TW406276B - Flyback transformer - Google Patents

Flyback transformer Download PDF

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Publication number
TW406276B
TW406276B TW087107692A TW87107692A TW406276B TW 406276 B TW406276 B TW 406276B TW 087107692 A TW087107692 A TW 087107692A TW 87107692 A TW87107692 A TW 87107692A TW 406276 B TW406276 B TW 406276B
Authority
TW
Taiwan
Prior art keywords
voltage coil
low
coil bobbin
winding
voltage
Prior art date
Application number
TW087107692A
Other languages
Chinese (zh)
Inventor
Shunji Onodera
Original Assignee
Victor Company Of Japan
Priority date (The priority date 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 date listed.)
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Publication date
Priority claimed from JP9203793A external-priority patent/JPH1145814A/en
Application filed by Victor Company Of Japan filed Critical Victor Company Of Japan
Application granted granted Critical
Publication of TW406276B publication Critical patent/TW406276B/en

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42Flyback transformers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06Coil winding
    • H01F41/064Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/069Winding two or more wires, e.g. bifilar winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Details Of Television Scanning (AREA)

Abstract

A low-voltage coil 3, serving as a primary winding, is wound around a low-voltage coil bobbin 2. Legs of paired cores 1 are inserted into a cylindrical hollow space of the low-voltage coil bobbin 2. A high-voltage coil 5, serving as a secondary winding, is wound around a high-voltage coil bobbin 4. The high-voltage coil bobbin 4 is coupled around the low-voltage coil bobbin 2. A ferromagnetic substance 10 is interposed between the low-voltage coil 3 and the high-voltage coil 5 in this flyback transformer.

Description

对滅部中"標革局只^消费合作社印获 406276;__ 五'發明説明(/) ' 發明背景 本發明關於一反饋變壓器用來輸入一高電壓至被倂入 電視接收器或計算機顯示終端機之陰極射線管(CRT)陽 極。 一般說來,使用於電視接收器或計算機顯示終端機之 CRT需要相當高陽極電壓用於顯示影像 '因此’該CRT通 常被裝設一反饋變壓器用於增壓及整流反饋脈衝以產生一 高電壓。 在許多裝設CRT裝置中,目前彩色電視接收器必須充 當AV相容元件之一以配合字元多路轉換廣播服務而且增 大影像螢幕。再者,當該CRT當作顯示終端裝置,需要滿 足最低要求,如一增大的影像螢幕及高品質解析度。特別 地,對於高品質解析度的要求是逐渐增加的。 該反饋變壓器給予影像品質很大的影響。因此*爲滿 足上述不同的要求,該反饋變壓器必須產生高輸出電壓及 高輸出電流。再者,該反饋襻艇器必須具有消除高電壓負 載變化,振鈴現象及不需要的輻射。特別地,該振鈴現象 出現在螢幕上爲暗及亮條。再者該振鈴現象出現當作增加 的元件,其包含在該反饋變壓器之主電流。該線圈之溫度 增加不是較佳的而且,因此該可靠度降低》爲解決這些問 題,不同方法已.被採用。 ______ 本紙張尺度適用中國151家標準(CNS ) Λ4規格(210Χ29·/公趙) —Μ Ϊ I - I - I I - I^衣---I - I ί - - --11 I ----- (請先閱讀背而之注意事項再填寫本頁) 經漓部中夾標準局炅-T消贽合作社印狀 _____40627β 五、發明説明(2 ) 再者,具有高性能之反饋變壓器可被安裝於一般電視 接收器或顯示終端器β因此,以低價格提供這類高性能反 饋變壓器是被實現的重要因素。 自此,習知反饋變壓器之配置將被說明參考圖10及 11。圖10係剖面圖顯示習知反饋變壓器之配置β圖11係 該習知反饋變壓器之電路圖β 在圖10中,一低電壓線圈繞線管2具有一圓柱體, 其一低電壓線圈3被纏繞該圓柱體當作原繞組。該低電壓 線圈繞線管2具有圓柱中空空間。兩U形磁芯1之足部分 由兩未端被插入此圓柱中空空間。兩磁芯1共同運轉地形 成一矩形,當該磁芯與該低電壓線圈繞線管2被組合。 再者高電壓線圈繞線管4具有圓柱體,其一高電壓線 圈5被纏繞該圓柱體當作次繞組。該高電壓線圈5形成單 層或多層分離的螺線管環繞該高電壓線圏繞線管4。如圖 11所示,該高電壓線圈5包括數個繞組部分5a。當每個繞 組部分5a是多層的如圖所示,一絕緣中間層6,如一聚酯 薄膜被插入介於該繞組部分5a之鄰接層。換言之,高電壓 線圈5之繞組部分5a及該絕緣中間層6交互以同軸地被包 覆在高電壓線圈繞線管4之圖柱體以便形成多層繞組結構 〇 _4_ 本紙张尺度適州中國S家標率(CNS ) /\4现格(210X 297公f ) ! - I - - m HI j .---- ml - l ^I I i I- - - - - I ....... Τ» • . -¾ 、-=s (請先閲讀背面之注意事項再填寫本頁) _______406276 b7 五、發明説明(3 ) 個別的繞組部分5a以連纘地被連接經由插入二極體8 ,如圖11所示。藉由此配置,個別的繞組部分5a產生同 相電壓,其電壓被二極體8所增加及整流。如圖11所示, 一輸入二極體8a被連接在高電壓線圈5之電壓輸入端(即 ,接地端)。再者,一輸出二極體8b被連接至該高電壓線 圈5之輸出端。該高電壓線圈5之電壓輸入端是該繞組之 前端,當高電壓線圈5被纏繞在高電壓線圈繞線管4。該 高電壓線圈5之輸出端是該繞組之尾端。提供輸入二極體 8a在電壓輸入端係較佳的在高電壓調整特色及電壓耐久性 特色(即,可靠度)可改善》然而,該輸入二極體8a係選 擇的而且因此可省略。如圖1〇,序號7表示接頭被用於連 接二極體8, 8a及8b。 高電壓線圈繞線管4具有該低電壓線圈繞線管2被插 入之圓柱中空空間。也就是,該高電壓線圈繞線管4被耦 接環繞該低電壓線圈繞線管2之外部形狀用於整合該低電 壓線圈繞線管2與高電壓線圈繞線管4。該低電壓線圈繞 線管2與高電壓線圈繞線管4兩者,以此方式整合,被容 納於外殻9,其該外殻空間由絕緣樹脂11所充滿如圖10 所示β用來降低來自上述反饋變壓器之振鈴現象的傳統方 法參考圖12至15將被解釋。在圖12至15中,C1代表一 電容器被連接至自動亮度限制(ABL)電路,其被提供在 該反饋變壓器外.。C2代表一電容器被連接至電壓源+Β,其 _5_ 本紙張尺度適用+國1¾家標隼(CNS ) Λ4規格(210 Χ 297公1 ) ------I I I 4^-----I T _ ί . , 1 、νδ (請先閱讀背而之注意事項再填寫本頁) ------406^76 五、發明説明($ ) 被提供在在該反饋變壓器外。低電壓線圈3之一末端被連 接至該電壓源+B。該低電壓線圈3之另一未端被連接至習 知的水平輸出電晶體(未顯示)之集極。 圖12顯示第一習知電路包括含有電阻R1及線圈L1 之並聯電路β此並聯電路被連接至高電壓線圈5之前端, 即靠近該ABL電路之電壓輸入β 在圖12,該振鈴電流流動沿著一包括電容器Cl之電 路—電阻R1及線圈L1之並聯電路—高電壓線圈5之繞組 部分5a—分配電容器(未顯示)—低電壓線圈3 —電容器 C2->電容器C1 »該電阻R1衰減該振鈴電流藉由轉變該電 流成焦耳熱。在此案例中,該分配電容器是由低電壓線圈 繞線管2之介電質,高電壓線圈繞線管4及絕緣樹脂11所 形成。 圖13顯示第二習知電路包括一共振電路包含一線圈 L1及與該線圈L1並聯之電阻R1及電容器C3串聯電路。 這共振電路具有相對於該振鈴頻率之共振頻率。在圖13中 ,該電阻R1藉由轉變成焦耳熱衰減該振鈴電流。 圖14顯示第三習知電路包括被插入介於低電壓線圈3 及高電壓線圈5間之圖柱電阻12。日本專利公開Νο.61-212008揭示該第三習知電路之詳細內容。 _6_ 本紙張尺度適州中國S家標率(CNS ) Λ4%格(2ΙΟΧ 297公f ) -----I - I I、·*^— I I —_ _.丁 、ve (請先閱讀背面之注意事項再填寫本頁) ----446 m----- 五、發明説明(c) 在圖14中,該振鈴電流流動係沿著包括該高電壓線 圈5之繞組部分5a—分配電容器—電阻12—分配電容器·> 該高電壓線圈5之繞組部分5a之迴路。該電阻12衰減振 鈴電流藉由轉變該電流至焦耳熱。 圖15顯示一第四習知電路。正及負脈衝在該高電壓 線圏5之每個繞組部分5a之兩端被製造,雖然圖15顯示 只有一繞組部分5a之脈衝波形。根據該第四習知電路,兩 導體13被插入介於該低電壓線圈3及高電壓線圈5間在從 正脈衝產生部分至負脈衝產生部分之區域。一電阻R1被提 供以連接這些兩個導體13 »日本公告審査專利Νο.63-36232揭示該第四習知電路之詳細內容。 在圖15中,該電阻R1衰減該振鈴電流藉由轉變該電 流成爲焦耳熱β 雖然降低該振鈴電流之效果被獲得,上述第一至第四 習知電路具有以下問題。 顯示於圖12中該第一習知電路不可被應用在顯示在 圖11之反饋變壓器,因爲該輸入二極體8a被提供在該高 電壓線圈5之電壓輸入側。再者,從該電阻R1所產生之局 部熱量可破壞鄰近的絕緣樹脂11。這降低該可靠度。特別 _7_ 本紙張尺度適州中國囤家標準(CNS ) /\4规格(210X 297公趙) ---I - n n I I.'"民.丁 (請先閱讀背面之注意事項再填寫本頁) A7 A7 經消部中央#準局只.T消費合作社印掣 -----406276----- 五、發明説明(6 ) 地,該振鈴雷流變大與該水平偏轉頻座一致β這增加在該 電阻R1之功率浪費,進一步惡化該可靠度。更進一步,使 用該線圈L1及該電阻R1並非較佳地在其材料成本增加而 且在製造過程中工作效率降低。再者,該裝置縮小化不能 實行因爲明顯空間必須被保持用於安裝該電阻R1及線圈 L1。 顯示於圖13之第二習知電路是不利的在該電阻R1之 功率消耗是大的因爲發生在該高電壓線圈5之振鈴在原繞 組被衰減,其該繞組之電流値是大的。因此,每個元件需 要具有大的電容量。這增加成本。藉由該電阻R1,電容器 C3及該線圈L1衰減該原始電流惡化高電壓調整特色。假 如該電阻R1之電阻値增加,在該電阻R1之功率消耗將進 一步增加》該高電壓調整特色將進一步惡化。·因此,該電 阻R1之電阻値不可如此明顯地增加。因此,該振鈴不能有 效率地被衰減。 根據顯示於圖14之第三習知電路,該電阻12之電阻 値必定在數個Ι^Ω之水準以給予令人滿意的振鈴降低。然 而以低成本及高電阻値製造用於充分地衰減該振鈴之圓柱 電阻12是困難的。因此,該振鈴現象不能充分地被衰減。 爲給予充足的效果在振鈴之衰減,日本專利公開Ν〇61-212008揭示一方法用於附加地在該主繞組側提供該電阻 R1及線圈L1之並聯電路。在此情形中,該問題將以與上 __8______ 本紙張尺度適州中國囤家標準(CNS ) Λ4規格(2丨0X 297公笳) I - ϋ ....... -- 1 - I—! - I I. '*-- I ----n ——.----Τ» -s (請先閱讀背而之注意事項再填寫本頁) A7 A7 經澆部中央標準局β-τ'消於合作社印製 ____406276 五、發明説明(7 ) 述第二習知電路相同方式產生。再者,在電阻12之發熱將 是個問題β 同樣地,顯示於圖15之第四習知電路遭遇該發熱問 題。連接該導體13及電阻R1是複雜的工作。這增加在製 造過程所需之工時。該結構需要被改良以支撐該電阻R1。 這增大該本體尺寸,增加元件數目及因此增加全部花費。 發明摘要 鑒於先前問題,本發明具有目的以提供一反饋變壓器 可適當地降低該振鈴現象,減少成本,要求減少在製造程 序之工時,精密尺寸,小溫度增加,在高電壓調整特色及 絕緣能力極佳,而且可靠的性能。 爲達成上述及相關目的,本發明提供一反饋變壓器產 生一高電壓,包括一低電壓線圈繞線管用於纏繞一低電壓 線圈充當原始繞組,一磁芯被插入該低電壓線圏繞線管, 一高電壓線圈繞線管被連接該低電壓線圈繞線管周圍用於 纏繞高電壓線圈充當次級繞組,而且一鐵磁性物質被插入 介於該低電壓線圈及該高電壓線圈間β 較佳地,該高電壓線圈包括數個連接的繞組部分藉由 插入介於相鄰繞組部分間所提供二極體,而且一輸入二極 體被連接至相對於該高電壓線圈之電壓輸入端之該數個繞 _9_ 本紙張尺度適用中國囤家標準(CNS ) Λ4規格(2丨ΟΧ 297公f ) n I— I n - I s - - —I— --- - l · - HI I - ----. ! : X» vn 、-=a (請先間讀背面之注意事項再填寫本頁) ------- 五、發明説明u ) 組部分之第一繞組部分輸入端。 較佳地,該低電壓線圈繞線管係圓柱的,而且該鐵磁 性物質具有一圓柱體,其中空空間用於環繞該低電壓線圈 纏繞該低電壓線圈繞線管,以至於相對該磁芯之磁通量沒 有形成封閉迴路。 較佳地,該高電壓線圈繞線管具有數個凹槽以該高電 壓線圈繞線管之軸方向排列,每個凹槽以該高電壓線圈繞 線管切線方向延伸,而且高電壓線圈分別地在這些凹槽被 纏繞》 較佳地,至少一縫以該磁芯之軸向延伸被發現在該鐵 磁性物質。 較佳地,至少一窗口被形成在該鐵磁性物質》 較佳地,該鐵磁性物質包括以磁芯之軸向被分隔之數 個部分,以至於該鐵磁性物質不被定位在該磁芯之間隙。 圖式簡單說明 本發明之以上及其他目的,特點及優點由以下說明連 同附屬圖式被閱讀將變得明顯,其中: 圖1係顯示本發明反饋變壓器之較佳實施例之剖面圖 本紙張尺度適州中國阀家榡率(CNS ) Λ4规格(210X 297公趙) •^! I !二 - 1 -= |\ - -II - —I— n ........ m ,τ (請先閱讀背面之注意事項再填芦?本頁) ——_____----- 五、發明説明(y ) 9 圖2A,2B及2C係立體圖顯示本發明反饋變懕器之必 要元件; 圖3係立體圖顯示本發明反饋變壓器之低電壓線圈繞 線管及高電壓線圈繞線管之組合狀態; 圖4A及4B係立體圖顯示本發明使用在該反饋變壓器 一鐵磁性物質之不同結構; 圖5A, 5B及5C係立體圖顯示本發明使用在該反饋變 壓器一鐵磁性物質之不同結構; 圖6A及6B係顯示本發明該反饋變懕器之衰減該振鈴 現象之功能; 圖7A至7D係解釋本發明該反饋變壓器效果之圖形; 圖8係剖面圖顯示本發明該反饋變壓器之另一實施例 9 圖9係剖面圖顯示本發明該反饋變壓器之另一實施例 9 圖1Q係剖面圖顯示一習知反饋變壓器之組合; 圖11係顯示於圖ίο該習知反饋變壓器之電路圖; 圖12係顯示一具有振鈴降低功能之第一習知電路; 圖13係顯示一具有振鈴降低功能之第二習知電路; 圖w係顯示一具有振鈴降低功能之第三習知電路; 圖15係顯示一具有振鈴降低功能之第四習知電路。 較佳實施例描述 ------1Ί -- 本紙张尺度適川中國囤家標準(CNS ) Λ4%格(2丨0/2们公漦) n I I— n - I -....... i ......I - .....I I n --I— : ^» I I-丨 (讀先聞讀背'6之注意事項再填寫本頁) 406276 l] 五、發明説明((。) 本發明較佳實施例將參考圖式被說明。在所圖形相同 元件由相同數字所指出。 首先’參考圖1至圖3,該反饋變壓器之排列與本發 明之實施例將被說明。顯示於圖11之該電路圖對於本發明 該反饋變壓器是適合的。 在圖1,一低電壓線圈繞線管2具有一圓柱體,其一 低電壓線圈3被纏繞該圓柱體當作原繞組。該低電壓線圈 繞線管2具有圓柱中空空間2a,如圖2Β所示β兩U形磁 芯1之足部分由兩末端被插入該低電壓線圈繞線管2之圓 柱中空空間2a ’如圖2C所示。兩磁芯1共同運轉地形成 一矩形,當該磁芯與該低電壓線圈繞線管2被組合,如圖 1所示。 經滅部中次標ίΐ-^θί.τ.消资合作·社印於 II : ---- - I - - - I I <^I I - I II 丁 、1 (請先閱讀背之注意事項再填寫本頁) 再者,一高電壓線圈繞線管4具有圓柱體,其一高電 壓線圈5被纒繞該圓柱體當作次繞組。該高電壓線圏繞線 管4具有圓柱中空空間4a,如圖2A所示。該高電壓線圈5 形成單層或多層分離的螺線管環繞該高電壓線圈繞線管4 。如圖11所示’該高電壓線圈5包括數個繞組部分5a。 當每個繞組部分5a是多層的如圖1所示,一絕緣中間層6 ,如一聚酯薄膜被插入介於該繞組部分5a之鄰接層換言 之,高電壓線圈5之繞組部分5a及該絕緣中間層6交互被 包覆在高電壓線圈繞線管4之圖柱體以便形成多層繞組結 _____12____ 本紙张尺度適川中國®家標準(CNS ) Λ4坭格(210X297公漦) 經7"部中次標準局,,只工消贽合作社印^- _____^〇627β Β7__ 五、發明説明(|丨) 構》 個別的繞組部分5a以連纘地經由插入二極體8被連 接,如圖11所示。藉由此配置,個別的繞組部分5a產生 同相電壓,其電壓被二極體8所增加及整流。如圖11所示 ,一輸入二極體8a被連接在高電壓線圈5之電壓輸入端( 即,接地端)。再者,一输出二極體8b被連接至該高電壓 線圈5之輸出端。提供在該電壓輸入端之輸入二極體8a在 該高電壓調整特色係較佳的而且電壓耐久性特色(即,可 靠度)可改善。如之後所述,本發明所實現之振鈴降低可 應用於具有輸入二極體8a在輸入端之反饋變壓器。如圖1 及2A〜2C,序號7表示用於連接二極體8, 8a及8b之接頭 在該低電壓線圏3被纏繞該低電壓線圏繞線管2,該 圖柱鐵磁性物質10進一步被纏繞該低電Μ線圈3。高電壓 線圈繞線管4具有圓柱中空空間4a。該低電壓線圈繞線管 2被插入該圓柱中空空間4a。換言之,如圖3所示,該低 電壓線圈繞線管2及高電壓線圈繞線管4被整合藉由接合 環繞該低電壓線圈繞線管2外部形狀之高電壓線圈繞線管 4。如圖1明顯所示,根據本發明之排列,該反饋變壓器具 有被放置介於該低雷躂線圈3及高電壓線圈5間之鐵磁性 物質10〇 ---------------,1T--1---- (請先κ1讀背面之注意事項再填寫本頁) 本紙張尺度適川中國囤家標卒(CNS ) Λ4规格(210Χ 297公f ) 經潢部屮夾摞準局負工消费合作社印$! ------406^7e~~--- 五、發明説明(A ) 圖8顯示本發明之另一實施例。根據此實施例,該鐵 磁性物質10被放置在該高電壓線圈繞線管4而不是提供相 同物質環繞該低電壓線圈繞線管2 °首先’該鐵磁性物質 ίο被纏繞該高電壓線圈繞線管4沿著該內部圓柱壁。則’ 該絕緣中間層6 ’如聚醋薄膜’被纏繞該鐵磁性物質10 * 因此,該高電壓線圈5被纏繞該絕緣中間層6。簡言之’ 本發明建議放置該鐵磁性物質10介於該低電壓線圈3及高 電壓線圈5間》 該低電壓線圈繞線管2及高電壓線圈繞線管4兩者’ 其藉由耦接環繞低電壓線圈繞線管2外部形狀之高電壓線 圈繞線管4被整合,被容納在於外殻9如圖1及8所示。 其該外殻9之空間由絕緣樹脂11所充滿。 顯示於圖1,8及11之每個高電壓線圈5被分成總共 四個繞組部分5a。然而,該繞組部分5a之數目不被限制 於已揭示者。同樣地’介於該繞組部分5a間被放置插入二 極體8之數目不限制爲三個。例如,使用四個插入二極體 如圖3所示是可能的。 該鐵磁性物質之詳細結構參考圖4A〜4B及5A-5B以 下將被說明。通常鐵磁性"被定義爲獲得的磁性’當磁 性原子或金屬自由電子使得磁力矩以相同方向藉由正交換 相互作用加以組織以便形成同時的磁化作用。任何具有這 ___U__ 本紙張尺度適川中國®家標卒(CNS ) Λ4坭格(210X 297公漦) ---------A------訂--l--*--'" (請先W讀背面之注意事項再填寫本頁) 經漬部中央#隼局貞J.消贽合竹社印5;1. 406276 A7 B7 五、發明説明(Ο ) 類鐵磁性之物質被稱爲鐵磁性物質。 圖4A顯示一鐵磁性物質10具有一縫10s沿著該磁芯 1之軸方向完全地延伸,相對於該磁芯1之磁通量以便形 成無封閉迴路。提供該縫l〇s防止任意短路電流。藉由此 排列,該鐵磁性物質1〇之圓柱體一端經由該縫l〇a與另一 端在該纏繞方向被分隔。然而,當電流小足以壓制發熱, 形成一封閉迴路是可能的* 圖4B顯示另一鐵磁性物質10具有絕緣構件14封閉 介於該圓柱體分隔端間之縫。這排列相對於磁通量沒有形 成封閉迴路。然而提供一多層鐵磁性物質1〇是可能的。或 者,降低該鐵磁性物質1〇之圓周長度至大約3/4圈是可能 的。 再者,圖5Α至5C顯示該鐵磁性物質10之不同變形 <·圖5Α顯示鐵磁性物質10具有數個縫l〇s以該磁芯1之 軸方向延伸。換言之,鐵磁性物質之數個矩形片,藉由 插入縫l〇s互相被分隔,共同地形成圓柱體。圖5Β顯示鐵 磁性物質1〇具有數個縫l〇s以顯示於圖4A相同方式。再 者,數個窗口 l〇w被形成以至於以該磁芯1之軸方向延伸 ◊圖5C顯示一鐵磁性物質,其圓柱體被分隔成數個圓柱形 部分藉由以圓周方向延伸之缺口 1〇g° 本紙张尺度適川中國Η家標準(CNS ) Λ4规格(210X297公t ) ---------d------訂--Γ------t {諳先閱讀背面之注意事項再填寫本頁) 經满部中夾標準局ΰί-χ消费合作社印# ______406276 B7__To the Ministry of Standards and Industry, only the Consumer Cooperatives Co., Ltd. has obtained 406276; __ Five 'Description of the Invention (/)' BACKGROUND OF THE INVENTION The present invention relates to a feedback transformer for inputting a high voltage to a television receiver or computer display. Cathode Ray Tube (CRT) anode of the terminal. Generally speaking, a CRT used in a television receiver or a computer display terminal requires a relatively high anode voltage for displaying images. Therefore, the CRT is usually equipped with a feedback transformer for boosting and rectifying feedback pulses to generate a high voltage. . In many CRT installations, current color television receivers must act as one of the AV compatible components to support character multiplex broadcasting services and increase video screens. Furthermore, when the CRT is used as a display terminal device, it needs to meet the minimum requirements, such as an enlarged video screen and high-quality resolution. In particular, the demand for high-quality resolution is gradually increasing. This feedback transformer greatly affects the image quality. So * to meet the different requirements mentioned above, the feedback transformer must produce high output voltage and high output current. Furthermore, the feedback barge must have high voltage load variations, ringing and unwanted radiation. In particular, the ringing phenomenon appears as dark and bright bars on the screen. Furthermore, the ringing phenomenon appears as an increased component, which is included in the main current of the feedback transformer. Increasing the temperature of the coil is not preferable and therefore the reliability is reduced. To solve these problems, different methods have been adopted. ______ This paper size applies to 151 Chinese standards (CNS) Λ4 specifications (210 × 29 · / Gong Zhao) —Μ Ϊ I-I-II-I ^ 衣 --- I-I ί----11 I ---- -(Please read the precautions on the back before filling this page) Seal of the Ministry of Standards and Technology-T Consumer Cooperatives __40627β 5. Description of the invention (2) Furthermore, high-performance feedback transformers can be used Installed in a general television receiver or display terminal β. Therefore, providing such a high-performance feedback transformer at a low price is an important factor to be realized. From now on, the configuration of the conventional feedback transformer will be explained with reference to FIGS. 10 and 11. Fig. 10 is a sectional view showing the configuration of a conventional feedback transformer β Fig. 11 is a circuit diagram of the conventional feedback transformer β In Fig. 10, a low-voltage coil bobbin 2 has a cylinder, and a low-voltage coil 3 is wound This cylinder is used as the primary winding. This low-voltage coil bobbin 2 has a cylindrical hollow space. The foot portions of the two U-shaped magnetic cores 1 are inserted into this cylindrical hollow space from two ends. The two magnetic cores 1 are collectively formed into a rectangle when the magnetic core and the low-voltage coil bobbin 2 are combined. Furthermore, the high-voltage coil bobbin 4 has a cylinder, and a high-voltage coil 5 is wound around the cylinder as a secondary winding. The high-voltage coil 5 forms a single-layered or multi-layered separated solenoid around the high-voltage line winding bobbin 4. As shown in Fig. 11, the high-voltage coil 5 includes a plurality of winding portions 5a. When each winding portion 5a is multi-layered, as shown in the figure, an insulating intermediate layer 6, such as a polyester film, is inserted between adjacent layers of the winding portion 5a. In other words, the winding portion 5a of the high-voltage coil 5 and the insulating intermediate layer 6 interact to be coaxially covered with the figure cylinder of the high-voltage coil bobbin 4 so as to form a multilayer winding structure. House standard rate (CNS) / \ 4 present grid (210X 297 male f)!-I--m HI j .---- ml-l ^ II i I-----I ....... Τ »•. -¾,-= s (please read the notes on the back before filling this page) _______406276 b7 5. Description of the invention (3) The individual winding parts 5a are connected in succession via the inserted diode 8, As shown in Figure 11. With this configuration, the individual winding portions 5a generate an in-phase voltage, whose voltage is increased and rectified by the diode 8. As shown in FIG. 11, an input diode 8 a is connected to a voltage input terminal (ie, a ground terminal) of the high-voltage coil 5. Furthermore, an output diode 8b is connected to the output terminal of the high-voltage coil 5. The voltage input terminal of the high voltage coil 5 is the front end of the winding. When the high voltage coil 5 is wound around the high voltage coil bobbin 4. The output of the high-voltage coil 5 is the tail of the winding. Providing the input diode 8a at the voltage input terminal is better in terms of high voltage adjustment characteristics and voltage endurance characteristics (ie, reliability). However, the input diode 8a is selected and therefore can be omitted. As shown in Fig. 10, the number 7 indicates that the connector is used to connect the diodes 8, 8a and 8b. The high-voltage coil bobbin 4 has a cylindrical hollow space into which the low-voltage coil bobbin 2 is inserted. That is, the high-voltage coil bobbin 4 is coupled to surround the external shape of the low-voltage coil bobbin 2 for integrating the low-voltage coil bobbin 2 and the high-voltage coil bobbin 4. Both the low-voltage coil bobbin 2 and the high-voltage coil bobbin 4 are integrated in this manner and are housed in a housing 9 whose space is filled with an insulating resin 11 as shown in FIG. 10 for β A conventional method of reducing the ringing phenomenon from the above-mentioned feedback transformer will be explained with reference to FIGS. 12 to 15. In Figs. 12 to 15, C1 represents a capacitor connected to an automatic brightness limiting (ABL) circuit, which is provided outside the feedback transformer. C2 represents a capacitor connected to a voltage source + B, which is _5_ This paper size is applicable to the +1 national standard 隼 (CNS) Λ4 specification (210 x 297 male 1) ------ III 4 ^ ---- -IT _ ί., 1, νδ (Please read the precautions before filling this page) ------ 406 ^ 76 5. The invention description ($) is provided outside the feedback transformer. One end of the low voltage coil 3 is connected to the voltage source + B. The other end of the low-voltage coil 3 is connected to a collector of a conventional horizontal output transistor (not shown). FIG. 12 shows that the first conventional circuit includes a parallel circuit β including a resistor R1 and a coil L1. This parallel circuit is connected to the front end of the high-voltage coil 5, that is, the voltage input β near the ABL circuit. In FIG. 12, the ringing current flows along A circuit including a capacitor C1-a parallel circuit of a resistor R1 and a coil L1-a winding portion 5a of a high-voltage coil 5-a distribution capacitor (not shown)-a low-voltage coil 3-a capacitor C2- > a capacitor C1 »the resistor R1 attenuates the The ringing current converts this current into Joule heating. In this case, the distribution capacitor is formed by the dielectric of the low voltage coil bobbin 2, the high voltage coil bobbin 4 and the insulating resin 11. FIG. 13 shows that the second conventional circuit includes a resonance circuit including a coil L1 and a series circuit of a resistor R1 and a capacitor C3 connected in parallel with the coil L1. The resonance circuit has a resonance frequency with respect to the ringing frequency. In FIG. 13, the resistor R1 attenuates the ringing current by converting into Joule heat. FIG. 14 shows that the third conventional circuit includes a column resistor 12 inserted between the low-voltage coil 3 and the high-voltage coil 5. Japanese Patent Publication No. 61-212008 discloses the details of the third conventional circuit. _6_ The size of this paper in China is CNS. The standard is Λ4% (2ΙΟΧ 297 公 f) ----- I-II, · * ^ — II —_ _. Ding, ve (Please read the back (Please note this page and fill in this page again) ---- 446 m ----- 5. Description of the invention (c) In Figure 14, the ringing current flows along the winding part 5a including the high voltage coil 5-distribution capacitor —Resistor 12—Distribution capacitor > The circuit of the winding portion 5a of the high voltage coil 5. The resistor 12 attenuates the ringing current by converting the current to Joule heat. FIG. 15 shows a fourth conventional circuit. Positive and negative pulses are produced at both ends of each winding portion 5a of the high-voltage line 圏 5, although Fig. 15 shows a pulse waveform of only one winding portion 5a. According to the fourth conventional circuit, two conductors 13 are inserted between the low-voltage coil 3 and the high-voltage coil 5 in a region from a positive pulse generating portion to a negative pulse generating portion. A resistor R1 is provided to connect these two conductors 13 »Japanese Published Examined Patent No. 63-36232 discloses the details of the fourth conventional circuit. In FIG. 15, the resistor R1 attenuates the ringing current by converting the current into Joule heat β. Although the effect of reducing the ringing current is obtained, the above-mentioned first to fourth conventional circuits have the following problems. The first conventional circuit shown in FIG. 12 cannot be applied to the feedback transformer shown in FIG. 11 because the input diode 8a is provided on the voltage input side of the high-voltage coil 5. Furthermore, the local heat generated from the resistor R1 can destroy the adjacent insulating resin 11. This reduces the reliability. Special _7_ This paper is in Chinese Standard (CNS) / \ 4 (210X 297 male Zhao) --- I-nn I I. '&Quot; 民. 丁 (Please read the notes on the back before filling in (This page) A7 A7 Economics Department Central #Associate Bureau only.T Consumer Cooperative Co., Ltd .-------- 406276 ----- 5. Description of the invention (6) The ringing thunder current is larger than the horizontal deflection frequency. Blocking β increases the waste of power in the resistor R1 and further deteriorates the reliability. Furthermore, the use of the coil L1 and the resistor R1 is not preferable in that the material cost thereof increases and the work efficiency decreases in the manufacturing process. Furthermore, downsizing of the device cannot be implemented because significant space must be maintained for mounting the resistor R1 and the coil L1. The second conventional circuit shown in FIG. 13 is disadvantageous. The power consumption in the resistor R1 is large because the ringing occurring in the high-voltage coil 5 is attenuated in the original winding, and the current 値 of the winding is large. Therefore, each component needs to have a large capacitance. This increases costs. Through the resistor R1, the capacitor C3 and the coil L1 attenuate the original current and deteriorate the high-voltage adjustment feature. If the resistance R1 of the resistor R1 increases, the power consumption at the resistor R1 will further increase. The high voltage adjustment feature will further deteriorate. • Therefore, the resistance R1 of the resistor R1 cannot be increased so significantly. Therefore, the ringing cannot be attenuated efficiently. According to the third conventional circuit shown in FIG. 14, the resistance 値 of the resistor 12 must be at a level of several ^ Ω to give satisfactory ringing reduction. However, it is difficult to manufacture the cylindrical resistor 12 for sufficiently attenuating the ringing at low cost and high resistance. Therefore, the ringing phenomenon cannot be sufficiently attenuated. To give sufficient effect to the attenuation of ringing, Japanese Patent Publication No. 61-212008 discloses a method for additionally providing a parallel circuit of the resistor R1 and the coil L1 on the main winding side. In this case, the problem will be the same as the above __8______ This paper size is suitable for the China Store Standard (CNS) Λ4 specification (2 丨 0X 297 cm) I-ϋ .......-1-I —!-I I. '*-I ---- n ——.---- Τ »-s (Please read the precautions before completing this page) A7 A7 Central Standards Bureau -τ 'disappeared in the cooperative printed __406276 5. Description of the invention (7) The second conventional circuit described above is generated in the same way. Furthermore, heat generation in the resistor 12 will be a problem β. Similarly, the fourth conventional circuit shown in FIG. 15 suffers from this heat generation problem. Connecting the conductor 13 and the resistor R1 is a complicated task. This increases the man-hours required during the manufacturing process. The structure needs to be modified to support the resistor R1. This increases the body size, increasing the number of components and therefore the overall cost. SUMMARY OF THE INVENTION In view of the previous problems, the present invention has the object to provide a feedback transformer that can appropriately reduce the ringing phenomenon and reduce costs, requiring a reduction in man-hours in the manufacturing process, precision dimensions, small temperature increase, high voltage adjustment characteristics, and insulation capabilities. Excellent and reliable performance. In order to achieve the above and related objectives, the present invention provides a feedback transformer to generate a high voltage, including a low voltage coil bobbin for winding a low voltage coil to serve as an original winding, a magnetic core is inserted into the low voltage wire bobbin, A high voltage coil bobbin is connected around the low voltage coil bobbin for winding the high voltage coil as a secondary winding, and a ferromagnetic substance is inserted between the low voltage coil and the high voltage coil β. The high voltage coil includes a plurality of connected winding sections by inserting a diode provided between adjacent winding sections, and an input diode is connected to the voltage input terminal of the high voltage coil. Several windings _9_ This paper size is applicable to Chinese storehouse standard (CNS) Λ4 specification (2 丨 〇Χ 297 公 f) n I— I n-I s--—I— ----l ·-HI I-- ---.!: X »vn 、-= a (Please read the precautions on the back before filling this page) ------- 5. Description of the invention u) Input terminal of the first winding part of the group part. Preferably, the low-voltage coil bobbin is cylindrical, and the ferromagnetic material has a cylinder, wherein an empty space is used to wind the low-voltage coil bobbin around the low-voltage coil so as to be opposite to the magnetic core. The magnetic flux does not form a closed loop. Preferably, the high-voltage coil bobbin has a plurality of grooves arranged in an axial direction of the high-voltage coil bobbin, and each groove extends in a tangential direction of the high-voltage coil bobbin, and the high-voltage coils are respectively Ground is wound in these grooves. Preferably, at least one slit with the axial extension of the magnetic core is found in the ferromagnetic substance. Preferably, at least one window is formed in the ferromagnetic substance. Preferably, the ferromagnetic substance includes a plurality of portions separated by an axial direction of the magnetic core, so that the ferromagnetic substance is not positioned on the magnetic core. The gap. The drawings briefly explain the above and other objects of the present invention, and the features and advantages will become apparent from the following description and the accompanying drawings, in which: FIG. 1 is a sectional view showing a preferred embodiment of the feedback transformer of the present invention. Paper dimensions Shizhou China ’s valve rate (CNS) Λ4 specification (210X 297 male Zhao) • ^! I! 