CN2146090Y - Universal flyback transformer - Google Patents
Universal flyback transformer Download PDFInfo
- Publication number
- CN2146090Y CN2146090Y CN 92244292 CN92244292U CN2146090Y CN 2146090 Y CN2146090 Y CN 2146090Y CN 92244292 CN92244292 CN 92244292 CN 92244292 U CN92244292 U CN 92244292U CN 2146090 Y CN2146090 Y CN 2146090Y
- Authority
- CN
- China
- Prior art keywords
- voltage
- model
- utility
- flyback transformer
- variable rheostat
- 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
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- Details Of Television Scanning (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a flyback transformer for color television receiver, which is composed of an outer housing, high/low voltage coils, a plate cap, etc. The high-voltage coil is connected with a voltage doubler rectifier circuit. The utility model is characterized in that the flyback transformer is connected with a focus variable rheostat through the mode of tapping from the voltage doubler rectifier circuit to form an integrated product. During working, the tapped voltage passes through the focus variable rheostat of the flyback transformer to provide focus voltage and acceleration voltage for a kinescope. The utility model has the advantages of compact and reasonable structure, convenient installation and operation, high versatility, low cost, etc.
Description
The utility model relates to a kind of television set assembly, particularly a kind of kickback transformer that is used for color TV set.
Color television set belongs to a kind of special high-voltage pulse power transformer with kickback transformer (being called for short FBT), is the cardiac component of color television set.Its main effect is to utilize the line scanning retrace interval to boost at the formed flyback inverse peak voltage of line output valve collector electrode, thereby obtains the needed anode voltage of picture tube work, focus voltage and accelerating voltage.Simultaneously, kickback transformer also provide looking in the television set put, in put, circuits needed such as decoding and sound accompaniment various in, low pressure.Existing kickback transformer product all is made up of shell, high-tension coil, low-voltage coil, anode cap etc.As comparatively advanced at present correlation technique, FBT product as JVC series, it has structurally adopted the mode of voltage multiplying rectifier, promptly on kickback transformer inner high voltage coil, be equipped with a voltage doubling rectifing circuit that constitutes by a plurality of diodes and capacitor etc., the output of described voltage doubling rectifing circuit is introduced on the focus variable rheostat of separate type again, and then obtains required anode high voltage and focus voltage and the accelerating voltage of picture tube.Adopt its high-tension coil of FBT product of voltage doubling rectifing circuit as long as just can obtain higher voltage, the improvement of certain degree is arranged around the formula like product than three sections, four sections groove of routine on electrical property with the less number of turn.But,, on mounting process, increased difficulty, and improved the cost of complete machine because kickback transformer and focus variable rheostat are the separate type installations in the prior art for complete machine.In addition, the kind of the FBT product of said structure is single, only is only applicable to the color television set of JVC type, then can not be general for the color television set of other series model.
The purpose of this utility model is the product of said structure is improved, and then the universal kickback transformer that a kind of simple and reasonable, easy to install, highly versatile is provided and reduces cost.
In order to realize the foregoing invention purpose, technical solution of the present utility model is the mode by tap from voltage doubling rectifing circuit, and kickback transformer and focus variable rheostat even are fitted together, and constitutes incorporate product.Utilize the voltage of being extracted out to provide focus voltage and accelerating voltage in the course of work for picture tube by the incidental focus variable rheostat of kickback transformer self, can reduce the requirement of kickback transformer like this to the withstand voltage and dielectric strength of focus variable rheostat, make the FBT product structurally compact more, reasonable, use and install more conveniently, also reduced simultaneously the cost of product greatly.
Below with reference to accompanying drawing the utility model is done to describe further.
Accompanying drawing 1 is the electrical schematic diagram of a kind of embodiment of the utility model.
Accompanying drawing 2 is structural representations of this embodiment.
As shown in the figure, this universal kickback transformer is made up of high-tension coil, low-voltage coil, shell 1, anode cap 2 and low pressure lead-out wire terminal 3 etc., is connected with one by diode D on high-tension coil
1, D
2, D
3, D
4, D
5, capacitor C
2, C
3And resistance R
2The voltage doubling rectifing circuit 4 that constitutes, the output of voltage doubling rectifing circuit inserts anode cap 2 by positive wire 10.The technological improvement point that the utility model is done is with kickback transformer and focus variable rheostat W
1Connect dress and be one, focus variable rheostat W
1Voltage draw by half multiplication of voltage point A in the voltage doubling rectifing circuit 4.Potentiometer W among Fig. 1
2Be serially connected with focus variable rheostat W
1Under, be used to provide the screen accelerating voltage.R
1And C
1The tuning circuit of forming 5 is eliminated circuit for ring, setting by this circuit can be reduced to the ring ratio of FBT about 2% (this ratio is minimum in the present similar products at home and abroad), thereby improved reliability of products and consistency, guaranteed the clear and stable of colour TV picture.Label 6 is the magnetic core card among Fig. 2; 7 is the gap silk; 8 is the UYF magnetic core; 9 is anode sheath; 10 is positive wire; 11 for focusing on lead; 12 for focusing on sheath; 13 is the screen lead; 14 is potentiometer.
In the utility model, because with focus variable rheostat W
1, multiplication of voltage piece 4 and high-low pressure skeleton etc. carried out organic combination again, makes the FBT product have universal characteristics.Only need in the production process can produce such as multi-form kickback transformers such as JVC series, Sanyo's series, M μ series, Toshiba's series, Sharp's series, Panasonic's series and full contact row by changing different low pressure skeletons.Product structure described in the utility model is simple, superior performance, has significantly economic benefit and social benefit, can be widely used in the product of large-screen receiver and classes such as high definition, high resolution display.
Claims (1)
- A kind of kickback transformer that is used for color TV set is made up of high-tension coil, low-voltage coil, shell (1), anode cap (2) and low pressure lead-out wire terminal (3) etc., is connected with one by diode D on high-tension coil 1～D 5, capacitor C 2, C 3And resistance R 2The output of voltage doubling rectifing circuit (4) voltage doubling rectifing circuit that constitutes inserts anode cap (2), it is characterized in that kickback transformer and focus variable rheostat W 1Connect dress and be one, focus variable rheostat W 1Voltage draw by half multiplication of voltage point A in the voltage doubling rectifing circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244292 CN2146090Y (en) | 1992-12-08 | 1992-12-08 | Universal flyback transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244292 CN2146090Y (en) | 1992-12-08 | 1992-12-08 | Universal flyback transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2146090Y true CN2146090Y (en) | 1993-11-10 |
Family
ID=33783591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92244292 Expired - Fee Related CN2146090Y (en) | 1992-12-08 | 1992-12-08 | Universal flyback transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2146090Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083142C (en) * | 1994-10-31 | 2002-04-17 | 日本胜利株式会社 | Flyback transformer device |
-
1992
- 1992-12-08 CN CN 92244292 patent/CN2146090Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083142C (en) * | 1994-10-31 | 2002-04-17 | 日本胜利株式会社 | Flyback transformer device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |