M278026 八 新型說明： 【新型所屬之技術領域】 本創作係關於一種多燈管平衡變壓器及驅動電路，特 別是關於一種冷陰極螢光燈管（CCFL)之燈管均流電路中 所使用的變壓器及驅動電路。 【先前技術】 冷陰極螢光燈管（CCFL，Cold Cathode FluorescentM278026 Description of the eight new types: [Technical field to which the new type belongs] This creation is about a multi-lamp balancing transformer and driving circuit, especially about a transformer used in a current sharing circuit for a cold-cathode fluorescent lamp (CCFL). And driving circuit. [Previous Technology] Cold Cathode Fluorescent Tubes (CCFL, Cold Cathode Fluorescent
Lamp)已知係使用於液晶顯示面板（LCE) Panel)中做為 月光模組（Backlight Module)之光源。此等冷陰極螢光 丈且官係由一稱為換流器（inverter)之驅動電路所驅動。 由=技術進步及消費者的需求，LCD面板尺寸不斷增大， ，得單T燈管已無法滿足其照明，因而需要使用二個或更 多個燈官。為了確保LCD面板的亮度均勻，必須隨時調節 電Ϊ’Λ流經每一燈管之電流量相等。但由於冷 二η冤二燈>官係咼度不穩定且具有負阻抗特性等種種原 ‘電？阻抗很難維持一致，造成各燈管阻抗改變而 使^無法達成相等。各燈管之間電流不相等，除了合使 勻外，電流太大的燈管還會減短壽命，使得：燈 官間:老化速率（Aging Rate)不一致。使仔各义且 明^考弟^ —圖’為習知技術揉用- /te?依a 器來平衡吨冷陰極螢光燈管電流之的平^變壓 透過昇i雙器Tr提供燈管==圖。其中控 查光所需之電壓電炉 L2、L3、L4) 器的線圈組抗特性^楞次定理，、讓ί4=利用平衡變屢 工作電流達到平衡，當電UW2、讓= 管及娜 相同時，流 M278026 過=變m和平衡變塵器了2各線圈之電流也相等， :二二^⑴在平衡變麗器^和電流…^在平 :、'交壓器T2線圈上分別產生的磁動勢也相等，並且相互 2 ’因此在平衡㈣器T1和平衡變星器T2中並無磁通 互通0 η同時’平衡_T1和平衡_了2中產生的漏磁 各自經外侧的空氣間隙完成迴路，但是由於空氣間 二阻^因此此迴路所引致的電感效應-般可以忽 =°再者電壓檢知保護電路2G擷取燈管的工作電流 、、12、13、14並根據該些工作電流n、12、13、14予 =換成電壓傳給該控制器1〇，控制器1〇根據該誤差訊 于=制調整能量輸出，供給U、L2、L3、L4發光所 系之電墨電流。 但是上述習知技術中，只能η、ί2或Μ、Μ獨立平 :，另!卜平衡交壓益使用的數量會隨著燈管的數量而增 一在第圖中#知，若是要驅動四根燈管則需同時使用 二個平衡變壓器Τ1、Τ2,這不僅讓整個驅動電路體積變 ，同時成本也增加，並且於組裝時更是浪費人力及工時。 【新型内容】 雷敗有^ Μ Μ ’本創作提供一種多燈管平衡變壓器及驅動 ^ 藉由一具有二個封閉磁通路徑的平衡變壓器，分別 =封閉磁通路棱上纏繞有二線圈，並該些線圈阻數皆為相 1利用線圈組抗特性及楞次定理，得以讓 圈的燈管’其工作電流達到平衡。 — 本創作多燈管平衡變壓器連接於多個燈管，用以平衡 M278026 2管：Γ作電流，包括有：一磁芯，具有-第-側柱及 弟-側柱，在該第一側柱與該第二侧柱間設置有 二且=中柱分別與該第一側柱、該第二側柱形成二個封 閉磁通路徑；二個第一線圈分別以反方向捲緩於 m第二線圈分別以反方向捲繞於該第二側柱;苴 —線圈與該二第二線圈之線_數相同，利用 4圈阻抗㈣及楞次定理，得以祕 作電流達到平衡。 及線圈的工 :者：本創作具多燈管平衡_之驅動電路，係使 义之夕燈官平衡變壓器連接多個燈管，同二 過—昇M變壓器提供電壓電流到該些燈管；再^ k接於該二個第一線圈、該二個第二線 :?流檢知保護電路，來檢知流過該二個第'二= 的;其中’該電流檢知保護電路將燈管 作電机1轉換成電壓傳送給該控制器 以控制並提供足夠的能量給該些燈管使用。 制益仔 ^如此，本創作的驅動電路係使用多燈管平衡變屏哭1 了以同時平衡多根燈管，使得驅動電路體積較習知^: :、費::成广艮著降低，並且於組裝時更是 浪費的人力及工時，以增進產業上的競爭力。 斤 ί 了 查下ί員能更進一步瞭解本創作特徵及技術内 4心閱以下有關本創作之詳細說明與附圖， 回考與說明用，並非用來對本創作加以限制 睛茶考第二圖，為本創作多燈管平衡變麗器動作原理 M278026 不意圖。本創作多燈管平衡變壓器30包括有··一具有一 第…侧柱3〇5及一第二側柱307，且在該第一側柱305與 該第二侧柱307間設置有一中柱3〇6的磁芯，利用該中柱 306分別與該第_侧柱3()5、該第二侧柱3Q7形成二個封 ^通路徑；在第一餘305上分別以反方向捲繞有二個 弟μ線圈3(H ’在第二侧柱3〇7上分別以反方向捲繞有二 固罘-線圈303，其中，該二第-線圈301與該二第二線Lamp) is known to be used as a light source for a backlight module in a liquid crystal display panel (LCE) Panel. These cold-cathode fluorescent lamps are driven by a driving circuit called an inverter. Due to technological advances and consumer demands, the size of LCD panels has continued to increase, and single T-tubes have been unable to meet their lighting requirements, requiring the use of two or more lamp officials. In order to ensure that the brightness of the LCD panel is uniform, it is necessary to adjust the amount of current flowing through each lamp tube at the same time. However, due to the coldness of the two lamps, the official system is unstable and has various negative impedance characteristics. It is difficult to maintain the same impedance, which causes the impedance of each lamp to change, making it impossible to achieve equality. The currents between the lamps are not equal. In addition to the uniformity of the current, the lamps with too much current will shorten the life, so that