mjyL^oy 五、新型說明： 【新型所屬之技術領域】 本創作係與電源系統相關， 極體之電源紐相i u以配口 n 【先前技術】 ^著^技發展進步，近年來各種朗、家用以及個人的 益普i。除了功能與外觀之外，產品的安全性 設計J❾，。如何避免使用者因產品的不當 又r害’是許多產品設計者和製造商關注的議 碭。目别已、、赠許多針對這個問題制定的安全規範。 ’電子產品中較鄰近市電接收端的部份存在可 =人體4害的較高電壓；根據某些安全規範，這些高壓 側電路必賴者可麵的部份加以隔絕。此外，電子產 H内部的高壓側電路與低壓側電路之間還必織有適當 的隔離措施。 明參關（A) ’圖-⑷為-典型發光二極體光源及其 ，電系統的示意圖。輕轉換電路12負責將市電供應璋ι〇 θ供的父流電壓轉換並調整為發光二極體單元14所需要的直 流電屢。-般而言’電壓轉換電路12即屬於上述高塵側電 路’發光-極體單元14則是屬於上述低壓側電路。 對發光二極體光源系統來說，電壓轉換電路12輸出的直 流電壓vDC通常為定值。然而實務上，發光二極體單元14中 4 發光二極體在發亮時所需要的跨射能都不盡相同。 每—顆魏二鋪都财足以充分發亮的跨壓，電 上W兒路12提供的直流電廢VDC通常會被設計為高於實忾 上發光二極體單元14的麵需求。 q I際 比較Ϊ圖了⑻所示，先前技術大多會在低壓側電路中設置〜 係用^ 一備降鋒〇〇St/bUCk)單元18。比較單元16 斷應如何:體f端帽，並根據該等電_ 串發光嫌降解元18負責在各 別接供° Λ、電贿換電路12輸出的直流電壓VDC之間分 壓如、-補償跨壓，藉此調節各串發光二極體所承受的跨 ，而，將直流霞Vd。設計為高於實際需 ^ ；s 兀18通吊相虽耗能，其體積亦相當龐大。因此 ΐ節的產品趨勢，如圖—⑼所示之_升壓/降壓 早兀18的電路架構是比較不理想的。 ^ rr搜 [新型内容】 本創作為發光二極體光源的電源系統提供了 構。藉由根據發光二極體的操作電流調整高 新= 本創作的電源系統不需要採用先前技術中的升壓 根， 町遠成為發光二極體光源提供適當的電壓之致果。早70即 根據本創作之-具體實施例為一發光二 其中包含-發光二極體裝置、—電流平衡原糸統， 可I置、—比較裝 置、-電源裝置以及-控雜置。該電流平衡裝置编接該發 光二極體裝置，用以根據該發光二極體裝置之—操作狀況產 生一回授電壓。該比較裴置比較該回授電壓與一參考電壓， 並產生一比較結果。該電源裝置用以將一直流電壓提供給該 發光二極體裝置。該控制裝置係用以根據該比較結果產生一 控制信號。該賴裝置轉該蝴錄選雜地調整該直流 電壓。 机 根據本創作之另一具體實施例為用以配合二發光二極 光源的電源供應系統’其中包含—電流平衡|置、—比 ί 裝置。_平衡裝_‘發 先-極體裝置。該比k裝置係用以_該電流平衡裝置 生之-回授電壓，並產生-比較結果i電源裝 直流電壓提供給紐光二極鮮置。雜繼置制以根據 該比較結果產生-控輸號。該電源裝置係 選擇性地調整該直流電壓。 就 極系統可被廣泛應用在各種採用發光二 f體做為切的電子產品中。本創作 藉由以下詳述及所附圖式得到進一步的瞭解。 月砰1以 【實施方式】 請參閱圖二⑷，圖二⑷係繪稀據本創作之第一呈體 實施例中的發光二健光源线之示意圖。如圖二(A)所;， 發光二極體光源系統20包含一電源裝置22、一 裝置⑷-電好敏置25、—比絲置26从—軸裝 置28。於實際應用中，發光二極體裝置24可包含一組或多 組以串聯方式連接的發光二極體，但不以此為限。 於此實施例中，電源裝置22接收由市電供應蜂1〇提供 之父ml電壓VAC。電源裝置22負責將交流電壓vac轉換為 -直流電塵vDC ’並將該直流電壓Vdc提供給發光二極體裝 置24。易言之，電源裝置22主要係用以提供交流/直流轉換 的作用。直"IL電壓VDC的咼低則係根據發光二極體裝置％的 需求而定。 如圖二(A)所示，電流平衡裝置25耦接發光二極體裝置 24 ’並且根:發光二才亟體裝f 24之-操作狀況產生一回授電 壓(Vfb)。比較裝置26係用以將電流平衡裝置之一回授電壓 與一參考電壓(Vref)做比較。舉例而言，假設發光二極體裝置 24中的某一組發光二極體未獲得足夠的跨壓，電流平衡裝置 25所產生的回授電壓(vFB)就會低於參考電壓，比較裝 置26可產生一相對應的比較結果，並將該比較結果提供給控 制裝置28。控制裝置28會根據該比較結果產生一控制信 號’要求電源裝置22提高直流電壓Vdc。換句話說，本實施 例中的直流電壓VDe為可調整的。於實際細巾，根據本創 作之控制裝置28可採用德州儀器所生產的π UCC256〇〇積 體電路來實現，控制裝置28所產生的控制訊號之形態可以是 脈衝兔度調變信號或者是頻率調變信號。 如圖二(B)所示’根據本創作之比較裝置26可包含一電 M392489 麼比較器26A。電壓比較5| 26A之一笛 _ 平又裔之一弟一輸入端係連接於電 流平衡震置25簡取回授電壓(I)，並且電壓味器说 之-，二輸人端係連接於—參考電壓埠^。於此實施例 ^田VFB ]於VrEF時，控制裝置28會要求電源裝置22提 南vDC;反之，當Vfb大於Vr£f時’控制裝置會要求電 源裝置22降低VDC。 、請參閱圖二(〇,圖二(Q進-步繪示了根據本創作之電 流平衡裝置Μ的詳細實施範例。為簡化圖示，以發光二極體 裝置24僅包含兩串發光二極體的情況為例。此範例中的電流 平衡裝置25係由電阻(R1.、呦、二極體(m、Μ)、金氧半場 效電晶體元件_、M2)，以及—電流平衡控制電路25八組 成。圖中標示為ΤΙ、Τ2、Τ3的節點也都是連接至電流平衡 控制電路25Α。 如圖二(C)所示，兩個電晶體元件(ΜΙ、M2)的三個端點 分別被耦接至電流平衡控制電路25A。電流平衡控制電路 25A會控制兩個電晶體元件(Ml、M2)，強迫流經兩個電阻 (ία、R2)的電流值相等。兩個二極體(D)之第一端分別耦接至 一串發光二極體，第二端則耦接至同一端點（以符號X表 不）；端點X的電壓即為前述回授電壓(Vfb)。於實際應用 中笔々IL平衡控制電路25A可以NIKO Semiconductor公司生 產的GS7L05積體電路來實現。 請參閱圖二(D)，圖二(D)進一步繪示了根據本創作之電 8 源裝置22的詳細實施範例。如圖二①)所示，本範例中的電 源裝置22包含一整流器(rectifier) 22A、一功率因數校正電路 22B ’以及一直流/直流轉換器22C。整流器22八係由複數個 二極體依特定排列方式組成，用以將交流電流Vac初步轉換 成一直流電流。於實際應用中，整流器22A可以為一全波整 流器。 … 功率因數校正電路22B係連接於整流器22A和直流/直 流轉換器22C之間，用以提供一功率因數校正功能。功率因 數係用以表示有效功率與總耗電量之間的關係，也就是有效 功率除以總耗電量的比值。功率因數可轉量電力被有效利 用的程度。功率因素值越大，代表電力利用率越高。藉由功 率因數校正電路22B的作用，發光二極體光源系統2〇整體 的效能可被提升。 直机/直流轉換器22C係用以將功率因數校正電路22B輸 出的直流電壓轉換成適用於發光二極體裝置24的直流電遷 vdc。於實際應用中’根據本創作的直流/直流轉換器2冗可 =為-推拉式(ρ_·_轉換器、—全橋式卿枷㈣轉換 器、-半橋式(祕bridge)轉換器、一返馳式_ack)轉換 器，一直流升壓(boost)轉換器或一直流降壓(buck)轉換器，但 不以此為限。如圖—(C)所示，於此範例中，控制裝置Μ產 生的控制#雜用以控制電源裝置a中的直流/直流轉換器 22C，藉此選擇性地調整直流/直流轉換器沉輸出至發光二 極體裝置24的直流電壓Vdc。 此外’於圖二(D)所示之範例中’比較裝置26與控制裝 罢 0〇 之間設置有一隔離裝置27，用來隔離高壓側電路與低 壓側電路，以符合安規規定。位在低壓側的比較裝置26所產 生之比較結果係透過隔離裝置27傳送至位在高壓側的控制裝 置28。實務上，隔離裝置27可以由光耦合器(〇pt〇_c〇upler)或 隔離變壓絲實現。此外，當電職置22本身屬於低壓侧 (例如採用直流升壓轉換器或直流降壓轉換器時），不需使用 隔離裝置。 請參閱圖二(E)，圖二(E)係將圖二(〇)中之直流/直流轉換 态22C及隔離裝置27做更詳細之舉例說明。圖二(E)中的直 机/直流轉換益22C為一半橋式轉換器，並且隔離裝置π係 以一光耦合器來實現。此半橋式轉換器中的兩個電晶體元件 之閘極(標示為ΤΙ、T2)可受控制裝置28的影響，藉此調整直 流/直流轉換器22C的輸出電壓。 根據本創作之第一具體實施例為用以驅動一發光二極體 裝置的電源供應系統。此電源供應系統包含如圖二(Α)所示之 電源裝置22、電流平衡裝置25、比較裝置20以及控制裝置 28。如先前所述，電源裝置22負責將一直流電壓提供給發光 二極體裝置。電流平衡裝置25連接發光二極體裝置並產生一 回授電壓。比較裝置26比較該回授電壓與一參考電壓後產生 -比較結果。控織置28係用以根據該比較結果產生一控制 10 M392489 . « 信號。電源裝置22係根據該控制信號選擇性地調整該直流電 壓VDC。實務上，該控制訊號的型態可以是脈衝寬度調變信 號或者是頻率調變信號。mjyL^oy V. New description: [New technology field] This creation department is related to the power system. The power supply of the polar body is iu with the matching port. [Previous technology] ^The development of technology has progressed in recent years. Home and personal Ipo. In addition to the function and appearance, the safety of the product is designed. How to avoid users' improper product quality is a concern of many product designers and manufacturers. I have given a lot of safety regulations for this issue. The part of the electronic product that is closer to the receiving end of the mains has a higher voltage that can be harmful to the human body; according to certain safety regulations, these high-voltage side circuits must be isolated from the face that can be covered. In addition, proper isolation measures must be woven between the high-voltage side circuit and the low-voltage side circuit inside the electronic product H. Mingshen (A) ‘Fig.-(4) is a schematic diagram of a typical light-emitting diode source and its electrical system. The light conversion circuit 12 is responsible for converting and adjusting the parent current voltage supplied from the commercial power supply 璋ι θ to the DC power required by the light-emitting diode unit 14. In general, the voltage conversion circuit 12 belongs to the high-dust side circuit, and the light-emitting body unit 14 belongs to the low-voltage side circuit. For a light-emitting diode source system, the DC voltage output from the voltage conversion circuit 12 is typically constant. However, in practice, the cross-emission energy required for the four light-emitting diodes in the light-emitting diode unit 14 to illuminate is different. Each Wei-Bai is rich enough to make a full cross-voltage. The DC waste VDC provided by W Er Lu 12 is usually designed to be higher than the surface requirement of the LED unit 14 on the solid. As shown in (8), the prior art mostly sets the unit 18 in the low-voltage side circuit to use the unit. The comparing unit 16 breaks down how to: the body f end cap, and according to the electric _ string illuminating degradation element 18 is responsible for dividing the voltage between the DC voltage VDC outputted by the respective circuit 电, the electric bribe replacement circuit 12, The cross-pressure is compensated, thereby adjusting the span of the string of light-emitting diodes, and the DC Xia Vd. The design is higher than the actual need; s 兀 18 through the suspension phase energy consumption, its volume is also quite large. Therefore, the product trend of the chastity, as shown in Figure-(9), is not ideal for the circuit structure of _Boost/Buck. ^ rr search [New content] This creation provides a power supply system for a light-emitting diode source. By adjusting the operation current according to the operating current of the light-emitting diode = the power supply system of the present invention does not need to use the boosting root in the prior art, and the town is far as the result of providing an appropriate voltage to the light-emitting diode light source. According to the present invention, a specific embodiment is a light-emitting device, which comprises a light-emitting diode device, a current balance system, an I-position, a comparison device, a power supply device, and a control device. The current balancing device is coupled to the light emitting diode device for generating a feedback voltage according to an operating condition of the light emitting diode device. The comparison device compares the feedback voltage with a reference voltage and produces a comparison result. The power supply unit is configured to provide a DC voltage to the LED device. The control device is operative to generate a control signal based on the comparison. The device adjusts the DC voltage to the fuzzy recording. According to another embodiment of the present invention, a power supply system for accommodating a two-emitting two-pole light source includes a current balancing device and a λ device. _ Balanced equipment _ ‘first-polar body device. The ratio k device is used to generate a feedback voltage, and a comparison result i power supply DC voltage is supplied to the neon diode. The hybrid is set to generate a control input number based on the comparison result. The power supply unit selectively adjusts the DC voltage. The polar system can be widely used in various electronic products that use light-emitting diodes as a cut. This work is further understood by the following detailed description and the accompanying drawings. [Embodiment] Please refer to Fig. 2 (4), and Fig. 2 (4) is a schematic diagram showing the light-emitting two-light source line in the first embodiment of the present invention. As shown in Fig. 2(A), the light-emitting diode light source system 20 includes a power supply unit 22, a device (4), a power sensitive device 25, and a wire-to-wire 26 slave-axis device 28. In practical applications, the LED device 24 may include one or more sets of LEDs connected in series, but is not limited thereto. In this embodiment, the power supply unit 22 receives the parent ml voltage VAC provided by the mains supply bee. The power supply unit 22 is responsible for converting the alternating current voltage vac into a direct current electric dust vDC' and supplying the direct current voltage Vdc to the light emitting diode device 24. In other words, the power supply unit 22 is mainly used to provide AC/DC conversion. The direct "IL voltage VDC is low depending on the demand of the LED device. As shown in Fig. 2(A), the current balancing device 25 is coupled to the LED device 24' and generates a feedback voltage (Vfb) from the operating condition of the light-emitting device. The comparing means 26 is for comparing the feedback voltage of one of the current balancing means with a reference voltage (Vref). For example, if a certain group of light-emitting diodes in the light-emitting diode device 24 does not obtain sufficient voltage across the voltage, the feedback voltage (vFB) generated by the current balancing device 25 will be lower than the reference voltage, and the comparing device 26 A corresponding comparison result can be generated and provided to the control device 28. The control unit 28 generates a control signal based on the comparison result, requiring the power supply unit 22 to increase the DC voltage Vdc. In other words, the DC voltage VDe in this embodiment is adjustable. In the actual fine towel, the control device 28 according to the present invention can be implemented by a π UCC256 entangled circuit produced by Texas Instruments. The