TWM646625U - Transformer and transformer system - Google Patents

Abstract

This case is about a transformer and a transformer system. The magnetic core includes a first flange, a second flange and a center column. The first flange and the second flange are located at both ends of the center column. The first wire includes a first end and a third The two ends are respectively provided on the first flange and the second flange. The second conductor includes a third end and a fourth end, which are respectively provided on the first flange and the second flange. The third conductor includes a fifth end. and the sixth end, which are respectively provided on the first flange and the second flange. The fourth conductor includes a seventh end and an eighth end, which are respectively provided on the first flange and the second flange. The first conductor and the second The second conductor, the third conductor and the fourth conductor are wound on the central column. The first conductor and the second conductor are wound on the central column in a way that they are twisted around each other. The third conductor and the fourth conductor are twisted around each other or in parallel. Wrap around the center pillar.

Description

Transformers and transformer systems

This case relates to a transformer and a transformer system, especially a transformer and a transformer system with multiple sets of conductors.

Traditional transformers include multiple sets of wires, such as primary side windings and secondary side windings, and the multiple sets of windings are wound directly on the magnetic core in a parallel winding manner. This makes the windings of traditional transformers loosely wound, causing the primary side windings and The coupling between the secondary side windings is low, which results in a lower upper frequency limit of the transformer, that is, a smaller bandwidth of the transformer. In addition, as the number of turns of the transformer wire increases, the transformer will have a resonance point within the operating frequency range, for example, between 1MHz and 500MHz. This resonance point will increase the power spectral density of the transformer. PSD), which in turn causes the noise of the transformer to easily exceed the upper limit of the test data, making the noise of the transformer easier to measure, resulting in an increase in the overall noise ratio of the transformer. In addition, due to the loose winding method of traditional transformers, the attenuation of the transformer outside the operating frequency range is low, for example, less than 3dB, which causes jitter to easily occur on the frequency waveform, which in turn affects the test results of the transformer and makes the transformer The overall characteristics are poor.

Therefore, how to develop a transformer and transformer system that overcomes the above shortcomings is currently an urgent need.

The purpose of this case is to provide a transformer and a transformer system. The first conductor and the second conductor are wound on the center column in a mutually twisted manner, and the third conductor and the fourth conductor are twisted together or in parallel. Wound on the center column, the wires of the transformer in this case are wound on the center column in a relatively tight manner. According to the above wire winding method, the upper frequency limit of the transformer in this case is increased, that is, the bandwidth is relatively increased. In addition, the transformer in this case does not have a resonance point, so the attenuation of the transformer in this case can reach 14dB, which is much greater than the attenuation of a traditional transformer. This further makes the frequency waveform of transformer 1 less likely to jitter at high frequencies, so the overall characteristics Better. And because the power spectral density is low and lower than the upper limit of the test data, the noise of the transformer in this case is difficult to measure, thereby reducing the overall noise ratio of the transformer.

To achieve the above object, one embodiment of the present invention is a transformer including a magnetic core, a first conductor, a second conductor, a third conductor and a fourth conductor. The magnetic core includes a first flange, a second flange and a center column. The first flange and the second flange are respectively located at both ends of the center column. The first wire includes a first end and a second end, the first end is provided on the first flange, the second end is provided on the second flange, and the first wire is wound around the center column. The second wire includes a third end and a fourth end, the third end is provided on the first flange, the fourth end is provided on the second flange, and the second wire is wound around the center column. The third wire includes a fifth end and a sixth end, the fifth end is provided on the first flange, the sixth end is provided on the second flange, and the third wire is wound around the center column. The fourth wire includes a seventh end and an eighth end. The seventh end is located on the first flange, and the eighth end is located on the second flange. The fourth wire is wound around the center column. The first conductor and the second conductor are twisted around each other to form a first twisted wire and wound around the center column. The third conductor and the fourth conductor are twisted around each other to form a second twisted wire and wound around the central pillar. On the center column, the first twisted wire and the second twisted wire are not twisted around each other.

To achieve the above object, another embodiment of the present invention is a transformer including a magnetic core, a first conductor, a second conductor, a third conductor and a fourth conductor. The magnetic core includes the first flange, the second flange and the center column. The first flange and the second flange are respectively located at both ends of the center column. The first wire includes a first end and a second end, the first end is provided on the first flange, the second end is provided on the second flange, and the first wire is wound around the center column. The second wire includes a third end and a fourth end, the third end is provided on the first flange, the fourth end is provided on the second flange, and the second wire is wound around the center column. The third wire includes a fifth end and a sixth end, the fifth end is provided on the first flange, the sixth end is provided on the second flange, and the third wire is wound around the center column. The fourth wire includes a seventh end and an eighth end. The seventh end is located on the first flange, and the eighth end is located on the second flange. The fourth wire is wound around the center column. The first conductor and the second conductor are wound around the center column in a twisted manner, and the third conductor and the fourth conductor are wound around the center column in a parallel manner.

To achieve the above object, another embodiment of the present invention is a transformer system, including the aforementioned transformer and a circuit board. The transformer is installed on the circuit board, and the circuit board has circuits, two ends of which are electrically connected to the first conductor and the third conductor respectively.

1, 1a, 1b, 1c, 1d: Transformer

2: Magnetic core

21:First flange

211: First electrode

212: Second electrode

213:Third electrode

214:Fourth electrode

22:Second flange

221:Fifth electrode

222:Sixth electrode

223:Seventh electrode

224:The eighth electrode

23: middle pillar

3: First wire

31:First end

32:Second end

4:Second wire

41:Third end

42:Fourth end

5:Third wire

51:Fifth end

52:Sixth end

6:Fourth wire

61:Seventh end

62:Eighth end

7:Circuit board

7a: Surface

71: Line

8. 8a: Transformer system

d1, d2: attenuation

Figure 1 is a schematic structural diagram of the transformer according to the first embodiment of the present invention.

Figure 2 is a schematic diagram of how some wires of the transformer shown in Figure 1 are wound.

Figure 3 is a schematic cross-sectional structural diagram of the transformer shown in Figure 1.

Figures 4 and 5 show the frequency decibel waveforms of the transformer in this case and the traditional transformer at different frequencies respectively.

Figures 6A and 6B are respectively the test waveform diagram of the traditional transformer at high frequency and the test waveform diagram of the transformer in this case at high frequency.

Figures 7A and 7B are respectively the waveform diagram of the power spectral density of the traditional transformer and the test waveform diagram of the power spectral density of the transformer in this case.

Figure 8 is a schematic diagram of the winding method of some wires of the transformer according to the second embodiment of the present invention.

Figure 9 is a schematic diagram of the winding method of some wires of the transformer according to the third embodiment of the present invention.

Figure 10 is a schematic diagram of the winding method of some wires of the transformer according to the fourth embodiment of the present invention.

Figure 11 is a schematic diagram of the winding method of some conductors of the transformer according to the fifth embodiment of the present invention.

Figure 12 is a schematic structural diagram of the transformer system in the first embodiment of this case.

Figure 13 is a schematic structural diagram of the transformer system of the second embodiment of this case.

Some typical embodiments embodying the features and advantages of this case will be described in detail in the following description. It should be understood that this case can have various changes in different aspects without departing from the scope of this case, and the descriptions and drawings are essentially for illustrative purposes and are not used to limit this case.

Please refer to Figures 1 to 3. Figure 1 is a schematic structural diagram of the transformer in the first embodiment of this case. Figure 2 is a schematic diagram of the winding method of some wires of the transformer shown in Figure 1. Figure 3 is a schematic diagram of the winding method of some wires of the transformer shown in Figure 1. Figure 1 shows the schematic cross-sectional structure of the transformer. As shown in FIG. 1 , the transformer 1 of this embodiment includes a magnetic core 2 , a first conductor 3 , a second conductor 4 , a third conductor 5 and a fourth conductor 6 . The magnetic core 2 includes a first flange 21 , a second flange 22 and a center column 23 . The first flange 21 , the second flange 22 and the center column 23 are integrally formed structures, and the first flange 21 and the center column 23 are integrally formed. The two flanges 22 are respectively located at two ends of the center column 23 and connected to both ends of the center column 23 . The first flange 21 includes a first electrode 211, a second electrode 212, a third electrode 213 and a fourth electrode 214. The first electrode 211, the second electrode 212, the third electrode 213 and the fourth electrode 214 are arranged in sequence. That is to say, the first electrode 211 and the fourth electrode 214 are outer electrodes, and the second electrode 212 and the third electrode 213 are located on the first electrode. 211 and the fourth electrode 214 are inner electrodes. The second flange 22 includes a fifth electrode 221, a sixth electrode 222, a seventh electrode 223 and an eighth electrode 224. The fifth electrode 221, the sixth electrode 222, the seventh electrode 223 and the eighth electrode 224 are arranged in sequence. That is to say, the fifth electrode 221 and the eighth electrode 224 are outer electrodes, and the sixth electrode 222 and the seventh electrode 223 are located between the fifth electrode 221 and the eighth electrode 224 and are inner electrodes, wherein the fifth electrode 221 is on the second The arrangement position on the flange 22 corresponds to the arrangement position of the fourth electrode 214 on the first flange 21 , and the arrangement position of the sixth electrode 222 on the second flange 22 corresponds to the arrangement position of the third electrode 213 on the first flange 21 The arrangement position of the seventh electrode 223 on the second flange 22 corresponds to the arrangement position of the second electrode 212 on the first flange 21 , and the arrangement position of the eighth electrode 224 on the second flange 22 . Corresponds to the position of the first electrode 211 on the first flange 21 .

In order to simplify the illustration, Figure 2 only shows the four electrodes on the first flange 21 and the partial structure of each wire, but does not show the four electrodes on the second flange 22 . As shown in Figures 2 and 1, the first wire 3 includes a first end 31 and a second end 32. The first end 31 of the first wire 3 is provided on the first electrode 211 of the first flange 21. The second end 32 of the wire 3 is provided on the eighth electrode 224 of the second flange 22 , wherein the first wire 3 is wound around the center column 23 . The second wire 4 includes a third end 41 and a fourth end 42. The third end 41 of the second wire 4 is provided on the third electrode 213 of the first flange 21. The fourth end 42 of the second wire 4 is provided on the second On the sixth electrode 222 of the flange 22 , the second wire 4 is wound around the center column 23 . The third wire 5 and the first wire 3 constitute the primary side winding of the transformer 1 , and the third wire 5 includes a fifth end 51 and a sixth end 52 . The fifth end 51 of the third wire 5 is located on the first flange 21 The second electrode 212 and the sixth end 52 of the third wire 5 are provided on the seventh electrode 223 of the second flange 22 , wherein the third wire 5 is wound around the center column 23 . The fourth wire 6 and the second wire 4 constitute the secondary side winding of the transformer 1 , and the fourth wire 6 includes a seventh end 61 and an eighth end 62 , and the seventh end 61 of the fourth wire 6 is provided on the first flange 21 The fourth electrode 214 has the eighth end 62 of the fourth wire 6 disposed on the fifth electrode 221 of the second flange 22 , wherein the fourth wire 6 is wound around the center column 23 . According to the above wire connection relationship, it can be seen that the variation of this embodiment The first end 31 of the first conductor 3 of the voltage regulator 1, the fifth end 51 of the third conductor 5, the third end 41 of the second conductor 4 and the seventh end 61 of the fourth conductor 6 are sequentially arranged in the first method. on the blue 21, and the second end 32 of the first conductor 3, the sixth end 52 of the third conductor 5, the fourth end 42 of the second conductor 4 and the eighth end 62 of the fourth conductor 6 are sequentially arranged on the second On flange 22. In this embodiment, the first conductor 3 and the second conductor 4 are twisted around each other to form a first twisted conductor and wound around the center column 23 to form an outer conductor, and the third conductor 5 and the fourth conductor 6 The second twisted wire is formed by twisting each other and wound on the center column 23 to form the inner conductor. As shown in Figure 3, the inner conductor composed of the third conductor 5 and the fourth conductor 6 is located in the middle. between the pillar 23 and the outer conductor composed of the first conductor 3 and the second conductor 4. In this embodiment, the winding direction of the first conductor 3 and the second conductor 4 on the center column 23 is the same as the winding direction of the third conductor 5 and the fourth conductor 6 on the center column 23 . In addition, the first twisted wire and the second twisted wire of the transformer 1 in this case are preferably not twisted with each other. In this way, the attenuation d2 of the transformer 1 in this case can be effectively reduced, and the frequency waveform is less likely to jitter at high frequencies. .

Please refer to Figures 4 and 5, which are respectively the frequency decibel waveform diagrams of the transformer in this case and the traditional transformer at different frequencies. As shown in Figure 4, at a set decibel, such as -3dB, the frequency cut off point (cut off point) corresponding to the traditional transformer is approximately 1.15GHz, while the frequency cut off point (cut off point) corresponding to the transformer 1 in this case is approximately is 1.9GHz, and the frequency cut-off point of the transformer can correspond to the upper frequency limit of the transformer. It can be clearly seen from Figure 4 that the upper frequency limit of transformer 1 in this case is greater than the upper frequency limit of the traditional transformer. Since the overall bandwidth of the transformer is about The twice frequency upper limit means that the overall bandwidth of the transformer 1 in this case is also greater than the overall bandwidth of the traditional transformer, and the bandwidth of the transformer 1 in this case is at least 1.3 times greater than the bandwidth of the traditional transformer. As shown in Figure 5, the traditional transformer has a resonance point at a frequency of 180MHz, so that the attenuation d1 of the traditional transformer is less than 2dB. The transformer 1 in this case does not have a resonance point due to the winding method of the above wires, so the transformer in this case does not have a resonance point. The attenuation d2 of 1 can reach 14dB, which is much larger than the attenuation d1 of the traditional transformer. That is, the difference between the attenuation d2 of the transformer 1 in this case and the attenuation d1 of the traditional transformer is large. at 12dB. According to the above attenuation analysis, it can be seen that the attenuation d1 of the traditional transformer is higher, while the attenuation d2 of the transformer 1 in this case is lower. It can further be seen that the frequency waveform of the traditional transformer is prone to jitter at high frequencies, while the frequency of the transformer 1 in this case is Waveforms are less likely to jitter at high frequencies.

Please refer to Figures 6A and 6B, which are respectively the test waveform diagram of the traditional transformer at high frequency and the test waveform diagram of the transformer in this case at high frequency. As shown in Figure 6A, the waveform of the traditional transformer at high frequency obviously has jitter, but as shown in Figure 6B, the waveform of transformer 1 in this case does not have jitter at high frequency, making the test results of the transformer in this case better, and the overall Better characteristics. Please refer to Figures 7A and 7B, which are respectively the waveform diagram of the power spectral density of the traditional transformer and the test waveform diagram of the power spectral density of the transformer in this case. As shown in Figure 7A, since the traditional transformer has a resonance point, the power spectral density of the traditional transformer increases and exceeds the upper limit of the test data, making it easier to measure noise, thus causing the overall noise of the traditional transformer to be relatively high. From the above, it can be seen that the transformer 1 in this case does not have a resonance point, so the power spectral density of the transformer 1 is low and lower than the upper limit of the test data, which makes the noise of the transformer 1 in this case difficult to be measured, thereby reducing the power of the transformer in this case. An overall noise ratio of 1.

It can be seen from the above that the first conductor 3 and the second conductor 4 of the transformer 1 in this case are wound on the center column 23 in a mutually twisted manner, and the third conductor 5 and the fourth conductor 6 are wound in a mutually twisted manner. on the center pillar 23. Therefore, compared with the windings of traditional transformers that are directly arranged on the magnetic core, the wires of the transformer 1 in this case are wound on the center pillar 23 in a relatively tight manner. According to the above wire winding method, the transformer in this case has The frequency upper limit of 1 is increased, that is, the bandwidth is relatively improved. In addition, the transformer 1 in this case does not have a resonance point, so the attenuation of the transformer 1 in this case can reach 14dB, which is much greater than the attenuation of a traditional transformer. This further makes the frequency waveform of the transformer 1 less likely to jitter at high frequencies, so The overall characteristics are better. And because the power spectral density is low and lower than the upper limit of the test data, the noise of the transformer 1 in this case is difficult to measure, thereby reducing the overall noise ratio of the transformer 1.

In some embodiments, the wires can not only be arranged as in the above embodiments, but can also be connected to different electrodes on the first flange 21 and the second flange 22 . Please refer to Figure 8, which is a schematic diagram of the winding method of some wires of the transformer according to the second embodiment of the present invention. As shown in the figure, compared with the transformer 1 in Figure 2, the third end 41 of the second conductor 4 of the transformer 1a of this embodiment is disposed on the fourth electrode 214 of the first flange 21, and the fourth conductor 6 The seventh end 61 is provided on the third electrode 213 of the first flange 21 . According to the above wire connection relationship, it can be seen that the first end 31 of the first wire 3, the fifth end 51 of the third wire 5, the seventh end 61 of the fourth wire 6 and the second wire 4 of the transformer 1a in this embodiment The third ends 41 are arranged on the first flange 21 in sequence.

Of course, the order in which the conductors are arranged on the first flange 21 and the second flange 22 is not limited to the method of arranging the conductors of the transformer 1 of the first embodiment and the method of arranging the conductors of the transformer 1a of the second embodiment. For the sake of clarity, The possibility of arranging the sequence of all wires on the first flange 21 and the second flange 22 is explained, and the number of drawings of this case is simplified. The following will be presented in the form of a table, as shown in Table 1 below, where Table 1 shows The conductors of the transformers of different embodiments are respectively provided at corresponding electrodes on the first flange 21 and the second flange 22 .

As shown in Table 1, for example, the first end 31 of the first wire 3 of the transformer numbered 4 is located on the second electrode 212 of the first flange 21, and the second end 32 of the first wire 3 is located on the second electrode 212 of the first flange 21. On the eighth electrode 224 of the second flange 22 , the third end 41 of the second conductor 4 is provided on the fourth electrode 214 of the first flange 21 , and the fourth end 42 of the second conductor 4 is provided on the second flange 22 On the sixth electrode 222, the fifth end 51 of the third conductor 5 is provided on the first electrode 211 of the first flange 21, and the sixth end 52 of the third conductor 5 is provided on the seventh electrode 223 of the second flange 22. , the seventh end 61 of the fourth wire 6 is provided on the third electrode 213 of the first flange 21, and the eighth end 62 of the fourth wire 6 is provided on the fifth electrode 221 of the second flange 22. According to the above wire connection It can be seen from the relationship that the fifth end 51 of the third conductor 5 of the transformer 1, the first end 31 of the first conductor 3, the seventh end 61 of the fourth conductor 6 and the third end 41 of the second conductor 4 of the transformer 1 are as follows: are arranged on the first flange 21 in sequence, and the second end 32 of the first conductor 3, the sixth end 52 of the third conductor 5, the fourth end 42 of the second conductor 4 and the eighth end 62 of the fourth conductor 6 arranged on the second flange 22 in sequence. In order to simplify the description, the connection methods of the conductors of the transformers in other different embodiments will not be described again.

According to Table 1, it can be seen that the conductors of the transformers with embodiment numbers 1, 5, 9, and 13 are arranged on the first flange 21 in the order of the first end 31 of the first conductor 3 and the third end of the third conductor 5. The fifth end 51 , the third end 41 of the second conductor 4 and the seventh end 61 of the fourth conductor 6 are arranged on the first flange 21 in sequence. Examples The conductors of the transformers numbered 2, 6, 10, and 14 are arranged on the first flange 21 in the order of the first end 31 of the first conductor 3, the fifth end 51 of the third conductor 5, and the fourth conductor 6. The seventh end 61 and the third end 41 of the second wire 4 are arranged on the first flange 21 in sequence. The transformers with embodiment numbers 3, 7, 11, and 15 have conductors arranged on the first flange 21 in the order of the fifth end 51 of the third conductor 5, the first end 31 of the first conductor 3, the second The third end 41 of the conductor 4 and the seventh end 61 of the fourth conductor 6 are arranged on the first flange 21 in sequence. The transformers with embodiment numbers 4, 8, 12, and 16 have conductors arranged on the first flange 21 in the order of the fifth end 51 of the third conductor 5, the first end 31 of the first conductor 3, and the fourth end of the first conductor 3. The seventh end 61 of the conductor 6 and the third end 41 of the second conductor 4 are arranged on the first flange 21 in sequence.