the lamp officials: the Aging Rate is inconsistent. Make your own ideas ^ Kao ^ ^-Figure 'is a conventional technology to use-/ te? According to a device to balance the ton of cold cathode fluorescent lamp current flat ^ Transformer to provide lamps through the i dual device Tr Tube == Figure. Among them, the voltage resistance of the electric furnaces L2, L3, and L4 required to control the light, and the coil group impedance characteristics of ^ Lenz's theorem, let ί 4 = use the balance to change the working current to achieve equilibrium, when the electric UW2, let = tube and Na are the same , The current of M278026 is equal to m and the balance of the dust collector. The currents of the two coils are also the same:: ====================================================================================================================================================================================================================== = The magnetomotive forces are also equal, and there is no mutual magnetic flux between the balancer T1 and the balance transformer T2. Therefore, the magnetic flux leakages generated in the balance_T1 and the balance_2 pass through the outer air gap. Complete the circuit, but due to the two resistances in the air ^ so the inductance effect caused by this circuit can usually be ignored = ° Furthermore, the voltage detection protection circuit 2G captures the working current of the lamp, 12, 13, 14, and according to these The working currents n, 12, 13, and 14 are changed to voltage and transmitted to the controller 10, and the controller 10 adjusts the energy output based on the error signal to the U, L2, L3, and L4 light sources. Ink current. However, in the above conventional technologies, only η, ί2, or Μ, Μ can be used independently. In addition, the number of balanced cross-pressure benefits will increase with the number of lamps. In the figure, if you want to drive The four lamps need to use two balancing transformers T1 and T2 at the same time, which not only changes the volume of the entire driving circuit, but also increases the cost, and wastes manpower and man-hours during assembly. [New content] Thunder defeat ^ Μ Μ 'This creation provides a multi-lamp balancing transformer and driver ^ By a balancing transformer with two closed magnetic flux paths, respectively = two coils are wound around the edge of the closed magnetic path, and These coil resistances are all phase 1. Utilizing the impedance characteristics of the coil system and Lenz's theorem, the lamp current of the coil can be balanced. — This creative multi-lamp balancing transformer is connected to multiple lamps to balance M278026 2 tubes: Γ as the current, including: a magnetic core with -first-side pillar and younger-side pillar, on the first side There are two and = between the pillar and the second side pillar; the middle pillar forms two closed magnetic flux paths with the first side pillar and the second side pillar, respectively; the two first coils are rolled in opposite directions to slower than The two coils are wound around the second side column in opposite directions respectively; 苴 —the number of lines of the coil and the second and second coils is the same. Using the four-turn impedance ㈣ and Lenz's theorem, the secret current can be balanced. And the coil worker: The driver of this lamp has a multi-lamp balancing circuit, which is used to connect the lamp tube of Yixi Languan to the transformers, and to provide voltage and current to the lamps with two-liter transformers; Then ^ k is connected to the two first coils and the two second wires: a current detection protection circuit to detect the current flowing through the two second two; where the current detection protection circuit turns the lamp The tube-operating motor 1 converts the voltage to the controller to control and provide sufficient energy for the lamps. Zhiyi Zi ^ In this way, the driving circuit of this creation uses a multi-lamp balance screen to balance multiple lamps at the same time, making the driving circuit volume smaller than conventional ^::, fee :: Cheng Guanggen. In addition, manpower and man-hours are wasted during assembly to enhance the competitiveness in the industry. The following details and illustrations of this creation are included in the book for review and explanation purposes, and are not intended to limit the creation of this creation. The second picture For the purpose of this article, the principle of M278026 multi-tube balance transformer is not intended. The creative multi-lamp balancing transformer 30 includes a first side post 305 and a second side post 307, and a middle post is provided between the first side post 305 and the second side post 307. The magnetic core of 3〇6 uses the central pillar 306 to form two closed paths with the first side pillar 3 () 5 and the second side pillar 3Q7, respectively, and is wound in the opposite direction on the first remaining 305. There are two younger μ coils 3 (H ′ on the second side post 307 are respectively wound with two solid-coil-coils 303, wherein the second-coil 301 and the second-second wire
Ϊ 303之線難數相同，利用線圈阻抗特性及楞次定理， 流過燈管及線圈的工作電流（n、I2、I3、⑷達 本創作多燈管平衡變壓器3〇中，兮- 分別接收該工作電流n V二-線圈301 味太口 / 同時於第一側柱3〇5中產 I目白磁通，该二磁通並流通於中柱306盥該第一 :主:=成的封閉磁通路徑上呈現出咖 卡^電机I、2平衡時，該二磁通其磁通量大小相同、 =反’此時封閉磁通路徑上即無 ° 机不平衡則會於封閉磁通路徑上產生磁通量4右疋電 同地’多燈管平衡變星哭 -μ 同樣分別接收有工作電流:中5亥：二線圈3〇3 中產生方向相反的磁、s ，亚且於弟二側柱307 第二側柱3G7m該二磁通並流通於中柱_與該 路。如果工作電流13] 見出獨立的越 小相同、方向相反，此’該二磁通其磁通量大 在。若是電流不核目Γ 通路徑上即無磁通量存 上述中封閉磁通路徑上產生磁通量。 ’、兩個E子狀磁芯或由一個E字狀磁芯 M278026 =-上字狀磁芯或由兩個门字狀磁 X 了芯上:該二個第-線圈附別連接有二: :: 流過該燈管之工作電流（1卜12)，且： t 05巾形成互斥的磁通。同樣，該二個第-線圈 工作電流⑴、⑷，且: 流過該燈管之 通。再者，該第 側柱303中形成互斥的磁 ^ ^ ^側柱305與第二側柱307上進一步纏植 有一弟一辅助線圈302盥一第—結## π Q ^ 工作電流（η、I2、I3 :、14 線圈304，於燈管之 一第一修正㈣觸鱼_第）_不^衡;；係分別感應產生 ，、 乐一修正電麼AV2。 嫩芦？第三圖’為本創作第-實施例採用多燈管平衡 交壓态來平衡燈管工作雷、、六 /且g卞衡 本創作係以驅叙4 4 之驅動電路架構示意圖。在此 原理，Π 根燈管為例來說明本創作驅動電路的 原理但亚不侷限於此。 在第貝知例中，本創作具多燈管平衡變壓哭之驅動 =接於:個燈管⑴、L2、L3、u= 制™ 10，該控制器1〇透 流到該些燈管（U、L2 Μ@Τι·提供電廢電 30,其結構及動作原理#/」⑷；—多燈管平衡變壓器 壓器30上以反方向所捲^二圖所述’該多燈管平衡變 二線園A、 斤捲％的二個第一線圈301與二個第 ί以Γ刀別對應連接於該些燈管⑴、L2、L3、L4)，Ϊ 303 has the same number of wires. Using the impedance characteristics of the coil and Lenz's theorem, the working current flowing through the tube and the coil (n, I2, I3, and Yidaben's multi-lamp balancing transformer 30), Xi-receive separately The working current n V two-coil 301 Weitaikou / Simultaneously produces a white magnetic flux in the first side pillar 305, and the two magnetic fluxes circulate in the center pillar 306. The first: main: = Cheng's closed magnetic field When the kaka ^ motors I and 2 are balanced on the flux path, the two magnetic fluxes have the same magnetic flux magnitude, == 'At this time, there is no ° on the closed flux path, and the machine imbalance will be generated on the closed flux path. The magnetic flux 4 is the same on the same ground as the multi-lamp balance variable star cry-μ also receives working currents respectively: Zhong 5 Hai: the two coils 303 generate opposite directions of magnetism, s, and the two sides of the column 307 The two side poles 3G7m and the two magnetic fluxes circulate in the middle pole _ and the road. If the operating current 13] is seen to be smaller and the same, the opposite direction, the 'the two magnetic fluxes have a large magnetic flux. If the current is not nuclear Γ No magnetic flux is stored on the flux path, and the magnetic flux is generated on the closed magnetic flux path described above. The magnetic core is either an E-shaped magnetic core M278026 =-the upper-shaped magnetic core or the two gate-shaped magnetic X on the core: the two second-coil attachments are connected to two: :: flowing through the lamp tube The working current (1, 12), and t 05 form mutually exclusive magnetic fluxes. Similarly, the two -coil working currents ⑴, ⑷, and: flow through the lamp tube. Furthermore, the first A mutually exclusive magnet is formed in the side pillar 303. A side coil 305 and a second side pillar 307 are further wrapped with a younger auxiliary coil 302 and a first-knot ## π Q ^ working current (η, I2, I3: , 14 coils 304, one of the first modification of the lamp to touch the fish _ first) _ unbalance ;; is induced by the induction, respectively, Leyi modified the electric AV2. Nenlu? The third picture 'for this creation- The embodiment adopts a multi-lamp balanced AC voltage state to balance the lamp working mine, six, and six. This creation is based on the driving circuit architecture diagram of driving 4 4. In this principle, the Π lamp is taken as an example to illustrate the creation. The principle of the drive circuit is not limited to this. In the case of Dibei, this work has a multi-lamp balanced transformer drive = connected to: a lamp ⑴, L2, L3, u = system ™ 1 0, the controller 10 permeates to the lamps (U, L2 Μ @ Τι · provides electrical waste electricity 30, its structure and operating principle # / ”⑷; — multi-lamp balance transformer voltage transformer 30 According to the directions shown in the second picture, the two first coils 301 and two first coils 301 of the multi-lamp balanced transformer second-line park A and the second coil are connected to the lamps ⑴, L2, and L2 respectively. L3, L4),
二取“過之工作電流（U、12、13、⑷，及一電流 檢知保護電路2〇，分別j M '，L 個第二後圈你 該二個第一線圈301、該二 -線itn 該控制器10，用來檢知流過該二個第 線圈如、該二個第二線圈咖 M278026 ”保護電路20將燈管⑴、L2、L3、L4)的工作泰 ς:轉換成電璧（n、12、13、⑷傳送給該控制器二 從侍控制器10得以控制並提供足夠的電壓與電流（H、 12、13、14)給該些燈管（L1、L2、L3、U)使”用。、 本創作具多燈管平衡變愿器之驅動電路，係利 汉 ^裡器具有相同的線圈隨，#由該線圈阻抗特性 楞-人定理，得以讓流過燈管⑴、L2、L 的工作雷户r τ, το το τη y 第一 ϋ: )達到平衡。同時，該二個 圈301分別連接有—燈管，並接收流過該燈管之工 、i ^ =於該第一侧柱3 G 5與該中柱3 0 6形成的封閉磁 =一瓜〜產生互斥的磁通。該二個第二線圈3〇3分別連接 垃官，並接收流過該燈管之工作電流，且於該第二側 柱307與該中柱3〇6形成的封閉磁通路徑中產生互 ^該二封閉磁通路徑讓第一線圈斯與第二線圈3〇3所 產生的磁通量得以分開且獨立形成磁通迴路，而不互相干 擾’以達到保護燈管效果。 配^第三圖’請參考第四圖，為本創作第二實施例採 用多，官平衡變壓ϋ來平衡燈管玉作電流之驅動電路架 構示〜目纟此本創作係以驅動4根燈管為例來說明本 作驅動電路的原理，但並不侷限於此。 、第一貝％例與第一實施例差異處係在於，第二實施例 進一步包括有一第—辅助線目302捲繞於該第一側柱 305 1第-辅助線圈3G2連接於該電流檢知保護電路 20:係在該些燈官工作電流不平衡下，感應產生第一修正 屯壓AVI，並傳送到該電流檢知保護電路2〇。同時進一 M278026 第二輔助線圈3G4捲繞於該第二側柱撕，該 弟一輔助線圈3 0 4連接於节雷户於左彳， 該歧燈管工作電'C 保缦電路2〇,係在 v?7、： 千衡下，感應產生第二修正電壓△ 亚傳送到该電流檢知保護電路2〇。 =作具多燈管平衡變壓器之驅動電路，係使用上述 之夕管平衡變壓器3〇連接多個燈管（U、L2、u、Uh =使用一控制器10透過一昇壓變壓器衧提供電壓電流 職，燈管⑴^…⑷：再藉由—連接於該二個 線圈30卜該二個第二線圈3()3、第—辅助線圈3。2、 弟-輔助線圈304與該控制器1()的一電流檢知保護電路 2〇’來檢知流過該二個第一線圈3(H、該二個第二線圈3〇3 之電”丨(II、12、13、14)及第一修正電壓avi、第二 心正包壓△ V2，其中，該電流檢知保護電路20將燈管 (U、L2、L3、L4)的工作電流量（π、ί2、ί3、14)量 轉換成電壓傳送給該控制器1〇，使得控制器1〇得以控二 並提供足夠的電壓與電流給該些燈管（L1、L2、、U) 使用，並於該些燈管工作電流不平衡下，達到保護燈管 果0 配合第三圖，請參考第五圖，為本創作第三實施例採 用多燈管平衡變壓器來平衡燈管工作電流之驅動電路架 構示意圖。在此本創作係以驅動4根燈管為例來說明本創 作驅動電路的原理，但並不侷限於此。 第三實施例與第一實施例差異處係在於，第三實施例 進一步包括有一第三輔助線圈308捲繞於該中柱3〇6上， 該第三輔助線圈308連接於該電流檢知保護電路2〇，係 11 M278026 在該些燈管工作雷、、☆ 鲁並傳送到；：：干衡下’感應產生-第三修正電屬 、k J忒电流檢知保護電路2〇。 之多燈“衡麼器之驅動電路’係使用上述 同日士你、土 30連接多個燈管（Ll、L2、L3、L4)， ^ 控制益10透過一昇壓變壓器Tr提供帝單+、六 到該些燈管（Ll、L2、iq h、· / 挺么、包壓電流 第一線圈如 —、L4)，再藉由一連接於該二個 盥該巧制哭丨η 個第二線圈3〇3、該第三輔助線圈308 二個：一： 電流檢知保護電路20，來檢知流過該 12、13、ίϊ圈、該二個第二線圈303之電流量（Π、 護電路管心作=7 弋哭：二4)量轉換編傳送給該控制器、10,使得控 γ 10仔以控制並提供足夠的電㈣電流給該些燈管 、、L3、L4)使用，並於該些燈管工作昱常 到保護燈管效果。 卞/、吊下，達 如此，本創作的驅動電路係使用多燈管平衡 得以同時驅動多根燈管，使得驅動電路體積較習ς 成广艮著降低，並且於組裳時更是可以減C 浪費的人力及工時，以增進產業上的競爭力。 是以，本創作完全符合新型專利之進步性要件， ，專利法提出申請，請詳查並准予本案，以保障創作者之 =’。右料之貴審查委員有任何的稽疑，請不吝來函 按’以上所述，僅為本創作最佳之具體實施例 創作之特徵並不偈限於此’任何熟悉該項技藝者在本創作 12 M278026 之領域内，可輕易思及之變化或修飾，皆可涵蓋在以下本 案之專利範圍。 【圖式簡單說明】 第一圖為習知技術採用二個平衡變壓器來平衡四個冷陰 極螢光燈管電流之電路架構圖； 第二圖為本創作多燈管平衡變壓器動作原理示意圖； 第三圖為本創作第一實施例採用多燈管平衡變壓器來平 衡燈管工作電流之驅動電路架構示意圖； 第四圖為本創作第二實施例採用多燈管平衡變壓器來平 衡燈管工作電流之驅動電路架構示意圖；及 第五圖為本創作第三實施例採用多燈管平衡變壓器來平 衡燈管工作電流之驅動電路架構示意圖。 【主要元件符號說明】 習知： 控制器1 〇 昇壓變壓器Tr 燈管 U、L2、L3、L4 電流 II、12、13、14 平衡變壓器ΤΙ、T2 本創作： 控制器10 電流檢知保護電路20 多燈管平衡變壓器30 第一線圈301 13 M278026 第一輔助線圈302 第二線圈303 第二輔助線圈304 第一側柱305 中柱306 第二侧柱307 第三輔助線圈308 第一修正電壓AVI 第二修正電壓AV2 第三修正電壓AV3 燈管 LI、L2、L3、L4 工作電流II、12、13、14 昇壓變壓器TrTake two “over currents (U, 12, 13, and ⑷), and a current detection protection circuit 20, respectively j M ', L second rear loops you two first coils 301, the two-wire itn The controller 10 is used to detect the current flowing through the two second coils, such as the two second coils M278026. The protection circuit 20 converts the work of the lamps (L2, L2, L3, L4) into electricity:璧 (n, 12, 13, and ⑷ are transmitted to the controller 2) The slave controller 10 can control and provide sufficient voltage and current (H, 12, 13, 14) to the lamps (L1, L2, L3, U) 用 ". The drive circuit of the multi-lamp balance transformer is created in this design. It has the same coils as the Li Han ^ li. #The impedance characteristic of this coil is the Len-Theorem, which allows the lamp to flow through the lamp. The working thunderbolts r, τ, το το τη y of ⑴, L2, and L are balanced. At the same time, the two circles 301 are respectively connected to a lamp, and receive the work flowing through the lamp, i ^ = Enclosed magnetism formed by the first side pillar 3 G 5 and the middle pillar 3 0 6 = a melon ~ produces a mutually exclusive magnetic flux. The two second coils 3 03 are connected to the garbage officer respectively, and receive and flow through The working current of the lamp tube generates mutual currents in the closed magnetic flux path formed by the second side pillar 307 and the center pillar 306. The two closed magnetic flux paths allow the first coil and the second coil to be 303. The generated magnetic flux can be separated and independently formed magnetic flux loops without interfering with each other to achieve the effect of protecting the light tube. With the third picture, please refer to the fourth picture. This second embodiment of the creation uses more and more official balance. The structure of the driving circuit for balancing the current of the lamp tube as a result of pressing the lamp tube ~ The purpose of this work is to explain the principle of the driving circuit of this lamp by taking the drive of 4 lamps as an example, but it is not limited to this. The difference between this example and the first embodiment is that the second embodiment further includes a first auxiliary wire mesh 302 wound around the first side post 305, a first auxiliary wire 3G2 connected to the current detection protection circuit 20: Under the imbalance of the working currents of these lamp officials, a first correction voltage AVI is induced and transmitted to the current detection protection circuit 20. At the same time, a second auxiliary coil 3G4 M278026 is wound around the second side post, The younger one auxiliary coil 3 0 4 is connected to Jieleihu On the left, the lamp's working circuit 'C protection circuit 20, which is under v? 7: thousand, induces the generation of a second correction voltage Δsub and sends it to the current detection protection circuit 20. = 作 具The driving circuit of the multi-lamp balancing transformer is to use the above-mentioned tube balancing transformer 30 to connect multiple lamps (U, L2, u, Uh = using a controller 10 to provide voltage and current through a boost transformer). Tube ⑴ ^ ... ⑷: and then connected to the two coils 30, the two second coils 3 () 3, the first-auxiliary coil 3. 2, the younger-auxiliary coil 304 and the controller 1 () A current detection protection circuit 20 ′ to detect the electricity flowing through the two first coils 3 (H, the two second coils 30) ”(II, 12, 13, 14) and the first correction Voltage avi, second heart positive envelope pressure ΔV2, wherein the current detection protection circuit 20 converts the amount of working current (π, ί 2, ί 3, 14) of the lamp tube (U, L2, L3, L4) into a voltage It is transmitted to the controller 10, so that the controller 10 can be controlled and provide enough voltage and current for the lamps (L1, L2, U) to use, and work on the lamps. When the current is unbalanced, the protection lamp is achieved. In conjunction with the third diagram, please refer to the fifth diagram, which is a schematic diagram of the driving circuit structure of the third embodiment of the invention using a multi-lamp balancing transformer to balance the working current of the lamp. Here, the author takes driving four lamps as an example to explain the principle of the driving circuit of the author, but it is not limited to this. The difference between the third embodiment and the first embodiment is that the third embodiment further includes a third auxiliary coil 308 wound on the center pillar 306. The third auxiliary coil 308 is connected to the current detection protection. The circuit 20 is the 11 M278026, and the operation of these lamps is transmitted to the Lu: and: ：: under the balance, 'inductive generation-the third modified electrical, k J 忒 current detection protection circuit 20. The drive circuit of the multi-lamp “balancer” is to connect multiple lamps (Ll, L2, L3, and L4) using the above-mentioned Shishi You, Tu 30, ^ Control Yi 10 provides Di Dan +, Six to the lamps (Ll, L2, iq h, · / Ting, the first coil of the encapsulation current such as-, L4), and then connected to the two bathrooms to make a smart cry η η second There are two coils 303 and the third auxiliary coil 308: one: a current detection and protection circuit 20 to detect the amount of current (Π, protection) flowing through the 12, 13, loops, and the two second coils 303 Circuit tube operation = 7 wailing: 2) 4) The amount conversion program is transmitted to the controller, 10, so that γ 10 is controlled to provide and provide sufficient electric current to these lamps, L3, L4), And I often work on these lamps to protect the effect of the lamps. 卞 /, Hanging down, as such, the driving circuit of this creation uses multiple lamp balancing to drive multiple lamps at the same time, making the driving circuit more compact. Cheng Guanggen has reduced, and he can reduce the wasted manpower and man-hours of C when he is in charge, so as to improve the competitiveness in the industry. Fully in line with the progressive requirements of new patents, the patent law filed an application, please check and grant this case in detail to protect the creator = '. The right review committee has any suspicions, please write the letter as described above The characteristics of the creation of the best embodiment of this creation are not limited to this. 'Any person skilled in the art can easily think of changes or modifications in the field of this creation 12 M278026, which can be covered in the following case The scope of patents. [Schematic description of the diagram] The first picture is a circuit architecture diagram of the conventional technology using two balancing transformers to balance the current of four cold cathode fluorescent lamp tubes; Schematic diagram; The third diagram is a schematic diagram of the driving circuit architecture of the first embodiment of the invention using a multi-lamp balancing transformer to balance the working current of the lamp; the fourth diagram is the second embodiment of the creation using a multi-lamp balancing transformer to balance the lamp A schematic diagram of the driving circuit structure of the tube working current; and the fifth figure is the third embodiment of the creative use of a multi-lamp balancing transformer to balance the lamp working power Schematic diagram of the drive circuit structure. [Description of the symbols of the main components] Knowing: Controller 1 〇 Step-up transformer Tr Tube U, L2, L3, L4 Current II, 12, 13, 14 Balancing transformer TI, T2 This creation: Controller 10 Current detection protection circuit 20 Multi-lamp balance transformer 30 First coil 301 13 M278026 First auxiliary coil 302 Second coil 303 Second auxiliary coil 304 First side post 305 Middle post 306 Second side post 307 Third auxiliary coil 308 First correction voltage AVI Second correction voltage AV2 Third correction voltage AV3 Lamps LI, L2, L3, L4 Operating current II, 12, 13, 14 Step-up transformer Tr
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