二-1-= | \--II-—I— n ........ m, τ ( Please read the precautions on the back before filling in this page?) ——_____----- V. Description of the invention (y) 9 Figures 2A, 2B and 2C are perspective views showing the necessary components of the feedback transformer of the present invention; The 3 series perspective view shows the combined state of the low voltage coil bobbin and the high voltage coil bobbin of the feedback transformer of the present invention; Figures 4A and 4B are perspective views showing different structures of a ferromagnetic substance used in the feedback transformer of the present invention; Figure 5A 5B and 5C are perspective views showing different structures of a ferromagnetic substance used in the feedback transformer of the present invention; FIGS. 6A and 6B are functions for attenuating the ringing phenomenon of the feedback transformer of the present invention; FIGS. 7A to 7D are explanatory diagrams Invented the graphic of the effect of the feedback transformer; 8 series sectional view shows another embodiment 9 of the feedback transformer of the present invention. 9 series sectional view shows another embodiment of the feedback transformer 9 of the present invention. FIG. 1Q series sectional view shows a conventional feedback transformer combination; FIG. 11 series Figure 12 shows the circuit diagram of the conventional feedback transformer; Figure 12 shows a first conventional circuit with a ringing reduction function; Figure 13 shows a second conventional circuit with a ringing reduction function; and Figure w shows a circuit with a Third conventional circuit for ring reduction function; FIG. 15 shows a fourth conventional circuit with ring reduction function. Description of the preferred embodiment ----- 1Ί-The paper size is suitable for Sichuan Chinese Standards (CNS) Λ4% grid (2 丨 0 / 2men's public) n II— n-I -.... ... i ...... I-..... II n --I—: ^ »I I- 丨 (Read the notes before reading and read '6 before filling out this page) 406276 l] Five 2. Description of the Invention ((.) The preferred embodiment of the present invention will be described with reference to the drawings. The same elements are indicated by the same numbers in the drawings. First, referring to FIGS. 1 to 3, the arrangement of the feedback transformer and the implementation of the present invention An example will be explained. The circuit diagram shown in Fig. 11 is suitable for the feedback transformer of the present invention. In Fig. 1, a low voltage coil bobbin 2 has a cylinder, and a low voltage coil 3 is wound around the cylinder. As the original winding, the low-voltage coil bobbin 2 has a cylindrical hollow space 2a. As shown in FIG. 2B, the foot portions of the β two U-shaped magnetic cores 1 are inserted into the cylindrical hollow of the low-voltage coil bobbin 2 from both ends. The space 2a ′ is shown in FIG. 2C. The two magnetic cores 1 work together to form a rectangle. When the magnetic core and the low-voltage coil bobbin 2 are combined, as shown in FIG. Marked ΐΐ- ^ θί.τ. Consumers' cooperation printed on II: -----I---II < ^ II-I II Ding, 1 (Please read the precautions on the back before filling this page) Furthermore, a high-voltage coil bobbin 4 has a cylinder, and a high-voltage coil 5 is wound around the cylinder as a secondary winding. The high-voltage coil bobbin 4 has a cylindrical hollow space 4a, as shown in FIG. 2A As shown in the figure. The high voltage coil 5 forms a single layer or multiple layers of separated solenoids surrounding the high voltage coil bobbin 4. As shown in FIG. 11, the high voltage coil 5 includes a plurality of winding sections 5a. When each winding The part 5a is a multilayer as shown in FIG. 1. An insulating intermediate layer 6, such as a polyester film, is inserted between adjacent layers of the winding portion 5a. In other words, the winding portion 5a of the high-voltage coil 5 and the insulating intermediate layer 6 are alternately connected. Wrapped on the figure cylinder of high-voltage coil bobbin 4 to form a multilayer winding junction _____12____ This paper size is suitable for Sichuan China Standards (CNS) Λ4 坭 Grid (210X297) 漦 7 " Ministry of Intermediate Standards Bureau, , Industrial and consumer cooperative seal ^-_____ ^ 〇627β Β7__ V. Description of invention (| 丨) Structure The group part 5a is connected in a continuous manner via the insertion diode 8, as shown in Fig. 11. With this configuration, the individual winding part 5a generates an in-phase voltage, whose voltage is increased and rectified by the diode 8. As shown in Fig. 11 As shown in FIG. 11, an input diode 8a is connected to the voltage input terminal (ie, the ground terminal) of the high voltage coil 5. Furthermore, an output diode 8b is connected to the output terminal of the high voltage coil 5. Provided The input diode 8a at the voltage input terminal is better in the high voltage adjustment feature and the voltage durability feature (ie, reliability) can be improved. As described later, the ringing reduction achieved by the present invention can be applied to a feedback transformer having an input diode 8a at the input terminal. As shown in FIGS. 1 and 2A to 2C, the serial number 7 indicates that the connector for connecting the diodes 8, 8a and 8b is wound on the low-voltage line 圏 3, the low-voltage line 圏 winding tube 2, and the figure is a ferromagnetic substance 10 The low-electricity M coil 3 is further wound. The high-voltage coil bobbin 4 has a cylindrical hollow space 4a. The low-voltage coil bobbin 2 is inserted into the cylindrical hollow space 4a. In other words, as shown in FIG. 3, the low-voltage coil bobbin 2 and the high-voltage coil bobbin 4 are integrated by joining the high-voltage coil bobbin 4 surrounding the external shape of the low-voltage coil bobbin 2. As clearly shown in FIG. 1, according to the arrangement of the present invention, the feedback transformer has a ferromagnetic substance 10 placed between the low-thunder coil 3 and the high-voltage coil 5. ----, 1T--1 ---- (Please read the notes on the back of κ1 before filling in this page) The paper size is suitable for Sichuan Chinese storehouse standard (CNS) Λ4 specification (210 × 297 male f) Printed by the Ministry of Work, Consumer Affairs and Cooperatives of the Bureau of quasi-bureaus! ------ 406 ^ 7e ~~ --- 5. Description of the Invention (A) FIG. 8 shows another embodiment of the present invention. According to this embodiment, the ferromagnetic substance 10 is placed on the high-voltage coil bobbin 4 instead of providing the same substance around the low-voltage coil bobbin 2 ° First, the ferromagnetic substance is wound around the high-voltage coil The bobbin 4 runs along the inner cylindrical wall. Then, 'the insulating intermediate layer 6' is wound around the ferromagnetic substance 10 like a polyacetate film '. Therefore, the high-voltage coil 5 is wound around the insulating intermediate layer 6. In short, the present invention proposes to place the ferromagnetic substance 10 between the low-voltage coil 3 and the high-voltage coil 5 "The low-voltage coil bobbin 2 and the high-voltage coil bobbin 4" The high-voltage coil bobbin 4 connected to the outer shape of the low-voltage coil bobbin 2 is integrated and housed in a housing 9 as shown in FIGS. 1 and 8. The space of the casing 9 is filled with the insulating resin 11. Each of the high-voltage coils 5 shown in Figs. 1, 8 and 11 is divided into a total of four winding portions 5a. However, the number of the winding portions 5a is not limited to those disclosed. Similarly, the number of diodes 8 placed between the winding portions 5a is not limited to three. For example, using four inserted diodes as shown in Figure 3 is possible. The detailed structure of the ferromagnetic substance will be described below with reference to Figs. 4A to 4B and 5A-5B. Ferromagnetism is generally defined as the acquired magnetism 'when magnetic atoms or free electrons of a metal cause magnetic moments to be organized in the same direction by positive exchange interactions to form simultaneous magnetization. Anyone who has this _U__ size of this paper is suitable for China® Family Standards (CNS) Λ4 坭 (210X 297 cm) --------- A ------ Order--l-* -'" (Please read the precautions on the reverse side before filling out this page) by the central section of the staining department # 贞 局 贞 J. 消 贽 合 竹 社 印 5; 1. 406276 A7 B7 V. Description of the invention (0) Ferromagnetic substances are called ferromagnetic substances. Fig. 4A shows that a ferromagnetic substance 10 has a slit 10s extending completely along the axial direction of the magnetic core 1, with respect to the magnetic flux of the magnetic core 1 so as to form a non-closed loop. The slit 10s are provided to prevent any short-circuit current. With this arrangement, one end of the cylinder of the ferromagnetic substance 10 is separated from the other end in the winding direction via the slit 10a. However, when the current is small enough to suppress heat generation, it is possible to form a closed circuit * FIG. 4B shows that another ferromagnetic substance 10 has an insulating member 14 closing a gap between the separated ends of the cylinder. This arrangement does not form a closed loop with respect to the magnetic flux. However, it is possible to provide a multilayer ferromagnetic substance 10. Alternatively, it is possible to reduce the circumferential length of the ferromagnetic substance 10 to about 3/4 turns. 5A to 5C show different deformations of the ferromagnetic substance 10 < FIG. 5A shows that the ferromagnetic substance 10 has several slits 10s extending in the axial direction of the magnetic core 1. In other words, several rectangular pieces of the ferromagnetic substance are separated from each other by the insertion slit 10s to collectively form a cylinder. Fig. 5B shows that the ferromagnetic substance 10 has several slits 10s in the same manner as shown in Fig. 4A. Furthermore, several windows 10w are formed so as to extend in the axial direction of the magnetic core 1. Fig. 5C shows a ferromagnetic substance, the cylinder of which is divided into a plurality of cylindrical portions by a notch 1 extending in the circumferential direction. 〇g ° This paper is suitable for Sichuan Chinese Standard (CNS) Λ4 specification (210X297mm t) --------- d ------ Order --Γ ------ t { (Please read the notes on the back before filling in this page.) The Ministry of Standards and Industry Bureau of the People's Republic of China ΰ-χconsuming cooperative society seal # ______406276 B7__

