CN103401585B - A kind of rotary stepping equalizer and preparation technology thereof - Google Patents
A kind of rotary stepping equalizer and preparation technology thereof Download PDFInfo
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- CN103401585B CN103401585B CN201310357274.1A CN201310357274A CN103401585B CN 103401585 B CN103401585 B CN 103401585B CN 201310357274 A CN201310357274 A CN 201310357274A CN 103401585 B CN103401585 B CN 103401585B
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- printed board
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Abstract
The present invention relates to passive equalizer technical field, specifically a kind of rotary stepping equalizer and preparation technology thereof, comprise bottom printed board, three reed connector assemblies, top rotates printed board, tape spool face gear, end face positioning reed, shell axle sleeve, it is characterized in that described bottom printed board is provided with three reed connector assemblies and equalizer peripheral circuit, printed board top, bottom is provided with top and rotates printed board, the reed of three reed connector assemblies and top rotate the resistance decrement network electrical pickoff contact pads of printed board, top rotates printed board and is provided with tape spool face gear, rotating shaft is provided with bottom tape spool face gear, insert top bottom rotating shaft to rotate in the circular hole of printed board and bottom printed board.The present invention compared with the existing technology, collects 16 kinds of pad values among an equalizer, brings conveniently to the production of equipment and field adjustable; Novel structure of the present invention, multiple functional, Design of Mechanical Structure are reasonable, and convenient processing, can be mass-produced.
Description
[technical field]
The present invention relates to passive equalizer technical field, specifically a kind of rotary stepping equalizer and preparation technology thereof and application.
[background technology]
Passive equalizer conventional in CATV system at present generally can be divided into two kinds:
1. fixed equalizer;
2. type variable equalizer.
Fixed equalizer has that equilibrium value is clear and definite directly perceived, the advantage of numerical stability, but an equalizer can only have an equilibrium value determined, if contain all conventional equilibrium values (such as 0-15dB), will have the equalizer of 16 kinds of different values, this just causes and sometimes can not find required equilibrium value because not having enough standbies when device context is debugged.
Type variable equalizer has the continuously adjustable advantage of equilibrium value, but equilibrium value cannot directly show, just required value must can be obtained by instrument, it is linearly very difficult for wanting to accomplish balanced corresponding cable loss in whole usual range (such as 0-15dB) and keeping good, and its inner carbon film plate is more easy to wear and numerical value may be caused unstable after frequent rotation.
The domestic patent No. is the invention that the patent document of CN101094211 discloses a kind of revolving adjustable stepping equalizer and preparation technology and application, but its part is various, complex structure, process step needed for this equalizer more, working (machining) efficiency is low, can not produce in enormous quantities.
[summary of the invention]
The object of this invention is to provide a kind of rotary stepping equalizer of novel structure, it solve the weak point of fixed equalizer and type variable equalizer and get both strong point, collect 16 kinds of pad values among an equalizer, bring very large convenience to the production of equipment and field adjustable.
For achieving the above object, design a kind of rotary stepping equalizer, comprise: bottom printed board, three reed connector assemblies, top rotates printed board, tape spool face gear, end face positioning reed, shell axle sleeve, it is characterized in that described bottom printed board is provided with three reed connector assemblies, bottom printed board is also provided with equalizer peripheral circuit, printed board top, bottom is provided with top and rotates printed board, three reed connector assembly top leaf and top rotate the resistance decrement network electrical pickoff contact pads of printed board bottom, top rotates printed board top and is provided with tape spool face gear, rotating shaft is provided with bottom tape spool face gear, inserting top bottom rotating shaft rotates in the circular hole offered in the middle part of printed board and bottom printed board, axial end pinion rotation can drive top to rotate printed board and rotate together, rotating shaft top connects rotary handle, axial end gear top is provided with end face positioning reed, the location fit of end face positioning reed and tape spool face gear.
Described bottom printed board is provided with some location holes, and three reed connector assemblies are provided with some locating shafts, and three reed connector assemblies are connected by location hole on locating shaft and bottom printed board.
Three described reed connector assemblies are connected by connector holder, three spring leafs and cover plate, connector holder is provided with some cylindrical locating shafts, three spring leafs are provided with some semicircle location notchs, semicircle location notch coordinates with cylindrical locating shaft, guarantee that three spring leafs are accurately located, three spring leaf outsides are provided with cover plate, and cover plate is provided with some location holes, and described location hole and cylindrical locating shaft are connected.
Described tape spool face gear is provided with alignment pin and locating shaft, be connected with two location hole location fit that top rotates in printed board, be provided with projection bottom end face positioning reed to match with tape spool end-tooth wheel face and locate, end face positioning reed two overhanging angles and enclosure axis put the precision-fit of location notch.
The resistance decrement network that described top rotates printed board bottom is the T network be made up of pure resistance, totally 16 grades of equalizers, arranged by 0-15dB successively, except 0dB, the each shelves equalizer of 0-15dB forms by T-shaped attenuation network, for each attenuation network, its input and output impedance is all 75 Ω, the resistance of two resistance R1 above it is identical, and the resistance of R2 is different from them, for obtaining different attenuations, available following formula calculates: R1=75*(K-1)/(K+1), R2=150*K/(K*K-1), 20lgK=β, β is pad value.
In equalizer peripheral circuit on described bottom printed panel, inductance L 1 and electric capacity C1 connect, electric capacity C1 one end connects inductance coil L, tap one end of inductance coil L connects inductance L 3 one end, inductance L 3 and electric capacity C3, inductance L 2, electric capacity C2 form shunt circuit, inductance L 1 other end is A point, tap one end of inductance L 2 is B point, and the other end of inductance coil L is C point, the other end all ground connection of inductance L 2 and electric capacity C2, inductance L 3 and electric capacity C3 shunt circuit; Three reed A, B, C 3 in the printed board of bottom is corresponding with resistance decrement network electrical pickoff pad A, B, C point that top rotates in printed board, and Elastic Contact, cooperatively interact, form an equalizer from 16 different values of 0-15 dB.
In equalizer peripheral circuit on described bottom printed panel, the series loop resonance of inductance L 1 and electric capacity C1 composition is near 862MHz, in Low ESR; Inductance L 2 and electric capacity C2, inductance L 3 and electric capacity C3 composition shunt circuit also resonance near 862MHz, in high impedance; The acting in conjunction of series loop and shunt circuit, makes when attenuation changes, low side and then change and 862MHz place remains unchanged substantially, defines different slopes and is used for the damage curve of compensating cable.
The unit for electrical property parameters of described equalizer is: in whole bandwidth 5-862MHz, and equilibrium quantity error is within ± 0.25dB, and the flatness after cables simulation is within ± 0.5dB, and the value of adjustment resonant tank, can make equalizer be operated in 5-1000MHz scope.
The installation method of described rotary stepping equalizer, it is characterized in that described installation method step is as follows: first hold each working of plastics successfully, hardware mould, by each parts and printed board machine-shaping, assemble three reed connector assemblies, be fixed and be welded in the printed board of bottom, equalizer peripheral circuit components and parts are also equipped with in bottom printed board, again top is rotated printed board and tape spool face gear is fixed, then in order successively by end face positioning reed, tape spool face gear, bottom printed board loads after in shell axle sleeve fixing, tape spool face gear has rotated printed board and has coordinated fixing with top, bottom printed board has coordinated fixing with three reed connector assemblies, three spring leafs and top rotate the resistance decrement network electrical pickoff contact pads of printed board bottom, when rotary handle, the location fit of end face positioning reed and tape spool face gear, tape spool face gear can be allowed to produce accurate circumferentially gear shift function, each shelves attenuation is drawn by the cabling of bottom printed board, coordinate equalizer peripheral circuit, define the equilibrium value that 16 of 0-15dB are different, pointer on rotary handle targeted by enclosure axis and puts corresponding scale.
The present invention compared with the existing technology, collect 16 kinds of pad values among an equalizer, by rotary handle, just clearly can show and obtain 0-15dB(1dB stepping) or 0-7.5dB(0.5dB stepping) interior required arbitrary pad value, bring very large convenience to the production of equipment and field adjustable; Novel structure of the present invention, multiple functional, volume is little, Design of Mechanical Structure is reasonable, and convenient processing, can be mass-produced; This invention can be applicable to the technical fields such as cable TV, communication and tester.
[accompanying drawing explanation]
Fig. 1 is Total Product structure chart of the present invention;
Fig. 2 is three reed connector assembly installation diagrams in the present invention;
Fig. 3 is the installation diagram of three reed connector assemblies in the present invention and bottom printed board;
Fig. 4 is the installation diagram a that tape spool face gear in the present invention and top rotate printed board;
Fig. 5 is the installation diagram b that tape spool face gear in the present invention and top rotate printed board;
Fig. 6 is the contact pin type equalizer figure in the present invention;
Fig. 7 is that the top in the present invention rotates pcb map;
Fig. 8 is the bottom pcb map in the present invention;
Fig. 9 is electrical schematic diagram of the present invention;
Figure 10 is the equilibrium quantity of the present invention when 0-15dB (1 dB stepping) and frequency response figure;
Figure 11 is the cables simulation figure of the present invention when 0-15dB (1 dB stepping).
In figure: 1. bottom, printed board 2. 3 reed connector assembly 3. cover plate 4. reed 5. top rotates the overhanging angle 21. housing location notch of location hole 2 18. face gear alignment pin 19. face gear locating shaft 20. bottom printed board 6. tape spool face gear 7. end face positioning reed 8. shell axle sleeve 9. reed location hole 1 10. reed location hole 2 11. connector locating shaft 1 12. connector locating shaft 2 13. cover plate location hole 14. bottom printed board location hole 15. in the rotation printed board of printed board locating shaft 16. top in the rotation printed board of location hole 1 17. top;
Specify Fig. 1 as Figure of abstract of the present invention.
[embodiment]
Below in conjunction with accompanying drawing, the invention will be further described, and the structure of this device and principle are very clearly concerning the people of this specialty.
Fig. 1 is Total Product structure chart of the present invention, comprise bottom printed board, three reed connector assemblies, cover plate, reed, top rotation printed board, tape spool face gear, end face positioning reed and shell axle sleeve, when rotary handle, the location fit of end face positioning reed 7 and tape spool face gear 6, can allow tape spool face gear 6 produce accurate circumferentially gear shift function;
Fig. 2 is three reed connector assembly installation diagrams in the present invention, rely on location hole 9 and 10 in reed 4 respectively with locating shaft 11 and 12 precision-fit on connector holder 2, the accurate location of reed can be ensured; By locating shaft 12 secure fit on two holes 13 on cover plate 3 and connector holder 2, the assembly precision of reed 4 can be ensured;
Fig. 3 is the installation diagram of three reed connector assemblies in the present invention and bottom printed board, by two locating shafts 15 on three reed connector holders, accurately be positioned on two location holes 14 of printed board, can guarantee that spring leaf 4 and top rotate the fixed position precision of printed board 5;
Fig. 4 is the installation diagram a that tape spool face gear in the present invention and top rotate printed board, and by the alignment pin 18 on face gear 6 and locating shaft 19, and top rotates location hole 16 and 17 in printed board and precision positioning;
Fig. 5 is the installation diagram b that tape spool face gear in the present invention and top rotate printed board, by the precision-fit of location notch 21 on the overhanging angle 20 of two on end face positioning reed 7 and housing, end face positioning reed 7 can be allowed to rotationally move, ensure the precision of tape spool face gear 6 rotational angle;
Fig. 5 is the contact pin type equalizer figure in the present invention;
Fig. 6 is that the top in the present invention rotates pcb map, and the resistance decrement network of 0-15dB is housed by certain gear shift even angle in the radial direction, and bottom has the electrical pickoff pad of resistance decrement network to draw;
Fig. 7 is the bottom pcb map in the present invention, it is equipped with three reed connector assemblies, plate has cabling draw;
Fig. 8 is electrical schematic diagram of the present invention, its the first half is attenuator, its operation principle is: except 0 dB, the each shelves equalizer of 0-15 dB forms by T-shaped attenuation network, for some attenuation networks, its input and output impedance is all 75 Ω, the resistance of two resistance R1 above it is identical, and the resistance of R2 is different from them, for obtaining different attenuations, available following formula calculates: R1=75*(K-1)/(K+1), R2=150*K/(K*K-1), 20lgK=β.
Wherein β is attenuation.The resistance table listed below can be for reference:
Schematic diagram the latter half is equalizer peripheral circuit, inductance L 1 and electric capacity C1 connect, electric capacity C1 one end connects inductance coil L, tap one end of inductance coil L connects inductance L 3 one end, inductance L 3 and electric capacity C3, inductance L 2, electric capacity C2 form shunt circuit, and inductance L 1 other end is A point, and tap one end of inductance L 2 is B point, the other end of inductance coil L is C point, the other end all ground connection of inductance L 2 and electric capacity C2, inductance L 3 and electric capacity C3 shunt circuit; Three reed A, B, C 3 in the printed board of bottom is corresponding with resistance decrement network electrical pickoff pad A, B, C point that top rotates in printed board, and Elastic Contact, cooperatively interact, form an equalizer from 16 different values of 0-15 dB.
In equalizer peripheral circuit, the series loop resonance of inductance L 1 and electric capacity C1 composition is near 862MHz, in Low ESR; Inductance L 2 and electric capacity C2, inductance L 3 and electric capacity C3 composition shunt circuit also resonance near 862MHz, in high impedance; The acting in conjunction of series loop and shunt circuit, makes when attenuation changes, low side and then change and 862MHz place remains unchanged substantially, defines different slopes and is used for the damage curve of compensating cable.
Printing forme and spring leaf all adopt craft of gilding to reduce contact resistance, and this device clearly indicates obtained differential declines value in cover top portion, and during use, on footstalk, pointer aims at corresponding scale all the time.
The unit for electrical property parameters that the present invention is correlated with is tested, see accompanying drawing 10 and accompanying drawing 11, in whole bandwidth 5-862MHz, equilibrium quantity error is within ± 0.25dB, flatness after cables simulation is within ± 0.5dB, the value of adjustment resonant tank, can make equalizer be operated in 5-1000MHz scope, be better than other equalizer.
The present invention adopts a kind of passive equalizer preparation technology, it can be applicable to the technical fields such as cable TV, communication and tester, especially can be used in CATV (cable TV) network equipment, the signal of telecommunication output and input level done as amplifier, light station and modulator etc. controls, suitable output and input level needed for equipment can be provided in convenient and swift, clear and definite mode intuitively, work with making equipment normal table.
Claims (9)
1. a rotary stepping equalizer, comprise: bottom printed board, three reed connector assemblies, top rotates printed board, tape spool face gear, end face positioning reed, shell axle sleeve, it is characterized in that described bottom printed board is provided with three reed connector assemblies, bottom printed board is also provided with equalizer peripheral circuit, printed board top, bottom is provided with top and rotates printed board, three reed connector assembly top leaf and top rotate the resistance decrement network electrical pickoff contact pads of printed board bottom, top rotates printed board top and is provided with tape spool face gear, rotating shaft is provided with bottom tape spool face gear, inserting top bottom rotating shaft rotates in the circular hole offered in the middle part of printed board and bottom printed board, axial end pinion rotation can drive top to rotate printed board and rotate together, rotating shaft top connects rotary handle, axial end gear top is provided with end face positioning reed, the location fit of end face positioning reed and tape spool face gear.
2. a kind of rotary stepping equalizer as claimed in claim 1, it is characterized in that described bottom printed board is provided with some location holes, three reed connector assemblies are provided with some locating shafts, and three reed connector assemblies are connected by location hole on locating shaft and bottom printed board.
3. a kind of rotary stepping equalizer as claimed in claim 1, it is characterized in that three described reed connector assemblies are connected by connector holder, three spring leafs and cover plate, connector holder is provided with some cylindrical locating shafts, three spring leafs are provided with some semicircle location notchs, semicircle location notch coordinates with cylindrical locating shaft, and guarantee that three spring leafs are accurately located, three spring leaf outsides are provided with cover plate, cover plate is provided with some location holes, and described location hole and cylindrical locating shaft are connected.
4. a kind of rotary stepping equalizer as claimed in claim 1, it is characterized in that described tape spool face gear is provided with alignment pin and locating shaft, be connected with two location hole location fit that top rotates in printed board, be provided with projection bottom end face positioning reed to match with tape spool end-tooth wheel face and locate, end face positioning reed two overhanging angles and enclosure axis put the precision-fit of location notch.
5. a kind of rotary stepping equalizer as claimed in claim 1, it is characterized in that the resistance decrement network that described top rotates printed board bottom is the T network be made up of pure resistance, totally 16 grades of equalizers, arranged by 0-15dB successively, except 0dB, the each shelves equalizer of 0-15dB forms by T-shaped attenuation network, for each attenuation network, its input and output impedance is all 75 Ω, the resistance of two resistance R1 above it is identical, and the resistance of R2 is different from them, for obtaining different attenuations, available following formula calculates: R1=75* (K-1)/(K+1), R2=150*K/ (K*K-1), 20lgK=β, β is pad value, K refers to the electric current that attenuator produces, the ratio of voltage or power attenuation.