control signal generated by the control device 28 can be a pulsed rabbit modulation signal or a frequency. Modulate the signal. As shown in Fig. 2(B), the comparison device 26 according to the present invention may include an electric comparator M38489. Voltage comparison 5| 26A one flute _ One of the other brothers is connected to the current balance shock 25 to take the feedback voltage (I), and the voltage scenter says - the two input end is connected to - Reference voltage 埠^. In this embodiment, when VFB is used, the control unit 28 will require the power supply unit 22 to raise the vDC; otherwise, when the Vfb is greater than Vr£f, the control unit will require the power supply unit 22 to lower the VDC. Please refer to Figure 2 (〇, Figure 2 (Q-step shows the detailed implementation example of the current balancing device according to the present invention. To simplify the illustration, the LED device 24 only contains two strings of LEDs. The case of the body is taken as an example. The current balancing device 25 in this example is composed of a resistor (R1., 呦, diode (m, Μ), MOS field device _, M2), and - current balance control circuit 25 octave. The nodes labeled ΤΙ, Τ 2, Τ 3 are also connected to the current balance control circuit 25 Α. As shown in Figure 2 (C), the three end points of the two transistor elements (ΜΙ, M2) They are respectively coupled to the current balance control circuit 25A. The current balance control circuit 25A controls the two transistor elements (M1, M2) to force the current values flowing through the two resistors (ία, R2) to be equal. Two diodes The first end of (D) is coupled to a string of LEDs, and the second end is coupled to the same end point (not shown by symbol X); the voltage at the end point X is the aforementioned feedback voltage (Vfb) In practical applications, the pen 々 IL balance control circuit 25A can be realized by the GS7L05 integrated circuit produced by NIKO Semiconductor. Referring to FIG. 2(D), FIG. 2(D) further illustrates a detailed implementation example of the power source device 22 according to the present invention. As shown in FIG. 2), the power supply device 22 of the present example includes a rectifier. (Rectifier) 22A, a power factor correction circuit 22B', and a DC/DC converter 22C. The rectifier 22 is composed of a plurality of diodes in a specific arrangement for initially converting the AC current Vac into a DC current. In practical applications, the rectifier 22A can be a full-wave rectifier. The power factor correction circuit 22B is connected between the rectifier 22A and the DC/DC converter 22C to provide a power factor correction function. The power factor is used to indicate effective The relationship between power and total power consumption, that is, the ratio of effective power divided by total power consumption. The power factor convertible power is used effectively. The larger the power factor value, the higher the power utilization rate. The overall performance of the LED light source system 2 can be improved by the function of the power factor correction circuit 22B. The straight/DC converter 22C is used to correct the power factor. The DC voltage outputted by 22B is converted into DC current reversal vdc suitable for the light-emitting diode device 24. In practical applications, the DC/DC converter according to the present invention can be used as a push-pull type (p_·_ converter, Full-bridge-style (four) converter, half-bridge (clear bridge) converter, a flyback _ack) converter, a constant-current boost converter or a buck converter. However, it is not limited thereto. As shown in Fig.-(C), in this example, the control device Μ generates control# for controlling the DC/DC converter 22C in the power supply device a, thereby selectively adjusting The DC/DC converter sinks the DC voltage Vdc output to the LED device 24. Further, in the example shown in Fig. 2(D), an isolating device 27 is provided between the comparing means 26 and the control device for isolating the high side circuit and the low voltage side circuit to comply with the safety regulations. The comparison result produced by the comparing means 26 on the low pressure side is transmitted to the control means 28 on the high voltage side through the isolating means 27. In practice, the isolating device 27 can be realized by an optical coupler or an isolated transformer wire. In addition, when the electrical service 22 itself is on the low voltage side (for example, when using a DC boost converter or a DC buck converter), no isolation device is required. Please refer to Figure 2(E). Figure 2(E) shows the DC/DC conversion state 22C and the isolation device 27 in Figure 2 (〇) in more detail. The linear/DC conversion benefit 22C in Fig. 2(E) is a half bridge converter, and the isolation device π is implemented as an optical coupler. The gates (labeled ΤΙ, T2) of the two transistor elements in the half-bridge converter can be affected by the control device 28, thereby adjusting the output voltage of the DC/DC converter 22C. According to a first embodiment of the present invention, a power supply system for driving a light emitting diode device is used. This power supply system includes a power supply unit 22, a current balancing unit 25, a comparison unit 20, and a control unit 28 as shown in Fig. 2 (Α). As previously described, the power supply unit 22 is responsible for providing the DC voltage to the LED device. The current balancing device 25 is connected to the light emitting diode device and generates a feedback voltage. Comparing device 26 compares the feedback voltage with a reference voltage to produce a - comparison result. Control weaving 28 is used to generate a control based on the comparison result. 10 M392489 . « Signal. The power supply unit 22 selectively adjusts the DC voltage VDC based on the control signal. In practice, the type of the control signal can be a pulse width modulation signal or a frequency modulation signal.
與前一個實施例相同的是，本實施例中之電源裝置22亦 可如圖二(D)所示，包含整流器22A、功率因數校正電路22B 以及直流/直流轉換器22C。並且，本實施例中之控制裝置28 亦可以其控制健調整直流/直流轉換n 22c所輸出的直流電 壓VDC。此外，本實施例中之電源供應系統同樣可包含一隔 離裝置，用來講位在高跑_控繼置28與位在低壓側之 比較裝置26。此外’與前一個實施例相同的是，本實施例中 之直流/直流轉換ϋ 22C、隔離裝置27可如圖二(E)所示，以 半橋式轉魅來實現直流/直流轉換！I 22C，並以光輕合器來 實現該隔離裝置。當魏系統22 _直流升壓轉換^直流 降壓轉換器時，不需使用隔離裝置21。As in the previous embodiment, the power supply unit 22 of this embodiment can also include a rectifier 22A, a power factor correction circuit 22B, and a DC/DC converter 22C as shown in FIG. 2(D). Moreover, the control device 28 in this embodiment can also control the DC voltage VDC output by the DC/DC conversion n 22c. In addition, the power supply system of the present embodiment may also include an isolation device for use in the high-running control 28 and the low-voltage side comparison device 26. Further, the same as the previous embodiment, the DC/DC conversion ϋ 22C and the isolation device 27 in this embodiment can be realized by a half bridge type enchantment as shown in FIG. 2(E). I 22C, and the isolation device is realized by a light coupling. When the Wei system 22 _ DC boost converter ^ DC buck converter, the isolation device 21 is not required.
與前一個實施例相同的是，本實施射之電流平衡裝置 25亦可如圖二(c)所示，由一電流平衡控制電路、兩個電晶體 疋件、兩個電阻及兩個二極體組成。兩個二極體ft接在一起 的端點X之電壓為傳送紐較裝置26的回授電愿 上，該電流平衡控制電路可採用祖〇 Semi_uct〇r公 產的GS7L〇5積體電路來實現。 玍 構 本創作為發光二極體統的電源彡統提供了 — 藉由根據^平純置巾_授電_整電源裝 '種新的架 置所輪 11 M392489 出的直流賴，根據本創作的m统不需要採用先前技術 中的升壓/降壓單元，即可達成為發光二極體光源提供適當的 電壓之效果。此外，根據本創作之電料統係根據發光二極 體光源的狀況直接調整電職置之錢 &之大小， 子產品中 會將能量雜在先前技術之細降壓單元巾。根據本創作= 電^統可被廣泛應用在各種制發光二極體做^ 藉由以上較佳具體實施例之詳述，係希望能更加清楚描 述本創作之特徵與精神’而並非赴述所揭露喻佳具體者 施例來對本創作之範疇加以限制。相反地， 八只 /、目的是f台匕 涵蓋各種改變及具相等性的安排於本創作所铲 b 圍的範如。 4請之專利範 12 M392489 【圖式簡單說明】 圖一 (A)與圖一 (B)為典型之發光二極體光源及其供電系 統的示意圖。 圖二(A)〜圖二(E)係繪示根據本創作之第一具體實施例 中的發光二極體光源系統之示意圖。 【主要元件符號說明】 10 :市電供應埠 14 :發光二極體單元 18 :升壓/降壓單元 22 :電源裝置 22B :功率因數校正電路 24 :發光二極體裝置 26 :比較裝置 26A :電壓比較器As in the previous embodiment, the current balancing device 25 of the present embodiment can also be composed of a current balancing control circuit, two transistor components, two resistors and two diodes as shown in FIG. 2(c). Body composition. The voltage of the terminal X of the two diodes ft is connected to the feedback device of the transmission device 26, and the current balance control circuit can be realized by the GS7L〇5 integrated circuit of the public 〇Semi_uct〇r . The creation of the 为 本 提供 提供 提供 提供 提供 提供 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 发光 发光 发光 发光 发光 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 The m system does not need to use the boost/buck unit of the prior art to achieve the effect of providing an appropriate voltage for the light emitting diode source. In addition, according to the condition of the light-emitting diode light source, the size of the electricity and the size of the electric power device is directly adjusted according to the condition of the light-emitting diode light source, and the energy in the sub-product is mixed with the fine pressure-reducing unit towel of the prior art. According to the present invention, the system can be widely used in various light-emitting diodes. By the detailed description of the above preferred embodiments, it is desirable to more clearly describe the features and spirit of the present invention. Explain the specific case of Yu Jia to limit the scope of this creation. On the contrary, eight /, the purpose is f, including all kinds of changes and equal arrangements in the creation of the shovel. 4 Please patent the patent 12 M392489 [Simple description of the diagram] Figure 1 (A) and Figure 1 (B) are schematic diagrams of a typical light-emitting diode light source and its power supply system. 2(A) to 2(E) are schematic views showing a light emitting diode light source system according to a first embodiment of the present invention. [Main component symbol description] 10: Mains supply 埠14: Light-emitting diode unit 18: Boost/step-down unit 22: Power supply device 22B: Power factor correction circuit 24: Light-emitting diode device 26: Comparison device 26A: Voltage Comparators
Ml、M2 :電晶體元件 Rl、R2 :電阻 27 :隔離裝置 12 :電壓轉換電路 16 :比較單元 20 :發光二極體光源系統 22A :整流器 22C :直流/直流轉換器 25 :電流平衡裝置 28 :控制裝置 25A :電流平衡控制電路 D卜D2 :二極體 T1〜T5 :電晶體之端點 13Ml, M2: transistor elements R1, R2: resistor 27: isolation device 12: voltage conversion circuit 16: comparison unit 20: light-emitting diode source system 22A: rectifier 22C: DC/DC converter 25: current balancing device 28: Control device 25A: current balance control circuit Db D2: diodes T1 to T5: terminal 13 of the transistor