五、發明説明(,sO 改良該鐵磁性物質10之形狀、長度、寬度、厚度或 如顯示於圖5A至5C之材料引起該鐵磁性物質10阻抗之 明顯改變。因此,該反饋變壓器之自共振頻率可被刻意地 改變或足夠地調整藉由提供數個縫l〇s或窗口 l〇w或缺口 l〇g分開該圓柱體如圖5A至5C所示》這使得進一步改善 該高電壓調整特色係可能的β 根據如圖5Α至5C所示之排列,防止該鐵磁性物質 10藉由流通該磁芯1之缺口 lg的磁通量所磁化β因此, 該溫度增加可進一步被壓制》 特別地,根據圖5C之排列,介於該鐵磁性物質10之 上圖柱體及下圓柱體間該圓周缺口 lg可被提供與該磁芯1 之缺口 lg相同高度。因此,排列該該鐵磁性物質1〇以便 不直接地面對該磁芯1之缺口 lg是可能的。 藉此排列,介於該磁芯1之缺口 lg與鐵磁性物質10 間之實質間隙可被擴大。壓制該熱量或藉由鐵磁性物質10 所引起之溫度增加是有效的。 材料,如鈷、鎳、鐵、純鐵、矽鋼、合金、不鏽鋼及 肥粒鐵這類,可當作鐵磁性物質10。該鐵磁性材料在相對 導磁率一般來說是大的。例如,鈷是250,鎳是600及鐵 是5000。用於本發明之鐵磁性物質10具有大於100之相 -14--- 本紙張尺度適用中國围家標卑(CTNS ) Λ4規格(210X297公趋) (請先閱讀背面之注意事項再填寫本頁)V. Description of the invention (, sO improves the shape, length, width, thickness of the ferromagnetic substance 10 or the material as shown in FIGS. 5A to 5C causes a significant change in the impedance of the ferromagnetic substance 10. Therefore, the self-resonance of the feedback transformer The frequency can be intentionally changed or adjusted sufficiently by separating the cylinder by providing several slits 10s or windows 10w or gaps 10g as shown in Figs. 5A to 5C. This makes the high voltage adjustment feature further improved. The possible β is arranged as shown in FIGS. 5A to 5C to prevent the ferromagnetic substance 10 from being magnetized by the magnetic flux passing through the gap 1g of the magnetic core 1. Therefore, the temperature increase can be further suppressed. In particular, according to In the arrangement of FIG. 5C, the circumferential gap lg between the upper and lower cylinders of the ferromagnetic substance 10 can be provided at the same height as the gap lg of the magnetic core 1. Therefore, the ferromagnetic substance 1 is arranged. So that it is not possible to directly face the gap lg of the magnetic core 1. By this arrangement, the substantial gap between the gap lg of the magnetic core 1 and the ferromagnetic substance 10 can be enlarged. The heat is suppressed or by iron Magnetic substance 10 The temperature increase caused by this is effective. Materials such as cobalt, nickel, iron, pure iron, silicon steel, alloys, stainless steel, and ferrous iron can be used as ferromagnetic substances. 10. The ferromagnetic material has a general relative permeability. It is large. For example, cobalt is 250, nickel is 600, and iron is 5000. The ferromagnetic substance 10 used in the present invention has a phase greater than 100 -14 --- This paper size is applicable to the Chinese family standard (CTNS) ) Λ4 specification (210X297 public trend) (Please read the precautions on the back before filling this page)