6. a kind of rotary stepping equalizer as claimed in claim 1, it is characterized in that in the equalizer peripheral circuit in described bottom printed board, inductance L 1 and electric capacity C1 connect, electric capacity C1 one end connects inductance coil L, tap one end of inductance coil L connects inductance L 3 one end, inductance L 3 and electric capacity C3, inductance L 2, electric capacity C2 form shunt circuit, inductance L 1 other end is A point, tap one end of inductance L 2 is B point, the other end of inductance coil L is C point, the other end all ground connection of inductance L 2 and electric capacity C2, inductance L 3 and electric capacity C3 shunt circuit; Three reed A, B, C 3 in the printed board of bottom is corresponding with resistance decrement network electrical pickoff pad A, B, C point that top rotates in printed board, and Elastic Contact, cooperatively interact, form an equalizer from 16 different values of 0-15dB.
7. a kind of rotary stepping equalizer as claimed in claim 1, is characterized in that the series loop resonance of inductance L 1 and electric capacity C1 composition in the equalizer peripheral circuit in described bottom printed board is near 862MHz, in Low ESR; Inductance L 2 and electric capacity C2, inductance L 3 and electric capacity C3 composition shunt circuit also resonance near 862MHz, in high impedance; The acting in conjunction of series loop and shunt circuit, makes when attenuation changes, Low ESR and then change and 862MHz place remains unchanged, and defines different slopes and is used for the damage curve of compensating cable.
8. a kind of rotary stepping equalizer as claimed in claim 1, it is characterized in that the unit for electrical property parameters of described equalizer is: in whole bandwidth 5-862MHz, equilibrium quantity error is within ± 0.25dB, flatness after cables simulation is within ± 0.5dB, the value of adjustment resonant tank, can make equalizer be operated in 5-1000MHz scope.
9. the method that rotary stepping equalizer according to claim 1 is installed, it is characterized in that described installation method step is as follows: first hold each working of plastics successfully, hardware mould, by each parts and printed board machine-shaping, assemble three reed connector assemblies, be fixed and be welded in the printed board of bottom, equalizer peripheral circuit components and parts are also equipped with in bottom printed board, again top is rotated printed board and tape spool face gear is fixed, then in order successively by end face positioning reed, tape spool face gear, bottom printed board loads after in shell axle sleeve fixing, tape spool face gear has rotated printed board and has coordinated fixing with top, bottom printed board has coordinated fixing with three reed connector assemblies, three spring leafs and top rotate the resistance decrement network electrical pickoff contact pads of printed board bottom, when rotary handle, the location fit of end face positioning reed and tape spool face gear, tape spool face gear can be allowed to produce accurate circumferentially gear shift function, each shelves attenuation is drawn by the cabling of bottom printed board, coordinate equalizer peripheral circuit, define the equilibrium value that 16 of 0-15dB are different, pointer on rotary handle targeted by enclosure axis and puts corresponding scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310357274.1A CN103401585B (en) | 2013-08-16 | 2013-08-16 | A kind of rotary stepping equalizer and preparation technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310357274.1A CN103401585B (en) | 2013-08-16 | 2013-08-16 | A kind of rotary stepping equalizer and preparation technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103401585A CN103401585A (en) | 2013-11-20 |
| CN103401585B true CN103401585B (en) | 2015-09-23 |
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| CN201310357274.1A Expired - Fee Related CN103401585B (en) | 2013-08-16 | 2013-08-16 | A kind of rotary stepping equalizer and preparation technology thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094211A (en) * | 2007-07-06 | 2007-12-26 | 田获 | Revolving adjustable stepping equalizer, preparing technique and application |
| CN201130956Y (en) * | 2007-07-06 | 2008-10-08 | 田获 | Rotating adjustable step equalizer |
| CN102446530A (en) * | 2010-10-04 | 2012-05-09 | 索尼公司 | Data detecting device, reproducing device, and data detecting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101055971B1 (en) * | 2005-12-07 | 2011-08-11 | 주식회사 만도 | Electric parking brake |
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2013
- 2013-08-16 CN CN201310357274.1A patent/CN103401585B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094211A (en) * | 2007-07-06 | 2007-12-26 | 田获 | Revolving adjustable stepping equalizer, preparing technique and application |
| CN201130956Y (en) * | 2007-07-06 | 2008-10-08 | 田获 | Rotating adjustable step equalizer |
| CN102446530A (en) * | 2010-10-04 | 2012-05-09 | 索尼公司 | Data detecting device, reproducing device, and data detecting method |
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| CN103401585A (en) | 2013-11-20 |
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