201112594 六、發明說明： 【發明所屬之技術領域】 本發明係為一種倍壓電路結構，特別為一種耦合於一變壓 器二次側之倍壓電路結構。 【先前技術】 電源轉換器之功能係為將一輸入電源轉換為一特定規格 之輸出電源，例如交流電與直流電間之轉換或升降電壓輸出 •等。一般傳統電源轉換器係包括一變壓器，其係使用纏繞於同 一鐵心上之二組繞線，透過電磁感應將電力由一電路轉遞至另 一電路。 理想之電源轉換器係不考慮雜散元件的影響，因此其操作 上效率非常高，能量也可做完全之傳遞。然而無論採用何種變 壓線圈之繞製方法，實際之電源轉換器都會含有雜散元件，例 如線圈含有漏感、一次側及二次側間含有耦合電容，以及二次 侧線圈間含有寄生電容等。而此漏感會產生無法預期之電壓突 *波，並且延緩升壓時間，進而增加交換損失與缓振損失，並降 低電源轉換器之可靠度與效率。 在電源轉換器中，輸出電壓係正比於其中變壓器之二次側 繞線圈數與一次側繞線圈數之比值。因此，若欲將電源做高壓 轉換，通常會使得電源轉換器具有一較高之繞線圈數比。然而 漏感與寄生電容亦會隨繞線圈數比加大而提高，而使電源轉換 器受雜散元件共振之影響更為加劇，增加了切換開關之電壓應 力，導致電源轉換器易於燒毁。 201112594 為了解決此一問題，習知之一般電源轉換器之電路設計都 藉由電阻、電容、電感與二極體元件所組成之緩振電路 (Sunber)或稱箝制電路，來抑制由升壓型變壓器中雜散效應 所產生之振盪電壓。然而由於吸受了雜散效應所產生之振盪電 壓，緩振電路將產生了大量之熱效應，並且會造成壓降，進而 使整體電源轉換器之轉換效率大大下降。為了因應上述壓降， 在變壓器上尚需進一步提高變壓器二次側之繞線圈數，方能達 到原有之輸出電壓。因此，緩振電路架構雖能抑制雜散效應所 •產生之振盪電壓，但應用上尚有不少缺點。 而倍壓電路係為將輸入電壓峰值以倍數增加後輸出之電 路，主要包括二極體與電容器兩種主要元件。其係利用二極體 的開關特性產生整流功能，以控制電流方向對電容進行充電， 並利電容器之儲存電荷的充電特性產生濾波功能，以獲取一倍 或數位峰值電壓大小的直流電壓。 第1圖係為習知之一種倍壓電路示意圖。第2圖係為第1 圖之倍壓電路之輸出電壓波型示意圖。其中，於二次側線圈 ® N2之兩端之感應電壓峰值係為Vn2，於是在倍壓電路之二輸 出端之間具有一電壓差V〇等於2Vn2。此一架構之倍壓電路雖 然簡單，然而由於只有使用二電容C1及C2來儲能，因此在 電壓輸出上雖能達到2Vn2之峰值，但仍具有一較大之漣波， 並且其輸出電流也容易受到負載影響而不穩定。 201112594 【發明内容】 本發明係為一種倍壓電路結構，藉由在倍壓電路結構中提 供儲能電感，以在儲能電容之放電週期中以維持供應負載之穩 定電流，進而改善輸出電路之漣波效應。 本發明係為一種倍壓電路結構，藉由在電源轉換器之二次 侧耦接一倍壓電路，以降低電源轉換器中變壓器之繞線圈數 比，以達到縮小變壓器體積及降低寄生電容對電源轉換器之影 響。 為達上述功效，本發明提供一種倍壓電路結構，其係耦接 於一變壓器之二次侧，其包括：一第一二極體，其陽極係電性 連接於變壓器之二次側之一第一接點；一第二二極體，其陰極 係電性連接於第一接點；一第三二極體，其陰極係電性連接於 第一二極體之陰極，並且其陽極係電性連接於變壓器之二次側 之一第二接點；一第四二極體，其陽極係電性連接於第二二極 體之陽極，並且其陰極係電性連接於第二接點；一第一儲能單 元，其係串聯於第一二極體之陰極及一第一輸出端之間；一第 二儲能單元，其係串聯於第二二極體之陽極及一第二輸出端之 間；一第三儲能單元，其係電性連接於第一輸出端及第二接 點；以及一第四儲能單元，其係電性連接於第二輸出端及第二 接點。 藉由本發明的實施，至少可達到下列進步功效： 一、本發明具有較傳統倍壓電路中數量更多之儲能單元，藉由 一簡單電路結構之安排，可以儲存更多負載所需之能量， 進而降低輸出電路之漣波效應，藉此提供負載更穩定之能 201112594 量輸出。 二、 應用本發明倍壓電路結構之電源轉換器，可因倍壓電路結 構提升電壓之功能，而減少在設計上所需之變壓器繞線圈 數比，從而縮小了變壓器及電源轉換器之體積。 三、 由於在變壓器二次側可耦合本發明之倍壓電路結構，因此 可減少電源轉換器中變壓器的繞線圈數比，進而降低變壓 線圈中之寄生電容及雜散元件對電源轉換器之整體電路 所造成之振盪電壓，使得電源轉換器可以採用耐電壓較低 之開關元件而節省成本。 為了使任何熟習相關技藝者了解本發明之技術内容並據 以實施，且根據本說明書所揭露之内容、申請專利範圍及圖 式，任何熟習相關技藝者可輕易地理解本發明相關之目的及優 點，因此將在實施方式中詳細敘述本發明之詳細特徵以及優 點。 【實施方式】 第3圖係為本發明之一種倍壓電路結構示意圖。第4圖係 為本發明之一種倍壓電路結構於正半週導通之電路示意圖。第 5圖係為本發明之一種倍壓電路結構於正半週導通截止時之電 路示意圖。第6圖係為本發明之一種倍壓電路於負半週導通之 電路示意圖。第7圖係為本發明之一種倍壓電路於負半週導通 截止時之電路示意圖。第8圖係為本發明之一種倍壓電路之輸 出電壓波型示意圖。第9圖係為應用本發明倍壓電路結構之電 源轉換器電路示意圖。 201112594 如第3圖所示，本實施例為一種倍壓電路結構1，其係耦 接於一變壓器之二次側。變壓器之一次側具有一第一變壓線圈 N1以及在變壓器之二次側具有一第二變壓線圈N2，其中輸入 第一變壓線圈N1之交流電壓峰值係為Vnl，而第二變壓線圈 N2感應得到之交流電壓峰值係為Vn2。此外，第二變壓線圈 N2之兩端係分別連接至第一接點10及第二接點12。 倍壓電路結構1係包括一第一二極體D1、一第二二極體 D2、一第三二極體D3、一第四二極體D4、一第一儲能單元、 # 一第二儲能單元、一第三儲能單元及一第四儲能單元，並且倍 壓電路結構1具有一第一輸出端14及一第二輸出端16，可用 以與一負載電路連接。第一二極體D1，其陽極係電性連接於 變壓器二次側之第一接點10。第二二極體D2，其陰極係電性 連接於第一接點1〇。第三二極體D3，其陰極係電性連接於第 一二極體D1之陰極，並且其陽極係電性連接於變壓器之二次 侧之第二接點12。第四二極體D4，其陽極係電性連接於第二 二極體D2之陽極，並且其陰極係電性連接於第二接點12。 * 第一儲能單元可以是一第一電感L1，其係串聯於第一二 極體D1之陰極及第一輸出端14之間。第二儲能單元可以是一 第二電感L2,其係串聯於第二二極體D2之陽極及第二輸出端 16之間。第三儲能單元可以是一第一電容C1，其係電性連接 於第一輸出端14及第二接點12。第四儲能單元可以是一第二 電容C2，其係電性連接於第二輸出端16及第二接點12。 第4圖係為第二變壓線圈N2於正半週輸出時之倍壓電路 結構1之等效電路圖。此時第一二極體D1導通，於等效電路 201112594 中以係短路取代，而第二二極體D2、第三二極體D3及第四二 極體D4截止，於等效電路中係以開路取代。因此電流流經由 第一二極體D1、第一電感L1及第一電容C1所構成之迴路後， 可使第一電感L1及第一電容C1充電，並且使第一電容C1之 電壓充電至第二變壓線圈N2之交流電壓峰值Vn2。 第5圖係為第二變壓線圈N2於正半週截止時之倍壓電路 結構1之等效電路圖。此時第一二極體D卜第二二極體D2及 第四二極體D4處於截止狀態，於等效電路中係以開路取代， •第三二極體D3則處於導通狀態，其在等效電路中係以短路取 代。因此在第二變壓線圈N2之輸入電壓於正半週截止時，電 流流經由第一電感L1、第一電容C1及第三二極體D3所構成 之迴路，以提供第一電感L1釋放電能之路徑，進一步穩定了 倍壓電路結構1所提供之電源輸出。 第6圖係為第二變壓線圈N2於負半週輸出時之倍壓電路 結構1之等效電路圖。此時第一二極體D卜第三二極體D3及 第四二極體D4戴止，於等效電路中係以開路取代。第二二極 鲁體D2導通，於等效電路中係以短路取代。因此電流可流由經 第二二極體D2、第二電容C2及第二電感L2所構成之迴路， 而向第二電感L2及第二電容C2充電，並使第二電容C2之電 壓充電至第二變壓線圈N2之交流電壓之峰值Vn2。 第7圖係為第二變壓線圈N2於負半週截止時之倍壓電路 結構1之等效電路圖。此時第一二極體D1、第二二極體D2及 第三二極體D3處於截止狀態，於等效電路中係以開路取代。 第四二極體D4則處於導通狀態，在等效電路中以短路取代。 201112594 因此在第二變壓線圈N2之輸入電壓於負半週截止時，電流流 經由第二電容C2、第二電感L2及第四二極體D4所構成之迴 路，以提供第二電感L2釋放電能之路徑，進一步穩定了倍壓 電路結構1所提供之電源輸出。 第8圖係為倍壓電路結構1之輸出電壓示意圖。由於第一 電容C1及第二電容C2係串聯於第一輸出端14及第二輸出端 16之間，且第一電容C1及第二電容C2係分別於第二變壓線 圈N2之正半週及負半週輸出中充電至一電位Vn2，因此倍壓 •電路結構1具有一直流輸出電壓V〇等於2Vn2。此外，倍壓電 路結構1較傳統倍壓電路結構多了儲能電感，而且儲能電感（即 第一電感L1及第二電感L2)可在其自身處於非充能階段時釋 放能量，以使得倍壓電路結構1能有穩定之電流輸出與較低之 漣波電壓。 第9圖所示係為應用本實施例中倍壓電路結構1之電源轉 換器2之電路示意圖。電源轉換器2係為一直流對直流電源轉 換器，其係在變壓器之一次侧耦接了全橋式轉換器3，以將直 流電源轉變為一交流電，並且在其二次侧耦接本實施例之倍壓 電路結構1，以將感應得到之交流電源倍壓後轉換為直流電源 輸出。 相較於傳統之電源轉換器，電源轉換器2整合了倍壓電路 結構1以提升輸出電壓，因此在變壓器之設計上，可使用具有 較低的繞線圈數比之電壓器，即能達到額定之升壓輸出。而較 低的繞線圈數比除了可縮小變壓器體積並進一步縮小裝置尺 寸外，亦降低了寄生電容對電源轉換器2之影響。此外，雜散 201112594 元件透過變壓線圈對系統造成電路共振之影響變小，並且降低 了振盈電壓之強度’因此在電源轉換器2中可以使用耐壓較低 之開關元件，進而降低了電源轉換器2的成本。 惟上述各實施例係用以說明本發明之特點，其目的在使熟 習該技術者能瞭解本發明之内容並據以實施，而非限定本發明 之專利範圍，故凡其他未脫離本發明所揭示之精神而完成之等 致修飾或修改，仍應包含在以下所述之申請專利範圍中。 【圖式簡單說明】 第1圖係為習知之倍壓電路示意圖。 =2圖係為習知之倍壓電路輪出電壓波型示意圖。 3圖係為本發明之-種倍壓電路結構示意圖。 路Γ意係^本發明之—種倍壓1路結構於正㈣導通之等效電 ♦ 壓⑽敝半嫩後之等效 ==為本發明之-種倍*電路結構㈣丰週導通之等效電 第7圖係為本發明之一種倍壓雷 電路示意圖。 以路結構於負半週截止後之等效 8圖係為本發明之一種倍壓 圖。 Μ路結構之輪出電壓波型示意 塗 Ο y圖係為應用本發明倍壓雷敗 圖。 電路結構之電_換器電路示意 201112594 【主要元件符號說明】 1 ..................倍壓電路 10................第一接點 12................第二接點 14................第一輸出端 16................第二輸出端 2 ..................電源轉換器 3 ..................全橋式轉換器201112594 VI. Description of the Invention: [Technical Field] The present invention is a voltage doubling circuit structure, in particular, a voltage doubling circuit structure coupled to a secondary side of a transformer. [Prior Art] The function of the power converter is to convert an input power into a specific specification of the output power, such as the conversion between AC and DC or the output of the voltage rise and fall. A conventional conventional power converter includes a transformer that uses two sets of windings wound on the same core to transfer power from one circuit to another through electromagnetic induction. The ideal power converter does not consider the effects of stray components, so it is very efficient in operation and the energy can be completely transferred. However, no matter what kind of winding method is used, the actual power converter will contain stray components, such as the coil contains leakage inductance, the coupling capacitance between the primary side and the secondary side, and the parasitic capacitance between the secondary side coils. Wait. This leakage inductance produces unpredictable voltage spikes and delays the boost time, which in turn increases switching losses and vibration loss, and reduces the reliability and efficiency of the power converter. In a power converter, the output voltage is proportional to the ratio of the number of secondary windings of the transformer to the number of primary windings. Therefore, if the power supply is to be converted to a high voltage, the power converter will usually have a higher winding ratio. However, the leakage inductance and parasitic capacitance also increase with the increase of the number of winding coils, which makes the power converter more affected by the resonance of the stray components, which increases the voltage stress of the switching switch, and the power converter is easy to burn. 201112594 In order to solve this problem, the conventional power converter circuit design suppresses the step-up transformer by a vibration-absorbing circuit (Sunber) or a clamp circuit composed of a resistor, a capacitor, an inductor and a diode element. The oscillating voltage generated by the stray effect. However, due to the oscillating voltage generated by the stray effect, the damper circuit will generate a large amount of thermal effects and cause a voltage drop, which in turn will greatly reduce the conversion efficiency of the overall power converter. In order to cope with the above voltage drop, it is necessary to further increase the number of coils on the secondary side of the transformer to achieve the original output voltage. Therefore, although the slow-vibration circuit architecture can suppress the oscillating voltage generated by the spurious effect, there are still many disadvantages in application. The voltage doubler circuit is a circuit that increases the input voltage peak by a multiple and outputs it, mainly including two main components, a diode and a capacitor. It uses the switching characteristics of the diode to generate a rectifying function to control the current direction to charge the capacitor, and to generate a filtering function for the charging characteristic of the stored charge of the capacitor to obtain a DC voltage of a double or digital peak voltage. Figure 1 is a schematic diagram of a conventional voltage doubler circuit. Fig. 2 is a schematic diagram showing the output voltage waveform of the voltage doubler circuit of Fig. 1. The peak value of the induced voltage at both ends of the secondary coil ® N2 is Vn2, so that a voltage difference V 〇 is equal to 2Vn2 between the two output terminals of the voltage doubler circuit. Although the voltage doubler circuit of this architecture is simple, since only two capacitors C1 and C2 are used for energy storage, although the voltage output can reach a peak of 2Vn2, it still has a large chopping wave and its output current. It is also vulnerable to load and is unstable. 201112594 SUMMARY OF THE INVENTION The present invention is a voltage doubling circuit structure that provides a storage inductor in a voltage doubling circuit structure to maintain a stable current of a supply load during a discharge cycle of a storage capacitor, thereby improving output. The chopping effect of the circuit. The invention is a voltage doubler circuit structure, which is coupled with a voltage doubler circuit on the secondary side of the power converter to reduce the winding ratio of the transformer in the power converter to reduce the volume of the transformer and reduce the parasitic The effect of the capacitor on the power converter. To achieve the above-mentioned effects, the present invention provides a voltage doubling circuit structure coupled to a secondary side of a transformer, comprising: a first diode, the anode of which is electrically connected to the secondary side of the transformer a first contact; a second diode having a cathode electrically connected to the first contact; a third diode having a cathode electrically connected to the cathode of the first diode and having an anode Electrically connected to one of the second contacts of the secondary side of the transformer; a fourth diode, the anode of which is electrically connected to the anode of the second diode, and the cathode of which is electrically connected to the second connection a first energy storage unit connected in series between the cathode of the first diode and a first output; a second energy storage unit connected in series to the anode of the second diode and a first Between the two output terminals; a third energy storage unit electrically connected to the first output end and the second contact; and a fourth energy storage unit electrically connected to the second output end and the second contact. By the implementation of the present invention, at least the following advancements can be achieved: 1. The present invention has a larger number of energy storage units than conventional voltage doubler circuits, and can be stored with more load by a simple circuit structure arrangement. The energy, which in turn reduces the chopping effect of the output circuit, provides a more stable load for the 201112594 output. Second, the power converter of the double voltage circuit structure of the invention can reduce the voltage ratio of the transformer required by the design of the voltage doubler circuit structure, thereby reducing the number of transformer windings required in the design, thereby reducing the transformer and the power converter. volume. Third, since the voltage doubler circuit structure of the present invention can be coupled to the secondary side of the transformer, the number of windings of the transformer in the power converter can be reduced, thereby reducing parasitic capacitance and stray components in the power transformer. The oscillating voltage caused by the overall circuit allows the power converter to save cost by using switching components with low withstand voltage. In order to make those skilled in the art understand the technical content of the present invention and implement it, and according to the disclosure, the patent scope and the drawings, the related objects and advantages of the present invention can be easily understood by those skilled in the art. The detailed features and advantages of the present invention will be described in detail in the embodiments. [Embodiment] Fig. 3 is a schematic view showing the structure of a voltage doubler circuit of the present invention. Fig. 4 is a circuit diagram showing a structure of a voltage doubler circuit of the present invention which is turned on in the positive half cycle. Fig. 5 is a schematic diagram of a circuit of a voltage doubling circuit structure of the present invention when the positive half cycle is turned on and off. Figure 6 is a schematic diagram of a circuit for conducting a voltage doubler circuit in the negative half cycle of the present invention. Fig. 7 is a circuit diagram showing a voltage doubling circuit of the present invention turned off during a negative half cycle. Figure 8 is a schematic diagram showing the output voltage waveform of a voltage doubler circuit of the present invention. Figure 9 is a schematic diagram of a power converter circuit to which the voltage doubling circuit structure of the present invention is applied. 201112594 As shown in FIG. 3, this embodiment is a voltage doubler circuit structure 1 coupled to a secondary side of a transformer. The primary side of the transformer has a first transformer coil N1 and a second transformer coil N2 on the secondary side of the transformer, wherein the peak value of the AC voltage input to the first transformer coil N1 is Vnl, and the second transformer coil The peak value of the AC voltage obtained by N2 induction is Vn2. Further, both ends of the second transformer winding N2 are connected to the first contact 10 and the second contact 12, respectively. The voltage doubler circuit structure 1 includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first energy storage unit, and a first The second energy storage unit, a third energy storage unit and a fourth energy storage unit, and the voltage doubler circuit structure 1 has a first output end 14 and a second output end 16 for connecting to a load circuit. The first diode D1 has an anode electrically connected to the first contact 10 on the secondary side of the transformer. The second diode D2 has a cathode electrically connected to the first contact 1〇. The third diode D3 has a cathode electrically connected to the cathode of the first diode D1, and an anode electrically connected to the second junction 12 on the secondary side of the transformer. The fourth diode D4 has an anode electrically connected to the anode of the second diode D2 and a cathode electrically connected to the second junction 12. The first energy storage unit may be a first inductor L1 connected in series between the cathode of the first diode D1 and the first output terminal 14. The second energy storage unit may be a second inductor L2 connected in series between the anode of the second diode D2 and the second output terminal 16. The third energy storage unit may be a first capacitor C1 electrically connected to the first output terminal 14 and the second contact terminal 12. The fourth energy storage unit can be a second capacitor C2 electrically connected to the second output terminal 16 and the second contact point 12. Fig. 4 is an equivalent circuit diagram of the voltage multiplying circuit structure 1 when the second transformer winding N2 is outputted in the positive half cycle. At this time, the first diode D1 is turned on, and is replaced by a short circuit in the equivalent circuit 201112594, and the second diode D2, the third diode D3, and the fourth diode D4 are turned off, in the equivalent circuit. Replace with an open circuit. Therefore, after the current flows through the loop formed by the first diode D1, the first inductor L1, and the first capacitor C1, the first inductor L1 and the first capacitor C1 can be charged, and the voltage of the first capacitor C1 is charged to the first The alternating voltage peak value Vn2 of the two transformer winding N2. Fig. 5 is an equivalent circuit diagram of the voltage doubler circuit structure 1 when the second transformer winding N2 is turned off at the positive half cycle. At this time, the first diode D and the second diode D2 and the fourth diode D4 are in an off state, and are replaced by an open circuit in the equivalent circuit, and the third diode D3 is in an on state. The equivalent circuit is replaced by a short circuit. Therefore, when the input voltage of the second transformer N2 is turned off during the positive half cycle, the current flows through the loop formed by the first inductor L1, the first capacitor C1, and the third diode D3 to provide the first inductor L1 to release the electric energy. The path further stabilizes the power output provided by the voltage doubler circuit structure 1. Fig. 6 is an equivalent circuit diagram of the voltage doubler circuit structure 1 when the second transformer winding N2 is outputted in the negative half cycle. At this time, the first diode D and the third diode D3 and the fourth diode D4 are worn, and are replaced by an open circuit in the equivalent circuit. The second diode P2 is turned on, and is replaced by a short circuit in the equivalent circuit. Therefore, the current can flow through the loop formed by the second diode D2, the second capacitor C2, and the second inductor L2, and charge the second inductor L2 and the second capacitor C2, and charge the voltage of the second capacitor C2 to The peak value Vn2 of the alternating voltage of the second transformer winding N2. Fig. 7 is an equivalent circuit diagram of the voltage doubler circuit structure 1 when the second transformer winding N2 is turned off at the negative half cycle. At this time, the first diode D1, the second diode D2, and the third diode D3 are in an off state, and are replaced by an open circuit in the equivalent circuit. The fourth diode D4 is in an on state, and is replaced by a short circuit in the equivalent circuit. 201112594 Therefore, when the input voltage of the second transformer winding N2 is turned off at the negative half cycle, the current flows through the loop formed by the second capacitor C2, the second inductor L2 and the fourth diode D4 to provide the second inductor L2 release. The path of the electrical energy further stabilizes the power output provided by the voltage doubler circuit structure 1. Figure 8 is a schematic diagram of the output voltage of the voltage doubler circuit structure 1. The first capacitor C1 and the second capacitor C2 are connected in series between the first output terminal 14 and the second output terminal 16, and the first capacitor C1 and the second capacitor C2 are respectively in the positive half of the second transformer coil N2. And the negative half cycle output is charged to a potential Vn2, so the voltage doubler circuit structure 1 has a DC output voltage V 〇 equal to 2Vn2. In addition, the voltage doubler circuit structure 1 has more energy storage inductance than the conventional voltage doubler circuit structure, and the energy storage inductors (ie, the first inductor L1 and the second inductor L2) can release energy when they are in a non-charged phase. So that the voltage doubler circuit structure 1 can have a stable current output and a lower chopping voltage. Fig. 9 is a circuit diagram showing the application of the power converter 2 of the voltage multiplying circuit structure 1 of this embodiment. The power converter 2 is a DC-to-DC power converter, which is coupled to the full-bridge converter 3 on the primary side of the transformer to convert the DC power into an AC power, and is coupled to the second side of the present embodiment. For example, the voltage doubler circuit structure 1 converts the induced AC power source into a DC power output. Compared with the conventional power converter, the power converter 2 integrates the voltage doubler circuit structure 1 to increase the output voltage. Therefore, in the design of the transformer, a voltage device having a lower winding ratio can be used. Rated boost output. The lower winding ratio reduces the size of the transformer and further reduces the size of the device, which also reduces the effect of parasitic capacitance on the power converter 2. In addition, the stray 201112594 component through the transformer coil has less influence on the circuit resonance caused by the system, and reduces the strength of the vibration voltage. Therefore, the switching element with lower withstand voltage can be used in the power converter 2, thereby reducing the power supply. The cost of converter 2. The embodiments are described to illustrate the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the present invention and to implement the present invention without limiting the scope of the present invention. Modifications or modifications made by the spirit of the disclosure should still be included in the scope of the claims described below. [Simple description of the drawing] Fig. 1 is a schematic diagram of a conventional double voltage circuit. The =2 diagram is a schematic diagram of the voltage waveform of the voltage double circuit of the conventional voltage. 3 is a schematic diagram of the structure of the voltage doubling circuit of the present invention. Γ Γ ^ 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本The equivalent electric power 7 is a schematic diagram of a double voltage lightning circuit of the present invention. The equivalent 8 diagram of the road structure after the negative half cycle is a double pressure map of the present invention. The wheel-out voltage pattern of the Kushiro structure is shown in the figure 涂 y diagram is the application of the present invention. Circuit structure electric_reformer circuit indication 201112594 [Main component symbol description] 1 ..................double voltage circuit 10.......... ...the first contact 12................the second contact 14........................ Output terminal 16................second output terminal 2..................power converter 3 .... ..............Full bridge converter
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