NO134927B - - Google Patents
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- Publication number
- NO134927B NO134927B NO416473A NO416473A NO134927B NO 134927 B NO134927 B NO 134927B NO 416473 A NO416473 A NO 416473A NO 416473 A NO416473 A NO 416473A NO 134927 B NO134927 B NO 134927B
- Authority
- NO
- Norway
- Prior art keywords
- air gap
- coil winding
- core
- transformer
- winding
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims description 23
- 239000004020 conductor Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
- H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/42—Flyback transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
- General Induction Heating (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Description
t Oppfinnelsen går ut på å anvende en induktivitet bestående t The invention consists in using an inductance consisting of
åv en kjerne av ferromagnetisk materiala som er utført med flere ben og bærer minst en spolevikling, og som bare innenfor en spolevikling har minst en luftspalte i et av spoleviklingen omsluttet ben og forøvrig er magnetisk sluttet, samtidig som den over spalten liggende vikling består av flertrådet høyfrekvensleder og spoleviklingen forøvrig av massiv tråd, of a core of ferromagnetic material which is made with several legs and carries at least one coil winding, and which only within one coil winding has at least one air gap in one of the legs enclosed by the coil winding and is otherwise magnetically closed, while the winding lying above the gap consists of multi-wire high-frequency conductor and the coil winding otherwise made of solid wire,
som. transformator for koblingsnettkomponenter med sperreomformer i en fjernsyrimottager. as. transformer for switching network components with blocking converter in a remote acid receiver.
En slik induktivitet er kjent fra DT-OS 1 439 441. Hensikten med deminduktivitet som er beskrevet i dette skrift, er å skaffe en tapsfattig spolevikling. Plaseringen av. den anvendte luftspalte er betegnet som vilkårlig. Such an inductance is known from DT-OS 1 439 441. The purpose of deminductivity, which is described in this document, is to provide a low-loss coil winding. The location of. the air gap used is designated as arbitrary.
I fjernsynmottagningsteknikken, særlig i farvefjernsynmottagere behøver man koblingsnett-komponenter inneholdende en sperreomformer med en transformator til å levere bes teints årbeidsspenninger. Sperreomformeren arbeider vanligvis 3.r.:.?.n aaed linjefrekvensen In television reception technology, especially in color television receivers, switching network components containing a blocking converter with a transformer are needed to supply the required operating voltages. The buck converter usually works 3.r.:.?.n aaed the line frequency
eller med en ikke synkronisert frekvens -w 18 til 25 kHz. De tilhørende transformatorer har en ferromagnetisk kjerne som vanligvis er sammensatt av ferriter i E- eller U-form. Et vesentlig problem ér i den forbindelse transfontiatoxsns sterke likestrøm-formagnétisering. For å nedsette den^u-?, ahaldige virkning på vekselstrøm-induktiviteten er det nødvendig- på i og for seg kjent måte å utføre den ferromagnetiske kjs-v?^© B& å luftspalte. En kjerne med en-nevneverdig luftspalte har på åsn annen side,sammenholdt med en magnetisk sluttet ^kjerne, et øket iaagné-tisk sprednings felt som er skadelig i f jernsynmottagere; f.'éks'. ved sin innflytelse or with a non-synchronized frequency -w 18 to 25 kHz. The associated transformers have a ferromagnetic core which is usually composed of ferrites in an E or U shape. A significant problem in this connection is transfontiatox's strong direct current premagnetization. In order to reduce the ^u-?, ahald effect on the alternating current inductance, it is necessary- in a manner known per se to carry out the ferromagnetic kjs-v?^© B& to air gap. A core with a significant air gap, on the other hand, compared to a magnetically closed core, has an increased iamagnetic dispersion field which is harmful in iron receivers; f.'ék'. by its influence
på billedrøret. Hvis, man for å svekke sprednings f el tet ville plasere én luftspalte innenfor spolelegemst s ville der i viklin-gen over luftspalten:.. fås anselige hvirvelstrømtap med fare for on the picture tube. If, in order to weaken the scattering field, one wanted to place an air gap inside the coil body, there would be in the winding above the air gap:.. considerable eddy current losses are obtained with the risk of
overhetning av spolen. overheating of the coil.
Til ;grunn for oppfinnelsen ligger den oppgave å skaffe en transformator for koblingsriett-komponenter; særlig farvefjernsynmottagere, hvor de motstridende krav om tilstrekkelig vekselstrøm-induktivitet, svakt spredningsfelt og liten tapseffekt er fullt oppfylt. For løsning av denne oppgave blir det foreslått ved en transformator for sperreomformer-koblingsnett-komponenter i én farvefjernsynmottager ifølge oppfinnelsen å anvende en induktivitet av den innledningsvis angitte art. At the basis of the invention is the task of providing a transformer for connection rig components; in particular color television receivers, where the conflicting requirements of sufficient alternating current inductance, weak scattering field and low loss effect are fully met. In order to solve this task, it is proposed to use an inductance of the type indicated at the outset in a transformer for buck converter-switching network components in one color television receiver according to the invention.
Anvendelsen av en slik kjent induktivitet i samsvar med oppfinnelsen var bare mulig etter at man til tross for den ovennevnte faglige: betenkelighet ved en luftspalte var gått til det skritt The use of such a known inductance in accordance with the invention was only possible after, despite the above-mentioned professional: skepticism in the case of an air gap, the step had been taken
å anordne en luftspalte,og det utelukkende på et sted hvor den er avskjermet av en omgivende spolevikling. Noen ansporing til, en slik anvendelse gir DT-OS 1 439 441 allerede av den grunn ikke at plaséringen av luftspalten er betegnet som vilkårlig og det dreier seg om forskjellige oppgaver. to arrange an air gap, and exclusively in a place where it is shielded by a surrounding coil winding. DT-OS 1 439 441 does not provide any incentive for such an application already for the reason that the placement of the air gap is described as arbitrary and it concerns different tasks.
Ved en transformator hvor der benyttes en kjent induktivitet i samsvar med oppfinnelsen, er det generende ytre magnetiske spredningsfélt, til tross for den for vekselstrøm-induktiviten . nødvendige luftspalte, så svakt at det kan ignoreres. Oppvarm-ningen åv spoleviklingen blir meget liten, så overtemperaturer med sikkéirhét lar seg unngå. Allikevel kan luftspalten velges forholdsvis bred, f.eks. i størrelsesorden 2-3 mm. In the case of a transformer where a known inductance is used in accordance with the invention, there is a disturbing external magnetic scattering field, despite that of the alternating current inductance. necessary air gap, so weak that it can be ignored. The heating of the coil winding is very small, so excessive temperatures with a safety temperature can be avoided. Even so, the air gap can be chosen relatively wide, e.g. in the order of 2-3 mm.
Transformatoren kan fordelaktig ha en EE-kjerne som er sammensatt av to E-formede halvdeler, og hvis midtre ben er oppdelt av luftspalten på midten. En slik utførelse blir særlig spredningsfelt-fattig. Dessuten ér egnede E-kjerner med forkortet midtben å få i serieproduksjon. The transformer can advantageously have an EE core which is composed of two E-shaped halves, and whose middle leg is divided by the air gap in the middle. Such an embodiment is particularly poor in the scattering field. In addition, suitable E-cores with a shortened middle leg are available in series production.
Oppfinnelsen vil bli belyst nærmere i det følgende ved ut-førelseséksempler på transformatorer som er anskueliggjort på tegningen. Fig. 1 viser en transformator med tre. ben dg fig. 2 eri transformator med to ben. Fig. 1 viser delvis skjematisk en transformator med en kjerne 1, fortrinnsvis av ferrit, som er sammensatt av to E-formede halvdeler.': Midtbenet av kjernen 1 er avbrutt av. en luftspalte 2,som, f.eks.■har en bredde av 3 mm. Midtbenet av kjernen 1 med luftspalten 2 er omsluttet av en spolevikling 3. Denne spolevikling 3 er utformet slik at dens indre vikling 4, som ligger over luftspalten 2, er fremstilt av flertrådet høyfrekvensleder, mens spolen 3 forøvrig består av massiv tråd. På denne måte er dels spredningsfeltet fra luftspalten 2 i vidtgående grad avskjermet utad, og dels er en av hvirvelstrømmer forårsaket overdreven.opp-hetning av spoleviklingen 3 unngått takket være utførelsen som flertrådet høyfrekvensleder. I praksis kunne der oppnås en minsk-ning av spolens oppvarmning til det halve i forhold til forholdene ved bare massiv tråd. The invention will be elucidated in more detail in the following by means of design examples of transformers which are illustrated in the drawing. Fig. 1 shows a transformer with three. leg dg fig. 2 eri transformer with two legs. Fig. 1 partially schematically shows a transformer with a core 1, preferably of ferrite, which is composed of two E-shaped halves.': The middle leg of the core 1 is interrupted by. an air gap 2, which, for example, has a width of 3 mm. The middle leg of the core 1 with the air gap 2 is enclosed by a coil winding 3. This coil winding 3 is designed so that its inner winding 4, which lies above the air gap 2, is made of multi-stranded high-frequency conductor, while the coil 3 otherwise consists of solid wire. In this way, the dispersion field from the air gap 2 is shielded to a large extent outwards, and partly one of eddy currents caused by excessive heating of the coil winding 3 is avoided thanks to the design as a multi-wire high-frequency conductor. In practice, it was possible to achieve a reduction of the coil's heating to half compared to the conditions with only solid wire.
Fig. 2 viser på sammme måte som fig. 1 et utførelseseksempel på en transformator med en kjerne sammensatt av to U-formede halvdeler. -Tilsvarende henvisnirigsbetegnelsene på fig. 1 ses det at en luftspalte 2 bare er anordnet i et kjerneben som bærer spoleviklingen 3, og den indre vikling 4 av spoleviklingen 3 skal igjen bestå av flertrådet høyfrekvensleder. Da seriemessig fremstilte U-kjerner for det meste har like lange ben, er det mellomrom som skal til for å gi luftspalten 2, i kjernens motstående frie ben som ikke bærer noen spolevikling, overspent av en ferritskiyé 5 for å gi en forøvrig magnetisk sluttet kjerne. Fig. 2 shows in the same way as fig. 1 an exemplary embodiment of a transformer with a core composed of two U-shaped halves. - Corresponding to the reference designations on fig. 1 it can be seen that an air gap 2 is only arranged in a core leg which carries the coil winding 3, and the inner winding 4 of the coil winding 3 shall again consist of multi-stranded high-frequency conductor. As serially produced U-cores mostly have legs of equal length, there is space needed to provide the air gap 2, in the opposite free leg of the core which does not carry any coil winding, spanned by a ferrite skiyé 5 to give an otherwise magnetically closed core .
Istedenfor en eneste luftspalte kan der også finnes fleire, hvis disse anordnes innenfor en spolevikling med indre lag av; flertrådet høyfrekvensleder. Instead of a single air gap, there can also be several, if these are arranged within a coil winding with an inner layer of; multi-wire high-frequency conductor.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732305957 DE2305957C3 (en) | 1973-02-07 | 1973-02-07 | Transformer for a flyback switch mode power supply in a color television |
Publications (2)
Publication Number | Publication Date |
---|---|
NO134927B true NO134927B (en) | 1976-09-27 |
NO134927C NO134927C (en) | 1977-01-05 |
Family
ID=5871201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO416473A NO134927C (en) | 1973-02-07 | 1973-10-29 |
Country Status (6)
Country | Link |
---|---|
DE (1) | DE2305957C3 (en) |
ES (1) | ES422973A1 (en) |
FI (1) | FI56594C (en) |
GB (1) | GB1451842A (en) |
IT (1) | IT1006215B (en) |
NO (1) | NO134927C (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2739503A1 (en) * | 1977-09-02 | 1979-03-08 | Licentia Gmbh | LINE TRANSFORMER FOR A TELEVISION RECEIVER |
DE3151170A1 (en) * | 1981-12-23 | 1983-06-30 | Siemens AG, 1000 Berlin und 8000 München | SHIELDED TRANSMITTER EMBEDDED IN INSULATING POWDER FOR AN INSBES. SWITCHING POWER SUPPLY OPERATED AT HIGHER FREQUENCIES, IN PARTICULAR. LOCKING CONVERTER POWER SUPPLY IN A COLOR TELEVISION RECEIVER |
US4654563A (en) * | 1984-03-28 | 1987-03-31 | Energy Technologies Corp. | Fluorescent lamp ballast |
DE3505976A1 (en) * | 1985-02-21 | 1986-08-21 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | TRANSFORMER FOR A TELEVISION RECEIVER |
DE3614492A1 (en) * | 1986-04-29 | 1987-11-05 | Electronic Werke Deutschland | ELECTRIC CONVERTER |
JPH01180301A (en) * | 1988-01-13 | 1989-07-18 | Hitachi Transport Syst Ltd | Apparatus for automatically cutting timber |
DE3824037A1 (en) * | 1988-07-15 | 1990-01-18 | Thomson Brandt Gmbh | TRANSFORMER FOR A SWITCHING POWER SUPPLY |
DE3828984A1 (en) * | 1988-08-26 | 1990-03-15 | Grundig Emv | CONTROLLED SWITCHING POWER SUPPLY WITH HIGH VOLTAGE GENERATOR FOR A TELEVISION |
NL9001350A (en) * | 1990-06-14 | 1992-01-02 | Philips Nv | TRANSFORMER WITH AIR GAP AND INSULATION FOIL PACKAGE. |
JP3348293B2 (en) * | 1992-05-18 | 2002-11-20 | ソニー株式会社 | Flat CRT monitor |
ATE442656T1 (en) | 2004-03-29 | 2009-09-15 | Dartmouth College | FOIL WINDING WITH LOW AC RESISTANCE FOR MAGNETIC COILS ON CORE WITH GAPS |
JP4631529B2 (en) * | 2005-04-28 | 2011-02-16 | パナソニック電工株式会社 | Trance |
JP2017069460A (en) * | 2015-09-30 | 2017-04-06 | 太陽誘電株式会社 | Coil component and manufacturing method therefor |
US10692646B2 (en) * | 2017-07-19 | 2020-06-23 | Toyota Motor Engineering & Manufacturing North America, Inc. | Single litz wire transformers |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1010204B (en) * | 1952-03-14 | 1957-06-13 | Siemens Ag | Coil arrangement with ferromagnetic core |
FR1198126A (en) * | 1958-06-02 | 1959-12-04 | Acec | Winding conductor for battleship-nested transformers |
DE1439441A1 (en) * | 1963-09-18 | 1968-12-05 | Sits Soc It Telecom Siemens | Low-loss coil winding for an inductance |
-
1973
- 1973-02-07 DE DE19732305957 patent/DE2305957C3/en not_active Expired
- 1973-10-29 NO NO416473A patent/NO134927C/no unknown
- 1973-11-12 FI FI349073A patent/FI56594C/en active
-
1974
- 1974-01-31 IT IT2001374A patent/IT1006215B/en active
- 1974-02-06 GB GB541274A patent/GB1451842A/en not_active Expired
- 1974-02-06 ES ES422973A patent/ES422973A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NO134927C (en) | 1977-01-05 |
DE2305957C3 (en) | 1983-11-24 |
FI56594B (en) | 1979-10-31 |
FI56594C (en) | 1980-02-11 |
IT1006215B (en) | 1976-09-30 |
DE2305957B2 (en) | 1977-12-29 |
GB1451842A (en) | 1976-10-06 |
ES422973A1 (en) | 1976-06-01 |
DE2305957A1 (en) | 1974-08-15 |
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