The transformers with embodiment numbers 1, 2, 3, and 4 have conductors arranged on the second flange 22 in the order of the second end 32 of the first conductor 3, the sixth end 52 of the third conductor 5, the second The fourth end 42 of the conductor 4 and the eighth end 62 of the fourth conductor 6 are arranged on the second flange 22 in sequence. The transformers with embodiment numbers 5, 6, 7, and 8 have conductors arranged on the second flange 22 in the order of the first end 31 of the first conductor 3, the fifth end 51 of the third conductor 5, and the fourth end of the third conductor 5. The seventh end 61 of the conductor 6 and the third end 41 of the second conductor 4 are arranged on the second flange 22 in sequence. The transformers with embodiment numbers 9, 10, 11, and 12 have conductors arranged on the second flange 22 in the order of the fifth end 51 of the third conductor 5, the first end 31 of the first conductor 3, the second The third end 41 of the conductor 4 and the seventh end 61 of the fourth conductor 6 are arranged on the second flange 22 in sequence. The transformers with embodiment numbers 13, 14, 15, and 16 have conductors arranged on the second flange 22 in the order of the fifth end 51 of the third conductor 5, the first end 31 of the first conductor 3, and the fourth end of the first conductor 3. The seventh end 61 of the conductor 6 and the third end 41 of the second conductor 4 are arranged on the second flange 22 in sequence. The transformer in this case can further increase the upper frequency limit according to the arrangement order of different conductors on the first flange 21 and the second flange 22 .

In some embodiments, the winding direction of the first conductor 3 and the second conductor 4 on the center column 23 is different from the winding direction of the third conductor 5 and the fourth conductor 6 on the center column 23 . Please refer to Figure 9 in conjunction with Figure 1, which Figure 9 is a schematic diagram of the winding method of some wires of the transformer according to the third embodiment of the present invention. As shown in the figure, compared with the transformer 1 shown in Figure 2, the winding direction of the first conductor 3 and the second conductor 4 on the center column 23 of the transformer 1b of this embodiment is the first direction, and the third conductor 5 and The winding direction of the fourth conductor 6 on the center column 23 is the second direction, and the first direction is different from the second direction. For example, the winding direction of the first conductor 3 and the second conductor 4 on the center column 23 is the clockwise direction. , the winding direction of the third conductor 5 and the fourth conductor 6 on the center column 23 is counterclockwise, and the transformer of this embodiment can further increase the upper frequency limit according to the different winding directions of the two sets of conductors.

In some embodiments, not all of the four conductors are wound around the center column in a twisted manner. Only two of the conductors may be wound around the center column in a twisted manner, and the other two conductors are twisted around each other. The wires are wound around the center column in a parallel manner. Please refer to Figure 10, which is a schematic diagram of the winding method of some wires of the transformer according to the fourth embodiment of the present invention. As shown in the figure, compared with the transformer 1 shown in Figure 2, the first conductor 3 and the second conductor 4 of the transformer 1c of this embodiment are twisted around each other on the center column 23 to form the outer conductor. , and the third conductor 5 and the fourth conductor 6 are wound around the center pillar 23 in a parallel manner to form an inner conductor. Similar to Figure 3 of the first embodiment, the third conductor 5 and the fourth conductor 6 of this embodiment are The inner conductor composed of the fourth conductor 6 is located between the center pillar 23 and the outer conductor composed of the first conductor 3 and the second conductor 4 .

Please refer to Figure 11, which is a schematic diagram of the winding method of some wires of the transformer according to the fifth embodiment of this case. As shown in the figure, compared with the transformer 1 shown in Figure 2, the first conductor 3 and the second conductor 4 of the transformer 1d of this embodiment are wound around the center column 23 in a parallel manner to form the outer conductors. And the third conductor 5 and the fourth conductor 6 are twisted around each other on the center column 23 to form an inner conductor. Similar to Figure 3 of the first embodiment, the third conductor 5 and the fourth conductor 6 of this embodiment are The inner conductor composed of the fourth conductor 6 is located between the center pillar 23 and the outer conductor composed of the first conductor 3 and the second conductor 4 .

Please refer to Figure 12, which is a schematic structural diagram of the transformer system of the first embodiment of this case. In Figure 12, the transformer 1 of the first embodiment is taken as an example. The transformer system 8 of this embodiment includes the transformer 1 and a circuit board 7. The circuit board 7 includes a surface 7a, and the transformer 1 is disposed on the surface 7a of the circuit board 7. , and there is a line 71 on the surface 7a of the circuit board 7, as shown by the dotted line in Figure 12, the two ends of the line 71 are connected to the first conductor 3 and the third conductor 5 respectively, and the extension direction of the line 71 is in line with the center column 23 The extension direction is the same, and the projection of the line 71 on the surface 7a of the circuit board 7 partially overlaps with the projection of the first flange 21 and the second flange 22 on the surface 7a of the circuit board 7, as shown by arrows A and 7 in Figure 12. As shown in B, the relative position between the above-mentioned line 71 and the transformer 1 will make the noise of the transformer 1 in this case lower.

Please refer to Figure 13, which is a schematic structural diagram of the transformer system of the second embodiment of this case. In Figure 13, the transformer 1 of the first embodiment is taken as an example. The transformer system 8a of this embodiment includes the transformer 1 and a circuit board 7. The circuit board 7 includes a surface 7a. The transformer 1 is disposed on the surface 7a of the circuit board 7. , and there is a line 71 on the surface 7a of the circuit board 7, as shown by the dotted line in Figure 12, the two ends of the line 71 are connected to the first conductor 3 and the third conductor 5 respectively, and the extension direction of the line 71 is in line with the center column 23 The extension directions are different. For example, the extension direction of the line 71 and the extension direction of the center column 23 are perpendicular to each other. The projection of the line 71 on the surface 7a of the circuit board 7 will be the same as the projection of the first flange 21 on the surface 7a of the circuit board 7. Overlap, as shown by arrow C in Figure 13, and the relative position between the above-mentioned line 71 and the transformer 1 will reduce the current loss of the transformer 1 in this case. Of course, in other embodiments, the projection of the line 71 on the surface 7 a of the circuit board 7 will partially overlap with the projection of the second flange 22 on the surface 7 a of the circuit board 7 .

To sum up, the first conductor and the second conductor of the transformer in this case are twisted around each other on the central column, and the third conductor and the fourth conductor are twisted around each other or parallel. Therefore, the wires of the transformer in this case are wound on the center column in a relatively tight manner. According to the above wire winding method, the upper frequency limit of the transformer in this case can be increased, that is, the bandwidth can be increased. In addition, this The transformer in this case does not have a resonance point, so the attenuation of the transformer in this case can reach 14dB, which is much greater than the attenuation of a traditional transformer. This further makes the frequency waveform of transformer 1 less likely to jitter at high frequencies, so the overall characteristics are better. . And because the power spectral density is low and lower than the upper limit of the test data, the noise of the transformer in this case is difficult to measure, thereby reducing the overall noise ratio of the transformer.

1: Transformer

2: Magnetic core

21:First flange

211: First electrode

212: Second electrode

213:Third electrode

214:Fourth electrode

22:Second flange

221:Fifth electrode

222:Sixth electrode

223:Seventh electrode

224:The eighth electrode

23: middle pillar

3: First wire

31:First end

32:Second end

4:Second wire

41:Third end

42:Fourth end

5:Third wire

51:fifth end

52:Sixth end

6:Fourth wire

61:Seventh end

62:Eighth end

Claims (18)

A transformer containing: A magnetic core includes a first flange, a second flange and a center column, the first flange and the second flange are respectively located at both ends of the center column; A first conductor includes a first end and a second end, the first end is provided on the first flange, the second end is provided on the second flange, and the first conductor is wound around the middle on the pillar; A second conductor includes a third end and a fourth end. The third end is provided on the first flange. The fourth end is provided on the second flange. The second conductor is wound around the middle end. on the pillar; A third conductor includes a fifth end and a sixth end, the fifth end is provided on the first flange, the sixth end is provided on the second flange, and the third conductor is wound around the middle on the pillar; and A fourth conductor includes a seventh end and an eighth end, the seventh end is provided on the first flange, the eighth end is provided on the second flange, and the fourth conductor is wound around the middle on the pillar; The first conductor and the second conductor are twisted around each other to form a first twisted wire and wound around the center column, and the third conductor and the fourth conductor are twisted around each other to form a first twisted wire. The second strand is wound around the center post; The first twisted wire and the second twisted wire are not twisted around each other. The transformer of claim 1, wherein the first conductor and the third conductor constitute a primary side winding of the transformer, and the second conductor and the fourth conductor constitute a primary side winding of the transformer. The transformer of claim 1, wherein the first end of the first conductor, the fifth end of the third conductor, the third end of the second conductor and the seventh end of the fourth conductor are in accordance with The order is arranged on the first flange. The transformer of claim 1, wherein the fifth end of the third conductor, the first end of the first conductor, the third end of the second conductor and the seventh end of the fourth conductor are in accordance with The order is arranged on the first flange. The transformer of claim 1, wherein the first end of the first conductor, the fifth end of the third conductor, the seventh end of the fourth conductor and the third end of the second conductor are in accordance with The order is arranged on the first flange. The transformer of claim 1, wherein the fifth end of the third conductor, the first end of the first conductor, the seventh end of the fourth conductor and the third end of the second conductor are in accordance with The order is arranged on the first flange. The transformer of claim 1, wherein the winding direction of the first conductor and the second conductor on the center column is the same as the winding direction of the third conductor and the fourth conductor on the center column. The transformer of claim 1, wherein the winding direction of the first conductor and the second conductor on the center column is different from the winding direction of the third conductor and the fourth conductor on the center column. The transformer of claim 1, wherein the second end of the first conductor, the sixth end of the third conductor, the fourth end of the second conductor and the eighth end of the fourth conductor are in accordance with The order is arranged on the second flange. The transformer of claim 1, wherein the sixth end of the third conductor, the second end of the first conductor, the fourth end of the second conductor and the eighth end of the fourth conductor are in accordance with The order is arranged on the second flange. The transformer of claim 1, wherein the second end of the first conductor, the sixth end of the third conductor, the eighth end of the fourth conductor and the sixth end of the second conductor are in accordance with The order is arranged on the second flange. The transformer of claim 1, wherein the sixth end of the third conductor, the second end of the first conductor, the eighth end of the fourth conductor and the fourth end of the second conductor are in accordance with The order is arranged on the second flange. A transformer containing: A magnetic core includes a first flange, a second flange and a center column, the first flange and the second flange are respectively located at both ends of the center column; A first conductor includes a first end and a second end, the first end is provided on the first flange, the second end is provided on the second flange, and the first conductor is wound around the middle on the pillar; A second conductor includes a third end and a fourth end. The third end is provided on the first flange. The fourth end is provided on the second flange. The second conductor is wound around the middle end. on the pillar; A third conductor includes a fifth end and a sixth end, the fifth end is provided on the first flange, the sixth end is provided on the second flange, and the third conductor is wound around the middle on the pillar; and A fourth conductor includes a seventh end and an eighth end, the seventh end is provided on the first flange, the eighth end is provided on the second flange, and the fourth conductor is wound around the middle on the pillar; The first conductor and the second conductor are wound around the center column in a twisted manner, and the third conductor and the fourth conductor are wound around the center column in a parallel manner. A transformer system consisting of: A transformer as described in claims 1 to 13 above; and A circuit board, wherein the transformer is provided on a circuit board, and the circuit board has a circuit, wherein both ends of the circuit are electrically connected to the first conductor and the third conductor respectively. The transformer system as claimed in claim 14, wherein the extension direction of the line is the same as the extension direction of the center column. The voltage transformation system of claim 14, wherein the projection of the line on a surface of the circuit board partially overlaps the projection of the first flange and the second flange on the surface of the circuit board. The transformer system as claimed in claim 14, wherein the extension direction of the line is different from the extension direction of the center column. The voltage transformation system of claim 14, wherein the projection of the line on a surface of the circuit board partially overlaps the projection of the first flange or the second flange on the surface of the circuit board.