TWI616907B - A port transformer with electronic circuit structure instead of coil with core - Google Patents

Abstract

The invention provides a connection transformer comprising an electronic circuit structure instead of a magnetic core coil, comprising a coupling module, a filter module and a protection module; the coupling module is used for bidirectional coupling of high speed network signals and isolating DC signals; coupling The module adopts a capacitive coupling mode, and is provided with a plurality of sets of capacitive coupling units, each capacitive coupling unit is provided with a set of capacitors; the filter module is used for filtering high frequency unwanted signals in the network signal, and adopting Bessel ( Bessel type band stop filter and or Bessel type signal line (Trace) filter structure. The connection 埠 transformer adopts an electronic circuit structure to realize the coupling, filtering and protection functions of the transformer, completely replaces the traditional magnetic core coil structure, and is a connection 埠 transformer suitable for automatic production, low labor cost, high qualified rate of finished products and strong competitiveness.

Description

Connecting 埠 transformer using electronic circuit structure instead of magnetic core coil

The invention relates to the field of communication equipment, in particular to a connection transformer which adopts an electronic circuit structure instead of a magnetic core coil, is suitable for automatic production and has low labor cost, and belongs to a basic new type of electronic technology.

Today is a time when communications are highly developed. Society has entered the Internet age. Among them, the improvement of network technology and the upgrading of network equipment play a pivotal role.

In the network transmission, a connection transformer is connected between the external network cable and the router or other internal electronic devices. The transformer mainly realizes the isolation coupling, filtering and protection functions, and the existing connection transformer is generally a traditional magnetic core coil structure. As shown in Figure 1, the process steps of this type of transformer are: 1) manual winding of the core transformer T1; 2) manual winding of the core common mode suppressor T2; 3) manual winding to the transformer housing wiring feet; 4) manual Welding transformer housing wiring feet; 5) point fangli water; 6) Bake the transformer to dry the varnish water; 7) Test.

The shortcomings are: a large number of manual winding transformer magnetic coil windings are required, the labor cost is high, the efficiency is low, and the product competitiveness is poor; at the same time, the artificial production makes the quality of the finished product difficult to control, resulting in high defect rate.

The object of the present invention is to adopt a traditional magnetic core coil structure for the existing connecting 埠 transformer, which requires a large number of manual winding coils in the production process, high labor cost, poor product competitiveness, and difficulty in quality control, and provides an electronic circuit structure instead. The core coil is connected to the transformer. The connection transformer adopts an electronic circuit structure to realize the coupling, filtering and protection functions of the connection transformer. It completely replaces the traditional core coil structure, and is suitable for automatic production, low labor cost and good product yield. High and competitive base new type of connected transformer.

In order to solve the above prior art problems, the technical solution of the present invention is: a connection transformer that replaces a magnetic core coil by using an electronic circuit structure, which includes a coupling module, a filter module, and a protection module; The two-way coupling of the high-speed network signal and the isolation of the DC signal; as an improvement, the coupling module adopts a capacitive coupling manner, and the coupling module is provided with a plurality of sets of capacitive coupling units, and the capacitive coupling units are respectively a set of capacitors is provided; the filter module is configured to filter high frequency unwanted signals in the network signal; the filter module uses a Bessel type band stop filter and or a quasi-besser a Bessel type signal filtering structure; the Bessel type band stop filter includes an inductance element and a capacitor; and the Bessel type signal line (Trace) filter The structure uses a circuit structure on a printed circuit board (PCB) to implement the function of a Bessel type band rejection filter, and the Bessel type signal line (Trace) filter structure is provided with a cyclotron trace. Implementing an inductive component function, the Bessel-type signal line (Trace) filter structure is provided with copper or tin foil on the upper and lower layers of the printed circuit board (PCB) to implement a capacitor function; the protection module For venting abnormal high voltages and large currents, protecting secondary electronic components and circuits; as an improvement, the protection module is provided with a bleeder circuit composed of semiconductor elements, and the bleeder circuit includes multiple sets of products The body circuit (IC) unit; as an improvement, the protection module is provided with a board-level tip discharge circuit on the circuit board.

The topology of the connection transformer can be set to be consistent with the traditional type of connection transformer topology or with the conventional type of connection transformer topology. When the topology of the connection and transformer is consistent with the traditional type of connection and the transformer topology, the connection The pin function and position of the transformer are the same as those of the traditional transformer, which can realize rapid replacement on the related equipment. The connection mode of the transformer is dual-in-line (DIP) or surface mount welding (SMT). In the case of dual in-line (DIP) mode, the three functional modules connected to the transformer are packaged separately or in combination in a transformer housing having multiple pins; when it is a surface mount soldering (SMT) method, The three functions of the connected transformer The modules are collectively disposed on a printed circuit board (PCB).

The invention relates to a connecting 埠 transformer using an electronic circuit structure instead of a magnetic core coil, and the beneficial effects thereof are as follows: 1. Due to the adoption of the electronic circuit structure, the production process can be completely automated, the labor cost is significantly reduced, and the product is suitable for large-scale production; 2. The product quality can be Good controllability, stable quality, high production efficiency; 3, using electronic circuit structure, in the realization of the coupling, filtering, protection function of the connection 埠 transformer, compared to the traditional magnetic core coil structure performance is better, is a fundamental technology Innovation is more in line with the needs of technological development in the modern era.

1‧‧‧Coupling module

11‧‧‧ capacitor

2‧‧‧Filter module

21‧‧‧Spinning

22‧‧‧Stacked layers

23‧‧‧ copper foil

3‧‧‧Protection module

T1‧‧‧Magnetic core transformer

T2‧‧‧Magnetic Common Mode Suppressor

1 is a circuit diagram of a conventional connection transformer; FIG. 2 is an overall structural diagram of a connection transformer using an electronic circuit structure instead of a magnetic core coil; FIG. 3 is an electronic circuit structure replacing an magnetic core according to the present invention; Circuit diagram of the coupling module of the coil 埠 transformer; FIG. 4 is a circuit diagram of a Bessel type band rejection filter for the filter module of Embodiment 1; FIG. 5 is an electronic circuit structure replacement of the present invention. The circuit diagram of the protection module of the transformer of the magnetic core coil; FIG. 6 is a schematic diagram of the cyclotron trace of the Bessel-type signal line (Trace) filter structure of the second embodiment; FIG. 7 is an embodiment. 2 is a schematic diagram of a capacitor function of a Bessel-type signal line (Trace) filter structure; 8 is an application intention of an integrated circuit (IC) for a protection module of a transformer connected to a magnetic core coil using an electronic circuit structure; and FIG. 9 is an electronic circuit structure instead of a magnetic core coil connection according to the present invention; Circuit diagram of the internal structure of the integrated circuit (IC) of the protection module of the transformer.

The present invention will be further described below in conjunction with the embodiments:

Example 1

Referring to FIG. 2 to FIG. 6 , FIG. 8 and FIG. 9 , the invention relates to a connection transformer comprising an electronic circuit structure instead of a magnetic core coil, which comprises a coupling module 1 , a filter module 2 and a protection module 3 ; The coupling module 1 is configured for bidirectionally coupling and isolating a DC signal to a high speed network signal; the coupling module 1 is capacitively coupled, and the coupling module 1 is provided with four sets of capacitive coupling units. Each of the capacitive coupling units is provided with a set of capacitors 11; the filter module 2 is configured to filter high-frequency unwanted signals in the network signal; and the filter module 2 is a Bessel-type band-stop filter; The Bessel type band stop filter comprises an inductance component and a capacitor; the protection module 3 is configured for discharging abnormal high voltage and large current, protecting secondary electronic components and circuits; The protection module 3 is provided with a bleeder circuit composed of semiconductor elements, and the bleeder circuit comprises two sets of integrated circuit (IC) units; the protection module 3 is provided with a board-level tip discharge circuit on the circuit board.

The topology setting of the connection transformer is consistent with the traditional connection transformer topology. The pin function and position of the connection transformer are consistent with the traditional transformer, and can quickly replace the related equipment; the connection transformer The assembly method is a dual in-line (DIP) mode, and the three functional modules connected to the transformer are packaged in a transformer housing having a plurality of pins.

Example 2

Referring to FIG. 2 to FIG. 9 , the present invention is a connection transformer that uses an electronic circuit structure instead of a magnetic core coil, and includes a coupling module 1 , a filter module 2 , and a protection module 3 ; The two-way coupling of the high-speed network signal and the isolation of the DC signal; the coupling module 1 adopts a capacitive coupling manner, and the coupling module is provided with four sets of capacitive coupling units, and the capacitive coupling units are respectively provided with one The filter module 2 is configured to filter a high frequency unwanted signal in the network signal; the filter module 2 adopts a Bessel type signal line (Trace) filter structure; The Bessel type trace structure uses a circuit structure on a printed circuit board (PCB) to implement the function of a Bessel type band stop filter, the Bessel type. The signal filtering structure is provided with a whirling trace 21 for implementing an inductive component function, and the Bessel-type signal line (Trace) filter structure is on the upper and lower layers 22 of the printed circuit board (PCB). The copper foil 23 is disposed on the layer to realize the capacitor function; The protection module 3 is configured to bleed and protect the secondary electronic components and circuits from abnormal high voltages and large currents; the protection module 3 is provided with a bleeder circuit composed of semiconductor components, and the bleeder circuit The system includes two sets of integrated circuit (IC) units; the protection module 3 is provided with a board-level tip discharge circuit on the circuit board.

The topology of the connection transformer can be set to be consistent with the traditional type of connection transformer topology, the pin function and position of the connection transformer are consistent with the traditional transformer, and can quickly replace the related equipment; the connection transformer The assembly method is a surface mount soldering (SMT) method, and the three functional modules connected to the transformer are collectively disposed on a printed circuit board (PCB).

The present invention has been described in detail above, and the foregoing is only a preferred embodiment of the present invention, and the scope of the present invention is not limited, and all changes and modifications according to the scope of the present application should still be The scope of the invention is covered.

Claims (4)

A connection transformer using an electronic circuit structure instead of a magnetic core coil, characterized in that it comprises a coupling module, a filter module and a protection module; the coupling module is used for bidirectional coupling and isolation of high speed network signals a DC signal; the coupling module adopts a capacitive coupling manner, the coupling module is provided with a plurality of sets of capacitive coupling units, and the capacitive coupling units are each provided with a set of capacitors; the filter module is used for filtering the network a high frequency unwanted signal in the signal; the filter module uses a Bessel type band stop filter and/or a Bessel type signal line (Trace) filter structure; the Bessel ( The Bessel type band stop filter comprises an inductive component and a capacitor; the Bessel-type signal filtering structure uses a circuit structure on a printed circuit board (PCB) to implement Bessel (Bessel). The function of the band stop filter, the Bessel type signal filtering structure is provided with a whirling trace to realize the function of the inductance element, and the Bessel type signal line (Trace) Filter structure on printed circuit board (PCB) Upper and lower level stack configuration providing a copper layer or foil capacitors implemented functions. A connection transformer comprising an electronic circuit structure in place of a magnetic core coil according to claim 1, wherein the protection module is configured to discharge abnormal high voltage and large current and protect the secondary. An electronic component and a circuit; the protection module is provided with a bleeder circuit composed of a semiconductor component, the bleeder circuit comprises a plurality of integrated circuit (IC) units; and the protection module is provided with a board level on the circuit board Tip discharge circuit. A connecting 埠 transformer using an electronic circuit structure instead of a magnetic core coil according to claim 1, wherein the topology of the connecting 埠 transformer can be set to be consistent with a conventional type 埠 transformer topology, or with a conventional type. The connection transformer topology is inconsistent. When the topology of the connection transformer is consistent with the traditional connection and transformer topology, the pin function and position of the connection transformer are the same as those of the conventional transformer, which can realize a quick replacement on the related equipment. . A connection transformer comprising an electronic circuit structure in place of a magnetic core coil according to claim 1, wherein the connection transformer is assembled in a double in-line (DIP) manner or surface mount welding ( SMT) mode, when it is a dual in-line (DIP) mode, the three functional modules connected to the transformer are packaged separately or in combination in a transformer housing with multiple pins; when surface soldering (SMT) In the mode, the three functional modules connected to the transformer are collectively disposed on a printed circuit board (PCB).