CN2781529Y - Surface adhesive inverse transformer - Google Patents
Surface adhesive inverse transformer Download PDFInfo
- Publication number
- CN2781529Y CN2781529Y CN 200520070663 CN200520070663U CN2781529Y CN 2781529 Y CN2781529 Y CN 2781529Y CN 200520070663 CN200520070663 CN 200520070663 CN 200520070663 U CN200520070663 U CN 200520070663U CN 2781529 Y CN2781529 Y CN 2781529Y
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- skeleton
- winding
- transformer
- secondary winding
- surface adhesive
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Abstract
The utility model relates to a surface adhesive inverse transformer for a flat plate display apparatus or a liquid crystal television and comprises a skeleton provided with a central hole and an E-shaped magnetic core penetrated in the central hole of the skeleton, wherein the skeleton is wound with a primary winding and a secondary winding. Leading feet are arranged on both sides of the skeleton, and a plurality of parallel fins are extended in the radial direction of the skeleton. Winding line grooves are formed among adjacent fins, and the primary winding is distributed in a plurality of winding line grooves to form multi-section serial connected structure. A plastic protective cover is covered outside the skeleton. The transformer can be made into miniature horizontal structure with less than 10 millimeters thickness, and the starting end and the tail end of the secondary high-voltage winding are provided with enough distance and groove dividing multi-section windings. The voltage difference of the secondary winding in each groove is only scores of volts, and the surface adhesive inverse transformer can avoid the discharge short circuit because of the voltage difference in the winding being too high.
Description
Technical field
The utility model relates to the surface mount contravariant transformer that is mainly used in panel display apparatus or liquid crystal TV set use.
Background technology
Cold cathode fluorescent lamp (CCFL) is all adopted in the background illumination of LCD display unit a few days ago, and high excitation voltage and heating voltage that CCFL needs provide by a transformation by reciprocal direction device, this transformation by reciprocal direction device utilizes controlled IC, field effect transistor (MOSFET) and an oscillation circuit are transformed into high_frequency sine wave voltage with a DC input voitage.CCFL requires the 2-3 voltage in work doubly to be used for igniting, therefore when operating voltage is 300-800V, ignition voltage must be up to 1.0-2.6KV (open circuit voltage), and frequency of oscillation is 30-200KHz, so the key element in the oscillation circuit is a high frequency high voltage transformer.This transformer requires high-frequency loss little, and temperature rise is low, and particularly withstand voltage excellent in insulation characteristic is to guarantee the reliability of loop works.In one's early years adopt the contact pin type transformer device structure, volume is bigger, can not satisfy the demand of the electronic equipment of miniaturization day by day.
About contravariant transformer, number of patent application 00135530.9 " the discharge igniting circuit of contravariant transformer and this contravariant transformer of use " has been described a multiterminal output contravariant transformer structure.Adopt a kind of many legs FERRITE CORE, can settle a plurality of secondary winding.This kind core structure is too complicated, makes to be difficult for, and reality is not used widely.
Summary of the invention
The purpose of this utility model provides a kind of miniature surface mount contravariant transformer that small-sized plane display unit such as liquid crystal TV set notebook computer is used that is suitable for.
This surface mount contravariant transformer comprises the skeleton that is provided with centre bore and is connected to the E type magnetic core in frame center hole, skeleton is wound with elementary winding and secondary winding, the both sides of skeleton are provided with pin, the lead-in wire of winding is welded on the pin, skeleton radially is extended with several parallel fins, form winding slot between the adjacent fins, elementary winding is distributed in and forms the structure that multistage is connected successively in a plurality of winding slots; Said skeleton is the horizontal skeleton of narrow long type, and skeleton is covered with the plastic cement protecting cover.
The both sides of skeleton are provided with pin, and the two ends lead-in wire of elementary winding and two sections lead-in wires of initial and end of secondary winding are welded on respectively on the corresponding pin.
Said magnetic core adopts the MnZn series ferrite material.
This transformer can be made into thickness less than 10 millimeters miniature horizontal type structure, and the E type ferrite magnetic core of long narrow winding skeleton and the lengthening size that matches with it makes the initiating terminal of secondary high pressure winding and ending end that enough distances be arranged, and can avoid discharge short.The high frequency MnZn based ferrite magnetic core of high Bs low-power consumption is difficult for saturated under big magnetic field, and temperature rise is lower.Adopt to divide groove multistage winding, make in each groove the secondary winding voltage difference have only tens volts, can avoid the inner short circuit that forms because voltage difference is high of winding, and can regulate the distributed capacitance of winding, keep rich group electric capacity within the resonance limit range.Secondary tail end is directly hung on the binding post by the skeleton grooves barricade, keeps secondary exit and elementary winding that bigger distance is arranged, and avoids creepage.The whole plastic cement protecting cover protection with insulation of primary and secondary winding has improved the insulation characterisitic between iron core and the winding.
