CN2052143U - On-off power supply transformer for black-and-white tv set - Google Patents
On-off power supply transformer for black-and-white tv set Download PDFInfo
- Publication number
- CN2052143U CN2052143U CN 89204691 CN89204691U CN2052143U CN 2052143 U CN2052143 U CN 2052143U CN 89204691 CN89204691 CN 89204691 CN 89204691 U CN89204691 U CN 89204691U CN 2052143 U CN2052143 U CN 2052143U
- Authority
- CN
- China
- Prior art keywords
- winding
- power supply
- black
- white
- supply transformer
- 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.)
- Withdrawn
Links
Images
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses an on-off power supply transformer for the black-and-white TV set. The utility model is suitable for high voltage switch circuits in the black-and-white TV sets of 31 cm, 35 cm and 44 cm to convert the power and transform the voltage. The on-off power supply transformer for the black-and-white TV set adopts a high performance ferrite core, a skeleton is provided with an isolated boss, the turn ratio of a primary winding and a secondary main winding is 6-7: 1, the turn stimulation ratio of the primary winding and a feedback winding is 15-20: 1, and the turn sampling ratio of the secondary main winding and a sampling winding is 2: 3. The power supply voltage has wide application range, and the on-off power supply transformer for the black-and-white TV set consumes few electric materials.
Description
The utility model relates to the black and white television set switching mode power supply transformer, is applicable in 31 centimetres, 35 centimetres and the 44 centimetres of black and white television set high-pressure type switching circuits, uses as power transfer, voltage transformation.
At present, China's black and white television set all adopts traditional series regulator.This power supply exists that efficient is low, supply voltage narrow application range and consume more electrician with shortcomings such as materials, even the low-pressure type Switching Power Supply that has occurred does not save heavy lamination transformer yet yet, the scope of application of line voltage also is subjected to certain restriction.
The less black and white television set switching mode power supply transformer of electrical material that the purpose of this utility model provides a kind of efficient height, the supply voltage scope of application is wide and consume.
In the utility model design, magnetic core adopts the high performance ferrite magnetic core; Frame design is isolated the boss skeleton for band; Elementary winding and secondary main winding turn ratio are 6～7:1, and elementary winding is 15～20:1 with the excitation ratio of feedback umber of turn, and secondary main winding is 2:3 with the sampling rate of sampling umber of turn.
The utility model can be saved a large amount of silicon steel sheet electrical materials after adopting the high performance ferrite magnetic core.After being designed to band isolation boss skeleton, needn't add cage ring again, make technique for coiling simplify, production efficiency is improved.After the coiling data above adopting, enlarged the scope of application of line voltage, can operate as normal when voltage is 90～270 volts.Adopt the switching mode power supply transformer behind efficiency than series regulator height.
Below in conjunction with accompanying drawing the utility model is further described below.
Accompanying drawing 1 is a structure chart of the present utility model.
Accompanying drawing 2 is the structure chart of the utility model center line bag.
The utility model is by elementary winding (12), secondary winding (11), (10), sampling winding (9), feedback winding (8), skeleton (6), magnetic core (1A), (1B) form, for reaching the safe insulation intensity of 3 kilovolts of alternating currents, creepage distance will be more than 6 millimeters, general colour TV adopts the way that adds cage ring with switching mode power supply transformer coiling winding, now according to actual conditions, on skeleton (6), the isolation boss is set, reach and the same function that adds cage ring, band is isolated boss skeleton (6) and is once finished with flame resistance enhanced plastic PBT injection moulding, at the boss width near the lead-in wire foot is 5 millimeters, the boss width of the other end is 3 millimeters, is equivalent to the cage ring of 5 millimeters and 3 millimeters respectively.During line bag (2) coiling, elementary winding (12) is isolated boss skeleton (6) bottom around band, and two ends respectively are welded on the terminal pin, wrap insulating tape (7) then.Again successively around secondary main winding (11), secondary auxiliary winding (10), sampling winding (9), feedback winding (8), and each winding two end is drawn out on the terminal pin and welds, when each winding of coiling, all need wrap insulating tape (7), because these umber of turns are less, therefore each winding needn't add cage ring, as long as keeping corresponding distance from skeleton (6) both sides.When coiling, elementary winding (12) is 6～7:1 with secondary main winding (11) turn ratio, elementary winding (12) is 15～20:1 with the excitation ratio of feedback winding (8) number of turn, and secondary main winding (11) is 2:3 with the sampling rate of sampling winding (9) number of turn.After handling like this, the creepage distance between each winding all keeps 6 millimeters, and whole line bag is also more smooth, dielectric withstanding voltage tests can reach 3 kilovolts and not puncture in 1 minute and do not have arcing phenomena, has reached the IEC standard of 3 kilovolts of reinforced insulation intensity.
