TWM603648U - Cable television apparatus with high saturation current transformer - Google Patents

Abstract

A cable TV device with a high saturation current transformer is applied to an input coaxial cable and an output coaxial cable to transmit a cable TV signal and an AC power source. The cable TV device with a high saturation current transformer includes a high saturation current transformer , An input terminal, an output terminal and a coupling end; the high saturation current transformer includes an iron core, a primary side circuit and a secondary side coil; the iron core is a high saturation current iron core, so that the primary side circuit Transmit the cable TV signal and the AC power source, and couple the cable TV signal to the secondary side coil.

Description

Cable television device with high saturation current transformer

This creation is related to a cable TV device, especially a cable TV device with a high saturation current transformer.

At present, cable television (cable television) systems are very common; cable television systems transmit television programs and network signals to clients through coaxial cables.

Cable TV systems need to use chokes to transmit AC power; chokes usually require winding, and the length of the winding is long, so the choke is prone to parasitic capacitance and parasitic inductance, and it is easy to produce traps at high frequencies. Waves make high-frequency characteristics poor, especially in the frequency band above 1.5GHz.

Furthermore, the use of chokes in the cable TV system will also increase the cost of the cable TV system.

In order to solve the above problems, the purpose of this creation is to provide a cable television device with a high saturation current transformer.

In order to achieve the above-mentioned purpose of cost creation, the cable TV device with high saturation current transformer of this creation is applied to an input coaxial cable and an output coaxial cable to transmit a cable TV signal and an AC power supply. The high saturation current transformer The cable television device includes: a high saturation current transformer, the high saturation current transformer is electrically connected to the input coaxial cable and the output coaxial cable; an input terminal, the input terminal is electrically connected to the high saturation current transformer and the Input coaxial cable; an output terminal, the output terminal is electrically connected to the high saturation current transformer and the output coaxial cable; and a coupling end, the coupling end is electrically connected to the high saturation current transformer, wherein the high saturation The current transformer includes: an iron core; a primary side circuit, one end of the primary side circuit is electrically connected to the input coaxial cable and the input terminal, and the other end of the primary side circuit is electrically connected to the output coaxial cable and The output terminal; and a secondary side coil, the secondary side coil is wound around the iron core, one end of the secondary side coil is electrically connected to the ground, and the other end of the secondary side coil is electrically connected to the coupling end , Wherein the iron core is a high saturation current iron core, so that the primary side line transmits the cable TV signal and the AC power source, and couples the cable TV signal to the secondary side coil.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, one of the primary side lines can carry current, for example, but the present invention is not limited to greater than or equal to ten amperes. ; When the loadable current of the primary side circuit is greater than or equal to ten amperes, the iron core is still not saturated.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer created by this invention as described above, the iron core defines a gap to achieve the high saturation current iron core.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer created by the present invention as described above, the iron core defines a central through hole; the primary side line is one of the through the central through hole Conductive straight line.

Furthermore, in one of the specific embodiments of the cable television device with the high saturation current transformer of the present creation as described above, the cable television device with the high saturation current transformer of the present creation further includes: a coupling terminal transformer, the coupling terminal The transformer is electrically connected to the secondary side coil and the coupling end, and the coupling end transformer is electrically connected to the input terminal or the output terminal.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present creation as described above, the cable television device with a high saturation current transformer of the present creation further includes: a first resistor, the first One end of the resistor is electrically connected to the ground, and the other end of the first resistor is electrically connected to the secondary side coil and the coupling end transformer.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, the cable television device with a high saturation current transformer of the present invention further includes: a second resistor, the second resistor A resistor is electrically connected to the first resistor, the secondary side coil, and the coupling terminal transformer; a third resistor, which is electrically connected to the input terminal or the output terminal; and a capacitor, the capacitor It is electrically connected to the third resistor and the coupling terminal transformer.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, the cable television device with a high saturation current transformer of the present invention further includes: a distribution circuit, the distribution circuit being It is electrically connected to the coupling end.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, the cable television device with a high saturation current transformer of the present invention further includes: a capacitor, the capacitor being electrical Connect to the output terminal and the coupling end transformer.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the invention described above, the number of turns of one of the secondary side coils may be, for example, but the invention is not limited to five or six.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, a diameter of the conductive line may be, for example, but the present invention is not limited to at least 0.8 mm.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, the iron core may be, for example, but the present invention is not limited to being made of manganese zinc.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, the cable television device with a high saturation current transformer of the present invention further includes: a printed circuit board, wherein the primary The side circuit is arranged on one side of the printed circuit board.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer created by this invention as described above, the printed circuit board defines a containing through hole; the iron core passes through the containing through hole and Set in the containing through hole.

Furthermore, in one of the specific embodiments of the cable television device with the high saturation current transformer of the present creation as described above, the cable television device with the high saturation current transformer of the present creation further includes: a metal lower cover, the metal under The cover is arranged on the other side of the printed circuit board, and the metal lower cover covers the iron core.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present invention as described above, the cable television device with a high saturation current transformer of the present invention further includes: a metal upper cover, the metal upper cover being It is arranged on one side of the printed circuit board, and the metal upper cover covers the iron core.

Furthermore, in one of the specific embodiments of the cable television device with the high saturation current transformer of the present invention as described above, the cable television device with the high saturation current transformer of the present invention further includes: an isolator, which surrounds A part of the primary side circuit avoids short-circuiting with the secondary side coil.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer created by the present invention as described above, the conductive straight line is a part of the input terminal or a part of the output terminal.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer of the present creation as described above, the cable television device with a high saturation current transformer of the present creation further includes: a metal cover surrounding the metal cover The high saturation current transformer.

Furthermore, in a specific embodiment of the cable television device with a high saturation current transformer created by the present invention as described above, the metal cover is a part of the input terminal or a part of the output terminal.

Since this creation does not use a choke to transmit AC power, this creation can greatly improve the high-frequency characteristics of the cable TV signal and reduce the cost of the cable TV system.

In order to have a better understanding of the techniques, methods and effects adopted by this creation to achieve the intended purpose, please refer to the detailed description and drawings of this creation below. I believe that the purpose, features and characteristics of this creation can be obtained in depth and specificity. However, the attached drawings are only provided for reference and explanation, and are not used to limit the creation.

In this disclosure, many specific details are provided to provide a thorough understanding of the specific embodiments of the creation; however, those skilled in the art should know that in the absence of one or more of these specific details, Can practice this creation; in other cases, the well-known details are not shown or described to avoid obscuring the main technical features of this creation. The technical content and detailed description of this creation, together with the schematic description, are as follows:

Please refer to FIG. 1, which is a circuit block diagram of the first embodiment of a cable television device with a high saturation current transformer created. The cable television device 10 with a high saturation current transformer of the present invention is applied to an input coaxial cable 20 and an output coaxial cable 22 to transmit a cable television signal 202 and an AC power source 204; the cable television device with a high saturation current transformer 10 includes a high saturation current transformer 102, an input terminal 104, an output terminal 106, and a coupling terminal 108; the high saturation current transformer 102 includes an iron core 1022, a primary side circuit 1024 and a secondary side coil 1026; These components are electrically connected to each other, and the secondary side coil 1026 is wound around the iron core 1022 (as shown in FIG. 5).

The iron core 1022 is a high saturation current iron core, so that the primary side circuit 1024 transmits the cable TV signal 202 and the AC power source 204, and couples the cable TV signal 202 to the secondary side coil 1026. One of the primary-side circuits 1024 can carry current, for example, but the invention is not limited to greater than or equal to ten amperes; when the primary-side circuit 1024 can carry current greater than or equal to ten amperes, the iron core 1022 is still not saturated .

Please refer to FIG. 5, which is a schematic diagram of a specific embodiment of the high saturation current transformer created; the components shown in FIG. 5 are the same as those shown in FIG. 1, which are brevity factors, so the description will not be repeated here. . The iron core 1022 defines a gap 1030 to achieve the high saturation current iron core, but the invention is not limited to this; that is, the high saturation current iron core can be achieved by any other method. The iron core 1022 defines a central through hole 1028. The primary side circuit 1024 is a conductive straight line passing through the central through hole 1028, but the present invention is not limited to this; that is, the primary side circuit 1024 can also be a primary side coil wound around the iron core 1022. The diameter of one of the conductive straight lines can be, for example, but is not limited to at least 0.8 mm in the present invention. The number of turns of one of the secondary side coils 1026 can be, for example, but the present invention is not limited to five or six. The iron core 1022 may be, for example, but the invention is not limited to being made of manganese zinc.

Please refer to Figure 6, which is a side cross-sectional view of a specific embodiment of a cable TV device with a high saturation current transformer created by this invention; the components shown in Figure 6 are the same as those shown in Figures 1 and 5, which are The element of brevity, so its description is not repeated here. The cable television device 10 with a high saturation current transformer further includes a printed circuit board 122, a metal lower cover 124, a metal upper cover 126, and a spacer 128; the printed circuit board 122 defines a receiving through hole 130.

The iron core 1022 passes through the containing through hole 130 and is disposed in the containing through hole 130; the primary side circuit 1024 is disposed on one side of the printed circuit board 122; the metal lower cover 124 is disposed on the On the other side of the printed circuit board 122, the metal lower cover 124 covers the iron core 1022; the metal upper cover 126 is disposed on one side of the printed circuit board 122, and the metal upper cover 126 covers the iron core 1022; The spacer 128 surrounds a part of the primary side circuit 1024 to avoid short circuit with the secondary side coil 1026. Furthermore, the spacer 128 may be, for example, but the present invention is not limited to a heat shrinkable tube.

Please refer to Figure 2, which is a circuit block diagram of the second embodiment of a cable television device with a high saturation current transformer created for this creation; the components shown in Figure 2 are the same as those shown in the above drawings, which are simple Factors, so the description will not be repeated here. The cable television device 10 with a high saturation current transformer further includes a coupling terminal transformer 110, a first resistor 112, a second resistor 114, a third resistor 116, a capacitor 118 and a distribution circuit 120; the above-mentioned components Electrically connected to each other.

Please refer to FIG. 3, which is a circuit block diagram of the third embodiment of a cable television device with a high saturation current transformer created for this creation; the components shown in FIG. 3 are the same as those shown in the above drawings, which is simple Factors, so the description will not be repeated here. Please refer to FIG. 4, which is a circuit block diagram of the fourth embodiment of a cable television device with a high saturation current transformer created for this creation; the components shown in FIG. 4 are the same as those shown in the above drawings, which is simple Factors, so the description will not be repeated here.

Please refer to FIG. 7, which is a side cross-sectional view of another embodiment of the high saturation current transformer created; the components shown in FIG. 7 are the same as those shown in the above-mentioned drawings, which is a simple factor, so here The description will not be repeated. As shown in FIG. 7, the conductive straight line (that is, the primary side line 1024) is a part of the input terminal 104 (that is, the connector signal transmission pin) or a part of the output terminal 106 (that is, connected Signal transmission pin). The cable television device 10 with a high saturation current transformer further includes a metal cover 132 that surrounds the high saturation current transformer 102. The metal cover 132 is a part of the input terminal 104 (that is, the connector ground metal Housing) or a part of the output terminal 106 (that is, the connector grounded metal housing). Furthermore, the input terminal 104 and the output terminal 106 are connectors and are disposed on one side of the printed circuit board 122, and the high saturation current transformer 102 is disposed in the input terminal 104 or the output terminal 106.

Please refer to FIG. 8, which is a side cross-sectional view of another embodiment of the high saturation current transformer created; the components shown in FIG. 8 are the same as those shown in the above-mentioned drawings, which is a succinct factor, so here The description will not be repeated. As shown in FIG. 8, the conductive straight line (that is, the primary side line 1024) is a part of the input terminal 104 (that is, the connector signal transmission pin) or a part of the output terminal 106 (that is, connected Signal transmission pin). The cable television device 10 with a high saturation current transformer further includes a metal cover 132 that surrounds the high saturation current transformer 102. Furthermore, the input terminal 104 and the output terminal 106 are connectors and are arranged on one side of the printed circuit board 122, and the high saturation current transformer 102 and the metal cover 132 are arranged on the other side of the printed circuit board 122. On one side.

Furthermore, in a specific embodiment of the present invention, the aforementioned input terminal 104 and the output terminal 106 are arranged on one side of the printed circuit board 122 to be connected to a casing (not shown in these In the figure), a casing end input terminal (not shown in these figures) and a casing end output terminal (not shown in these figures). In another specific embodiment of the present invention, the aforementioned input terminal 104 and the output terminal 106 are arranged on the casing to be connected and locked to the input coaxial cable 20 and the output coaxial cable 22 respectively.

Since this creation does not use a choke to transmit AC power, this creation can greatly improve the high-frequency characteristics of the cable TV signal and reduce the cost of the cable TV system.

However, the above are only the preferred embodiments of this creation, and should not limit the scope of implementation of this creation, that is, all equal changes and modifications made in accordance with this creation request shall still fall within the scope of patent coverage of this creation The scope of intention to protect. This creation can also have many other embodiments. Without departing from the spirit and essence of this creation, those skilled in the art can make various corresponding changes and modifications based on this creation, but these corresponding changes and modifications are all Should belong to the scope of protection of the claims attached to this creation. In summary, when it is known that this creation has industrial applicability, novelty and advancement, and the structure of this creation has not been seen in similar products and publicly used, it fully meets the requirements of a new patent application, and the application is filed in accordance with the Patent Law.

10: Cable TV device with high saturation current transformer

20: Input coaxial cable

22: output coaxial cable

102: High saturation current transformer

104: Input terminal

106: output terminal

108: coupling end

110: Coupling end transformer

112: first resistance

114: second resistor

116: third resistor

118: Capacitor

120: Distribution circuit

122: printed circuit board

124: Metal lower cover

126: Metal upper cover

128: spacer

130: contain through hole

132: Metal cover

202: Cable TV signal

204: AC power

1022: iron core

1024: primary side line

1026: Secondary side coil

1028: Center through hole

1030: gap

Figure 1 is a circuit block diagram of the first embodiment of a cable television device with a high saturation current transformer created.

Fig. 2 is a circuit block diagram of the second embodiment of the created cable television device with high saturation current transformer.

Fig. 3 is a circuit block diagram of a third embodiment of a cable television device with a high saturation current transformer created.

Fig. 4 is a circuit block diagram of the fourth embodiment of the created cable television device with high saturation current transformer.

Figure 5 is a schematic diagram of a specific embodiment of the high saturation current transformer created.

Fig. 6 is a side cross-sectional view of a specific embodiment of a cable television device with a high saturation current transformer created.

Figure 7 is a side cross-sectional view of another embodiment of the high saturation current transformer created.

Figure 8 is a cross-sectional side view of another embodiment of the high saturation current transformer created.

