CN101051560A - High frequency high voltage step-up transformer - Google Patents
High frequency high voltage step-up transformer Download PDFInfo
- Publication number
- CN101051560A CN101051560A CN 200710019799 CN200710019799A CN101051560A CN 101051560 A CN101051560 A CN 101051560A CN 200710019799 CN200710019799 CN 200710019799 CN 200710019799 A CN200710019799 A CN 200710019799A CN 101051560 A CN101051560 A CN 101051560A
- Authority
- CN
- China
- Prior art keywords
- transformer
- high voltage
- magnetic core
- voltage step
- high frequency
- 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.)
- Pending
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Inverter Devices (AREA)
Abstract
The characters of the improved transformer are that magnetic core of transformer is in U shaped structure; coils in high voltage and in low voltage are individually arranged in parallel, and sheathed on two feet of U shaped magnetic core respectively. The invention increases positions of slot for winding coils, reduces voltage between turns of secondary coil in high voltage so as to realize large power, and raise utilization ratio of coil framework. Especially, when the secondary coil in high voltage is divided into two coaxial windings with same turns; one transformer can realizes differential driving luminous tube to make structure of inverter be simple, in good reliability and low cost. The disclosed transformer is applicable to liquid crystal screen of backlight source by using CCFL or EEFL luminous tube, as well as other display products for example display screen of advertising lamp box by using CCFL or EEFL luminous tube.
Description
Skill this area
The invention relates to the improvement of electronics, relate in particular to the high frequency high voltage step-up transformer that a kind of high-low pressure winding branch is arranged with high frequency high voltage step-up transformer.
Technical background
High frequency high voltage step-up transformer (abbreviation transformer), for example supply with liquid crystal display screen CCFL backlight or EEFL fluorescent tube with high-frequency and high-voltage (alternating current inverter step-up transformer for example 〉=1500V), its basic structure is: the primary and secondary winding technique is on an axial wire frame skeleton, form single output secondary winding, by primary coil 5 high-frequency signal of input is converted to magnetic energy, send secondary coil 3 to by magnetic core 1.1 and 1.2.The H.V. step up transformer of this secondary single winding, because secondary voltage is higher, coil windings is born the voltage height, not only wave enamel is had relatively high expectations, and the reliability of coil is low easy breakdown damage.For reducing high pressure winding coil turn-to-turn voltage, the improvement employing is provided with some insulation gaps and divides groove 4 on secondary winding 3, carries out the coiling of branch groove to reduce voltage (Fig. 2) between coil turn; Though divide the groove coiling can effectively reduce voltage between coil turn, improve the coil reliability, when transformer efficiency was big, the skeleton utilance is low, and was uneconomical.In same axial this structure, guarantee primary and secondary safety isolation, can increase volume of transformer (axially lengthening).For improving the utilance of skeleton, and effectively reduce voltage between coil turn, also there are two of employings or above transformer to share secondary high pressure, realize the differential driving (lamp tube ends adds phase phasic difference 180 degree voltages respectively) of fluorescent tube, but along with the increase of fluorescent tube quantity, transformer will correspondingly increase, make the inverter overall dimension of forming strengthen, the circuit complexity, manufacturing cost strengthens, and also can cause the inverter reliability to reduce simultaneously.
Content of the present invention
The object of the invention is to overcome above-mentioned prior art deficiency, and a kind of turn-to-turn voltage that can effectively reduce the secondary high pressure coil is provided, and fail safe is good, can improve the high frequency high voltage step-up transformer of skeleton utilance again.
The object of the invention realizes, the main improvement is: the secondary high pressure winding of high frequency high voltage step-up transformer is side by side with elementary low pressure winding separates, be sheathed on respectively on two posts of U type magnetic core, thereby make secondary winding that enough branch groove groove positions be arranged, can reduce the turn-to-turn voltage of secondary high pressure coil, and the utilance that improves coil rack, realize this patent purpose.Specifically, high frequency high voltage step-up transformer of the present invention comprises magnetic core and outer sheathed high and low pressure winding, it is characterized in that said magnetic core is U type structure, and the high and low pressure winding is side by side separately, is sheathed on respectively on two posts of U type magnetic core.