After above-mentioned line bag (2) coiling is good, the line bag (2) of with magnetic core (1A) and (1B) packing into, magnetic core (1A), (1B) adopt the high performance ferrite magnetic core, and model is EE30, can guarantee technical index and reduces cost, and temperature rise is below 30 ℃.Surveying elementary winding (12) inductance value with the LCR electric bridge then is setting, is coated with the subsides binding agent on mating surface, and involutory back bag two layers of adhesive tape (3) are wrapped copper strips (4) again, locate to weld with scolding tin at joint (5).Magnetic core (1B) and band in the terminal pin direction are isolated between boss skeleton (6), cement with quick epoxy resin, treat to flood, dry behind the epoxy resin cure.
Claims (2)
1, a kind of black and white television set switching mode power supply transformer, be made up of elementary winding (12), secondary winding (11), (10), sampling winding (9), feedback winding (8), skeleton (6), magnetic core (1A), (IB), it is characterized in that: magnetic core (1A), (1B) adopt the high performance ferrite magnetic core; Skeleton (6) is isolated the boss skeleton for band; Elementary winding (12) is 6～7: 1 with secondary main winding (11) turn ratio, and elementary winding (12) is 15～20: 1 with the excitation ratio of feedback winding (8) number of turn, and secondary main winding (11) is 2: 3 with the sampling rate of sampling winding (9) number of turn.
2, black and white television set switching mode power supply transformer according to claim 1 is characterized in that it is 5 millimeters at the boss width near the lead-in wire foot that band is isolated boss skeleton (6).The boss width of the other end is 3 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204691 CN2052143U (en) | 1989-04-15 | 1989-04-15 | On-off power supply transformer for black-and-white tv set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89204691 CN2052143U (en) | 1989-04-15 | 1989-04-15 | On-off power supply transformer for black-and-white tv set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2052143U true CN2052143U (en) | 1990-01-31 |
Family
ID=4861986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89204691 Withdrawn CN2052143U (en) | 1989-04-15 | 1989-04-15 | On-off power supply transformer for black-and-white tv set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2052143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575627A (en) * | 2014-11-06 | 2016-05-11 | 苏州悦煌电子有限公司 | High-frequency transformer |
-
1989
- 1989-04-15 CN CN 89204691 patent/CN2052143U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575627A (en) * | 2014-11-06 | 2016-05-11 | 苏州悦煌电子有限公司 | High-frequency transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200972819Y (en) | Extra-high voltage self auto-transformer | |
| CN211788567U (en) | High-voltage power-taking power supply encapsulating transformer | |
| CN209675079U (en) | A kind of axial direction quadripartion photovoltaic boosting dry-type transformer | |
| CN201181633Y (en) | 10KV and 20KV dual-purpose single-phase rolled iron-core transformer | |
| CN2052143U (en) | On-off power supply transformer for black-and-white tv set | |
| CN208093344U (en) | A kind of dc circuit breaker energy supply transformer | |
| CN215578140U (en) | Ungrounded epoxy resin poured 35kV voltage transformer | |
| CN202363228U (en) | 500kV-grade three-phase three-winding excitation-free pressure regulating high-impedance power transformer | |
| CN209859779U (en) | Coil assembly of current transformer | |
| CN203746639U (en) | Line-terminal on-load voltage regulating single-phase 220kV high-impedance transformer | |
| CN106920655A (en) | A kind of alternating expression lightning protection transformer | |
| CN202796410U (en) | Outdoor current transformer | |
| CN212967382U (en) | Novel transformer | |
| CN2332048Y (en) | Three-phase distribution transformer | |
| CN2293111Y (en) | Distribution transformer | |
| CN206819866U (en) | Transformer | |
| CN218631627U (en) | Low-voltage low-power transformer suitable for high-altitude environment | |
| JPS5728572A (en) | Dc high voltage generator | |
| CN214848128U (en) | Low-leakage-current small-arc driving transformer | |
| CN212695032U (en) | Multi-winding parallel high-capacity voltage transformer | |
| CN209118911U (en) | A kind of current transformer multiturn wound form Primary Conductor mounting structure | |
| CN220085809U (en) | Flyback DCDC converter | |
| CN217955599U (en) | Multifunctional current transformer | |
| CN220171896U (en) | High-power high-density patch transformer | |
| CN217361337U (en) | SMD transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |