Voltage-adjustable transformer
By designing clamps and locking mechanisms, the problem of loose connections caused by traditional transformer output voltage regulation is solved, achieving a stable connection between the cable and the transformer, and ensuring the stability of power transmission and system safety.
Patent Information
- Application Number
- CN202510358090.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2045-03-25
AI Technical Summary
Traditional transformers have a fixed output voltage, which makes it difficult to adapt to complex power demands, leading to equipment failure and reduced power quality. Furthermore, the adjustment process can easily cause the cable to become loose from the transformer, affecting the stability of power transmission.
Two clamp mechanisms were designed, namely clamp mechanism one and clamp mechanism two, which achieve a stable connection between the cable and the transformer through components such as threaded rotating rod, L-shaped plate and rubber pad; the locking mechanism ensures the stability and impact resistance of the connection through the clamp block and spring assembly.
This effectively prevents the cable and transformer connection from becoming loose, ensures stable power transmission, resists external shocks, and improves system reliability and safety.
Smart Images

Figure CN120221239B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of transformer technology, specifically to a transformer with adjustable output voltage. Background Technology
[0002] Traditional transformers have a fixed output voltage, making it difficult to meet complex power demands. Faced with diverse electrical equipment and operating conditions, they cannot precisely regulate voltage, easily leading to failures in precision equipment. As the power grid expands and loads fluctuate, they also struggle to adapt to voltage fluctuations, affecting system stability. The ever-changing power demands of industry and residents cannot be responded to in real time by traditional transformers, resulting in reduced power quality and equipment failures. Different application scenarios have varying voltage regulation requirements; therefore, transformers with adjustable output voltage are urgently needed.
[0003] Patent application CN202123182618.9 discloses a small adjustable output voltage transformer, including a fixing clip, a frame, and a winding. The top and bottom of the winding are provided with two sets of taps. The fixing clip is provided with two sets of clamping mechanisms. The clamping mechanism includes a second mounting plate and a first mounting plate. The first mounting plate has a through hole inside. The back of the second mounting plate is provided with a screw. One end of the screw passes through the through hole and extends to the outer surface of the first mounting plate. The screw is threaded with a nut.
[0004] However, this patent also has the following shortcomings: after adjusting the output voltage, the adjustment action of the transformer can easily cause the cable to become loose from the transformer, which will further increase the risk of loosening; if the connection becomes loose under external impact (such as strong wind, mechanical collision, etc.), the power transmission will be severely affected, resulting in voltage instability, power outage, etc., reducing the reliability of power supply, damaging equipment that relies on stable power, and affecting the operation of production and life. Effective improvement measures are urgently needed. In view of this situation, a transformer with adjustable output voltage is proposed. Summary of the Invention
[0005] The purpose of this invention is to provide a transformer with adjustable output voltage to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a transformer with adjustable output voltage, comprising a transformer body, an insulating ceramic fixedly connected to the upper surface of the transformer body, a connector disposed inside the insulating ceramic, a first wire clamp mechanism and a second wire clamp mechanism fixedly connected to the upper surface of the transformer body, a locking mechanism fixedly connected to the outer surface of the first wire clamp mechanism, and the first wire clamp mechanism comprising:
[0007] A threaded column has an L-shaped plate snapped onto its outer surface, a bolt cap threaded onto its outer surface, a threaded rotating rod threaded onto the inside of the L-shaped plate, a slotted block rotatably connected to the outer surface of the threaded rotating rod, a rubber pad fixedly connected to the outer surface of the slotted block, and a telescopic sleeve fixedly connected to the outer surface of the L-shaped plate for protecting the threaded rotating rod.
[0008] According to the above technical solution, the wire clamp mechanism further includes a first locking block, which is fixedly connected to the upper surface of the locking slot block. An arc frame is locked inside the L-shaped plate, and a rubber strip is fixedly connected to the lower surface of the arc frame. A sliding locking slot frame is slidably connected inside the arc frame, and a drainage groove is locked inside the sliding locking slot frame. The sliding locking slot frame is used to limit the locking slot block.
[0009] According to the above technical solution, the lower surface of the threaded column is fixedly connected to the upper surface of the transformer body, the outer surface of the telescopic sleeve is fixedly connected to the outer surface of the L-shaped plate, the first locking block is engaged with the sliding slot frame, the lower surface of the rubber belt is fixedly connected to the inner wall of the L-shaped plate, and the drainage groove is used to drain water from the slot and locking block.
[0010] According to the above technical solution, the second clamp mechanism includes a U-shaped plate, which is fixedly connected to the transformer body via a threaded post and a bolt cap. A connecting rod is fixedly connected to the upper surface of the U-shaped plate, a first spring is fixedly connected to the lower surface of the connecting rod, a through-hole column is fixedly connected to the lower surface of the first spring, a second spring is fixedly connected to the lower surface of the through-hole column, and a telescopic sleeve is fixedly connected to the lower surface of the connecting rod. The first spring and the second spring are used to support the through-hole column.
[0011] According to the above technical solution, the second wire clamp mechanism further includes an arc panel, which is fixedly connected to the outer surface of the through-hole column. A first wire clamp is fixedly connected to the outer surface of the arc panel, and a second rubber pad is fixedly connected to the outer surface of the first wire clamp. A bolt group is threadedly connected to the inside of the first wire clamp, and the first wire clamp is used to clamp the cable.
[0012] According to the above technical solution, the lower surface of the second spring is fixedly connected to the upper surface of the U-shaped plate, the lower surface of the second telescopic sleeve is fixedly connected to the upper surface of the U-shaped plate, two first clamps are symmetrically arranged, and the bolt group is used to fix the first clamps.
[0013] According to the above technical solution, the locking mechanism includes a second locking block, the outer surface of the second locking block is fixedly connected to the outer surface of the L-shaped plate, a third locking block is fixedly connected to the outer surface of the U-shaped plate, the second and third locking blocks are provided with a first locking groove inside, a connecting frame one and a connecting frame two are locked on the outer surface of the first locking block, a second locking plate is locked inside the second locking block, a first locking plate is locked inside the third locking block, a U-shaped frame one is locked inside the connecting frame one, and a U-shaped frame two is locked inside the connecting frame two. The first and second locking plates are used to fix the connecting frame one and the connecting frame two.
[0014] According to the above technical solution, the second connecting frame is engaged with the third locking block, the lower surface of the first locking plate is in contact with the upper surfaces of the first connecting frame and the second connecting frame, and the lower surface of the second locking plate is in contact with the upper surfaces of the first connecting frame and the second connecting frame. The first connecting frame and the second connecting frame are used to fix the L-shaped plate and the U-shaped plate.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] 1. This adjustable output voltage transformer, by setting a clamp mechanism, can be conveniently connected to the connection point of the cable and the transformer output voltage adjustment. When the system adjusts the output voltage, the clamp mechanism can respond quickly and apply a uniform and strong clamping force to the connection point, effectively avoiding vibration and displacement caused by the adjustment action, ensuring that the cable and the transformer always maintain a stable connection and guaranteeing power transmission.
[0017] 2. This adjustable output voltage transformer, with its wire clamp mechanism, can be precisely adapted to the actual position of the cable under different connection methods. It uses high-strength fastening components to further reinforce the cable connection position, ensuring that the cable is firmly fixed and will not loosen, thus guaranteeing stable and safe power transmission.
[0018] 3. This adjustable output voltage transformer, through the setting of the second clamp mechanism, can firmly clamp the cable while being fixed to the transformer with its ingenious installation structure. When the cable is subjected to external impacts, such as strong winds or accidental collisions, the impact energy is effectively absorbed and dispersed, preventing the impact force from acting directly on the connection between the cable and the transformer. It protects the transformer output position in all directions and ensures the continuous and stable power transmission.
[0019] 4. This adjustable output voltage transformer, through the setting of a locking mechanism, can quickly lock the wire clamp mechanism one and the wire clamp mechanism two, so that the two are tightly connected and maintain overall stability. It is also equipped with special snap-fit parts, which can be seamlessly connected with other similar locking mechanisms to realize the interlocking locking of all related components, greatly improving the reliability and safety of the system. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;
[0021] Figure 2 This is an enlarged schematic diagram of the main structure of the present invention;
[0022] Figure 3 This is a structural cross-sectional view of the wire clamp mechanism of the present invention;
[0023] Figure 4 For Figure 3 Enlarged cross-sectional view of the structure at point A in the middle;
[0024] Figure 5 This is an exploded view of the structure of the wire clamp mechanism of the present invention;
[0025] Figure 6 This is a cross-sectional view of the structure of the second wire clamp mechanism of the present invention;
[0026] Figure 7 This is a partial structural schematic diagram of the wire clamp mechanism II of the present invention;
[0027] Figure 8 This is a schematic diagram of the locking mechanism of the present invention.
[0028] In the diagram: 1. Transformer body;
[0029] 2. Insulating ceramics;
[0030] 3. Wire clamp mechanism one;
[0031] 301. Threaded post; 302. Bolt cap; 303. L-shaped plate; 304. Threaded rotating rod; 305. Slotted block; 306. Rubber pad one; 307. First locking block; 308. Arc-shaped frame; 309. Rubber belt; 310. Sliding slot frame; 311. Drainage groove; 312. Telescopic sleeve one;
[0032] 4. Connector;
[0033] 5. Wire clamp mechanism two;
[0034] 501. U-shaped plate; 502. Connecting rod; 503. First spring; 504. Through-hole column; 505. Second spring; 506. Arc panel; 507. First wire clamp; 508. Rubber pad II; 509. Bolt assembly; 510. Telescopic sleeve II;
[0035] 6. Locking mechanism;
[0036] 601. Second card block; 602. Third card block; 603. First card slot; 604. Connecting frame one; 605. Connecting frame two; 606. First card plate; 607. Second card plate; 608. U-shaped frame one; 609. U-shaped frame two. Detailed Implementation
[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0038] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.
[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0040] Example 1: See Figures 1-5 The present invention provides a technical solution: a transformer with adjustable output voltage, comprising a transformer body 1, an insulating ceramic 2 fixedly connected to the upper surface of the transformer body 1, a connector 4 disposed inside the insulating ceramic 2, a wire clamp mechanism 3 and a wire clamp mechanism 5 fixedly connected to the upper surface of the transformer body 1, a locking mechanism 6 fixedly connected to the outer surface of the wire clamp mechanism 3, and the wire clamp mechanism 3 comprising:
[0041] A threaded post 301 has an L-shaped plate 303 snapped onto its outer surface. A bolt cap 302 is threaded onto the outer surface of the threaded post 301. A threaded rotating rod 304 is threaded onto the inner surface of the L-shaped plate 303. A slotted block 305 is rotatably connected to the outer surface of the threaded rotating rod 304. A rubber pad 306 is fixedly connected to the outer surface of the slotted block 305. A telescopic sleeve 312 is fixedly connected to the outer surface of the L-shaped plate 303. The telescopic sleeve 312 is used to protect the threaded rotating rod 304.
[0042] The wire clamp mechanism 3 also includes a first locking block 307, which is fixedly connected to the upper surface of the locking slot block 305. An arc-shaped frame 308 is locked inside the L-shaped plate 303. A rubber strip 309 is fixedly connected to the lower surface of the arc-shaped frame 308. A sliding locking slot frame 310 is slidably connected inside the arc-shaped frame 308. A drainage groove 311 is locked inside the sliding locking slot frame 310. The sliding locking slot frame 310 is used to limit the locking slot block 305.
[0043] The lower surface of the threaded column 301 is fixedly connected to the upper surface of the transformer body 1, the outer surface of the telescopic sleeve 312 is fixedly connected to the outer surface of the L-shaped plate 303, the first locking block 307 is engaged with the sliding slot frame 310, the lower surface of the rubber belt 309 is fixedly connected to the inner wall of the L-shaped plate 303, and the drainage groove 311 is used to drain water from the slot block 305. After the outer surface of the cable is fixed, the connection between the cable and the connector 4 will not be taut, so that it will not directly bear the impact. The drainage groove 311 drains the water inside the sliding slot frame 310 and the first locking block 307, so that it will not affect the cable. The sliding connection between the sliding slot frame 310 and the arc frame 308 adapts to different clamping positions of the slot block 305, ensuring the clamping of the slot block 305.
[0044] The working principle of this embodiment is as follows: When using the adjustable output voltage transformer, the existing transformer adjusts the output voltage by adjusting the connection position with connector 4. After adjustment, the threaded rotating rod 304 rotates, and the L-shaped plate 303 moves the threaded rotating rod 304 inward, pushing the slot block 305 to move, so that the rubber pad 306 contacts the outer surface of the cable. The cable is clamped by the symmetrically arranged slot blocks 305 and the rubber pad 306. At this time, the rubber belt 309 pulls the arc frame 308 downward, causing... The sliding slot bracket 310 moves downward, engaging with the first locking block 307, thus fixing the slot locking block 305 vertically to prevent it from moving. The horizontal direction is then fixed via the threaded rotating rod 304. After fixing, the connection position between the cable and the connector 4 is secured, ensuring a stable cable connection after adjustment. Furthermore, by adjusting the movement distance of the two threaded rotating rods 304, the clamping position of the rubber pad 306 on the cable is adjusted, adapting to the cable connection direction and ensuring a stable cable connection.
[0045] Example 2: Please refer to Figures 6-8 Based on Embodiment 1, the present invention provides a technical solution: the wire clamp mechanism 2 5 includes a U-shaped plate 501, which is fixedly connected to the transformer body 1 via a threaded post 301 and a bolt cap 302. A connecting rod 502 is fixedly connected to the upper surface of the U-shaped plate 501, a first spring 503 is fixedly connected to the lower surface of the connecting rod 502, a through-hole post 504 is fixedly connected to the lower surface of the first spring 503, a second spring 505 is fixedly connected to the lower surface of the through-hole post 504, and a telescopic sleeve 2 510 is fixedly connected to the lower surface of the connecting rod 502. The first spring 503 and the second spring 505 are used to support the through-hole post 504.
[0046] The second wire clamp mechanism 5 also includes an arc panel 506, which is fixedly connected to the outer surface of the through-hole column 504. A first wire clamp 507 is fixedly connected to the outer surface of the arc panel 506. A second rubber pad 508 is fixedly connected to the outer surface of the first wire clamp 507. A bolt group 509 is threadedly connected inside the first wire clamp 507. The first wire clamp 507 is used to clamp the cable.
[0047] The lower surface of the second spring 505 is fixedly connected to the upper surface of the U-shaped plate 501, and the lower surface of the telescopic sleeve 510 is fixedly connected to the upper surface of the U-shaped plate 501. Two first wire clamps 507 are symmetrically arranged. The bolt group 509 is used to fix the first wire clamps 507. When fixing the U-shaped plate 501, the U-shaped plate 501 is fixed by the threaded post 301 and the bolt cap 302, so that it can be disassembled to replace the insulating ceramic 2. When the impact is transmitted, the arc surface of the arc panel 506 can fully transmit the impact to the through hole post 504, so that the arc panel 506 will not cause abnormal displacement of the first wire clamp 507 during the impact, ensuring that the fixing of the cable is not affected.
[0048] The locking mechanism 6 includes a second locking block 601, the outer surface of which is fixedly connected to the outer surface of the L-shaped plate 303, and a third locking block 602 fixedly connected to the outer surface of the U-shaped plate 501. The second locking block 601 and the third locking block 602 are provided with a first locking groove 603. The outer surface of the first locking block 307 is fitted with a connecting frame 1 604 and a connecting frame 2 605. The second locking block 601 is fitted with a second locking plate 607. The third locking block 602 is fitted with a first locking plate 606. The connecting frame 1 604 is fitted with a U-shaped frame 1 608. The connecting frame 2 605 is fitted with a U-shaped frame 2 609. The first locking plate 606 and the second locking plate 607 are used to fix the connecting frame 1 604 and the connecting frame 2 605.
[0049] Connecting bracket 2 605 is engaged with third locking block 602. The lower surface of first locking plate 606 is in contact with the upper surface of connecting bracket 1 604 and connecting bracket 2 605. The lower surface of second locking plate 607 is in contact with the upper surface of connecting bracket 1 604 and connecting bracket 2 605. Connecting bracket 1 604 and connecting bracket 2 605 are used to fix L-shaped plate 303 and U-shaped plate 501. The contact surfaces of first locking plate 606, second locking plate 607 and connecting bracket 1 604 and connecting bracket 2 605 are magnetic surfaces, so that when connecting bracket 1 604 and connecting bracket 2 605 are engaged, they will not come loose when impacted.
[0050] The working principle of this embodiment is as follows: When using the adjustable output voltage transformer, after clamping, the cable is clamped by the first wire clamp 507 and the symmetrically arranged first wire clamp 507, and the cable is assisted by the second rubber pad 508 to prevent it from loosening. The first wire clamp 507 is fixed by the bolt group 509. At this time, the U-shaped plate is fixed by the bolt cap 302. At the same time, the first connecting frame 604 and the second connecting frame 605 are connected on the outer surface of the second locking block 601 and the third locking block 602. At this time, the first locking plate 606 and the second locking plate 607 are engaged inside the first locking groove 603, so that the connecting frame The L-shaped plate 303 and the U-shaped plate 501 are tightly fixed together, ensuring that the L-shaped plate 303 and the U-shaped plate 501 are perpendicular in the vertical direction. When impacted, the impact of the cable is transmitted to the through-hole column 504 through the arc panel 506, and the impact is absorbed by the first spring 503 and the second spring 505. The locking mechanism 6 on the outer surface of each insulating ceramic 2 is engaged by the U-shaped frame 608 and the U-shaped frame 609, so that when impacted, the connection head 4 will not be damaged by the interlocking lock, thus ensuring the service life of the connection head 4 and the service life of the transformer body 1.
[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A transformer with adjustable output voltage, comprising a transformer body (1), wherein an insulating ceramic (2) is fixedly connected to the upper surface of the transformer body (1), a connector (4) is provided inside the insulating ceramic (2), a wire clamp mechanism one (3) and a wire clamp mechanism two (5) are fixedly connected to the upper surface of the transformer body (1), and a locking mechanism (6) is fixedly connected to the outer surface of the wire clamp mechanism one (3), characterized in that, The wire clamp mechanism one (3) comprises: The outer surface of the threaded column (301) is clamped with an L-shaped plate (303), the outer surface of the threaded column (301) is threadedly connected with a bolt cap (302), the inside of the L-shaped plate (303) is threadedly connected with a threaded rotating rod (304), the outer surface of the threaded rotating rod (304) is rotatably connected with a clamping groove clamping block (305), the outer surface of the clamping groove clamping block (305) is fixedly connected with a rubber pad one (306), and the outer surface of the L-shaped plate (303) is fixedly connected with an elastic sleeve one (312) for protecting the threaded rotating rod (304); The wire clamp mechanism one (3) further comprises a first clamping block (307) fixedly connected with the upper surface of the clamping groove clamping block (305), the inside of the L-shaped plate (303) is clamped with an arc-shaped frame (308), the lower surface of the arc-shaped frame (308) is fixedly connected with a rubber belt (309), and the inside of the arc-shaped frame (308) is slidably connected with a sliding clamping groove frame (310), the inside of the sliding clamping groove frame (310) is clamped with a drainage groove (311), and the sliding clamping groove frame (310) is used for limiting the clamping groove clamping block (305); The wire clamp mechanism two (5) comprises a U-shaped plate (501) fixedly connected with the transformer main body (1) through a threaded column (301) and a bolt cap (302), the upper surface of the U-shaped plate (501) is fixedly connected with a connecting rod (502), the lower surface of the connecting rod (502) is fixedly connected with a first spring (503), the lower surface of the first spring (503) is fixedly connected with a through-hole stand column (504), the lower surface of the through-hole stand column (504) is fixedly connected with a second spring (505), the lower surface of the connecting rod (502) is fixedly connected with an elastic sleeve two (510), and the first spring (503) and the second spring (505) are used for supporting the through-hole stand column (504).
2. The adjustable output voltage transformer of claim 1, wherein: The lower surface of the threaded column (301) is fixedly connected with the upper surface of the transformer main body (1), the outer surface of the elastic sleeve one (312) is fixedly connected with the outer surface of the L-shaped plate (303), the first clamping block (307) is clamped with the sliding clamping groove frame (310), the lower surface of the rubber belt (309) is fixedly connected with the inner wall of the L-shaped plate (303), and the drainage groove (311) is used for draining the clamping groove clamping block (305).
3. The adjustable output voltage transformer of claim 2, wherein: The wire clamp mechanism two (5) further comprises an arc surface plate (506) fixedly connected with the outer surface of the through-hole stand column (504), the outer surface of the arc surface plate (506) is fixedly connected with a first wire clamp (507), the outer surface of the first wire clamp (507) is fixedly connected with a rubber pad two (508), the inside of the first wire clamp (507) is threadedly connected with a bolt set (509), and the first wire clamp (507) is used for clamping the cable.
4. The adjustable output voltage transformer of claim 3, wherein: The lower surface of the second spring (505) is fixedly connected with the upper surface of the U-shaped plate (501), the lower surface of the telescopic sleeve two (510) is fixedly connected with the upper surface of the U-shaped plate (501), the first wire clamp (507) is symmetrically provided with two, and the bolt group (509) is used for fixing the first wire clamp (507).
5. The adjustable output voltage transformer of claim 3, wherein: The locking mechanism (6) comprises a second clamping block (601), the outer surface of the second clamping block (601) is fixedly connected with the outer surface of the L-shaped plate (303), the outer surface of the U-shaped plate (501) is fixedly connected with a third clamping block (602), the inside of the second clamping block (601) and the third clamping block (602) is clamped with a first clamping groove (603), the outer surface of the first clamping block (307) is clamped with a connecting frame one (604) and a connecting frame two (605), the inside of the second clamping block (601) is clamped with a second clamping plate (607), the inside of the third clamping block (602) is clamped with a first clamping plate (606), the inside of the connecting frame one (604) is clamped with a U-shaped frame one (608), the inside of the connecting frame two (605) is clamped with a U-shaped frame two (609), and the first clamping plate (606) and the second clamping plate (607) are used for fixing the connecting frame one (604) and the connecting frame two (605).
6. The adjustable output voltage transformer of claim 5, wherein: The connecting frame two (605) is clamped with the third clamping block (602), the lower surface of the first clamping plate (606) is in contact with the upper surfaces of the connecting frame one (604) and the connecting frame two (605), the lower surface of the second clamping plate (607) is in contact with the upper surfaces of the connecting frame one (604) and the connecting frame two (605), and the connecting frame one (604) and the connecting frame two (605) are used for fixing the L-shaped plate (303) and the U-shaped plate (501).
Citation Information
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Small transformer capable of adjusting output voltage
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