A kind of better structure of the present invention is, the secondary high pressure winding is divided into coaxial 2, and according to the circuit needs, 2 umber of turns can be identical, also can be different, and be connected into a winding on the line and use.Wherein be all mutually with 2 umber of turns especially, can realize differential driving by a transformer to fluorescent tube, after the increase of fluorescent tube quantity, power requirement increase, need not to increase number transformer, only need to use larger sized transformer, can reduce number transformer, improve the reliability of inverter.
In addition, for improving the applicability of transformer, the present invention can also also be divided into the elementary winding of transformer coaxial 2 windings, and 2 umber of turns can be identical, also can be different, can be used for respectively being operated in recommend, in the circuit of half-bridge, asymmetrical half-bridge, full-bridge topologies.
High frequency high voltage step-up transformer of the present invention, because high voltage secondary winding and elementary winding are separated side by side, divide and be located on two pin of U type magnetic core, effectively increased branch groove coiling groove position, can reduce the turn-to-turn voltage of secondary high pressure coil, not only can reduce insulating requirements, and can realize high-powerly, and can improve the utilance of coil rack enamelled wire.Especially secondary high pressure winding branch is set as coaxial 2 identical coils of the number of turn, can realizes the differential driving of fluorescent tube on same transformer, can reduce number transformer only needs one, make inverter structure simple, can dwindle the inverter volume, good reliability, cost is low.High frequency high voltage step-up transformer of the present invention not only can be used to light liquid crystal display screen CCFL backlight or EEFL fluorescent tube, but also can be used for CCFL or EEFL fluorescent tube on some other demonstration product as light source, for example the advertising lamp box display screen.
Below in conjunction with three embodiments, further specify the present invention, but the embodiment concrete structure should not be construed as limitation of the invention, some show the change that you easily see In the view of the technical staff, still belong to this scope of the invention.
Description of drawings
Fig. 1 is the single output secondary winding of a prior art transformer circuit schematic diagram.
Fig. 2 divides groove winding structure schematic diagram for single output secondary winding transformer.
Fig. 3 is transformer the 1st embodiment circuit theory diagrams of the present invention.
Fig. 4 is Fig. 3 structural representation.
Fig. 5 is transformer the 2nd embodiment circuit theory diagrams of the present invention.
Fig. 6 is Fig. 5 structural representation.
Fig. 7 is transformer the 3rd embodiment circuit theory diagrams of the present invention.
Fig. 8 is Fig. 7 structural representation.
Embodiment
Embodiment 1: referring to Fig. 3,4, high frequency high voltage step-up transformer of the present invention, comprise 2 can be involutory U type magnetic core 6.1,6.2, be divided into primary coil skeleton 2.1 and secondary coil skeleton 2.2 on U type magnetic core two posts, primary coil skeleton 2.1 is wound with elementary winding 5 (NP), divides groove to be wound with secondary high pressure winding 3 (NS) on the secondary coil skeleton 2.2.
Embodiment 2: referring to Fig. 5,6, as embodiment 1, divide groove to be wound with 2 secondary winding 3.1 and 3.2 that the number of turn is identical on the secondary coil skeleton 2.2.
Embodiment 3: referring to Fig. 7,8, as embodiment 2, be wound with 2 elementary windings 5.1 and 5.2 that the number of turn is identical on the primary coil skeleton 2.1.
Claims (5)
1, high frequency high voltage step-up transformer comprises magnetic core and outer sheathed high and low pressure winding, it is characterized in that said magnetic core is U type structure, and the high and low pressure winding is side by side separately, is sheathed on respectively on two posts of U type magnetic core.
2,, it is characterized in that secondary winding is coaxial 2 according to the described high frequency high voltage step-up transformer of claim 1.
3,, it is characterized in that 2 umber of turns are identical according to the described high frequency high voltage step-up transformer of claim 2.
4,, it is characterized in that elementary winding is coaxial 2 according to claim 1,2 or 3 described high frequency high voltage step-up transformers.