In sum, it is little, simple in structure that this transformer has a volume, the design of Windings uniqueness, and withstand voltage height, insulation characterisitic is good, advantages such as good reliability.
Description of drawings
Fig. 1 is this contravariant transformer part section structural representation.
Fig. 2 is that Fig. 1 and A are to view.
Each label is among the figure: 1-E type magnetic core, 2-skeleton, the elementary winding of 3-, 4-protecting cover, 5 secondary winding, 6-fin, 7-pin, 8-adhesive plaster.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As depicted in figs. 1 and 2, the center pillar of the heart E type magnetic core 1 of two lengthenings inserts respectively in the centre bore of long narrow winding skeleton 2, the outside of skeleton 2 is distributed with parallel fins 6, form winding slot between the adjacent fins, the left side than being wound with elementary winding 3 in the sipes, be wound with secondary winding 5 in each narrower parallel slot of left side.It is mutually continuous with the secondary winding of adjacent slot that the secondary winding lead-in wire of each groove strides across fin successively.The head and the tail two ends lead-in wire of secondary winding 5 is respectively welded on the corresponding pin 7 in the left and right sides, and the head and the tail two ends wire bonds of elementary winding 3 is on two respective pins 7 on the same side (right side among the figure).Skeleton 2 is covered with protecting cover 4, the outer adhesive plaster 8 (Fig. 2 is equipped with the position of oblique line) that is wound with of lid.
As fully visible, each fin 6 is isolated elementary winding 3 and secondary winding 5, and secondary winding is separated into the plurality of sections of series connection successively.
This transformer can be made into 2 * 3.5 * 0.8cm or littler miniature sizes, and its downside is fitted and is installed on the corresponding site of electronic equipment.Withstand voltage all can reaching more than the 2400V between elementary winding 3 and the secondary winding 5, between elementary winding 3 and the magnetic core 1 and between secondary winding 5 and the magnetic core 1, insulation resistance is all greater than the 100M megaohm.
Claims (3)
1. surface mount contravariant transformer, comprise skeleton that is provided with centre bore and the E type magnetic core that is connected to the frame center hole, skeleton is wound with elementary winding and secondary winding, the both sides of skeleton are provided with pin, the lead-in wire of winding is welded on the pin, it is characterized in that skeleton radially is extended with several parallel fins, forms winding slot between the adjacent fins, elementary winding is distributed in a plurality of winding slots, forms the multistage cascaded structure; Skeleton is covered with the plastic cement protecting cover.
2. surface mount contravariant transformer according to claim 1 is characterized in that said skeleton is the horizontal skeleton of narrow long type.
3. surface mount contravariant transformer according to claim 1, the two ends wire bonds that it is characterized in that elementary winding are on two pins of the same side, and initial and end two lead-in wires of secondary winding are welded on respectively on the corresponding pin in both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070663 CN2781529Y (en) | 2005-04-12 | 2005-04-12 | Surface adhesive inverse transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070663 CN2781529Y (en) | 2005-04-12 | 2005-04-12 | Surface adhesive inverse transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2781529Y true CN2781529Y (en) | 2006-05-17 |
Family
ID=36762730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520070663 Expired - Fee Related CN2781529Y (en) | 2005-04-12 | 2005-04-12 | Surface adhesive inverse transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2781529Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641062A (en) * | 2013-12-17 | 2014-03-19 | 安徽华东光电技术研究所 | Method for preparing micro-nano structure |
| CN109003797A (en) * | 2018-07-26 | 2018-12-14 | 中国工程物理研究院流体物理研究所 | A kind of high voltage pulse transformer |
| CN109166712A (en) * | 2018-08-03 | 2019-01-08 | 湖州同立光电材料有限公司 | A kind of miniaturization LLC loop transformers |
| CN114255978A (en) * | 2020-09-25 | 2022-03-29 | 株式会社苏里亚 | High-voltage transformer |
-
2005
- 2005-04-12 CN CN 200520070663 patent/CN2781529Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641062A (en) * | 2013-12-17 | 2014-03-19 | 安徽华东光电技术研究所 | Method for preparing micro-nano structure |
| CN109003797A (en) * | 2018-07-26 | 2018-12-14 | 中国工程物理研究院流体物理研究所 | A kind of high voltage pulse transformer |
| CN109166712A (en) * | 2018-08-03 | 2019-01-08 | 湖州同立光电材料有限公司 | A kind of miniaturization LLC loop transformers |
| CN114255978A (en) * | 2020-09-25 | 2022-03-29 | 株式会社苏里亚 | High-voltage transformer |
| CN114255978B (en) * | 2020-09-25 | 2024-05-07 | 张玉川 | High-voltage transformer |
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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: 20060517 Termination date: 20100412 |