
Fig. 3 is a kind of compound MOV modular constructions explosive view with discharging structure in embodiment 3；
Fig. 4 is a kind of compound MOV component equivalent circuits figure with discharging structure of embodiment 1-3；
Fig. 5 is a kind of compound MOV modular constructions explosive view with discharging structure in embodiment 4；
Fig. 6 is a kind of compound MOV component equivalent circuits figure with discharging structure of embodiment 4；
Fig. 7 is a kind of compound MOV modular constructions explosive view with discharging structure of embodiment 5；
Fig. 8 is a kind of compound MOV component equivalent circuits figure with discharging structure of embodiment 5；
Fig. 9 is a kind of compound MOV modular constructions explosive view with discharging structure of embodiment 6；
Figure 10 is a kind of compound MOV component equivalent circuits figure with discharging structure of embodiment 6.
Specific embodiment
Embodiments of the present invention are specifically illustrated below in conjunction with the accompanying drawings, and accompanying drawing is only for reference and explanation is used, and it is right not constitute
The limitation of scope of patent protection of the present invention.
Embodiment 1
As shown in figure 1, the present invention provides a kind of compound MOV components with discharging structure, i.e. FDMOV components, including
Insulation fixing plate 1, sparking electrode piece 2, insulation ring plate 3, MOV chips 4, tripping electrode 5 and fastener, the MOV chips 4 are circle
Shape MOV chips 4.
The insulation fixing plate 1 is rectangular dielectric fixed plate, and the corner of the rectangular dielectric fixed plate is provided with four spiral shells
Hole 11,12,13,14.
The sparking electrode piece 2 is circular discharge electrode slice, the straight radian of the circular discharge electrode slice and the circular MOV
Chip is identical, and extraction electrode 21 is additionally provided with the sparking electrode piece 2.
The insulation ring plate 3 is annular insulation ring plate, and the straight radian of profile of the annular insulation ring plate is more than circle MOV chips
Diameter 1-5mm.
The Biao Mian Tu of the MOV chips 4 cover combination electrode.
Tripping electrode piece 5 is metal dropout electrode slice, and the metal dropout electrode slice is rectangular metal tripping electrode piece, institute
The corner for stating rectangular metal tripping electrode piece is provided with four through holes 51,52,53,54, the rectangular metal tripping electrode piece also
It is provided with parallel extraction electrode 500.
The insulation fixing plate, sparking electrode piece, insulation ring plate, MOV chips, tripping electrode sequential, by screw
Four screws 11,12,13,14 of 4 through holes 51,52,53,54 and the insulation fixing plate of penetrating the tripping electrode piece 5 are worn,
The insulation fixing plate, sparking electrode piece, insulation ring plate, MOV chips, tripping electrode are sequentially fastened.
In the present embodiment, the sparking electrode piece material is copper sparking electrode piece.
In the present embodiment, the insulation fixing plate material is epoxy insulation fixed plate.
In the present embodiment, the insulation ring plate thickness is 0.01~5mm, and center ring hole is 3~15mm, outside dimension diameter
Than the big 3mm of MOV chip diameters, the material of the insulation ring plate is polytetrafluoroethylene.
Embodiment 2
As shown in Fig. 2 the present embodiment difference from Example 1 is：Including sparking electrode 7, the sparking electrode 7 sets
Between the sparking electrode piece 2 and the insulation ring plate 3, the insulation fixing plate includes the first insulation fixing plate 1-1 and the
Two insulation fixing plate 1-2, the second insulation fixing plate 1-2 are located at the top of the tripping electrode 5, second insulation fixing plate
1-2 is provided with slotted eye 1-250 and fastener；
Increase sparking electrode 7, the sparking electrode piece 2 conduct between the sparking electrode piece 2 and the insulation ring plate 3
Extraction electrode, the tripping electrode 5 is circular tripping electrode, the circular tripping electrode diameter and the MOV chips diameter phase
Together, the circular tripping electrode is axially arranged with leading foot 510；The axial lead pin 510 is through second insulation fixing plate
The slotted eye 1-250 of 1-2 is passed.
The first insulation fixing plate 1-1, sparking electrode piece 2, sparking electrode 7, insulate ring plate 3, MOV chips 4, electricity of threading off
Pole 5, the second insulation fixing plate 1-2, sequential wears the through hole and described first for penetrating the insulation fixing plate 1-2 by screw
The screw of insulation fixing plate 1-1, by the first insulation fixing plate 1-1, sparking electrode piece 2, sparking electrode 7, insulate ring plate 3,
MOV chips 4, tripping electrode 5, the second insulation fixing plate 1-2 is sequentially fixed.It should be noted that in embodiment, only making
The sparking electrode piece 2 and the electric power receiving surface for being axially arranged with leading foot 510 of the circular tripping electrode used for extraction electrode are outside
Exposed, remaining is sealed between the first insulation fixing plate 1-1 and the second insulation fixing plate 1-2.
Embodiment 3
The present embodiment is with the difference of embodiment 1 and embodiment 2：The leading foot 520 of the tripping electrode 5 is set
For radial direction is drawn, and extend, to use the FDMOV components with atmospherical discharges in PCB.
As shown in figure 4, for the embodiment of the present invention 1, embodiment 2, embodiment 3 equivalent circuit diagram.
Embodiment 4
The present invention provides a kind of another embodiment of the compound MOV components with discharging structure, as shown in figure 5, including
The first insulation fixing plate 1-1, the first tripping electrode piece 5, the 4, first insulation of MOV chips ring plate 31, sparking electrode piece
2nd, the second insulation ring plate 32, the 2nd MOV chips 41, the second tripping electrode piece 51, insulation fixing plate 1-2 and fastener.
The sparking electrode piece 2 includes upper surface and bottom surface, and the sparking electrode piece 2 is circular discharge electrode slice, institute
State circular discharge electrode slice and be provided with extraction electrode 21.
The first tripping electrode piece 5 is provided with parallel extraction electrode 530；The second tripping electrode piece 51 is provided with flat
Row extraction electrode 540；
The first insulation fixing plate 1-1, the first tripping electrode piece 5, MOV chips 4, first insulate ring plate 31, put
The insulation of electric electrode slice 2, second ring plate 32, the 2nd MOV chips 41, the second tripping electrode piece 51, the second insulation fixing plate 1-2 are sequentially
Arrangement, the screw of through hole and the first insulation fixing plate 1-1 for penetrating the second insulation fixing plate 1-2 is worn by screw, will
The first insulation fixing plate 1-1, the first tripping electrode piece 5, the 4, first insulation of MOV chips ring plate 31, sparking electrode piece
2nd, the second insulation ring plate 32, the 2nd MOV chips 41, the second tripping electrode piece 51, the second insulation fixing plate 1-2 are sequentially fixed；Shape
Into differential mode protection structure.
As shown in fig. 6, being the present embodiment differential mode protection structure equivalent circuit diagram.
Embodiment 5
The present invention provides a kind of another embodiment of the compound MOV components with discharging structure, as shown in fig. 7, comprises
First sparking electrode piece 2-1, the first insulation ring plate 31, a MOV chips 41, tripping electrode piece 5, the 2nd MOV chips 42, second
Insulation ring plate 32, the second sparking electrode piece 2-2 and fastener；
The sparking electrode piece is rectangular discharge electrode slice, the first sparking electrode piece 2-1 or the second sparking electrode piece
2-2 sets through hole, and the second sparking electrode piece 2-2 or described first sparking electrode pieces 2-1 sets screw.
The first sparking electrode piece 2-1, the first insulation ring plate 31, a MOV chips 41, tripping electrode piece 5, second
The insulation of MOV chips 42, second ring plate 32, the second sparking electrode piece 2-2 sequentials, are worn by screw and penetrate the second electric discharge electricity
The screw or through hole of the through hole or screw of pole piece 2-2 and the first sparking electrode piece 2-1, by the first sparking electrode piece 2-
1st, the first insulation ring plate 31, a MOV chips 41, tripping electrode piece 5, the 2nd MOV chips the 42, second insulation ring plate 32, second
Sparking electrode piece 2-2 is sequentially fixed, and forms two groups of paralleling model structures.
As shown in figure 8, be two groups of equivalent circuit diagrams of paralleling model of the present embodiment, when the fastener for it is nonmetallic when or
Consolidate in first insulation that is respectively arranged below of the top of the second sparking electrode piece 2-2 and the first sparking electrode piece 2-1
Fixed board and the second insulation fixing plate so that the paralleling model structure is converted to series model structure.
Embodiment 6
The present invention provides a kind of another embodiment of the compound MOV components with discharging structure, as shown in figure 9, including
Bottom electrode clamping plate 8, a MOV chips 41, tripping electrode piece 5, the 2nd MOV chips 42, Top electrode clamping plate 6, insulation ring plate 3, put
Electric electrode slice 2, insulation fixing plate 1 and fastener.
Described Top electrode clamping plate, bottom electrode cleat shapes are identical, and the Top electrode clamping plate, the corner of bottom electrode clamping plate set
Through hole or screw are equipped with, the bottom electrode clamping plate is additionally provided with extraction electrode 800.
Described bottom electrode clamping plate 8, a MOV chips 41, tripping electrode piece 5, the 2nd MOV chips 42, Top electrode clamping plate
6th, insulation ring plate 3, sparking electrode piece 2, the sequential of insulation fixing plate 1, the through hole for penetrating the bottom electrode clamping plate is worn by screw
Or the through hole or screw of screw and Top electrode clamping plate, by the bottom electrode clamping plate 8, a MOV chips 41, tripping electrode piece 5,
Two MOV chips 42, Top electrode clamping plate 6, insulation ring plate 3, sparking electrode piece 2, insulation fixing plate 1 are sequentially fastened, and are formed and connected
FDMOV modular constructions.As shown in Figure 10, it is the equivalent circuit diagram of the present embodiment and series model.
Preferably, the insulation fixing plate, the tripping electrode, the sparking electrode piece, the electrode clamping plate set on demand
There are the through hole or screw for communicating, the fastener is metal or nonmetallic rivet or screw, and institute is fixed by the fastener
State compound MOV components.
Preferably, the insulation ring plate thickness is 0.01~5mm, a diameter of 5~40mm of center ring hole, external diameter is 7~
60mm, the material of the insulation ring plate is polytetrafluoroethylene, micarex, fish paper, epoxy plate, alumina plate, carborundum plate, pottery
At least one or several combination in porcelain plate.
Preferably, also including being coated on the insulating barrier of the FDMOV components outer layer, the insulating barrier is encapsulated using epoxy powder
Or phenolic resin encapsulating.
Preferably, the FDMOV components also include insulation box body, and the insulation box body passes through insulation encapsulated glue embedding.
Preferably, the sparking electrode piece material is one or more in copper, aluminium, iron nickel, siderochrome, ferrimanganic, carbon, graphite
Combination；Insulation fixing plate material be epoxy, Fen Chuo, red cardboard, micarex, plastic plate, alumina plate, carborundum, quartz plate,
The combination of one or more in ceramic wafer.
It is provided by the present invention that a kind of compound MOV components with discharging structure are provided, work electricity is not carried when using
Pressure, with without Leakage Current, long lifespan, reliability is high, be easy to processing, it is cost-effective the characteristics of, all components are carried out cold
After processing, welded without heating, it is to avoid fire damage, simple and fast is installed, be adapted to mechanization, it is with low cost, with great
Economic use value.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of compound MOV components with discharging structure, it is characterised in that：Including insulation fixing plate, tripping electrode, successively
It is located in sparking electrode piece, insulation ring plate, MOV chips, the insulation between the insulation fixing plate and the tripping electrode
Fixed plate and the tripping electrode are fixed by fastener.
2. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：Including electric discharge
Electrode, the sparking electrode is located between the sparking electrode piece and the insulation ring plate, and the insulation fixing plate includes first
Insulation fixing plate and the second insulation fixing plate, second insulation fixing plate is located at tripping electrode top, the dropout electricity
Pole is axially arranged with leading foot；Or, the leading foot of the tripping electrode is radially drawn and is extended.
3. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：The insulation
Fixed plate includes the first insulation fixing plate and the second insulation fixing plate, and the MOV chips include a MOV chips and the 2nd MOV
Chip, the tripping electrode piece includes the first tripping electrode piece and the second tripping electrode piece, and the insulation ring plate includes that first is exhausted
Edge ring plate and the second insulation ring plate；First insulation fixing plate, the first tripping electrode piece, a MOV chips, the first dead ring
Piece, sparking electrode piece, the second insulation ring plate, the 2nd MOV chips, the second tripping electrode piece, insulation fixing plate sequential simultaneously lead to
The fastener fastening is crossed, differential mode protection circuit structure is equivalent to.
4. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：The electric discharge
Electrode slice includes the first sparking electrode piece and the second sparking electrode piece, and the insulation ring plate is exhausted including the first insulation ring plate and second
Edge ring plate, the MOV chips include a MOV chips and the 2nd MOV chips；The first sparking electrode piece, the first dead ring
Piece, a MOV chips, tripping electrode piece, the 2nd MOV chips, the second insulation ring plate, the second sparking electrode piece sequential simultaneously lead to
The fastener fastening is crossed, paralleling model circuit structure is equivalent to.
5. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：Including electrode
Clamping plate, the electrode clamping plate includes bottom electrode clamping plate and Top electrode clamping plate, and the MOV chips include a MOV chips and second
MOV chips；The bottom electrode clamping plate, a MOV chips, tripping electrode piece, the 2nd MOV chips, Top electrode clamping plate, dead ring
Piece, sparking electrode piece, insulation fixing plate sequential are simultaneously fastened by the fastener, are equivalent to and series model circuit knot
Structure.
6. a kind of with the compound of atmospherical discharges according to any one in claim 1-5
MOV components, it is characterised in that：The insulation fixing plate, the tripping electrode, the sparking electrode piece, the electrode holder
Plate is provided with the through hole or screw for communicating on demand, and the fastener is metal or nonmetallic rivet or screw, by the fastening
Part fixes the compound MOV components.
7. a kind of compound MOV components with discharging structure according to claim 2, it is characterised in that：It is described to put
Electrode is conductive material, and the conductive material is the group of one or more in copper, aluminium, iron nickel, siderochrome, ferrimanganic, carbon, graphite
Close.
8. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：The insulation
Ring plate thickness is 0.01~5mm, and a diameter of 5~40mm of center ring hole, external diameter is 7~60mm, and the material of the insulation ring plate is
It is at least one or several in polytetrafluoroethylene, micarex, fish paper, epoxy plate, alumina plate, carborundum plate, ceramic wafer
Combination.
9. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：Also include bag
The insulating barrier of the compound MOV components outer layer is overlayed on, the insulating barrier is encapsulated or phenolic resin encapsulating using epoxy powder；It is described
Compound MOV components also include insulation box body, and the insulation box body passes through insulation encapsulated glue embedding.
10. a kind of compound MOV components with discharging structure according to claim 1, it is characterised in that：The electric discharge
Electrode slice material is the combination of one or more in copper, aluminium, iron nickel, siderochrome, ferrimanganic, carbon, graphite；Insulation fixing plate material is
In epoxy, Fen Chuo, red cardboard, micarex, plastic plate, alumina plate, carborundum, quartz plate, ceramic wafer one or more
Combination.
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| CN201710031497.7A CN106782957B (en) | 2017-01-17 | 2017-01-17 | A kind of compound MOV component with discharging structure |
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| CN110189878A (en) * | 2018-04-11 | 2019-08-30 | 谭乔文 | A kind of surge protector MOV chip and preparation method thereof |
| CN110783906A (en) * | 2018-07-26 | 2020-02-11 | Ripd知识产权发展有限公司 | Surge protection device, circuit, module and system comprising surge protection device, circuit and module |
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| WO2018152756A1 (en) * | 2017-02-21 | 2018-08-30 | 隆科电子(惠阳)有限公司 | Mov assembly having insulating bearing plate structure |
| CN107342145A (en) * | 2017-07-10 | 2017-11-10 | 隆科电子(惠阳)有限公司 | A kind of compound MOV for inserting GDT |
| CN110189878A (en) * | 2018-04-11 | 2019-08-30 | 谭乔文 | A kind of surge protector MOV chip and preparation method thereof |
| CN110783906A (en) * | 2018-07-26 | 2020-02-11 | Ripd知识产权发展有限公司 | Surge protection device, circuit, module and system comprising surge protection device, circuit and module |
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| CN106782957B (en) | 2019-05-17 |
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