10: Cable TV device with high saturation current transformer

20: Input coaxial cable

22: output coaxial cable

102: High saturation current transformer

104: Input terminal

106: output terminal

108: coupling end

202: Cable TV signal

204: AC power

1022: iron core

1024: primary side line

1026: Secondary side coil

Claims (20)

A cable TV device with a high saturation current transformer is applied to an input coaxial cable and an output coaxial cable to transmit a cable TV signal and an AC power source. The cable TV device with a high saturation current transformer includes: A high saturation current transformer, the high saturation current transformer is electrically connected to the input coaxial cable and the output coaxial cable; An input terminal, which is electrically connected to the high saturation current transformer and the input coaxial cable; An output terminal, which is electrically connected to the high saturation current transformer and the output coaxial cable; and A coupling end which is electrically connected to the high saturation current transformer, The high saturation current transformer includes: An iron core A primary side circuit, one end of the primary side circuit is electrically connected to the input coaxial cable and the input terminal, and the other end of the primary side circuit is electrically connected to the output coaxial cable and the output terminal; and A secondary side coil, the secondary side coil is wound around the iron core, one end of the secondary side coil is electrically connected to the ground, and the other end of the secondary side coil is electrically connected to the coupling end, The iron core is a high saturation current iron core, so that the primary side line transmits the cable TV signal and the AC power source, and couples the cable TV signal to the secondary side coil. The cable television device with a high saturation current transformer according to claim 1, wherein one of the primary-side circuits can carry a current greater than or equal to ten amperes; when the carryable current of the primary-side circuit is greater than or equal to ten amperes , The core is still not saturated. The cable television device with a high saturation current transformer according to claim 2, wherein the iron core defines a gap to achieve the high saturation current iron core. The cable television device with a high saturation current transformer according to claim 3, wherein the iron core defines a central through hole; the primary side line is a conductive straight line passing through the central through hole. The cable television device with a high saturation current transformer as described in claim 4 further includes: A coupling end transformer, the coupling end transformer is electrically connected to the secondary side coil and the coupling end, and the coupling end transformer is electrically connected to the input terminal or the output terminal. The cable television device with a high saturation current transformer as described in claim 5, further comprising: A first resistor, one end of the first resistor is electrically connected to the ground, and the other end of the first resistor is electrically connected to the secondary side coil and the coupling end transformer. The cable television device with a high saturation current transformer as described in claim 6, further comprising: A second resistor, the second resistor is electrically connected to the first resistor, the secondary side coil and the coupling terminal transformer; A third resistor, the third resistor is electrically connected to the input terminal or the output terminal; and A capacitor, the capacitor is electrically connected to the third resistor and the coupling terminal transformer. The cable television device with a high saturation current transformer as described in claim 7, further comprising: A distribution circuit, which is electrically connected to the coupling end. The cable television device with a high saturation current transformer as described in claim 6, further comprising: A capacitor, the capacitor is electrically connected to the output terminal and the coupling terminal transformer. The cable television device with a high saturation current transformer according to claim 4, wherein the number of turns of one of the secondary side coils is five or six. The cable television device with a high saturation current transformer according to claim 4, wherein one of the conductive straight lines has a diameter of at least 0.8 mm. The cable television device with a high saturation current transformer according to claim 3, wherein the iron core is made of manganese zinc. The cable television device with a high saturation current transformer as described in claim 4 further includes: A printed circuit board, The primary side circuit is arranged on one side of the printed circuit board. The cable television device with a high saturation current transformer according to claim 13, wherein the printed circuit board defines a containing through hole; the iron core passes through the containing through hole and is disposed in the containing through hole. The cable television device with a high saturation current transformer as described in claim 14, further comprising: A metal lower cover is arranged on the other side of the printed circuit board, and the metal lower cover covers the iron core. The cable television device with a high saturation current transformer as described in claim 15, further comprising: A metal upper cover is arranged on one side of the printed circuit board, and the metal upper cover covers the iron core. The cable television device with a high saturation current transformer as described in claim 4 further includes: An isolating element that surrounds a part of the primary side circuit to avoid short circuit with the secondary side coil. The cable television device with a high saturation current transformer according to claim 4, wherein the conductive straight line is a part of the input terminal or a part of the output terminal. The cable television device with a high saturation current transformer as described in claim 18, further comprising: A metal cover that surrounds the high saturation current transformer. The cable television device with a high saturation current transformer according to claim 19, wherein the metal cover is a part of the input terminal or a part of the output terminal.

Images