CN2739787Y - Field controller for colour picture tube - Google Patents
Field controller for colour picture tube Download PDFInfo
- Publication number
- CN2739787Y CN2739787Y CN 200420042108 CN200420042108U CN2739787Y CN 2739787 Y CN2739787 Y CN 2739787Y CN 200420042108 CN200420042108 CN 200420042108 CN 200420042108 U CN200420042108 U CN 200420042108U CN 2739787 Y CN2739787 Y CN 2739787Y
- Authority
- CN
- China
- Prior art keywords
- picture tube
- field controller
- asymmetric
- limit
- color picture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
The utility model discloses a field controller for color picture tube comprising a rectangular plane. The rectangular plane is provided with symmetric edges and asymmetric edges. An opening is arranged on the first asymmetric edge, the junction of the second asymmetric edge and the symmetric edges are provided with chamfers, and the geometric centre of the rectangular plane is provided with a circular hole whose bore diameter is equal to the electron beam of a convergence cover. The utility model has the advantages of simple process and good matching with a 54cmfs color picture tube, and therefore, the problem of the coma aberration is solved.
Description
One, technical field
The utility model relates to a kind of field controller of color picture tube, particularly a kind of field controller that is complementary with the super flat panel extra heavy pipe of 54cm footpath color picture tube.
Two, background technology
The field controller is the interior part of a pipe of color picture tube, be installed in the convergence cap of electron gun, its role is to control the rear portion leakage magnetic flux of deflecting coil, the deflection sensitivity of the middle relatively bundle of both sides bundle is changed, thus the coma aberration on the correcting color picture tube picture.Usually auto-convergence yi word pattern color picture tube all produces coma aberration, and most economical solution is for being provided with a controller in picture tube.Yet according to kind, size and manufacturing firm's difference of color picture tube, the planform and the size of a controller are also far from each other.
Three, technology contents
The purpose of this utility model is to overcome the shortcoming that above-mentioned prior art can not satisfy new type colorful picture tube needs, provides a kind of physical dimension uniqueness, technology to realize easy field controller, and the problem of coma aberration is resolved.
To achieve the above object of the invention, the technical solution of the utility model is: the first asymmetric limit is provided with opening, the junction on the second asymmetric limit and symmetrical limit is provided with chamfering, and the geometric center position of controller part on the scene is provided with the circular hole that equates with the electron beam aperture of convergence cap.
The utility model also has following characteristics: a material that controller adopted is the iron-nickel alloy band with high magnetic property.
Opening and the chamfering of the utility model by being provided with respectively on the asymmetric limit effectively proofreaied and correct the coma aberration that is produced on the color picture tube picture, thereby improved production efficiency greatly.
Four, description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model working state schematic representation.
Five, embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.
With reference to Fig. 1, Fig. 2, the utility model comprises a rectangle plane 1, rectangle plane 1 is provided with symmetrical limit 2, also be respectively arranged with the first asymmetric limit 3 and the second asymmetric limit 4 at rectangle plane 1, the first asymmetric limit 3 is provided with opening 5, the second asymmetric limit 4 is provided with chamfering 6 with the junction on symmetrical limit 2, is provided with the circular hole that equates with the electron beam aperture of convergence cap 7 in its geometric center position.
Operation principle of the present utility model is as follows: two lateral opening places that the field controller are welded on convergence cap 7, the horizontal geometric center of field controller overlaps with the X-axis of convergence cap 7, circular hole 8 circular arcs and convergence cap 7 two are lateral opening concentric, the vertical centre of field controller overlaps with the Y-axis of convergence cap 7, carries out the correction of coma aberration.
The utility model technology realizes easy, has realized good coupling with the 54cmfs color picture tube, thereby has solved the problem of coma aberration.
Claims (2)
- A color picture tube the field controller, comprise rectangle plane (1), rectangle plane (1) is provided with symmetrical limit (2), the first asymmetric limit (3) and the second asymmetric limit (4), it is characterized in that: the first asymmetric limit (3) is provided with opening (5), the second asymmetric limit (4) is provided with chamfering (6) with the junction on symmetrical limit (2), is provided with the circular hole that equates with the electron beam aperture of convergence cap (7) in its geometric center position.
- A kind of color picture tube according to claim 1 the field controller, it is characterized in that: the material that it adopted is the iron-nickel alloy band with high magnetic property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420042108 CN2739787Y (en) | 2004-06-29 | 2004-06-29 | Field controller for colour picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420042108 CN2739787Y (en) | 2004-06-29 | 2004-06-29 | Field controller for colour picture tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739787Y true CN2739787Y (en) | 2005-11-09 |
Family
ID=35354850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420042108 Expired - Fee Related CN2739787Y (en) | 2004-06-29 | 2004-06-29 | Field controller for colour picture tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739787Y (en) |
-
2004
- 2004-06-29 CN CN 200420042108 patent/CN2739787Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 Termination date: 20130629 |