5,, it is characterized in that 2 umber of turns are identical according to the described high frequency high voltage step-up transformer of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710019799 CN101051560A (en) | 2007-02-07 | 2007-02-07 | High frequency high voltage step-up transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710019799 CN101051560A (en) | 2007-02-07 | 2007-02-07 | High frequency high voltage step-up transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101051560A true CN101051560A (en) | 2007-10-10 |
Family
ID=38782886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710019799 Pending CN101051560A (en) | 2007-02-07 | 2007-02-07 | High frequency high voltage step-up transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101051560A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568783A (en) * | 2012-01-20 | 2012-07-11 | 张家港市华为电子有限公司 | Coil winding structure of large-power push-pull transformer |
| CN104167286A (en) * | 2013-10-30 | 2014-11-26 | 佛山市顺德区尚研电子科技有限公司 | Variable-frequency power transformer |
| CN109616298A (en) * | 2019-01-21 | 2019-04-12 | 江苏华祥电子有限公司 | A kind of high frequency high voltage transformer |
| CN113253078A (en) * | 2021-07-02 | 2021-08-13 | 荣旗工业科技(苏州)股份有限公司 | Skeleton high-voltage testing equipment |
-
2007
- 2007-02-07 CN CN 200710019799 patent/CN101051560A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568783A (en) * | 2012-01-20 | 2012-07-11 | 张家港市华为电子有限公司 | Coil winding structure of large-power push-pull transformer |
| CN104167286A (en) * | 2013-10-30 | 2014-11-26 | 佛山市顺德区尚研电子科技有限公司 | Variable-frequency power transformer |
| CN109616298A (en) * | 2019-01-21 | 2019-04-12 | 江苏华祥电子有限公司 | A kind of high frequency high voltage transformer |
| CN113253078A (en) * | 2021-07-02 | 2021-08-13 | 荣旗工业科技(苏州)股份有限公司 | Skeleton high-voltage testing equipment |
| CN113253078B (en) * | 2021-07-02 | 2021-09-28 | 荣旗工业科技(苏州)股份有限公司 | Skeleton high-voltage testing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100867552B1 (en) | Discharge tube lighting circuit and electronic apparatus | |
| CN101051560A (en) | High frequency high voltage step-up transformer | |
| US7436279B2 (en) | High voltage transformer | |
| CN101908411B (en) | Transformer structure | |
| CN201611607U (en) | Transformer structure | |
| CN201017758Y (en) | High-frequency high voltage booster transformer | |
| JP2008072114A (en) | Method for adjusting mutual inductance and transformer adjusted by the same method | |
| CN101819865B (en) | Combined transformer | |
| JP2004207491A (en) | Pulse transformer and discharge lamp lighting device | |
| CN2842480Y (en) | Lamp tube driving circuit | |
| CN2777899Y (en) | Transformer and multi-lamp tube driving circuit using same | |
| CN201256475Y (en) | Multiple lamp tube driving circuit | |
| CN200972821Y (en) | Improved structure of high-voltage transformer of two high voltage output | |
| JP2005071681A (en) | High voltage transformer and electric-discharge lamp driving circuit using this | |
| CN2715310Y (en) | Transformer and multi-tube driving system using the same | |
| CN203632951U (en) | Self-ballast-type driving connection circuit employing double cold cathode fluorescence lamp tube | |
| CN202145377U (en) | Piezoelectric transformer drive circuit | |
| CN202871534U (en) | Dual output liquid crystal display (LCD) backlight lamp framework | |
| CN101350173B (en) | Backlight driving system for liquid crystal display | |
| CN1988075A (en) | Power transformer combined with balance winding and its application circuit | |
| CN101742789A (en) | Constant power electronic ballast | |
| KR100689989B1 (en) | Apparatus for parallel driving ccfl | |
| CN201489981U (en) | High-frequency inverter transformer for backlight source | |
| CN2802675Y (en) | Converter transformer structure with step-up shunt loading balance | |
| CN102026459B (en) | Drive circuit of cold-cathode fluorescence lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |