TWI243525B - High frequency power source apparatus - Google Patents

Abstract

The present invention is a high frequent power source apparatus, it can supply stable DC power source to load. Application to a precision voltage control circuit, which applicable to the pulse frequency modulation (PFM) circuit. The circuit can be the cold cathode fluorescent lamp (CCFL) tubes getting stable high frequent voltage and earn the optimal emitting efficiency. The circuit also has protected circuit to avoid the CCFL tubes injury in the, overload voltage and low voltage. The circuit can also be applicable to TFT LCD TV, or others large LCD panels, and develop the best display effect of the LCD tubes.

Description

1243525 玫、發明說明： 【發明所屬之技術領域】 本發明係一種高頻電源裝置，可供應穩定之直流電源於負載，亦可應 用於精密電壓控制電路所組成之脈波頻率調變（PFM)電路，可使冷陰極 g群得到穩定之供電高頻電壓，以得最佳之發光效率及提高其光源品質， 並設有過電壓及低電壓保護電路，以保護冷陰極管群之安全，而進一步應 用於TFT LCD TV或其他大型LCD面板上，以發揮LCD管群最佳之顯示 致果。 【先前技術】 習知冷陰極管使用在LCD監視器之背光源上，一組變換器〇nverter) -般點亮-支或二支冷陰極管，其用在大型LCD監視器或電視大型lcd 螢幕上，則需採用五組或十組以上之變換器，此時將有以下之缺點： 1.各組變換器之高頻工作頻率多少均有差異，因此在LCD監視器上會產生 多種干擾頻率，增加電磁干擾去除技術之成本負擔。 2·多組賴器之高觀壓輸出大小多少會有些不同，因此影響冷陰極管之 亮度不一，影響LCD監視器之品質。 3. 採用多組變換器之成本較單一變換器之成本高。 4. 需再設置一直流變換器，而增加成本。 因此’如何針對上述㈣冷陰極管在LCD監視！!之縣源上之缺 點，提出-種新穎的解決方案，設計[種冷陰極管群保護電路，並且以 脈波頻率調變（PFM)之精密穩定龍之技術，轉持L(：D監視器品質， 且可以解決習知多組變換器鮮干擾、構造複雜及成本高之缺失，長久以 1243525 來一直是使用者殷切盼望及本發明人欲行解決之困難點所在，而本發明人 基於多年從事於電子產業的細研究、開發之實務經驗，乃思及改良之意 心，經多方设计、探討、試作樣品及改良後，終於研究出一種冷陰極燈管 之保濩電路’以解決上述之問題。 【發明内容】 為了有效提供在大型或超大型LCD監視器或TFT LCD τν等之背光源 需求： 本發明之第1目的提供一脈波頻率調變（PFM)之精密穩定電壓之裝 置，以改善習知無法穩壓供電於冷陰極管（CCFL)管群之缺失。 本發明之第2目的提供-穩定及高效率之直流電源於負載。 本發明之第3目的為提供一冷陰極管群保護裝置，以解決習知多組變 換器之缺失。 本發明之第4目的仍應用單—高頻電源，以解決習知多組變換器頻率 干擾及成本高之缺失。 本發明之第5目的為提供大型或超大型之LCD監視器、LCD電視榮 幕、LCD廣告設施等背光源之需求。 本發明之第6目的為提供較佳之硬體電路，以證明本案能達成其目的 與功效，並可據以實施。 為了解決習知欲得敎及高效率之纽電源及纽·器細大型lcd 監視器之缺失，本發明有下列之特徵： 1·直流電源供應電路之直流高壓電源輸人可取自主動功因校正電路之升壓 直流電源端’或經升職之直流電源端，其採用脈波頻率調變電路(pfm) I243525 之直>>ML供應電源電路， /、輸出直流電源則供給延時電路及脈波頻率調變 電路及高頻功率輪出電路。 2·馬頻功率輸出電路 、 刼用王橋式或半橋式振盪電路，具有單一之高頻電 、、’、足夠之回頻輪出功率，單一之輸出電壓值。 3. =自振斜橋式驅動積體電路駐電路，並隔離變壓器，可調式精 在亚聯祕積體電路，而得—穩定及高效率之直流電源供電於負載。 4. 以脈波頻率調蠻雷玖r , (PFM)精密穩壓電路可提升冷陰極管（CCFL)管 群之光源即質及供電於冷陰極管（ccfl)管群之電壓穩定度。 5·保“路中之過高電壓及過低電壓比較器電路，其功能可達成冷陰極管 群之開路、斷路’致使高頻電源之過高電縣過低賴之設定比較，以 達成保濩及提高光源品質之目的。 6·延4電路之特徵騎單—高頻電源讀穩定後，冷陰極管群全亮穩定情 况下’經所需時間後，過高電壓及過低電壓比較器電路才開始動作，以 判定高頻電源電路應為供電或斷電狀態，其延時電路之延時動作時間， 視其冷陰極管群之數量、特性與品質而定。 圖一為本發明高頻電源裝置及保護裝置之方塊圖。 圖二為本發明之主動功因校正電路。 圖三為本發明之直流電源供應電路及直流電源負載系統。 圖四為本發明之脈波頻率調變電路及高頻功率輸出電路。 圖五為本發明之冷陰極管群保護電路。 圖六為本發明之高頻變壓器之實施例一。 1243525 圖七為本發明之高頻變壓器之實施例二。 【實施方式】 如圖-所不，為本發明高頻電源裝置及保護裝置之方塊圖，其係由主 動功因校正電路⑽、直流電源供應電路細、直流電源負載系統删、脈 波頻率繼電路及高頻功率輸出電路·、冷陰極管群保護電路泖及啟動 電路600所構成。 如圖二所示，為本發明之主動功因校正電路，其包含有輸入電源端、 防電擊、防電磁干擾等電路裝置，而其直流電源負載系統3〇〇可供電於μ LCD TV之Timer系統，或其它大型LCD面板之供電系統。其輸入端為交 流電源輸入，輸入電壓自90V至細，電源頻率5〇Hz至6〇Hz皆可共用， 其交流電源經保險絲（Fuse) ’防電擊元件z_，電磁干擾濾波電路係由電 感線圈組L100與L101及電容器組χ電容cl〇5，γ電容α〇〇、α〇ι所構 成，為防止輸人電麟_紅發生，綠有貞溫度絲電阻元件ntc加 以保護，交流電源經保護電路後送到全波整流器BR1⑻之交流端，而全波 整流器BR100之直流側正電端與負電端分別供電於主動功因校正電路 腦’再由主動功因校正積體電路U100執行功率因數之校正，與電壓提升 之功能而在B+端得到約直流4,左右，其直流電源B+分職電於直流電 源供應電路200與脈波頻率調變電路及高頻功率輸出電路4〇〇。 如圖三所示，為本發明之直流電源供應電路施及直流電源負載系統 300，其直流電源供應電路綱，係由自麵半橋式驅動積體電路（紐 O—gHdfBridge Driver) U200所構成，其特徵在具有廣範圍之補償電 1243525 壓，約直流爾至600V，電源效率80%以上；在電壓輸出部份採用可調 式精密並聯穩壓積體電路U2G1，可保證得2.5V〜36V可調式精密並聯穩壓 器之功效，其並設有直流電源供應過電流賴魏，係由峨積體電路⑽] 所構成，當直流輸出之負載過載時，由光電耦合器ph2〇2負責逼使主動功 因校正積體電路UHK)停止動作而無直流B+電源輸出，光輪合器拖皿 係為一種光電耦合器（Photo Coupler)之結構，直流電源供應電路2〇〇之直 流輸出分成二部份，帛1部份為供主負載直流電源負載系統3〇〇之用，與 第2部份為Vo端電源為供電於脈波頻率調變電路及高頻功率輸出電路4〇〇 之功率金屬氧化物場效電晶體（powerMOSFET) M201及M202之閘極電 源所需’其二種電源之輸出皆為獨立之供電方式為其特徵。 當濾波電容器C209之兩端電壓較輸出設定電壓為低時，其分壓電阻 R217、R218之R218與地間之電壓小於並聯穩壓積體電路U20!之Vref端 之電壓，此時並聯穩壓積體電路U201之K、A端不導通，光電耦合器Ph201 之LED不亮，NPN型電晶體T201之集射極呈OFF狀態，光電耦合器Ph205 之LED不亮，其輸出側呈OFF狀態，此時PNP型電晶體T202之集射極導 通，光電耦合器Ph204之LED亮，其輸出側導通，電容器C201與地呈on 狀態，此時振盪電容器C202與C201因並聯之故，其總電容量增加，而使 自振盪半橋式驅動積體電路U200之自振盪頻率下降，其由諧振電容器C204 與V卜V2端之串聯電感LP201形成之高頻變壓器TR2之輸出增大，此時 V3、V5、V4線圈端構成之次級圈側LSI之電壓上升，其經蕭特基（Schottky) 二極體D205、D206全波整流後，其濾波電容器C209兩端之電壓即上升， 1243525 而補償原先之電壓下降設定。 若渡波電容11 C2G9之兩端電壓較設定電壓為高時，其分壓電阻犯18 與接地之間之電壓大於並聯穩壓積體電路麵之而電壓，此時光電輕 合器Ph201之LED亮， 並聯穩壓積體電路U201 即並聯穩壓積體電路U201之K、A端導通，此時 導通，光電耦合器Ph205之LED亮，其輸出侧串 聯有修正電阻娜，其與振魏阻娜並聯，此時自振盪半橋式驅動積 體電路U2GG之自紐醉上升，其由舰電容㈣c2Q4财魏感[贿 形成之南頻變壓器TR2之輪出減少，其經蕭特基（Sch〇ttky)二極體娜、 D206全波整流後，在滅波雷r 夂你“政私谷态C209兩端之電壓下降，而達原先設定之 電壓。 由以上二種動作原理可知，其直流電源負載系統遍可以得非常穩定 之電壓輸心同理，雜電容器⑶4與—串聯電感L膽亦可設計在正常 諧振曲線之左側，在高頻狀態下為大輸出；在低雛態下為小輸出，而不 自限，此時NPN型電晶體伽、光電搞合器ph2〇5與pNp型電晶體·、 光電搞合S Ph2G4 g&合作-調整，即可完献轉之動作，亦在本發明之 範疇内。 當濾波電抑C2G9兩叙制設紐時，餘稽納二極體（z_ 關脚，限流電阻㈣而到刪型電晶體τ2〇4之基極，此時腦 型電晶體Τ204之絲極導通，職器㈤糾導通，即可將直流設定電 壓供電於錢麵貞載純綱；為了舰波頻糊魏路及高頻功率輸出 電路4〇〇之輸出在冷陰極管保護電路啟動點亮冷陰極管（ccfl)有足 12435251243525 Description of the invention: [Technical field to which the invention belongs] The present invention is a high-frequency power supply device that can supply a stable DC power supply to a load, and can also be applied to pulse frequency modulation (PFM) composed of precision voltage control circuits. The circuit can make the cold cathode g group get stable high-frequency power supply to get the best luminous efficiency and improve its light source quality. It also has over-voltage and low-voltage protection circuits to protect the safety of the cold cathode tube group. It is further applied to TFT LCD TV or other large LCD panels to make the best display results of the LCD tube group. [Previous technology] It is known that cold cathode tubes are used on the backlight of LCD monitors, and a set of inverters (onverter)-generally lit-two or two cold cathode tubes, which are used in large LCD monitors or large LCD TVs. On the screen, it is necessary to use five or more sets of converters, which will have the following disadvantages: 1. The high-frequency operating frequency of each group of converters is somewhat different, so there will be a variety of interference on the LCD monitor Frequency, increasing the cost burden of electromagnetic interference removal technology. 2. The output voltage of the high-view pressure of several sets of relays will be somewhat different, which will affect the brightness of the cold cathode tube and the quality of the LCD monitor. 3. The cost of using multiple sets of converters is higher than the cost of a single converter. 4. A DC converter needs to be installed again, which increases the cost. So ‘How to monitor the above cold cathode tube on LCD! The shortcomings of the county source, a novel solution was proposed to design [a kind of cold cathode tube group protection circuit, and the precision stable dragon technology of pulse frequency modulation (PFM), transferred to L (: D monitoring Device quality, and can solve the lack of familiar multiple sets of converters, such as fresh interference, complex structure and high cost. For a long time, 1243525 has been the user ’s earnest hope and the inventor ’s difficulty. The inventor is based on many years Engaged in the detailed research and development of the electronics industry, the practical experience is thought and improvement of intentions. After various designs, discussions, trial samples, and improvements, a cold-cathode lamp protection circuit was finally developed to solve the above problems. [Summary of the Invention] In order to effectively provide backlight sources in large or very large LCD monitors or TFT LCD τν, etc .: The first object of the present invention is to provide a precision stable voltage device of pulse frequency modulation (PFM), To improve the conventional lack of stable voltage supply to the cold cathode tube (CCFL) tube group. The second object of the present invention is to provide a stable and high efficiency DC power supply to the load. The third aspect of the present invention The purpose is to provide a cold cathode tube group protection device to solve the lack of conventional multi-group converters. The fourth object of the present invention is to apply a single-high frequency power supply to solve the lack of frequency interference and high cost of conventional multi-group converters. The fifth object of the present invention is to provide the demand for backlight sources such as large or very large LCD monitors, LCD TV screens, LCD advertising facilities, etc. The sixth object of the present invention is to provide better hardware circuits to prove that this case can be achieved. The purpose and effect can be implemented according to the present invention. In order to solve the lack of conventional power supply and high-efficiency small LCD monitor, the present invention has the following characteristics: 1. DC power supply circuit The DC high-voltage power input can be taken from the boost DC power terminal of the active power factor correction circuit or the promoted DC power terminal, which uses the pulse frequency modulation circuit (pfm) I243525 straight > > ML supply Power circuit, /, output DC power is supplied to the delay circuit, pulse wave frequency modulation circuit and high-frequency power wheel out circuit. 2 · Horse frequency power output circuit, using the king bridge or half bridge oscillation circuit, with A single high-frequency power supply, a sufficient output power of the frequency-return wheel, and a single output voltage value. 3. = Self-oscillating inclined bridge drive integrated circuit resident circuit, and isolation transformer, adjustable precision in Asia Union secret product The body circuit, which is a stable and high-efficiency DC power supply to the load. 4. Adjust the pulse frequency 频率 r, (PFM) precision voltage regulator circuit can improve the quality of the light source of the cold cathode tube (CCFL) tube group. And the voltage stability of the cold cathode tube (ccfl) tube group. 5 · Guarantee "over-voltage and over-low voltage comparator circuit in the road, its function can achieve the cold-cathode tube group open circuit, open circuit 'cause high frequency The power source is too high and the power county is too low to compare the settings, in order to achieve the purpose of maintaining power and improving the quality of the light source. 6 · Extend the characteristics of the 4 circuit riding single-After the high-frequency power supply is stable, the cold cathode tube group is fully bright and stable. 'After the required time, the over-voltage and under-voltage comparator circuits start to operate to determine whether the high-frequency power supply circuit should be in the power supply or power-off state. The delay action time of its delay circuit depends on the cold cathode tube group. Depends on quantity, characteristics and quality. FIG. 1 is a block diagram of a high-frequency power supply device and a protection device according to the present invention. FIG. 2 is an active power factor correction circuit of the present invention. FIG. 3 is a DC power supply circuit and a DC power load system according to the present invention. FIG. 4 is a pulse wave frequency modulation circuit and a high-frequency power output circuit of the present invention. FIG. 5 is a cold cathode tube group protection circuit of the present invention. FIG. 6 is a first embodiment of the high-frequency transformer of the present invention. 1243525 FIG. 7 is a second embodiment of the high-frequency transformer of the present invention. [Embodiment] As shown in the figure, it is a block diagram of the high-frequency power supply device and protection device of the present invention, which is composed of an active power factor correction circuit, a DC power supply circuit, a DC power load system, and a pulse frequency relay. The circuit and the high-frequency power output circuit are composed of a cold-cathode tube group protection circuit and a starting circuit 600. As shown in Fig. 2, the active power factor correction circuit of the present invention includes circuit devices such as an input power terminal, anti-shock, and anti-electromagnetic interference, and its DC power load system 300 can supply the timer of the μ LCD TV. System, or other large LCD panel power supply system. Its input terminal is AC power input, the input voltage is from 90V to fine, and the power frequency can be shared from 50Hz to 60Hz. Its AC power is passed through a fuse (Fuse) 'anti-shock element z_, and the electromagnetic interference filter circuit is composed of an inductor coil. Group L100 and L101 and capacitor group χ capacitors cl05, γ capacitors α〇〇, α〇ι, in order to prevent the occurrence of electricity lin_red, the green temperature temperature resistance element ntc to protect, AC power is protected The circuit is then sent to the AC end of the full-wave rectifier BR1 ，, and the positive and negative sides of the DC side of the full-wave rectifier BR100 are powered by the active power factor correction circuit brain, and then the active power factor correction integrated circuit U100 performs the power factor. The functions of correction, voltage boost and get about DC 4, about B + terminal, its DC power B + is divided into DC power supply circuit 200, pulse frequency modulation circuit and high frequency power output circuit 400. As shown in FIG. 3, the DC power supply circuit of the present invention is applied to a DC power load system 300. The DC power supply circuit outline is composed of a self-surface half-bridge driver integrated circuit (New O-gHdfBridge Driver) U200. It is characterized by a wide range of compensation voltage 1243525, about DC to 600V, power efficiency of 80% or more; the voltage output part uses adjustable precision parallel voltage regulator integrated circuit U2G1, which can be guaranteed 2.5V ~ 36V can be The function of the adjustable precision parallel regulator is also provided with a DC power supply overcurrent Lai Wei, which is composed of Emerald ’s circuit ⑽]. When the DC output load is overloaded, the photocoupler ph2〇2 is responsible for forcing The active power has no DC B + power output due to the stoppage of the correction integrated circuit (UHK). The light wheel combiner is a photo coupler structure. The DC output of the DC power supply circuit 2000 is divided into two parts. The first part is for the main load DC power load system 300, and the second part is the Vo end power for powering the pulse wave frequency modulation circuit and high frequency power output circuit 400. Electrically M201 and M202 of the source of the desired metal oxide gate field effect transistor (powerMOSFET) 'are all the other kinds of output power of the power supply independent of its characteristics. When the voltage across the filter capacitor C209 is lower than the output set voltage, the voltage between the voltage-dividing resistors R217, R218, R218, and ground is less than the voltage at the Vref terminal of the parallel voltage regulator integrated circuit U20! The K and A terminals of the integrated circuit U201 are not conductive, the LED of the photocoupler Ph201 is off, the collector of the NPN transistor T201 is OFF, the LED of the photocoupler Ph205 is off, and its output side is OFF. At this time, the collector and emitter of the PNP transistor T202 are turned on, the LED of the photocoupler Ph204 is turned on, its output side is turned on, and the capacitor C201 and the ground are on. At this time, the oscillation capacitors C202 and C201 are connected in parallel, and their total capacitance is It increases, which reduces the self-oscillation frequency of the self-oscillating half-bridge driving integrated circuit U200. The output of the high-frequency transformer TR2 formed by the resonant capacitor C204 and the series inductor LP201 at the V and V2 terminals increases. At this time, V3 and V5 The voltage of the secondary-side LSI formed by the V4 coil terminal rises. After full-wave rectification of Schottky diodes D205 and D206, the voltage across the filter capacitor C209 rises, and 1243525 compensates the original Voltage drop setting. If the voltage across the capacitor 11 C2G9 is higher than the set voltage, the voltage between the voltage divider resistor 18 and the ground is greater than the voltage on the circuit surface of the parallel voltage stabilizing integrated circuit. At this time, the LED of the light-coupler Ph201 lights up. The parallel voltage stabilizing integrated circuit U201 means that the K and A terminals of the parallel voltage stabilizing integrated circuit U201 are turned on. At this time, they are turned on, and the LED of the photocoupler Ph205 is turned on. The output side of the stabilizing integrated circuit is connected with a correction resistor Na, which is connected with Zhen Weizhen In parallel, at this time, the self-oscillating half-bridge driving integrated circuit U2GG rises from the nuisance, which is reduced by the ship ’s capacitance ㈣c2Q4 [the output of the south frequency transformer TR2 formed by bribery is reduced, which ) After the full-wave rectification of the dipole Na and D206, the voltage at the two ends of the political and private valley state C209 drops in the wave-reduction r and reaches the original set voltage. From the above two operating principles, it can be known that its DC power supply load The system can get a very stable voltage input in the same way. The hybrid capacitor ⑶4 and the series inductor L can also be designed on the left side of the normal resonance curve, which has a large output at high frequencies and a small output at low chick states. Not self-limiting, at this time NPN type transistor , Photoelectric coupler ph205 and pNp type transistor ·, Photoelectric coupler S Ph2G4 g & cooperation-adjustment, you can complete the movement, which is also within the scope of the present invention. When the filter is suppressed C2G9 two systems When setting the button, Yu Zana diode (z_ off pin, current-limiting resistance to the base of the deleted transistor τ204, at this time the filament of the brain-type transistor T204 is turned on, and the device is turned on and turned off. The DC set voltage can be supplied to the pure face of Qian Zhan; for the output of the ship and the high frequency power output circuit 400, the cold cathode tube protection circuit is activated to light up the cold cathode tube (ccfl). 1243525

夠之點冗電力，而增加了冷陰極管（CCFL)啟動電路，其係由時間常數電 阻㈣，光電轉合器刪，時間常數電容〇1〇及即時放電電路所組成， 即時放電魏細㈣型f晶體T2G5及分壓電_22、趣所組成，當 繼電器（Relayl)動作時，設定電壓向數電容c2⑴充電，此時卩_ 之LED免，其輸出織射極連接到脈波辭調變電路及高頻功率輸出電路 之自振盪半橋式驅動積體電路〇之第3腳電容器⑽3之一端與接 地端’此時自振辭橋式鶴積體電路⑴⑻之振盪鮮降低，其高頻變壓 益TR1之高頻高壓輸出端3、4之電壓上升至冷陰極管（cc孔）之啟動點 亮電壓，而後因時間常數電容器C21〇已完成充電，而光電輕合器ρ·之 LED不冗，而完成其冷陰極管（CCFL)點亮動作。 當系統關機時，其滤波電容器㈣9之電壓下降至零，此時即時放電電 路之PNP型電晶體T2G5動作，而將時間常數電容器c綱之電荷放電，使 其冷陰極管（CCFL)點亮動作成為歸零狀態。Sufficient power is enough, and a cold cathode tube (CCFL) startup circuit is added, which is composed of a time constant resistor ㈣, a photoelectric converter, a time constant capacitor 〇10, and an instant discharge circuit. Type f crystal T2G5 and divided piezoelectric _22, fun, when the relay (Relayl) is activated, the set voltage charges the digital capacitor c2⑴, at this time the __ LED is free, and its output weave is connected to the pulse tone Of the self-oscillating half-bridge driving integrated circuit of the transformer circuit and the high-frequency power output circuit. One terminal of the third pin capacitor ⑽3 and the ground terminal 'at this time, the oscillation of the self-oscillating bridge-type crane integrated circuit 鲜 is reduced, and The voltage of the high-frequency and high-voltage output terminals 3 and 4 of the high-frequency transformer gain TR1 rises to the start-up lighting voltage of the cold cathode tube (cc hole), and then the time constant capacitor C21〇 has been charged, and the photoelectric light-coupler ρ · The LED is not redundant, and completes its cold cathode tube (CCFL) lighting operation. When the system is shut down, the voltage of its filter capacitor ㈣9 drops to zero. At this time, the PNP transistor T2G5 of the instant discharge circuit operates, and the charge of the time constant capacitor c is discharged to cause the cold cathode tube (CCFL) to light up. It becomes a zero state.

§濾波電容C209有設定電壓時，繼電器（Rday 〇動作，其正負電端 之直流電源供電於直流電源貞載祕3⑻，若貞載超載或負載短路時，其負 電端之電流經量測電阻R219，而產生一電壓降，此電壓降若大於二分壓電 阻R227 R228之電阻R228與接地間之電麗，此時比較積體電路U2〇2之 輸入正電端電壓大於輸入負電端電壓，此時比較積體電路U2〇2輸出一電壓 於輸出端經限流電阻R226至光電耦合器Ph2〇2之LED端，此時光電耦合 器Ph202之集射極端導通，並且接於主動功因校正電路1〇〇之i、2端，此 時石夕控整流器SCR1因閘極受有電壓，其a、κ端導通，而使型電晶 11 1243525 趾T101之木射極導通，而使功率因數校正電路之主動功因校正積體電路 Z之第_豆路，而功率因數校正電路之升壓功能消失，其B+端之丽 I壓下IV ’此#冷陰極官保護電路500之光電搞合器P刚動作，同時直 •弘源供應電路200之自振盪半橋式驅動積體電路測0之 被p㈣晶體短路，而瓣止，此時無直流電源供電：；直流電 源負載糸統300及職頻率調變電路及高頻功率輸出電路魏在高頻變壓 器TR2之次級圈端V6、V7、脱設有半波整流二極體職及渡波電容 一、”直机輸出立而Vo共電於自紐半橋式驅動集體電路仍⑻；自振盪 半橋式驅動集體電路U2〇〇之第2腳設有可變電阻概^係為微調自振盈 ^員率而π❿並輪壓積體電路U2Q1之Vref腳，設有可變電阻咖⑴係 為微5周,χ疋直流輸出電壓而設，其在直流電源供應電路施之輸出端設有 直流電源輸出指示電路，其由限流電阻娜及發光二極體.二極體腳 所構成#目的在指示直流供電端有直流電存在；因為電阻㈣工之功耗太 大而裝α又有省電裝置，其動作原理為：當ν〇之電壓超過稽納二極體 213之崩潰電壓時，其刪型電晶體丁篇動作，此時，β+電源所供應之 電源’自電阻R2(H、單向二極體D212、繼電器Rday2之8接點，至電容 器C200之正電端，因繼電器Rday2之線圈受有電壓，而使b接點開路， 此時V〇端之電源經電阻肪7、單向二極體D211至電容ϋ(：200之正電端， 而由V〇立而之電源負責供電於自振還半橋式驅動積體電路U200之電源及周 邊電路之所需。 如圖四所不，為本發明之脈波頻率調變電路及高頻功率輸出電路4〇〇， 12 1243525 其脈波頻率調變電路以脈波頻率調變積體電路（pm ic)拉電路，如 IR2I53 IR2155、Me·6或UC1864等’本電路之特徵在於應用第2及 第3光電耗合器Ph302、Ph303，做為控制脈波頻率調變積體電路（即自振 靈半橋式轉脈波辭之元件，崎最狀控舰果；自 «半橋式鶴積體電路麵之二輸出端分別供制功率金屬氧化物場 效電晶體（PowerM0SFET)聰、M3〇2之閘極端，其特徵為得兩功率金 屬氧化物場效電晶體（Power M0SFET)刪、M3〇2之輸入端無雜訊干擾 半橋式振魏路及取鶴赋職壓_合方式，其半滅紐電路之輸 出端卜2端分別接在高頻變壓$加之初級線圈Lp3〇l端，而其次級圈 端設有供冷陰極管（CCFL)專帛之-鱗圈3、4端，供輕檢測及保護 電路專用之-組線圈5、6端，及與次級圈3、4端具有壓功能之次級圈7、 8 ，自—人級圈7、8端可取得次級圈3、4端之比例電壓值。 在咼頻變壓器TR1之次級圈7、8端設定為次級圈3、4端之1/100圈或 其他值’即當次級圈3、4端之電壓為ιιοον時，次級圈7、8端之電壓為 HV，其7、8端之電壓經過全波整流器BR302後，經濾波電容C3〇5，再 接到分壓電阻R312、R314及可變電阻VR301，當次級圈3、4端之電壓下 降時，其R314端之電壓下降，此時可調式精密並聯穩壓積體電路U3〇1之 K、A端不導通，光電耦合器Ph304之LED不亮，其輸出側集射極不導通， PNP型電晶體T302導通’光電搞合器Ph303之LED導通，此時C301與 C302並聯，其總電容量上升，此時自振盪半橋式驅動積體電路U3〇〇之自 振盪頻率下降，而其高頻變壓器TR1之輸出上升，而補償原先設定冷陰極 13 !243525 ，若次級圈3、4端之電壓上升，此時R3m§ When the filter capacitor C209 has a set voltage, the relay (Rday 〇 acts. The DC power of its positive and negative terminals is supplied to the DC power supply. If the load is overloaded or the load is short-circuited, the current at the negative terminal is measured by the resistance R219. And a voltage drop is generated. If this voltage drop is greater than the voltage between the two resistors R227 R228 and the resistor R228 between the ground and the ground, then the input positive voltage of the integrated circuit U2 0 is greater than the input negative voltage. The integrated circuit U2 0 outputs a voltage at the output end via the current limiting resistor R226 to the LED end of the photocoupler Ph2 02. At this time, the collector and emitter ends of the photocoupler Ph202 are turned on and connected to the active power factor correction circuit. At the terminals i and 2 of 100, at this time, the Shi Xi controlled rectifier SCR1 is under voltage due to the gate, and its a and κ ends are turned on, so that the transistor 11 1243525 of the toe T101 is turned on, and the power factor is corrected. The active power factor of the circuit corrects the _ dou of the integrated circuit Z, and the boost function of the power factor correction circuit disappears. The B + end of the I I is depressed by IV 'this # cold cathode official protection circuit 500's photoelectric coupler P just moved while being straight • Hongyuan The self-oscillating half-bridge drive integrated circuit of the supply circuit 200 detects that the p㈣ crystal is short-circuited, and the flap is stopped. At this time, there is no DC power supply: DC load load system 300 and the frequency modulation circuit and high-frequency power. The output circuit is on the secondary side terminals V6 and V7 of the high-frequency transformer TR2. It is equipped with a half-wave rectifier diode and a cross-wave capacitor. 1. The straight-line output and Vo are connected to the self-new half-bridge drive collective circuit. Still ⑻; the second leg of the self-oscillating half-bridge driving collective circuit U2OO is provided with a variable resistor ^ is used to fine-tune the self-vibration surplus rate and the Vref pin of the π❿ round convolution body U2Q1 is provided with The variable resistance coffee is designed for 5 weeks and χ 疋 DC output voltage. It has a DC power output indication circuit at the output end of the DC power supply circuit. It consists of a current-limiting resistor and a light-emitting diode. The purpose of the body # is to indicate the presence of DC power at the DC power supply terminal; because the power consumption of the resistor is too large, and α is installed with a power saving device, its operating principle is: when the voltage of ν〇 exceeds the 213 diode When the breakdown voltage is reached, the deleted transistor is moved. At this time, β + The power supplied by the power source 'is from the resistor R2 (H, unidirectional diode D212, the 8 contact of the relay Rday2, to the positive terminal of the capacitor C200, because the coil of the relay Rday2 receives a voltage, and the b contact is open. At this time, the power at the V0 terminal passes the resistor 7 and the unidirectional diode D211 to the capacitor ϋ (: 200 positive terminal, and the V0 stand-alone power supply is responsible for supplying power to the self-oscillating and half-bridge driving product. The power supply of the circuit U200 and the peripheral circuits are required. As shown in Figure 4, the pulse wave frequency modulation circuit and high frequency power output circuit of the present invention are 400, 12 1243525. The pulse frequency modulation circuit is pulsed. Wave frequency modulation integrated circuit (pm ic) pull circuit, such as IR2I53 IR2155, Me · 6, or UC1864, etc. 'This circuit is characterized by the use of the second and third optoelectronic consumer Ph302, Ph303 as the pulse frequency control Modulation integrated circuit (ie, the element of self-vibrating half-bridge type pulse wave signal, which is the most important one to control the ship's fruit; from the two output terminals of the «half-bridge type crane integrated circuit surface, respectively, for power metal oxide field effect The gate extremes of Satoshi and M302 transistors are characterized by the two power metal oxide field effect (Power M0SFET), no noise on the input terminal of M3〇2, half-bridge Zhenwei Road, and take the crane to put together the voltage and closing mode, the output terminal of the half-extinguished button circuit is connected to the high-frequency transformer Pressure plus the primary coil Lp301 end, and its secondary coil end is provided with cold cathode tube (CCFL) special-scale loop 3, 4 terminal, for light detection and protection circuit dedicated-group coil 5, 6 terminal , And the secondary coils 7, 8 which have a pressure function with the secondary coils 3 and 4, the proportional voltage values of the secondary coils 3 and 4 can be obtained from the human loops 7, 8. Set the secondary coils 7 and 8 of the high-frequency transformer TR1 to 1 / 100th of the secondary coils 3 and 4 or other values. That is, when the voltage of the secondary coils 3 and 4 is ιοον, the secondary coil 7 The voltages at terminals 8 and 8 are HV. After passing through the full-wave rectifier BR302, the voltages at terminals 7 and 8 pass through the filter capacitor C305 and then receive the voltage-dividing resistors R312 and R314 and the variable resistor VR301. When the voltage at the 4 terminal decreases, the voltage at the R314 terminal decreases. At this time, the K and A terminals of the adjustable precision parallel voltage regulator integrated circuit U3101 are not conductive, the LED of the photocoupler Ph304 is off, and the output side of the LED is focused. Extremely non-conducting, PNP transistor T302 turns on, and the LED of the photocoupler Ph303 is turned on. At this time, C301 and C302 are connected in parallel, and the total capacitance increases. At this time, the self-oscillating half-bridge driving integrated circuit U300 is self-oscillating. The frequency decreases, while the output of its high-frequency transformer TR1 rises, and the compensation originally set the cold cathode 13! 243525. If the voltage at the secondary terminals 3 and 4 rises, at this time R3m

R306其二端與振盪電阻R3〇7並 官（CCFL)之電壓不足；同理， 之Μ*壓上升’其祐磁穩厭接艘垂 光電耦合器Ph202之LED導通，其集射極之串聯電阻 [阻R307並聯，其並聯後之總電阻值下降，於是自振 盪半橋式驅動積體電路U·之自振顏率上升，而其高頻變壓器加之 輸出下降，而補償原先設定冷陰極f (CCFL)之電壓過高，因此採用可調 式精密並聯穩壓積體電路U301，因此可保註冷陰極管（CCFL)可得一穩 定之管電壓為本發明特徵之_ ;同理，舰電容器⑽5與㈣電感Lp遍 _ 亦可設計在正常諳振曲線之左側，在高頻狀態下為大輸出；在低頻狀態下 為小輸出，而不自限，此時PNP型電晶體T3〇2、光電耦合器ρω〇3與仰^^ 生電aa體T301、光電叙合器puo]亦需配合作一調整，即可完成反邏輯之 動作，此亦在本發明之範疇内。 啟動電路600之輸入電壓取自圖三之直流電源負載系統3〇〇之τν Tuner之輸出端，其當了^丁如沈受有直流電壓時，其將輸出約5ν直流(DC) 於系統内，此時因有5V之直流輸入，此時5V直流電壓供電於限流電阻幻17 φ 及光電耦合器Ph300之LED，此時光電耦合器Ph300之集射極導通，其電 晶體T300導通’圖三之v〇電壓供電於脈波頻率調變電路及高頻功率輸出 電路400，而完成啟動動作。 如圖五所示’為本發明冷陰極管群保護電路500，自圖中可知，其高頻 ， 、變壓器TR1之次級圈5、6端之輸出電壓經橋式整流器BR400整流後，再 — 經渡波電容C401 ’再經限流電阻R4〇1及分壓電阻R4〇2、R4〇3及三端式 14 1243525 電壓調整積體電路刪，其5、6端之電壓亦與圖四之高頻變壓器tri之 3、4端同為高頻變壓器TR1之次級側，其二者之電壓比例可設為2/剛或 其它值，當高頻變壓H TR1之3、4端電壓上升時，其分壓電阻謂3之電 壓上升，其經單向二極體D4〇1至比較積體電路U4〇2丨/2、之正與 負電輸入端，而比較積體電路臓1/2，刪1/2之正負電輸入端之輸入 電壓得自電_整積體電路麵之輸―，為_穩定之直流電壓，如 7810 7812 7815等二端式電壓調整積體電路，而構成—窗口型比較器電 路田3 4埏之私壓上升，R4〇3兩端之電壓亦上升，上升至超過比較積 體電路U402 1/2之負電輸入端電壓時，其輸出端輸出一電壓經單向二極體 D402 R412至光電輕合器ph彻之LED，此時光電輕合器拖綱之集射 極‘通’於疋圖二之保護電路動作，使本發明之系統停止動作；若3、4端 之電C過低其U403之正電輸入端電壓大於負電輸入端之電壓，此時^彻 輸出-電壓經單向二鋪D侧，R412至光電㉖合器ρ_之led，此時 光電搞b PM01之集射極導通，於是圖三之保護電路動作，使本發明之 系、物止動作，此即為說明本發鶴護電路，具有保護冷陰極管（ccfl) 過间及過低電壓之保護作用，同時再另設有冷陰極管（ccfl)之保護電路 501之回覆^號電壓’其供電於光電耗合器阳⑴之〇、卩二端，其意為冷 陰極官（CCFL)電路正常動作時，〇、p端無電屢輸出 ，若冷陰極管（CCFL) 电路不正㈣’即有一電壓供電於〇、p端，使光電搞合器辦⑴集射極導 通其正電>1經限流電阻R408，光電輕合器ph5〇1之集射極及單向二極體 D405 ’而至比較積體電路U4〇2 1/2之正電輸入端，而使比較積體電路^搬 15 1243525 有一正電壓輸出’使光_合器P_之led亮，而使本發明之系統 嫩止，其在光電綱蝴之咖之_端接有—雜整流器隨 之陽極’其目的為了避免當本系統開機時，其各部份之電壓不敎，而爭 使過電駐《壓之髓電_作，_其錢延時電路，等其冷陰極管 (c叫點嫩後，再做保護動作，其延時電路是由時間常數電阻麵， 時間常數電容CM03，稽納二極护τλ·」、 體（ZenerDlode) D4〇4，pNp 型電晶體 丁4〇1 及二分壓電阻細、麵所組成，其所延糊之長短，需根據需求而定， 而不予自限。The voltage at the two ends of R306 and the oscillating resistor R307 (CCFL) is insufficient; for the same reason, the voltage of M * rises. Its magnetic stability is connected to the LED of the vertical photocoupler Ph202, and its collector and emitter are connected in series. The resistance [resistance R307 is connected in parallel, the total resistance value after the parallel connection decreases, so the self-oscillation rate of the self-oscillating half-bridge drive integrated circuit U · increases, and the output of its high-frequency transformer plus decreases, and the original cold cathode f is compensated. (CCFL) voltage is too high, so the adjustable precision parallel voltage regulator integrated circuit U301 is used, so the cold cathode tube (CCFL) can be injected. A stable tube voltage is a feature of the present invention. Similarly, the ship capacitor ⑽5 and ㈣ inductor Lp times _ can also be designed on the left side of the normal vibration curve, which is a large output at high frequencies; a small output at low frequencies, but not self-limiting. At this time, the PNP transistor T302, The photocoupler ρω〇3 and Yang ^^ electricity generation aa body T301, photoelectric coupling puo] also need to be coordinated and adjusted to complete the anti-logic action, which is also within the scope of the present invention. The input voltage of the starting circuit 600 is taken from the output of the τν Tuner of the DC power load system 300 in Figure 3. When it receives a DC voltage, it will output about 5v direct current (DC) in the system. At this time, there is a 5V DC input. At this time, the 5V DC voltage is supplied to the current-limiting resistor Phantom 17 φ and the LED of the photocoupler Ph300. At this time, the collector and emitter of the photocoupler Ph300 are turned on, and the transistor T300 is turned on. The voltage of V3 is supplied to the pulse wave frequency modulation circuit and the high-frequency power output circuit 400 to complete the starting operation. As shown in Figure 5, 'This is a cold cathode tube group protection circuit 500 according to the present invention. As can be seen from the figure, the high-frequency output voltages of terminals 5 and 6 of transformer TR1 are rectified by bridge rectifier BR400, and then— The voltage across the capacitor C401 'is then passed through the current-limiting resistor R4〇1 and the voltage-dividing resistor R402, R4 03, and the three-terminal type 14 1243525. The voltage adjustment integrated circuit is deleted, and the voltages at its terminals 5 and 6 are as high as those in Figure 4. The 3 and 4 terminals of tri-frequency transformer tri are also the secondary side of high-frequency transformer TR1, and the voltage ratio between the two can be set to 2 / rigid or other values. When the high-frequency transformer H TR1 voltage rises The voltage rise of its voltage dividing resistor is 3, and it passes the unidirectional diode D4〇1 to the comparison integrated circuit U4〇2 丨 / 2, the positive and negative electric input terminals, and the comparison integrated circuit 臓 1/2, The input voltage of the positive and negative electrical input terminals of 1/2 is obtained from the input of the integrated circuit circuit. It is a stable DC voltage, such as two-terminal voltage adjustment integrated circuits such as 7810 7812 7815, and constitutes a window. The voltage of the comparator circuit Tian 3 4 埏 rises, and the voltage across R4 03 also rises, rising to more than the negative voltage of the comparison integrated circuit U402 1/2. When the input terminal voltage, the output terminal outputs a voltage via the unidirectional diode D402 R412 to the LED of the photocoupler ph. At this time, the emitter of the photocoupler is connected to the protection of Figure 2. The circuit operates to stop the system of the present invention. If the voltage at terminals 3 and 4 is too low, the voltage at the positive input terminal of U403 is greater than the voltage at the negative input terminal. At this time, the full output-voltage is transmitted to the D side of the unidirectional second store. , R412 to the led of the photoelectric coupler ρ_, at this time, the collector and the emitter of b PM01 are turned on by the photoelectric, so the protection circuit of FIG. 3 operates to make the system and the object of the invention act. This is to explain the protection of the crane. The circuit has the function of protecting the cold cathode tube (ccfl) from transients and excessively low voltage. At the same time, it is equipped with a cold cathode tube (ccfl) protection circuit 501. The voltage ^ is used to supply power to the optoelectronic device. The two terminals of 〇 and 意 mean that when the cold cathode official (CCFL) circuit is operating normally, there is no power output repeatedly on the 〇 and p terminals. If the circuit of the cold cathode tube (CCFL) is not normal, a voltage is supplied to the 〇, p terminals. Make the optoelectronic coupler do the collector and emitter to turn on its positive voltage > 1 via the current limiting resistor R408, optoelectronic The collector and emitter of the combiner ph501 and the unidirectional diode D405 'to the positive electrical input of the comparison integrated circuit U4〇2 1/2, so that the comparison integrated circuit has a positive voltage output of 15 1243525' The LED of the light _combiner P_ is brightened, so that the system of the present invention is softened. It is terminated at the __ of the photonics group-the hybrid rectifier follows the anode '. The purpose is to avoid that when the system is turned on, its The voltage of each part is not rampant, and the electric power is delayed. The delay circuit of the voltage is waited for its cold cathode tube (c is called tender, and then the protection action is performed. The delay circuit is made by Time constant resistance surface, time constant capacitor CM03, Zener diode protection τλ · ", body (ZenerDlode) D4 04, pNp type transistor D0 4 The length should be determined according to the needs, without being self-limiting.

如圖六所示，為本發明之高頻變壓器之實施例一，由圖四可知，當冷 陰極管（CCFL)管燈眾多，輸出瓦特數大增時，若使用單—高頻變壓器 ™，則_變壓器TO之體積及高度必大，為了薄型化，勢必採用多只 高頻籠II TRA、、、蘭，來蝴型化之目的，在圖六中，係將高頻 文S器TRA TRN及TR1二只單獨之高頻變壓器之原線圈串聯，即 之八端錢«容器⑽5，B端接高頻變壓器刪^端，而D端接高 頻變壓器™之1端’而2端接地’其特徵為三只高頻變壓器IRA、TRN、 TR1之原線圈成串聯連接，其等效原線圈之電感量值，隨需求而定，其串 如之同頻歷讀數亦隨需麵定，而不予自限；在高頻變壓器佩、 TRN TR1之次級圈端，E端接高頻穩定電容器cF，F端接高頻變壓器τ咖 之G端，Η端接高頻變壓器顶之3端而其4端接冷陰極管（⑽l) 之保4¾路5G卜其特徵為高頻魏器tra、trn、tri之次級圈成串聯 連接，而其總和輪㈣壓為高頻魏H TRA、TRN、TR1三者次線圈電麼 16 1243525 之總和，其總和輪出功率為高頻變壓器tra、侧、加三者之功率總和； 八问H TR1之次級圈5、6端與7、8端皆與圖四相同；其它之動作 原理亦與圖四相同，而不贅述。 囷斤示為本發明之咼頻變壓器之實施例二，由圖三可知，當負 載Η之負載過大日T ’為了薄型化之要求，勢必改用多只高頻變壓器丁从、 TRNI4TR1之原線圈V1，V2串聯，而其高頻變壓器丁^與丁顺與τ扣 之次級圈各自獨立，其各次級_用不同之半波整流或全波整流方式隨需 长而疋而不予自限’但其輸出側亦可接電壓調整器肪G，或電流調整器 而不自限其同頻趟器TRA、TRN&TR2之輸$電壓及功率，皆依其單 獨個體而疋’而其總輸出功率為其高頻變壓器tra、trn及似之輸出功 率總和。 综上所述，當知本發明係一種高頻電源裝置，可供應穩定之直流電源 於負載’亦可制於精密電壓控制電路所組成之脈波頻率調變（pfm)電 路’可使冷陰極管群制敎之供t高頻龍，崎最佳之發光效率及提 高其光源品f，並設有過電壓及低電壓倾電路，雜護冷陰極管群之安 全，而進-步應用於TFT LCD TV或其他大型LCD面板上，以發揮⑽ 管群最佳之顯示效果。故本發明實為—富有新穎性、進步性，及可供產業 利用者’應符合專利申請要件無疑，爰依法提請發明專利申請，懇請貴 審查委員早曰賜予本發明專利，實感德便。 17 1243525 【圖式簡早說明】 圖一為本發明高頻電源裝置及保護裝置之方塊圖。 圖二為本發明之主動功因校正電路。 圖三為本發明之直流電源供應電路及直流電源負載系統。 圖四為本發明之脈波頻率調變電路及高頻功率輸出電路。 圖五為本發明之冷陰極管群保護電路。 圖六為本發明之高頻變壓器之實施例一。As shown in Figure 6, this is the first embodiment of the high frequency transformer of the present invention. As shown in Figure 4, when there are many cold cathode tube (CCFL) tube lights and the output wattage increases greatly, if a single-high frequency transformer ™ is used, _The volume and height of the transformer TO must be large. In order to reduce the thickness, multiple high-frequency cages II TRA ,, and blue are bound to be used for the purpose of thinning. In Figure 6, the high-frequency filers TRA TRN and TR1 are used. The original coils of two separate high-frequency transformers are connected in series, that is, eight terminals «container⑽5, terminal B is connected to the high-frequency transformer, terminal ^, and terminal D is connected to one terminal of the high-frequency transformer ™ and its two terminals are grounded. The original coils of the three high-frequency transformers IRA, TRN, and TR1 are connected in series. The equivalent inductance value of the original coil is determined by the demand, and the string is the same as the frequency reading. Self-limiting; at the secondary winding of the high-frequency transformer, TRN TR1, E is connected to the high-frequency stabilization capacitor cF, F is connected to the G terminal of the high-frequency transformer τ coffee, and Η is connected to the 3 terminals of the high-frequency transformer top and other terminals. 4-terminal cold-cathode tube (⑽l), 4¾ circuit 5G, which is characterized in that the secondary loops of high-frequency Wei tra, trn, tri are connected in series Connection, and its total wheel pressure is the sum of the high-frequency Wei H TRA, TRN, TR1 three coil coils 16 1243525, and its total wheel output power is the sum of the power of the high-frequency transformer tra, side, plus three; eight The secondary terminals 5 and 6 and terminals 7 and 8 of H TR1 are the same as those in Figure 4; the other operation principles are the same as those in Figure 4 without further description. The load is shown as the second embodiment of the high-frequency transformer of the present invention. As can be seen from FIG. 3, when the load of the load 过 is too large, T ′, in order to reduce the thickness, it is bound to use multiple high-frequency transformers Ding, TRNI4TR1's original coil. V1 and V2 are connected in series, and the secondary loops of their high-frequency transformers Ding and Ding Shun and τ buckle are independent. Each secondary _ uses a different half-wave rectification or full-wave rectification method to grow as needed and is not allowed. 'But its output side can also be connected to a voltage regulator, G, or a current regulator without limiting the voltage and power of its co-frequency transmitters TRA, TRN & TR2, depending on its individual individual' and its The total output power is the sum of the output powers of the high-frequency transformers tra, trn and the like. In summary, when the present invention is known as a high-frequency power supply device, it can supply a stable DC power source to a load. It can also be made of a pulse frequency modulation (pfm) circuit composed of a precision voltage control circuit. The tube group system is used for high-frequency dragons. It has the best luminous efficiency and improves its light source quality. It is also equipped with over-voltage and low-voltage tilt circuits to protect the safety of cold-cathode tube groups. It is further applied to TFT LCDs. TV or other large LCD panel, in order to give the best display effect of ⑽ tube group. Therefore, the present invention is really rich in novelty, progressiveness, and available for industrial users' to meet the requirements of patent application. No doubt, the patent application for the invention was submitted in accordance with the law, and the examiner is kindly requested to grant the invention patent as soon as possible. 17 1243525 [Brief description of the drawings] Figure 1 is a block diagram of the high-frequency power supply device and protection device of the present invention. FIG. 2 is an active power factor correction circuit of the present invention. FIG. 3 is a DC power supply circuit and a DC power load system according to the present invention. FIG. 4 is a pulse wave frequency modulation circuit and a high-frequency power output circuit of the present invention. FIG. 5 is a cold cathode tube group protection circuit of the present invention. FIG. 6 is a first embodiment of the high-frequency transformer of the present invention.

圖七為本發明之高頻變壓器之實施例二。 [元件符號說明] 100 主動功因校正（APFC)電路。 200 直流電源供應電路。 300 直流電源負載系統。 400 脈波頻率調變電路及高頻功率輸出電路。 500 冷陰極管群保護電路。FIG. 7 is a second embodiment of the high-frequency transformer of the present invention. [Description of component symbols] 100 Active Power Factor Correction (APFC) circuit. 200 DC power supply circuit. 300 DC power load system. 400 pulse wave frequency modulation circuit and high frequency power output circuit. 500 cold cathode tube group protection circuit.

501 冷陰極管（CCFL)之保護電路。 502 過電壓與欠電壓之比較電路。 600 啟動電路。 C100、C101、…、C305 電容器。 BR100、BR302、…、BR400 全波整流器。 D101、D102、…、D404 二極體。 L100、L101 電感線圈。 18 1243525 LP201 > LP301 電感器。 Μ100、M201、...、M302功率金屬氧化物場效電晶體（Power MOSFET)。 NTC 負溫度係數電阻元件。501 CCFL protection circuit. 502 Overvoltage and undervoltage comparison circuit. 600 Start the circuit. C100, C101, ..., C305 capacitors. BR100, BR302, ..., BR400 full wave rectifiers. D101, D102, ..., D404 diodes. L100, L101 inductance coil. 18 1243525 LP201 > LP301 inductor. M100, M201, ..., M302 power metal oxide field effect transistor (Power MOSFET). NTC negative temperature coefficient resistance element.

Ph201、Ph202、...、Ph401 光電耦合器。 R206、R207、...、R411 電阻。 sera、SCR2 矽控整流器。 L100、L101 電感線圈。Ph201, Ph202, ..., Ph401 photocouplers. R206, R207, ..., R411 resistors. sera, SCR2 silicon controlled rectifier. L100, L101 inductance coil.

THU、T202、...、T302 電晶體。THU, T202, ..., T302 transistors.

Tia、TR2、TR3、…、TRN 高頻變壓器。 U100 主動功因校正積體電路。 U200、U300 自振盪半橋式驅動積體電路。 U201、U301 並聯穩壓積體電路。 U202、U402、U403 比較積體電路。 U401 電壓調整積體電路。Tia, TR2, TR3, ..., TRN high frequency transformers. U100 Active Power Factor Correction Integrated Circuit. U200, U300 self-oscillating half-bridge drive integrated circuit. U201, U301 parallel voltage regulator integrated circuit. U202, U402, U403 compare integrated circuits. U401 Voltage adjustment integrated circuit.

VR201、VR202、…、VR301 可變電阻。 Ζ100 防電擊元件。 19VR201, VR202, ..., VR301 variable resistors. ZE100 anti-shock element. 19

Claims (1)

1243!益794號94年7月 4日修正替換本 拾、申請專利範圍： 6 本 1· 一種高頻電源裝置，其至少包括： 主動功因校正電路：輸人端為交流電源，具有功率因數之校正與電壓提升 之功能，輸出端接至直流電源供應電路； 直流電源供應電路·輸出穩定直流電源，以提供負載電力； 保護電路：係由比較積體電路所構成，當㈣過載時，可使直流電源供應 電路及主動功因校正積體電路停止動作而無直流電 源輸出； 脈波頻率調變電路及高頻功率輸出電路：電連接至主動功因校正電路之輸 出端，用以控制開關電路，經由高頻變壓器提供電能 給輸出端。 2·如申明專利範圍第1項之高頻電源裝置，其中主動功因校正電路之輸入 端為父流電源輸入端，其輸入電壓自9〇v至265V，電源頻率嫌至· 皆可使用。 3·如申明專利feu第1項之高頻電職置，其巾直流電源供應電路，係由 自振盈半橋式驅動積體電路所構成，其電壓㈣部份_可調式精密並 聯穩壓積體電路，可得2.5V至36V可調式精密並聯穩壓器之功效。 4·如申請專利範圍第丨項之高頻電源裝置，其中直流電源供應電路之直流 輸出係多組輸出，各組採獨立供電方式。 如申π專利|&圍第3項之高頻電源裝置，其中直流電源供應電路使用可 周式精密並聯穩壓積體電路、電阻、電容器組成一電路，可使自振盈半 橋式驅動積體電路之自振盈頻率下降或上升，以達原先之電壓設定。 20 1243525 第93118794號94年7月4日修! 6·如申#專^圍第5項之高観源裝置，其巾使自振财橋式驅動積體 電路之自振盪_下降或上升之電路，可獅反邏輯之動作設計。 7·如申#專利域第丨項之高頻電職置，其巾直流獅供應電路之輸出 端.又有直机電源輸出指示電路，其由限流電阻及發光二極體(圆、二極 體所構成其目的在指示直流供電端有直流電存在。 8·如申α專她圍第丨項之高頻電職置，其巾直流電驗應電路設有輸 出直流過電流保護電路，係由比較積體電路所構成，當負載過載時，由 光電麵口 H負貝錢直流電源供應電路自己及主動功因校正積體電路 停止動作而無直流電源輸出。 9·如申#專利縫第1項之馬頻電職置，其巾直流電源供電於直流電源 負載系、先右負載超載或負載短路時，利用比較積體電路使直流電源供 應電路自己無電源供應及辨因數校正電路之主動功因校正積體電路 之升壓功能消失，使其電壓下降；同時若冷陰極管保護電路動作，其直 流電源供舰路所_之自顧半橋式购積體電路振盈停止 ，此時停 止直流電源供應。 1〇·如申請糊刪1⑽师跑，㈣撤《供綱 自振蘯半橋式驅動積體魏輪_分概到功率金職化物場效電 體(P_r MOSFET)之間極端’其特徵為得兩功率金屬氧化物場效電 體(P_娜闕之輸入端，可避免雜訊干擾半橋式減電路，以 代傳統式變壓器耦合方式。 11·如申請專利範圍第1243! Yi 794 No. July 4, 1994 revised and replaced the scope of the patent application: 6 books 1 · A high-frequency power supply device, which at least includes: Active power factor correction circuit: the input end is an AC power supply with a power factor The function of correction and voltage boost, the output terminal is connected to the DC power supply circuit; the DC power supply circuit · outputs a stable DC power supply to provide load power; the protection circuit is composed of a comparative integrated circuit. The DC power supply circuit and the active power correction integrated circuit are stopped and no DC power is output; the pulse wave frequency modulation circuit and the high-frequency power output circuit are electrically connected to the output end of the active power correction circuit for control The switching circuit supplies power to the output terminal through a high-frequency transformer. 2. If the high-frequency power supply device according to item 1 of the patent scope is declared, the input terminal of the active power factor correction circuit is the input terminal of the parent current power supply, the input voltage is from 90v to 265V, and the power frequency can be used. 3. As stated in the high-frequency electric position of the first item of patent feu, the DC power supply circuit is composed of a self-vibrating half-bridge driver integrated circuit, and its voltage ㈣ part _ adjustable precision parallel voltage regulator Integrated circuit can get the effect of 2.5V to 36V adjustable precision shunt regulator. 4. If the high-frequency power supply device according to item 丨 of the patent application, the DC output of the DC power supply circuit has multiple sets of outputs, and each set adopts independent power supply. Such as the application of the π patent | & the third high-frequency power supply device, in which the DC power supply circuit uses a perimeter-type precision parallel voltage stabilizing integrated circuit, a resistor, and a capacitor to form a circuit, which enables self-vibrating half-bridge driving The self-oscillation frequency of the integrated circuit decreases or increases to reach the original voltage setting. 20 1243525 No. 93118794 Repaired on July 4, 1994! 6 · Rushen #Special ^ High Gaoyuan device of item 5, which makes the self-oscillation bridge-driven integrated circuit self-oscillation _ falling or rising circuit, But lion anti-logic action design. 7 · As for the high-frequency electric position of item # 1 in the patent field, the output end of the DC lion supply circuit. There is a direct power output indication circuit, which is composed of a current-limiting resistor and a light-emitting diode (round, two The purpose of the pole body is to indicate the existence of DC power at the DC power supply end. 8 · If the high-frequency power position of item 丨 is applied to α, the DC test circuit shall be provided with an output DC overcurrent protection circuit. Compared with the integrated circuit, when the load is overloaded, the photoelectric surface port H negative shell DC power supply circuit itself and the active power due to the correction of the integrated circuit stop operation and no DC power output. 9 · 如 申 # Patent joint No. 1 Xiang's horse frequency power position, when the DC power supply is used to power the DC power load system, when the right load is overloaded or the load is short-circuited, the comparison integrated circuit is used to make the DC power supply circuit without its own power supply and the active function of the factor correction circuit. The boost function of the correction integrated circuit disappears, causing its voltage to drop. At the same time, if the cold-cathode tube protection circuit is activated, its DC power supply will be used by the shipyard. Stop the DC power supply. 10. If you want to delete 1 teacher run, withdraw from the "Spontaneous self-oscillation half-bridge drive integrated device Wei Lun_ points summary to the power metallurgy field effect electric body (P_r MOSFET) Extreme 'is characterized by a two-power metal-oxide field-effect electric body (P_Nano's input terminal, which can prevent noise from interfering with the half-bridge subtraction circuit and replace the traditional transformer coupling method. 項^頻置’其中高頻變壓器採用多組次級 21 1243525 93118794號94年7月4曰修正替換本 圖。 a如多1項之高_裝置，其中高頻變物贼用-或 串接’以扁平化變屢器。 讥如旁切專利範圍第】項之高頻電源裝置， 橋式振盈電路。 -料橋式《電路可以是全 Η—種高頻電源裝置，其至少包括·· 主動功因校正電路··輸入端為 ，‘原具有功率因數之校正與電紐升 之功此，輸出端接至脈波頻率調變電路及高頻功率輸 出電路； 波 脈波頻率嶋⑽轉輪输:嶋霞魏以各式脈 頻率調變積體電路為主電路，電連接至主動供因校正 電路之輸出端，用以控制開關電路，經由高頻變壓器 &供電能給輪出端； 冷陰極管群保護電路：提供冷陰崎（ccfl)之管電壓異常伴護· 啟動電路：當負載系統受有直流電源供應時，其會產生一電壓給《波頻 啟動之作用； 率電路及高頻功率輸出電路回應，以此特徵做為 及提高 其可使冷陰極管群得到穩定之供電高頻電壓，以得最佳之發光效率 其光源品質。 15.如申請專利第14項之高頻電源裝置，其中主動侧校正電路之輪 入端為交流電源輸人端’其輸入電壓自解至贿，電源頻率^ 22 1243525 第93118794號94年7月4曰修正替換本 至60Hz皆可使用。 16·如申請專利範圍第14項之高頻電源裝置，其中脈波頻率調變電路以脈 波頻率調變積體電路為主電路。 Π.如申請專利細第14項之高頻電源裝置，其中脈麵率調變電路使用 脈波頻率調變積體電路為主電路，並以光電麵合器做為控制脈波頻率調 變積體電路脈波頻率調變之元件。 18. 如申請專利範圍第14項之高頻電源裝置，其中脈波頻率調變電路及高 頻功率輸出f路之自紐半橋式驅_舰路輸㈣分別送到功率金 屬氧化物場效電晶體(PowerMOSFET)之閘極端，其特徵為得兩功率金 屬氧化物場效電晶體(PowerMOSFET)之輸入端，可避免雜訊干擾半橋 式振盪電路，以取代傳統式變壓器耦合方式。 19. 如申請專利麵第18項之高頻電雜置，其中高頻變壓輯用多組次 級圈。 20·如申請專利範圍第19項之高頻電源裝置，其中高頻變壓器可以使用一 或多組串接，以扁平化變壓器。 21·如申請專利麵第18項之高頻電源裝置，其巾半橋式振魏路可以是 全橋式振盪電路。 22·如申請專利範圍第14項之高頻電源裝置，其中脈波頻率調變電路及高 頻功率輸出電路更包含精密電壓調整器，其精密電壓調整器係為可，弋 精密並聯穩壓積體電路，其功效為鎖定冷陰極管群具有一穩定之高頻電 壓供應。 23 1243525 第9：3118794號94年7月4日修正替換本 23·如申明專利|&圍第14項之南頻電源裝置，其中啟動電路係當負載系統 受有直流電源供應時，其會產生一電壓給予回應，此電壓可設為5v或 其它值。 24·如申μ專她圍第14㉟之高頻電職置，其中冷陰極管群保護電路更 設有設延時電路，以避免當本發關機時，其各部份之電壓不穩定，而 誤使過高電壓或過低電壓之保護電路動作。 25·—種高頻電源裝置，其至少包括··The term ^ frequency setting 'uses multiple sets of secondary 21 2143525 93118794 No. July 4, 1994 to amend and replace this figure. a The device is as high as 1 item, in which the high-frequency transformer is used or connected in series to flatten the transformer. For example, the high-frequency power supply device according to Item No. of the patent, bridge-type vibration surplus circuit. -Material bridge type "The circuit can be a full-fledged high-frequency power supply device, which includes at least an active power factor correction circuit. The input end is," the original has the power factor correction and the power of the power button, the output end Connected to pulse frequency modulation circuit and high-frequency power output circuit; Wave pulse frequency 嶋 ⑽ rotary wheel output: Xi Xiawei uses various pulse frequency modulation integrated circuits as the main circuit and is electrically connected to the active factor correction The output end of the circuit is used to control the switching circuit, which can be supplied to the wheel output through a high-frequency transformer & cold cathode tube group protection circuit: Provides tube voltage abnormal accompanying protection for cold yin qi (ccfl) startup circuit: when the load When the system is supplied with a DC power supply, it will generate a voltage to the effect of "wave frequency start; frequency circuit and high frequency power output circuit respond, using this feature as an improvement and it can make the cold cathode tube group get stable power supply. Frequency to achieve the best luminous efficiency and light source quality. 15. The high-frequency power supply device according to item 14 of the application, in which the wheel-in end of the active-side correction circuit is an AC power input terminal. Its input voltage is self-releasing to a bribe, and the power supply frequency is ^ 22 1243525 No. 93118794 No. July 1994 It can be used from the 4th edition to 60Hz. 16. The high-frequency power supply device according to item 14 of the patent application, wherein the pulse frequency modulation circuit is based on the pulse frequency modulation integrated circuit. Π. The high-frequency power supply device according to item 14 of the patent application, in which the pulse rate modulation circuit uses the pulse wave frequency modulation integrated circuit as the main circuit, and the photoelectric surface coupler is used to control the pulse wave frequency modulation. Integrated circuit pulse frequency modulation component. 18. For the high-frequency power supply device under the scope of patent application No. 14, the pulse wave frequency modulation circuit and the high-frequency power output f from the New Zealand half-bridge drive are sent to the power metal oxide field. The gate of the power-effect transistor (PowerMOSFET) is characterized by the input end of a two-power metal-oxide field-effect transistor (PowerMOSFET), which can prevent noise from interfering with the half-bridge oscillation circuit and replace the traditional transformer coupling method. 19. For the high-frequency electric hybrid of item 18 of the patent application, in which the high-frequency transformer series uses multiple sets of secondary coils. 20. The high-frequency power supply device according to item 19 of the application, wherein the high-frequency transformer can use one or more groups connected in series to flatten the transformer. 21. If the high-frequency power supply device according to item 18 of the patent application, the half-bridge vibration path can be a full-bridge oscillation circuit. 22 · If the high-frequency power supply device according to item 14 of the scope of patent application, the pulse wave frequency modulation circuit and the high-frequency power output circuit further include a precision voltage regulator, the precision voltage regulator is available, and the precision parallel voltage regulation The integrated circuit has the effect of locking the cold cathode tube group to have a stable high-frequency voltage supply. 23 1243525 No. 9: 3118794 Amended and replaced on July 4, 1994. 23 · As stated in the patent | & South frequency power supply device of the 14th item, where the starting circuit is when the load system is supplied with DC power, it will Generate a voltage to respond, this voltage can be set to 5v or other values. 24 · Ru Shen ’s high-frequency electric post around the 14th, among which the cold-cathode tube group protection circuit is also provided with a delay circuit to prevent the voltage of each part of the unit from being unstable when the power is turned off. Activate the protection circuit of excessively high voltage or excessively low voltage. 25 · —A high frequency power supply device, which includes at least ... 主動功因校JL電路·輸人端為交流騎、，具有功率隨之校正與電壓提升 之功旎，輸出端接至直流電源供應電路； 直流電源供應電路：輸_定直流魏，以提供負載電力； 保護電路：她較輯路所構成，t _斜，可細電源供應 電路及主動功因校正髓電路停止動作而無直流電 源輸出； 脱波頻率調㈣路及南頻功率輸出電路··電連接至主動功因校正電路^Active power factor correction JL circuit. The input terminal is AC riding. It has the function of power correction and voltage increase. The output terminal is connected to the DC power supply circuit. The DC power supply circuit: input and output DC power to provide the load. Electric power; protection circuit: she is composed of a series circuit, t _ slant, can be fine power supply circuit and active power no DC power output due to the stop of the correction circuit; de-wave frequency modulation circuit and south frequency power output circuit ·· Electrically connected to an active power factor correction circuit ^ 出端’用以控制開關電路，經由高頻變壓器提供; 給輸出端； 冷陰極管聰護電路··域冷陰姆（ccfl)之管霞異常保護； 啟動電路：#負载錢受有直流電源供«，其會產生-龍給予脈浴 率機電路及軸辨輸$電_應，以此特徵你 啟動之作用； 其可使冷陰歸科顯t供電高_壓，轉雜讀光效率及提 24 1243525 第93118794號94年7月4日修正替換本 其光源品質。 26·如申料利細第25項之高辆源裝置，其巾絲功g校正電路之輸 入端為交流電源輸入端，其輪入電壓自9〇v至265V，電源頻率5〇Hz至 60Hz皆可使用。 27·如申請專利範圍第25項之高_源裝置，其巾直流電源供應電路，係 由自振鮮橋式驅動積體電路所構成，其糕輸出部份採用可調式精密 並聯穩壓積體電路，可得2.5V至36V可調式精密並聯穩壓器之功效。 28.如申請侧範圍第25項之高_源裝置，其巾直流電源供應電路之直馨 流輸出係多組輸出，各組採獨立供電方式。 29·如申請專利範圍第25項之高頻電源裝置，其中直流電源供應電路使用 可調式精密並聯穩壓積體電路、電阻、電容器組成一電路，可使自振盪 半橋式驅動積體電路之自紐鮮下降或上升，以達原先之電壓設定。 30. 如申請專利範圍第29項之高頻電源裝置，其中使自振齡橋式驅動積 體電路之自振盪頻率下降或上升之電路，可採用反邏輯之動作設計。 31. 如申睛專利耗圍第25項之高頻電源裝置，其中直流電源供應電路之輸攀 出端設有直流電源輸出指示電路，其由限流電阻及發光二極體獅、二 極體所構成，其目的在指示直流供電端有直流電存在。 32·如申請專利犯圍第25項之高頻電源裝置，其中直流電源供應電路設有 輪出直流過電雜護魏，係姐鋪體電蘭誠，當㈣過載時， 由光電搞口器負貝逼使直流電源供應電路自己及主動功因校正積體電 路停止動作而無直流電源輸出。 25 1243525 第93118794號94年7月4日修正替換本 33·如申料麵圍第25項 只电原裝置’其中直流電源供電於直流電 源負載系統，若負載超載或負載 π路時，利用比較積體電路使直流電源 供應電路自己無電源供應及功率 手u數;^正電路之主動功因校正積體電 路之升塵功能消失，使其電屡下降；同時若冷陰極管保護電路動作，其 直机电源供應電路所知用之自振盈半橋式驅動積體電路振盈停止，此時 停止直流電源供應。 34·如申清專利耗圍第25項之高頻電源裝置，其中其中直流電源供應電路 之自振盈半橋式驅動積體電路輸出端分別送到功率金屬氧化物場效電 晶體（Power M〇SFET)之閘極端，其特徵為得兩功率金屬氧化物場效 電晶體（P〇WerMOSFET)之輸入端’可避免雜訊干擾半橋式振盪電路， 以取代傳統式變壓器耦合方式。 35.如申請專利細第25項之高頻電職置’其中高輕壓祕用多組次 級圈。 36·如申叫專利範圍第25項之高頻電源裝置，其中高頻變壓器可以使用一 或多組串接，以扁平化變壓器。 37.如申請專概圍第25項之高頻電織置，其巾半橋式振盪電路可以是 王橋式振盈電路。 38·如申請專利細第25項之高頻電源裝置，其中脈波頻率調變電路以脈 波頻率調變積體電路為主電路。 39.如申請專利細第25項之高頻電雜置，其巾脈_率調魏路使用 脈波頻率調變積體電路為主電路，並以光電輕合器做為控制脈波頻率調 26 1243525 第93118794號94年7月4日修正替換本 變積體電路脈波頻率調變之元件。 40·如申請專利範圍第25項之高頻電源裝置，其中脈波頻率調變電路及高 頻功率輸出電路之自振盪半橋式驅動積體電路輸出端分別送到功率金 · 屬氧化物場效電晶體(Power MOSFET)之閘極端，其特徵為得兩功率金 屬氧化物場效電晶體(Power MOSFET)之輸入端，可避免雜訊干擾半产 式振盪電路，以取代傳統式變壓器耦合方式。 41·如申請專利範圍第25項之高頻電源裝置，其中脈波頻率調變電路及高 頻功率輸出電路更包含精密電壓調整器，其精密電壓調整器係為可調式 · 精密並聯穩壓積體電路，其功效為鎖定冷陰極管群具有一穩定之高頻電 壓供應。 42.如申4專利範圍第25項之高頻電源裝置，其巾啟動電路係當負載系統 受有直流電源供應時，其會產生一電壓給予回應，此電壓可設為5V或 其它值。 43·如申請專利範圍第25項之高頻電職置，其巾冷陰極f群保護電路更 設有設延時電路，以避免當本發簡機時，其各部份之電壓不穩定，❿ · 誤使過高電壓或過低電壓之保護電路動作。 27The output terminal is used to control the switching circuit and is provided through the high-frequency transformer; to the output terminal; the cold cathode tube protection circuit · · the tube cold cathode (ccfl) tube Xia abnormal protection; start circuit: #LOAD 钱 受 有 VDC power For «, it will produce-Long gives the pulse bath rate machine circuit and axis recognition and transmission $ electricity _ response, with this characteristic you start the role; It can make cold Yinyin Ke significantly power supply high voltage, turn miscellaneous reading efficiency Mention 24 1243525 No. 93118794 amended on July 4, 1994 to replace the quality of its light source. 26. For the high-vehicle source device according to item 25, the input terminal of the silk power g correction circuit is an AC power input terminal, and its wheel-in voltage is from 90v to 265V, and the power frequency is 50Hz to 60Hz. Can be used. 27. If the high-source device in the scope of the application for the patent No. 25, the DC power supply circuit is composed of a self-vibrating fresh bridge drive integrated circuit, and the output part of the cake uses an adjustable precision parallel voltage stabilized integrated circuit. The circuit can get the effect of 2.5V to 36V adjustable precision shunt regulator. 28. For the high-voltage source device in the application scope, the direct current output of the DC power supply circuit is multiple sets of output, each group adopts independent power supply. 29. For the high-frequency power supply device under the scope of application for patent No. 25, in which the DC power supply circuit uses an adjustable precision parallel voltage stabilizing integrated circuit, a resistor and a capacitor to form a circuit, which can drive the self-oscillating half-bridge type integrated circuit. Decrease or increase from New Zealand to reach the original voltage setting. 30. For the high-frequency power supply device under the scope of application for patent No. 29, the circuit that makes the self-oscillating bridge-type driving integrated circuit decrease or increase the self-oscillation frequency can be designed with an inverse logic action. 31. The high-frequency power supply device in the 25th item of Shenyan's patent, in which the output end of the DC power supply circuit is provided with a DC power output indicating circuit, which is composed of a current limiting resistor and a light-emitting diode lion, diode The purpose is to indicate the existence of DC power at the DC power supply end. 32. If you apply for a patent for the high-frequency power supply device No. 25, the DC power supply circuit is equipped with a wheel-out DC overcurrent protection guard, which is the electric power of Lancheng. When the overload is overloaded, the photoelectricity is used to make a mouthpiece. Negative force forces the DC power supply circuit itself and the active power to stop outputting because of the correction integrated circuit stop. 25 1243525 No. 93118794 amended and replaced on July 4, 1994. 33. If the material surface encloses item 25, only the original device 'where DC power is supplied to the DC power load system. If the load is overloaded or the load is π, use the comparison The integrated circuit enables the DC power supply circuit to have no power supply and no power supply; the active power factor of the positive circuit corrects the dust raising function of the integrated circuit and causes its power to drop repeatedly; at the same time, if the cold cathode tube protection circuit operates, The self-vibrating half-bridge drive integrated circuit used by the direct power supply circuit is known to stop vibration surplus, and at this time, the DC power supply is stopped. 34. The high-frequency power supply device according to claim 25 of the patent application, in which the output of the self-vibrating half-bridge driver integrated circuit of the DC power supply circuit is sent to the power metal oxide field effect transistor (Power M 〇SFET) gate extreme, which is characterized by a two-power metal oxide field effect transistor (P0WerMOSFET) input 'can prevent noise from interfering with the half-bridge oscillation circuit, replacing the traditional transformer coupling method. 35. The high-frequency electric position of item 25 of the patent application, in which there are multiple sets of secondary loops for high and low voltage applications. 36. For example, the high-frequency power supply device claimed in item 25 of the patent scope, in which the high-frequency transformer can use one or more groups connected in series to flatten the transformer. 37. If applying for the high-frequency electrical weaving of item 25, the half-bridge oscillation circuit may be a Wangqiao vibration surplus circuit. 38. The high-frequency power supply device according to item 25 of the patent application, wherein the pulse wave frequency modulation circuit is based on the pulse frequency modulation integrated circuit as the main circuit. 39. For the high-frequency electrical miscellaneous item No. 25 of the patent application, its pulse-rate modulation Wei Road uses a pulse frequency modulation integrated circuit as the main circuit, and uses a photoelectric light coupler as a control pulse frequency adjustment. 26 1243525 No. 93118794 July 4, 1994 Amend and replace the components of the pulse wave frequency modulation of this transformer circuit. 40. The high-frequency power supply device according to item 25 of the patent application, in which the output ends of the self-oscillating half-bridge driving integrated circuit of the pulse wave frequency modulation circuit and the high-frequency power output circuit are respectively sent to the power metal. The gate extreme of a field effect transistor (Power MOSFET) is characterized by the input of a two-power metal oxide field effect transistor (Power MOSFET), which can prevent noise from interfering with the semi-productive oscillation circuit and replace the traditional transformer coupling. the way. 41. If the high-frequency power supply device of the 25th scope of the patent application, the pulse wave frequency modulation circuit and the high-frequency power output circuit further include a precision voltage regulator, the precision voltage regulator is adjustable · precision parallel voltage regulator The integrated circuit has the effect of locking the cold cathode tube group to have a stable high-frequency voltage supply. 42. The high-frequency power supply device according to item 25 of the Patent No. 4 patent, whose starting circuit is a response to a voltage generated by the load system when it is supplied with DC power. This voltage can be set to 5V or other values. 43 · If the high-frequency electric position of item 25 of the application scope of the patent, the cold cathode f group protection circuit is further provided with a delay circuit to avoid the voltage instability of each part of the device when it is used in this machine. · The protection circuit of excessively high voltage or excessively low voltage is actuated by mistake. 27