,1T 好洎部中夾梂卑局员工消费合竹私印說 406276 B7 五、發明説明(,y) 對導磁率,較佳地大於200是可以建議的。 例如,用於該鐵磁性物質1〇之實際材料可爲一鐵箔 ,其零件號碼爲FE-20CX來自Sumitomo 3M或一合金箔, 其零件號碼爲MENPC2來自Daido Special Stee卜 實際上,零件號碼爲FE-20CX之鐵箔係具有黏著層在 一側之帶。這簡化組裝工作,當該鐵箔被纏繞該低電壓線 圈繞線管2因爲該鐵箔帶可容易地貼上或固定在低電壓線 圈繞線管2藉由該黏著層。顯示於圖4A之鐵磁性物質10 可容易地被實現藉由切割該鐵箔帶以至於具有短於該低電 壓線圈繞線管2圖周長度之長度,在該低電壓線圈3被纏 繞該低電壓線圈繞線管2。 其次,本發明所引進之振鈴降低將被說明。圖6A係 一電路圖顯示反饋變壓器沒有輸入二極體在該高電壓線圈 5之輸入端》圖6B係一電路圖顯示另一反饋變壓器具有該 輸入二極體8a在該高電壓線圈5之輸入端。 在圖6A,該振鈴電流部分流動沿著一迴路包括電容器 C1—該高雷壓線圈5之繞組部分5a—分配電容器—鐵磁性 物質10—分配電容器—電容器C2—電容器C1。該振鈴電 流另一部分流動沿著一迴路包括電容器C1—該高電壓線圈 5之繞組部分5a—分配電容器—低電壓線圈3->電容器C2 -12____ 本紙张尺度適用中國囤家標準(CNS ) Λ4规格(210X 297公漦) ---------%------、1T--L--·--·Λ (請先閱讀背面之注意事項再填寫本頁) 好淆部中次標準局萸-τ·消费合竹社印*'1木 _____1®62T6_b7 五、發明说明(ιΜ 〜 —電容器Cl。 在圖6B中’該振鈴電流部分流動沿著一迴路包括該 高電壓線圈5之繞組部分5a—分配電容器—高電壓線圈5 之繞組部分5a—分配電容器—低電壓線圈3—分配電容器 —高電壓線圈5之繞組部分5a。 以此方式’該鐵磁性物質10被放置在該振鈴電流所 流經之封閉迴路。該鐵磁性物質10之內部阻抗及外部阻抗 形成阻抗Z由以下方程式所表示t Z=R+j2 π fL............. ( 1) 此處“R”表示該鐵磁性物質10之電阻,”j"表示虛數 單位與(_1) 1/2相同,"Γ表示一振鈴頻率,"L"表示該鐵 磁性物質10之電感及“;r”表示一圓之圓周與其直徑之比 値。 該振鈴電流“i”由以下方程式所表示。 ... .........( 2 ), 1T The Ministry of Health, the Ministry of Education, and the Consumers ’Consumption and Private Seal, said 406276 B7 V. Description of the Invention (, y) For magnetic permeability, preferably greater than 200 can be suggested. For example, the actual material used for the ferromagnetic substance 10 may be an iron foil, whose part number is FE-20CX from Sumitomo 3M or an alloy foil, whose part number is MENPC2 from Daido Special Stee. Actually, the part number is The iron foil of FE-20CX is a tape with an adhesive layer on one side. This simplifies the assembly work when the iron foil is wound around the low-voltage coil bobbin 2 because the iron foil tape can be easily attached or fixed to the low-voltage coil bobbin 2 by the adhesive layer. The ferromagnetic substance 10 shown in FIG. 4A can be easily realized by cutting the iron foil strip so as to have a length shorter than the circumference of the low-voltage coil bobbin 2 in which the low-voltage coil 3 is wound. Voltage coil bobbin 2. Second, the ringing reduction introduced by the present invention will be explained. Fig. 6A is a circuit diagram showing that the feedback transformer does not have an input diode at the input terminal of the high voltage coil 5. Fig. 6B is a circuit diagram showing another feedback transformer that has the input diode 8a at the input terminal of the high voltage coil 5. In FIG. 6A, the ringing current portion flows along a circuit including a capacitor C1—the winding portion 5a of the high-lightning coil 5—a distribution capacitor—a ferromagnetic substance 10—a distribution capacitor—a capacitor C2—a capacitor C1. The other part of the ringing current flows along a circuit including capacitor C1—the winding portion 5a of the high-voltage coil 5—distribution capacitor—low-voltage coil 3- > capacitor C2 -12 ____ This paper standard is applicable to Chinese storehouse standard (CNS) Λ4 Specifications (210X 297mm) ---------% ------, 1T--L-- ·-· Λ (Please read the precautions on the back before filling this page) Confused中 -τ · Consumer Hezhusha Seal of the Ministry of Foreign Affairs * '1 木 _____ 1®62T6_b7 V. Description of the invention (ιΜ ~-Capacitor Cl. In FIG. 6B,' The ringing current partly flows along a loop including the high The winding part 5a of the voltage coil 5-the distribution capacitor-the winding part 5a of the high voltage coil 5-the distribution capacitor-the low voltage coil 3-the distribution capacitor-the winding part 5a of the high voltage coil 5. In this way 'the ferromagnetic substance 10 is Placed in a closed loop through which the ringing current flows. The internal impedance and external impedance of the ferromagnetic substance 10 form an impedance Z which is represented by the following equation t Z = R + j2 π fL ........... .. (1) Here "R" represents the resistance of the ferromagnetic substance 10, and "j " represents the imaginary unit and (_1) 1/2 is the same, " Γ represents a ringing frequency, " L " represents the inductance of the ferromagnetic substance 10 and "; r" represents the ratio of the circumference of a circle to its diameter 値. The ringing current "i" is given by Represented by the following equations: ............... (2)

R+j2nfL 該振鈴頻率係大約1MHz之水準。根據方程式(2) ,該振鈴電流“i”藉由增加阻抗Z可被壓制至較小値。該 振鈴電流“Γ被轉換成焦耳熱藉由顯示於方程式(1)中 鐵磁性物質10之電阻元件R。因此,本發明可令人滿意地 降低該振鈴現象。這可達成不論該輸入二極體8a被提供在 ---I - - I ...... - · I - -I I 式取-II I ! - I - ------- .-. (請先W讀背面之注意事項再填寫本頁) 本紙張尺度適用中國囤家榡準(CNS ) Λ4規格(210 X297公f ) A7 ____B7 五、發明説明(Π ) 該高電壓線圈5之輸入端。也就是,本發明之振鈴降低可 有效地應用至該反饋變壓器具有該輪入二極體8a被提供在 該高電壓線圈5之輸入端’其具有較佳排列在改善高電壓 調整特色及電壓耐久性特色(即,可靠度)。 本發明之振鈴降低與上述習知裝置比較需要較小電阻 ,其習知裝置只依靠在電阻轉換成焦耳熱所實現之振鈴降 低》因此,提供該反饋變壓器由焦耳熱之少熱量及少溫度 增加是可能的。換言之’本發明在限制下減少該反饋變壓 器之尺寸是可能的,其該限制使得溫度增加必須壓制在預 定範圍內。 再者,當該輸入二極體8a被連接至該高電壓線圈5 之輸入端,該高電壓線圈5之繞組部分5a之大約中心變成 一中性電壓點。這分割該已產生脈衝成爲正脈衝及負脈衝 。因此,其相當分配電容量被降低》高階共振可被實現, 當壓制高階負載改變。再者,該脈衝之峰値被降低至半値 。這改善可靠度。 圖7Α至7D係顯示實際地由該反饋變壓器所測量之波 形,其變壓器具有該輸入二極體8a被連接至該高電壓線圈 5之輸入端。圖7A顯示當沒有實施振鈴降低時獲得的波形 (即,該鐵磁性物質10不被提供)。圖7B係顯示當該鐵 磁性物質10係0.1mm厚之不鏽鋼箔(SUS430)時獲得之 _____10 ___- _ 本紙浪尺度適用中國國家標率(CNS ) Λ4規格(210X 297公漦) ---- n ----^ I I i n I _ T ^ 、-° (請先間讀背而之注意事項再填寫本頁) _406276 b7___ 五、發明説明(d) 波形。圖7C係顯示當該鐵磁性物質10係〇.〇3mm厚之鐵 箔時獲得之波形β圖7D係顯示當該鐵磁性物質10係 0.2mm厚之合金箔時獲得之波形。如圖4Α所說明,鐵磁 性物質10具有圓周長度大約相當於一週,其缺口(即,縫 l〇s)介於該繞組之前緣與後緣間以便不形成封閉迴路相對 於該磁芯1之磁通量。該鐵磁性物質10被插入介於該低電 壓線圈3與高電壓線圈5間》 在每個圖7A至7D中,上波形表示該低電壓線圈3之 輸入電流具有縱軸顯示其電流數値。下波形表示該高電壓 線圈5之電感具有縱軸顯示其電壓數値。在每個圖式,橫 軸代表時間。 如介於圖7A及圖7B〜7D之明顯比較,該振鈴現象可 被充分地降低根據本發明藉由採用介於該低電壓線圈3及 高電壓線圈5間之鐵磁性物質 雖然未顯示,相同測試被施行藉由其他具有非鐵磁特 性之其他物質取代鐵磁性物質1〇,如厚銅箔係非鐵 磁性物質’如0.3ηπη厚鉛箔係另一非鐵磁性物質,如 0.2mm厚磷青網箔係另一非鐵磁性物質,及如〇 2mm厚鋁 箱係順磁性物蓂。在每個案例中,測量結果係與顯示於圖 7A相同。換言之,沒有效果發生在將降低振鈴現象。 ---_ _ 本纸張尺度適;fl巾酬料4 ( CNs) Λ4规格(2丨();^ 297公费) i -i I -- · -- —I— i /^, - - i—f n^i ^^1 n ! Hu— (請先閱讀背面之注意事項再填苟本頁) 406276 37 五、發明説明(θ ) 由先前描述中,瞭解的是提供介於該低電壓線圈3及 高電壓線圈5間之鐵磁性物質10對於壓制該振鈴現象是有 效的。 圖9係顯示根據本發明另一實施例之反饋變壓器。顯 示於圖9之該反饋變壓器是所謂的部分纏繞反饋變壓器, 其中數個圓柱溝槽4b以該高電壓線圈繞線管4之軸方向被 排列。每個溝槽4b以高電壓線圈繞線管4之圓周方向延伸 。該高電壓線圈5被分別地纏繞在這些圓柱溝槽4b » 在圖9中,插入二極體8被安裝在該高電壓線圈5之 中間位置。輸出二極體8b被安裝在該高電壓線圈5之後緣 。輸入二極體8a被提供在該高電壓線圈5之前緣。 如先前描述所說明,本發明提供一反饋變壓器包括一 低電壓線圈繞線管用於纏繞低電壓線圈充當原繞組,一磁 芯被插入該低電壓線圈繞線管,一高電壓線圈繞線管聯接 該低電壓線圈低電壓線圈用於纏繞一高電壓線圈充當次繞 組,及一鐵磁性物質被插入介於該低電壓線圈及高電壓線 圈》藉由此排列,提供一反饋變壓器可充分地降低該振鈴 現象,低成本,在製造過程中降低要求工時,精緻之尺寸 ,少溫度增加,在高電壓調整特色及絕緣能力之優越性及 可靠的性能是可能的。 _21_ 本紙張尺度適州中國S家標準(CNS ) Λ4現格(2丨0X 297公漦) --I n - I n I l.^^―― I 丁 ^ 、T (請先閱讀背面之注意事項再填寫本頁) A7 B7 406276 五、發明説明u。) 本發明被以許多方式實施而不偏離必要特色之精神。 如上所述實施例而且想要表示而非限制,因爲本發明之範 疇由附屬的申請專利範圔所限定而非之前的描述。所有的 改變都在申請專利範圔內,或相當於這些範圔內,係由該 申請專利範圍所包含。 -- I n n I - n J.'^^1 I I —— I —丁 、T (請先閱讀背18之注意事項再填寫本頁) 經沪部中决標準局兵^消费合作社印*''4 22 本紙张尺度適用中國囤家標孪(<:奶)/\4规格(210>< 297公釐)R + j2nfL The ringing frequency is about 1MHz. According to equation (2), the ringing current "i" can be suppressed to a small value by increasing the impedance Z. The ringing current "Γ is converted into Joule heat by the resistance element R of the ferromagnetic substance 10 shown in Equation (1). Therefore, the present invention can satisfactorily reduce the ringing phenomenon. This can be achieved regardless of the input dipole Body 8a is provided in --- I--I ......-· I--II takes -II I!-I-------- .-. (Please read the Note: Please fill in this page again.) This paper size is applicable to the Chinese storehouse standard (CNS) Λ4 specification (210 X297 male f) A7 ____B7 5. Description of the invention (Π) The input terminal of the high voltage coil 5. That is, the invention The ringing reduction can be effectively applied to the feedback transformer having the wheel-in diode 8a provided at the input of the high-voltage coil 5 'which has a better arrangement to improve high-voltage adjustment characteristics and voltage durability characteristics (ie, Reliability). The ringing reduction of the present invention requires less resistance compared to the conventional device described above. The conventional device only relies on the ringing reduction achieved by converting resistance into Joule heat. Therefore, the feedback transformer is provided with less heat from Joule heat. And a small temperature increase is possible. In other words, the invention It is possible to reduce the size of the feedback transformer under the control, and the limitation makes the temperature increase must be suppressed within a predetermined range. Furthermore, when the input diode 8a is connected to the input terminal of the high voltage coil 5, the high voltage The approximate center of the winding portion 5a of the coil 5 becomes a neutral voltage point. This divides the generated pulses into positive and negative pulses. Therefore, its considerable distributed capacitance is reduced. Higher-order resonance can be achieved. When suppressing higher-order loads changes In addition, the peak 该 of the pulse is reduced to half 値. This improves the reliability. Figures 7A to 7D show waveforms actually measured by the feedback transformer, which has the input diode 8a connected to the high Input terminal of the voltage coil 5. Fig. 7A shows a waveform obtained when ringing reduction is not performed (that is, the ferromagnetic substance 10 is not provided). Fig. 7B shows when the ferromagnetic substance 10 is a 0.1 mm thick stainless steel foil ( SUS430) obtained _____10 ___- _ This paper wave scale is applicable to the Chinese National Standard (CNS) Λ4 specification (210X 297 cm) ---- n ---- ^ II in I _ T ^,-° (Please Read first Note for the back, please fill out this page again) _406276 b7___ V. Explanation of the invention (d) Waveform. Figure 7C shows the waveform obtained when the ferromagnetic material is 10-0.03mm thick iron foil. Figure 7D shows when The ferromagnetic material 10 is a waveform obtained when the alloy foil is 0.2 mm thick. As illustrated in FIG. 4A, the ferromagnetic material 10 has a circumference length approximately equal to one week, and the notch (that is, the slit 10s) is located before the winding. The magnetic flux between the edge and the trailing edge with respect to the magnetic core 1 is not formed. The ferromagnetic substance 10 is inserted between the low-voltage coil 3 and the high-voltage coil 5. In each of FIGS. 7A to 7D, the upper waveform indicates that the input current of the low-voltage coil 3 has a vertical axis indicating its current number. The lower waveform indicates that the inductance of the high-voltage coil 5 has a vertical axis indicating the voltage number 値. In each figure, the horizontal axis represents time. As shown in the obvious comparison between FIGS. 7A and 7B to 7D, the ringing phenomenon can be sufficiently reduced according to the present invention by using a ferromagnetic substance between the low voltage coil 3 and the high voltage coil 5 although not shown, the same The test is performed by replacing the ferromagnetic substance 10 with other substances with non-ferromagnetic properties, such as a thick copper foil non-ferromagnetic substance 'such as 0.3ηπη thick lead foil is another non-ferromagnetic substance such as 0.2mm thick phosphorus The green mesh foil is another non-ferromagnetic material, and the aluminum box such as a 02mm thick is a paramagnetic material. In each case, the measurement results are the same as shown in Figure 7A. In other words, no effect occurs that will reduce the ringing phenomenon. ---_ _ The size of this paper is appropriate; fl towel materials 4 (CNs) Λ4 specifications (2 丨 (); ^ 297 public fee) i -i I-·---I— i / ^,--i —Fn ^ i ^^ 1 n! Hu— (Please read the notes on the back before filling out this page) 406276 37 V. Description of the invention (θ) From the previous description, it is understood that the low voltage coil 3 is provided. The ferromagnetic substance 10 between the high-voltage coil 5 and the high-voltage coil 5 is effective for suppressing the ringing phenomenon. FIG. 9 shows a feedback transformer according to another embodiment of the present invention. The feedback transformer shown in FIG. 9 is a so-called partially wound feedback transformer, in which a plurality of cylindrical grooves 4b are arranged in the axial direction of the high-voltage coil bobbin 4. Each groove 4b extends in the circumferential direction of the high-voltage coil bobbin 4. The high-voltage coil 5 is wound around the cylindrical grooves 4b, respectively. In FIG. 9, an insertion diode 8 is installed at an intermediate position of the high-voltage coil 5. The output diode 8 b is mounted on the trailing edge of the high-voltage coil 5. An input diode 8 a is provided at the leading edge of the high-voltage coil 5. As explained in the foregoing description, the present invention provides a feedback transformer including a low-voltage coil bobbin for winding the low-voltage coil as a primary winding, a magnetic core is inserted into the low-voltage coil bobbin, and a high-voltage coil bobbin is connected The low-voltage coil is used to wind a high-voltage coil as a secondary winding, and a ferromagnetic substance is inserted between the low-voltage coil and the high-voltage coil. With this arrangement, providing a feedback transformer can sufficiently reduce the Ringing phenomenon, low cost, reduced man-hours required during the manufacturing process, delicate size, less temperature increase, superiority and reliable performance in high voltage adjustment features and insulation capabilities are possible. _21_ This paper is a Chinese standard (CNS) in Shizhou. Λ4 is present (2 丨 0X 297 cm) --I n-I n I l. ^^ —— I ^^, T (Please read the note on the back first Please fill in this page for matters) A7 B7 406276 V. Description of invention u. The invention is implemented in many ways without departing from the spirit of essential features. The embodiments described above are also intended to be representative and not limiting, since the scope of the invention is defined by the appended patent application rather than the foregoing description. All changes are within the scope of the patent application, or equivalent, and are included in the scope of the patent application. -I nn I-n J. '^^ 1 II-I-Ding, T (Please read the notes on the back of 18 before filling out this page) Printed by the Bureau of Standards and Decision of the Ministry of Shanghai ^ Consumer Cooperative Association *' ' 4 22 The size of this paper is applicable to Chinese storehouse standard (<: milk) / \ 4 size (210 > < 297 mm)

Claims (1)

經濟部中央標準局員工消費合作社印製 A8 B8 _^06276_§_ 六、申請專利範圍* 1. —種產生高電壓之反饋變壓器,其包括: 一低電壓線圈繞線管用於纏繞低電壓線圈充當一原繞 組; 一磁芯被插入該低電壓線圈繞線管; 一高電壓線圈繞線管聯接該低電壓線圈繞線管用於纏 繞一高電壓線圈充當次繞組;及 一鐵磁性物質被插入介於該低電壓線圈及該高電壓線 圈間。 2. 如申請專利範圍第1項所述之反饋變壓器,其中該 高電壓線圈包括數個連的接繞組部分經由被提供介於相鄰 繞組部分間之插入二極體,及輸入二極體被連接至相對該 高電壓線圈之電壓輸入端該數個繞組部分之第一繞組部分 之輸入端》 3. 如申請專利範圍第1項所述之反饋變壓器,其中該 低電壓線圈繞線管係圓柱的,而且該鐵磁性物質係圓柱體 具有中空空間用於環繞該低電壓線圈被纏繞該低電壓線圈 繞線管,以至於相對該磁芯之磁通量沒有形成封閉迴路。 4. 如申請專利範圍第1項所述之反饋變壓器,其中該 高電壓線圈繞線管具有數個溝槽以該高電壓線圈繞線管之 軸方向排列,每個溝槽以該高電壓線圈繞線管之圓周方向 延伸,及該高電壓線圈被分別地纏繞在該數個溝槽。 ---------r 装------訂 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS ) A4規格(210X 297公釐) AS B8 C8 D8 406276 六、申請專利範圍 5. 如申請專利範圍第3項所述之反饋變壓器,其中至 少一以該磁芯之軸方向延伸之縫被形成在鐵磁性物質。 6. 如申請專利範圍第3項所述之反饋變壓器,其中至 少一開口被形成在鐵磁性物質。 7.如申請專利範圍第3項所述之反饋變壓器,其中該 鐵磁性物質包括以該磁芯之軸方向被分隔之數個部分,以 便該鐵磁性不直接地面對該磁芯之缺口。 111 m I— j 1--- ----- « I In rJJ,--------HI m ------- 穿 、-° (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標华(CNS ) Μ規格(210X297公釐)Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A8 B8 _ ^ 06276_§_ VI. Patent Application Scope * 1. A feedback transformer that generates high voltage, which includes: A low voltage coil bobbin used to wind the low voltage coil as A primary winding; a magnetic core is inserted into the low-voltage coil bobbin; a high-voltage coil bobbin is connected to the low-voltage coil bobbin for winding a high-voltage coil as a secondary winding; and a ferromagnetic substance is inserted into the medium Between the low voltage coil and the high voltage coil. 2. The feedback transformer as described in item 1 of the scope of patent application, wherein the high voltage coil includes a plurality of connected winding sections via an interposed diode provided between adjacent winding sections, and the input diode is The input terminal of the first winding section of the winding sections connected to the voltage input terminal of the high voltage coil. 3. The feedback transformer as described in item 1 of the scope of patent application, wherein the low voltage coil bobbin is a cylinder Moreover, the ferromagnetic material cylinder has a hollow space for winding the low-voltage coil bobbin around the low-voltage coil, so that a closed loop is not formed with respect to the magnetic flux of the magnetic core. 4. The feedback transformer according to item 1 of the scope of patent application, wherein the high-voltage coil bobbin has a plurality of grooves arranged in the axial direction of the high-voltage coil bobbin, and each groove uses the high-voltage coil. The bobbin extends in the circumferential direction, and the high-voltage coil is wound around the grooves, respectively. --------- r Packing ------ Order (Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 specification (210X 297 mm) AS B8 C8 D8 406276 6. Scope of patent application 5. The feedback transformer as described in item 3 of the scope of patent application, wherein at least one slit extending in the axial direction of the magnetic core is formed in a ferromagnetic substance. 6. The feedback transformer according to item 3 of the scope of patent application, wherein at least one opening is formed in a ferromagnetic substance. 7. The feedback transformer according to item 3 of the scope of the patent application, wherein the ferromagnetic substance includes a plurality of portions separated by an axial direction of the magnetic core so that the ferromagnetic material does not directly face a gap of the magnetic core. 111 m I— j 1 --- ----- «I In rJJ, -------- HI m ------- Wear,-° (Please read the precautions on the back before filling (This page) Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. The paper size is applicable to China National Standards (CNS) M specifications (210X297 mm)
TW087107692A 1997-05-28 1998-05-19 Flyback transformer TW406276B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15457197 1997-05-28
JP9203793A JPH1145814A (en) 1997-01-10 1997-07-14 Flyback transformer

Publications (1)

Publication Number Publication Date
TW406276B true TW406276B (en) 2000-09-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
TW087107692A TW406276B (en) 1997-05-28 1998-05-19 Flyback transformer

Country Status (3)

Country Link
KR (1) KR19980087386A (en)
CN (1) CN1200622A (en)
TW (1) TW406276B (en)

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KR19980087386A (en) 1998-12-05
CN1200622A (en) 1998-12-02

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