CN215527387U - Discrete transformer - Google Patents
Discrete transformer Download PDFInfo
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- CN215527387U CN215527387U CN202120893957.9U CN202120893957U CN215527387U CN 215527387 U CN215527387 U CN 215527387U CN 202120893957 U CN202120893957 U CN 202120893957U CN 215527387 U CN215527387 U CN 215527387U
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Abstract
According to the discrete transformer, the input module, the transformation module and the transformation module are arranged, so that the electrical isolation effect can be achieved; in addition, the input module and the transformation module are not packaged and integrated in one shell and are independently arranged on the mainboard of the router, so that the height of the discrete transformer is not too large, that is, too much internal installation space is not occupied, and the manufacturing cost of the discrete transformer is greatly reduced; moreover, when the discrete transformer is damaged, the damaged element is replaced correspondingly, so that the later maintenance cost can be greatly reduced.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a discrete transformer.
Background
The router is a device for receiving and transmitting wireless signals, and in order to enable the router to work more stably, a transformer is arranged inside the router. The purpose of the transformer is to transform the input voltage in a 1:1 manner, and to perform an electrical isolation function, since the voltages of the primary end and the secondary end of the transformer do not change, but the router is a weak current device, the internal ground level and the external ground level will not be uniform, and if the router is not electrically isolated by the transformer, the router may be damaged by the input voltage.
For the existing transformer, the transformer is produced by adopting an integrated circuit design, and when the transformer is applied to the interior of a router, the whole packaged transformer is arranged in the router and is connected with an interface. Although the transformer can play a role in electrical isolation, the transformer still has defects, and the overall manufacturing cost of the transformer is greatly increased due to the adoption of the integrated circuit design for packaging; in addition, all electronic components are packaged in the transformer, and the electronic components are packaged, so that the height of the transformer is increased due to double packaging, and more internal space of the router is occupied; moreover, if one of the electronic components is damaged and cannot work normally, the whole transformer must be replaced, which undoubtedly increases the maintenance cost in the later period.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide the discrete transformer which can play a role in electrical isolation, does not occupy too much internal space and has lower manufacturing cost and later maintenance cost.
The purpose of the utility model is realized by the following technical scheme:
a discrete transformer, comprising:
the input module comprises a connecting terminal and an anti-static module, and the connecting terminal is connected with the anti-static module; and
the transformer module comprises a plurality of transformer modules, each transformer module comprises a transformer unit, a low-frequency filter unit and a high-frequency filter unit, the transformer units are respectively connected with the connecting terminals and the low-frequency filter unit, the low-frequency filter unit is further used for being connected with an external chip, and the high-frequency filter unit is connected with the low-frequency filter unit.
In one embodiment, the anti-static module includes a resistor R1, a resistor R2, and a capacitor C1, one end of the resistor R1 is connected to the connection terminal, one end of the resistor R1 is connected to the connection terminal, the other end of the resistor R1 is connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, one end of the resistor R2 is connected to the connection terminal, and the other end of the resistor R2 is connected to one end of the capacitor C1.
In one embodiment, the transforming unit includes a common mode inductor L1 and a transformer T1, a 1 st pin of the common mode inductor L1 is connected to the connection terminal and the low frequency filtering unit, a 2 nd pin of the common mode inductor L1 is connected to ground, a 3 rd pin of the common mode inductor L1 is connected to the connection terminal and the low frequency filtering unit, a 4 th pin of the common mode inductor L1 is connected to ground, one end of a primary winding of the transformer T1 is connected to the 1 st pin of the common mode inductor L1, the other end of the primary winding of the transformer T1 is connected to the 2 nd pin of the common mode inductor L1, one end of a secondary winding of the transformer T1 is connected to the low frequency filtering unit of the high frequency filtering unit, and the other end of the secondary winding of the transformer T1 is connected to the low frequency filtering unit of the high frequency filtering unit.
In one embodiment, the low frequency filter unit includes a capacitor C2 and a capacitor C3, one end of the capacitor C2 is connected to one end of the secondary winding of the transformer T1, the other end of the capacitor C2 is connected to the high frequency filter unit, one end of the capacitor C3 is connected to the other end of the secondary winding of the transformer T1, and the other end of the capacitor C3 is connected to the high frequency filter unit.
In one embodiment, the high-frequency filtering unit includes a capacitor C4 and a capacitor C5, one end of the capacitor C4 is connected to the other end of the capacitor C2, the other end of the capacitor C4 is grounded, one end of the capacitor C5 is connected to the other end of the capacitor C3, and the other end of the capacitor C5 is grounded.
In one embodiment, the high frequency filtering unit further includes a switch K1 and a switch K2, the switch K1 is connected in parallel with the capacitor C4, and the switch K2 is connected in parallel with the capacitor C5.
Compared with the prior art, the utility model at least has the following advantages and beneficial effects:
according to the discrete transformer, the input module, the transformation module and the transformation module are arranged, so that the electrical isolation effect can be achieved; in addition, the input module and the transformation module are not packaged and integrated in one shell and are independently arranged on the mainboard of the router, so that the height of the discrete transformer is not too large, that is, too much internal installation space is not occupied, and the manufacturing cost of the discrete transformer is greatly reduced; moreover, when the discrete transformer is damaged, the damaged element is replaced correspondingly, so that the later maintenance cost can be greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic block diagram of a discrete transformer according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of an input module according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a transformer module according to an embodiment of the utility model.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a discrete transformer 10 includes an input module 100 and a transforming module 200.
Thus, it should be noted that the input module 100 plays a role of connection; the transformer module 200 plays a role of electronic isolation.
Referring to fig. 1, the input module 100 includes a connection terminal 110 and an anti-static module 120, wherein the connection terminal 110 is connected to the anti-static module 120.
Thus, it should be noted that the connection terminal 110 plays a role of connection, and when the discrete transformer 10 is applied to a router, the connection terminal 110 serves as a connection port of the router for connecting with an external device; the anti-static module 120 plays a role of preventing static electricity, and prevents excessive static current from damaging the discrete transformer 10.
Referring to fig. 1, the transformer module 200 includes a plurality of transformer modules 210, each of the transformer modules 210 includes a transformer unit 211, a low frequency filter unit 212, and a high frequency filter unit 213, the transformer unit 211 is connected to the connection terminal 110 and the low frequency filter unit 212, the low frequency filter unit 212 is further configured to be connected to an external chip, and the high frequency filter unit 213 is connected to the low frequency filter unit 212.
Thus, it should be noted that the voltage transformation unit 211 plays a role of electrical isolation; the low frequency filtering unit 212 and the high frequency filtering unit 213 both function as filtering, and both filtering units may function as double filtering.
Further, referring to fig. 2, the anti-static module 120 includes a resistor R1, a resistor R2, and a capacitor C1, wherein one end of the resistor R1 is connected to the connection terminal 110, one end of the resistor R1 is connected to the connection terminal 110, the other end of the resistor R1 is connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, one end of the resistor R2 is connected to the connection terminal, and the other end of the resistor R2 is connected to one end of the capacitor C1.
In this way, when a large current is input to the external device, the capacitor C1 may pass the large current to the ground, so as to implement the anti-static process.
Further, referring to fig. 2, in one embodiment, the transforming unit 211 includes a common mode inductor L1 and a transformer T1, a 1 st pin of the common mode inductor L1 is connected to the connection terminal 110 and the low frequency filtering unit 212, a 2 nd pin of the common mode inductor L1 is connected to ground, a 3 rd pin of the common mode inductor L1 is connected to the connection terminal 110 and the low frequency filtering unit 212, a 4 th pin of the common mode inductor L1 is connected to ground, one end of a primary coil of the transformer T1 is connected to the 1 st pin of the common mode inductor L1, the other end of the primary coil of the transformer T1 is connected to the 2 nd pin of the common mode inductor L1, one end of a secondary coil of the transformer T1 is connected to the low frequency filtering unit 213, and the other end of the secondary coil of the transformer T1 is connected to the low frequency filtering unit 213.
In this way, the common mode inductor L1 and the transformer T1 both function as a transformer and an electrical isolator, and the transformer T1 is used to transform the input voltage by 1 to 1.
Further, referring to fig. 3, in one embodiment, the low frequency filtering unit 212 includes a capacitor C2 and a capacitor C3, one end of the capacitor C2 is connected to one end of the secondary winding of the transformer T1, the other end of the capacitor C2 is connected to the high frequency filtering unit 213, one end of the capacitor C3 is connected to the other end of the secondary winding of the transformer T1, and the other end of the capacitor C3 is connected to the high frequency filtering unit 213.
Thus, it should be noted that the capacitor C2 and the capacitor C3 both function as a filter to eliminate spurious signals, but it should be noted that the low frequency filtering unit 212 is used to filter spurious signals in a low frequency band.
It should be noted that the other end of the capacitor C2 and the other end of the capacitor C3 are also used for connection with an external chip.
Further, referring to fig. 3 again, in one embodiment, the high frequency filtering unit 213 includes a capacitor C4 and a capacitor C5, one end of the capacitor C4 is connected to the other end of the capacitor C2, the other end of the capacitor C4 is grounded, one end of the capacitor C5 is connected to the other end of the capacitor C3, and the other end of the capacitor C5 is grounded.
In this way, it should be noted that the capacitor C4 and the capacitor C5 also function as a filter to eliminate spurious signals.
Further, referring to fig. 3 again, in one embodiment, the high frequency filtering unit 213 further includes a switch K1 and a switch K2, the switch K1 is connected in parallel with the capacitor C4, and the switch K2 is connected in parallel with the capacitor C5.
In this way, it should be noted that, the switch K1 and the switch K2 are provided, since the high-frequency filtering unit 213 filters signals of a specific frequency band, when the signals of the specific frequency band are not required to be filtered, the switch K1 and the switch K2 are closed, and the capacitor C4 and the capacitor C5 are short-circuited, so that the overall power consumption of the discrete transformer 10 can be reduced.
It should be noted that, when the discrete transformer 10 is disposed in the router, the input module 100 and the transforming module 200 are disposed on the motherboard of the router. The arrangement of the voltage transformation module 200 can play a role in electrical isolation; in addition, because the input module 100 and the transforming module 200 are not packaged and integrated in a single case, but are independently disposed on the motherboard of the router (i.e. all the electronic devices of the input module 100 and the transforming module 200 are disposed on the motherboard of the router), the height of the discrete transformer 10 is not too large, i.e. the discrete transformer 10 does not occupy too much internal installation space, and the manufacturing cost of the discrete transformer 10 is also greatly reduced; moreover, when the discrete transformer 10 is damaged, the damaged elements are replaced correspondingly, so that the later maintenance cost can be greatly reduced.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A discrete transformer, comprising:
the input module comprises a connecting terminal and an anti-static module, and the connecting terminal is connected with the anti-static module; and
the transformer module comprises a plurality of transformer modules, each transformer module comprises a transformer unit, a low-frequency filter unit and a high-frequency filter unit, the transformer units are respectively connected with the connecting terminals and the low-frequency filter unit, the low-frequency filter unit is further used for being connected with an external chip, and the high-frequency filter unit is connected with the low-frequency filter unit.
2. The discrete transformer of claim 1, wherein the anti-static module comprises a resistor R1, a resistor R2, and a capacitor C1, one end of the resistor R1 is connected to the connection terminal, one end of the resistor R1 is connected to the connection terminal, the other end of the resistor R1 is connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, one end of the resistor R2 is connected to the connection terminal, and the other end of the resistor R2 is connected to one end of the capacitor C1.
3. The discrete transformer of claim 1, wherein the transforming unit comprises a common mode inductor L1 and a transformer T1, the 1 st pin of the common mode inductor L1 is respectively connected with the connecting terminal and the low frequency filtering unit, the 2 nd pin of the common mode inductor L1 is grounded, the 3 rd pin of the common mode inductor L1 is respectively connected with the connecting terminal and the low frequency filtering unit, the 4 th pin of the common mode inductor L1 is grounded, one end of the primary coil of the transformer T1 is connected with the 1 st pin of the common mode inductor L1, the other end of the primary coil of the transformer T1 is connected to pin 2 of the common mode inductor L1, one end of the secondary coil of the transformer T1 is connected to the low frequency filtering unit of the high frequency filtering unit, the other end of the secondary coil of the transformer T1 is connected with the low-frequency filtering unit of the high-frequency filtering unit.
4. The discrete transformer of claim 3, wherein the low frequency filter unit comprises a capacitor C2 and a capacitor C3, one end of the capacitor C2 is connected to one end of the secondary winding of the transformer T1, the other end of the capacitor C2 is connected to the high frequency filter unit, one end of the capacitor C3 is connected to the other end of the secondary winding of the transformer T1, and the other end of the capacitor C3 is connected to the high frequency filter unit.
5. The discrete transformer of claim 4, wherein the high frequency filtering unit comprises a capacitor C4 and a capacitor C5, one end of the capacitor C4 is connected to the other end of the capacitor C2, the other end of the capacitor C4 is grounded, one end of the capacitor C5 is connected to the other end of the capacitor C3, and the other end of the capacitor C5 is grounded.
6. The discrete transformer of claim 5, wherein the high frequency filtering unit further comprises a switch K1 and a switch K2, the switch K1 is connected in parallel with the capacitor C4, and the switch K2 is connected in parallel with the capacitor C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120893957.9U CN215527387U (en) | 2021-04-27 | 2021-04-27 | Discrete transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120893957.9U CN215527387U (en) | 2021-04-27 | 2021-04-27 | Discrete transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215527387U true CN215527387U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120893957.9U Active CN215527387U (en) | 2021-04-27 | 2021-04-27 | Discrete transformer |
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| Country | Link |
|---|---|
| CN (1) | CN215527387U (en) |
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2021
- 2021-04-27 CN CN202120893957.9U patent/CN215527387U/en active Active
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Address after: 516006 No.2, JINDA Road, Huinan hi tech Industrial Park, huiao Avenue, Huizhou City, Guangdong Province Patentee after: Huizhou Gaoshengda Technology Co.,Ltd. Address before: 516006 No.2, JINDA Road, Huinan hi tech Industrial Park, huiao Avenue, Huizhou City, Guangdong Province Patentee before: HUIZHOU GAOSHENGDA TECHNOLOGY Co.,Ltd. |