CN112133519A

CN112133519A - Audio transformer

Info

Publication number: CN112133519A
Application number: CN202011027853.6A
Authority: CN
Inventors: 汪兆滨
Original assignee: Jiangxi Bozhiyun Electronic Technology Co ltd
Current assignee: Jiangxi Bozhiyun Electronic Technology Co ltd
Priority date: 2020-09-26
Filing date: 2020-09-26
Publication date: 2020-12-25
Anticipated expiration: 2040-09-26
Also published as: CN112133519B

Abstract

The invention relates to the technical field of audio transformers and discloses an audio transformer which comprises a U-shaped plate, wherein sliding grooves are formed in the left side and the right side of the inner part of the U-shaped plate, the inner sides of the two sliding grooves are connected with uniformly distributed limiting strips in a sliding mode, uniformly distributed iron cores are arranged on the inner sides of the U-shaped plate, two ends of each iron core are fixedly connected with the limiting strips, and copper wires are wound on the iron cores. According to the invention, the primary coil is divided into several average sections, the secondary coils consisting of copper wires, iron cores and limiting strips are divided into a plurality of groups and embedded into the primary coil, the high-frequency skin effect (the higher the frequency is, the more the current is concentrated on the surface) of an electronic circuit is utilized to increase the surface transmission capability of high frequency and increase the coupling capability of an output coil, and after output, a plurality of groups of parallel connection modes are adopted to increase the number of winding turns at the input end of a transformer and increase the inductance value at the input end, so that the output extension range of low frequency is improved.

Description

Audio transformer

Technical Field

The invention relates to the technical field of audio transformers, in particular to an audio transformer.

Background

The sound system is a video and audio device for restoring the scene, in the existing sound system, the power amplifier is the most important link in the whole set of system, provides power output for the whole set of system, drives the loudspeaker to make wonderful sound, the existing power amplifiers in the market are roughly divided into two categories, including transistor power amplifier and electron tube power amplifier. Wherein the sound of the power amplifier belonging to the electron tube is the most beautiful and vivid,

inside the electronic tube power amplifier equipment, can use electronic tube (vacuum tube) as power amplification output, in the circuit, electronic tube (vacuum tube) is high impedance electron device, can not direct drive loudspeaker audio amplifier, need add a transformer as impedance match and link up, for high impedance conversion low impedance effect, work in the frequency range (20Hz to 30KHz wide band) that people's ear can listen simultaneously, traditional electronic transformer all is under the state of working at 50Hz or 60Hz (single frequency), can not satisfy this circuit technical requirement, and the specification is fixed, inconvenient regulation, the practicality is relatively poor, so an audio transformer has been proposed to solve above-mentioned problem.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the audio transformer which has the advantages of improving the output extension range of low frequency, being convenient to adjust and the like, and solves the problems that the traditional electronic transformer cannot meet the technical requirements of the circuit, is fixed in specification, inconvenient to adjust and poor in practicability when working in a 50Hz or 60Hz (single frequency) state.

(II) technical scheme

In order to achieve the purposes of improving the low-frequency output extension range and facilitating adjustment, the invention provides the following technical scheme: an audio transformer comprises a U-shaped plate, wherein the left side and the right side of the inside of the U-shaped plate are both provided with sliding grooves, the inner sides of the two sliding grooves are both connected with uniformly distributed limiting strips in a sliding manner, the inner side of the U-shaped plate is provided with iron cores which are uniformly distributed, both ends of each iron core are fixedly connected with the limiting strips, copper wires are wound on the iron core, strip-shaped through grooves are formed in the left side and the right side of the U-shaped plate, one sides, opposite to the two strip-shaped through grooves, are respectively communicated with the two sliding grooves, threaded rods penetrate through the insides of the two strip-shaped through grooves, one ends, opposite to the threaded rods, extend into the insides of the two sliding grooves and are in threaded connection with the two limiting strips at the top, the copper wires are electrically connected in parallel, the U-shaped plate comprises two L-shaped rods, and the bottom between the two L-shaped rods is connected with a connecting rod in a sliding mode.

Preferably, the width of the strip-shaped through groove is smaller than that of the sliding groove, and the width of the strip-shaped through groove is larger than the diameter of the copper wire.

Preferably, both ends of the limiting strip are provided with grooves, and both ends of the copper wire are located on the inner sides of the grooves.

Preferably, the winding directions of the copper wires are the same, and the adjacent copper wires are in contact with each other.

Preferably, the strip-shaped through grooves are all provided with threaded holes, and one ends of the two threaded rods, which are opposite to each other, are respectively in threaded connection with the two threaded holes at the top.

(III) advantageous effects

Compared with the prior art, the invention provides an audio transformer, which has the following beneficial effects:

1. the audio transformer adopts a primary coil divided into several average sections, secondary coils consisting of copper wires, iron cores and limiting bars are divided into a plurality of groups and embedded into the primary coils, the high-frequency skin effect (the higher the frequency is, the more the current is concentrated on the surface) of an electronic circuit is utilized to increase the surface transmission capability of high frequency and increase the coupling capability of an output coil, a plurality of groups of parallel connection modes are adopted after output to increase the winding turns at the input end of the transformer and increase the inductance at the input end to improve the output extension range of low frequency, meanwhile, the length of the iron core arranged on the inner side of a U-shaped plate can be adjusted according to the use requirement so as to change the turns and the length of the wound copper wires, then the limiting bars at the two ends of the iron core are divided into a sliding chute and fixed through a threaded rod so as to fix the positions of the U-shaped plate and the iron core and limit, the use requirement of the root type user can be adjusted conveniently, the application range is wider, and the practicability is strong.

2. According to the audio transformer, the width of the strip-shaped through groove is smaller than that of the sliding groove, so that the limiting strip can be limited in the sliding groove and cannot enter the strip-shaped through groove, and meanwhile, the width of the strip-shaped through groove can facilitate the input end and the output end of a copper wire to penetrate through.

3. This audio transformer makes things convenient for the input and the output of copper wire to pass through the recess, can contact between two restriction strips simultaneously, keeps the structural stability of transformer.

4. The audio transformer ensures normal operation of the transformer through the same winding direction of the copper wires.

5. This audio transformer, through the cooperation of screw hole and threaded rod, the person of facilitating the use dismantles the major structure of fixed transformer, and the quantity of threaded rod is not restricted to two simultaneously, can use corresponding the quantity of screw hole.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top cross-sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

fig. 4 is a schematic diagram of the principle of the present invention.

In the figure: 1. a U-shaped plate; 101. an L-shaped rod; 102. a connecting rod; 2. a chute; 3. a restriction strip; 4. an iron core; 5. a copper wire; 6. a strip-shaped through groove; 7. a threaded rod; 8. a groove; 9. a threaded bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an audio transformer comprises a U-shaped plate 1, wherein sliding grooves 2 are formed in the left side and the right side of the inside of the U-shaped plate 1, limiting strips 3 which are uniformly distributed are slidably connected to the inner sides of the two sliding grooves 2, an iron core 4 which is uniformly distributed is arranged on the inner side of the U-shaped plate 1, two ends of the iron core 4 are fixedly connected with the limiting strips 3, copper wires 5 are wound on the iron core 4, through grooves 6 are formed in the left side and the right side of the U-shaped plate 1, one sides of the two strip-shaped through grooves 6 which are opposite are respectively communicated with the two sliding grooves 2, threaded rods 7 are inserted into the two strip-shaped through grooves 6, one ends of the two threaded rods 7 which are opposite are respectively extended into the two sliding grooves 2 and are in threaded connection with the two limiting strips 3 at the top, the copper wires 5 are electrically connected in parallel, the U-shaped plate 1 is composed of two L, by adopting a structure that a primary coil is divided into several average sections, secondary coils consisting of copper wires 5, iron cores 4 and limiting strips 3 are divided into a plurality of groups and embedded into the primary coil, the higher the high-frequency skin effect frequency of an electronic circuit is, the more the current is concentrated on the surface, the higher the surface transmission capability of the high-frequency is, the coupling capability of the output coil is increased, after the output, a plurality of groups of parallel connection modes are adopted, the number of turns of windings at the input end of a transformer is increased, the inductance of the input end is increased, the output extension range of low frequency is improved, meanwhile, the length of the iron core 4 arranged on the inner side of a U-shaped plate 1 can be adjusted according to the use requirement, the number of turns and the length of the wound copper wires 5 are changed, then the limiting strips 3 at the two ends of the iron core 4 are scribed into a sliding chute 2 and are fixed by a threaded rod 7, the positions of, the use requirement of the root type user can be adjusted conveniently, the application range is wider, and the practicability is strong.

Furthermore, the width of the strip-shaped through groove 6 is smaller than the sliding groove 2, the width of the strip-shaped through groove 6 is larger than the diameter of the copper wire 5, and the width of the strip-shaped through groove 6 is smaller than the sliding groove 2, so that the limiting strip 3 can be limited in the sliding groove 2 and cannot enter the strip-shaped through groove 6, and meanwhile, the width of the strip-shaped through groove 6 can facilitate the input end and the output end of the copper wire 5 to pass through.

Further, recess 8 has all been seted up at the both ends of restriction strip 3, and the both ends of copper wire 5 are located the inboard of recess 8, make things convenient for the input and the output of copper wire 5 to pass through recess 8, can contact between two restriction strips 3 simultaneously, keep the structural stability of transformer.

Furthermore, the winding directions of the copper wires 5 are the same, the adjacent copper wires 5 are in contact with each other, and the normal operation of the transformer is ensured through the same winding direction of the copper wires 5.

Furthermore, threaded holes 9 are formed in the strip-shaped through grooves 6, one ends, opposite to the threaded rods 7, of the threaded rods are in threaded connection with the threaded holes 9 in the top portion respectively, through the matching of the threaded holes 9 and the threaded rods 7, a user can conveniently detach the main structure of the fixed transformer, the number of the threaded rods 7 is not limited to two, and the number of the threaded rods 9 can be used correspondingly.

The working principle is as follows: by adopting a structure that a primary coil is divided into several average sections, secondary coils consisting of copper wires 5, iron cores 4 and limiting strips 3 are divided into a plurality of groups and embedded into the primary coil, the higher the high-frequency skin effect frequency of an electronic circuit is, the more the current is concentrated on the surface, the higher the surface transmission capability of the high-frequency is, the coupling capability of the output coil is increased, after the output, a plurality of groups of parallel connection modes are adopted, the number of turns of windings at the input end of a transformer is increased, the inductance of the input end is increased, the output extension range of low frequency is improved, meanwhile, the length of the iron core 4 arranged on the inner side of a U-shaped plate 1 can be adjusted according to the use requirement, the number of turns and the length of the wound copper wires 5 are changed, then the limiting strips 3 at the two ends of the iron core 4 are scribed into a sliding chute 2 and are fixed by a threaded rod 7, the positions of, the use requirement of the root type user can be adjusted conveniently, the application range is wider, and the practicability is strong.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An audio transformer, includes U type board (1), its characterized in that: the iron core structure is characterized in that sliding grooves (2) are formed in the left side and the right side of the inside of the U-shaped plate (1), the inner sides of the two sliding grooves (2) are connected with uniformly distributed limiting strips (3) in a sliding mode, iron cores (4) are uniformly distributed on the inner side of the U-shaped plate (1), two ends of each iron core (4) are fixedly connected with the limiting strips (3), copper wires (5) are connected to the iron cores (4) in a winding mode, strip-shaped through grooves (6) are formed in the left side and the right side of the U-shaped plate (1), one opposite sides of the two strip-shaped through grooves (6) are respectively communicated with the two sliding grooves (2), threaded rods (7) are inserted into the two strip-shaped through grooves (6), one opposite ends of the two threaded rods (7) respectively extend into the two sliding grooves (2) and are in threaded connection with the two limiting strips (3) at the top, and the copper wires (, the U-shaped plate (1) is composed of two L-shaped rods (101), and a connecting rod (102) is connected to the bottom between the two L-shaped rods (101) in a sliding mode.

2. The audio transformer according to claim 1, wherein: the width of the strip-shaped through groove (6) is smaller than that of the sliding groove (2), and the width of the strip-shaped through groove (6) is larger than the diameter of the copper wire (5).

3. The audio transformer according to claim 1, wherein: both ends of the limiting strip (3) are provided with grooves (8), and both ends of the copper wire (5) are located on the inner sides of the grooves (8).

4. The audio transformer according to claim 1, wherein: the winding directions of the copper wires (5) are the same, and the adjacent copper wires (5) are in contact with each other.

5. The audio transformer according to claim 1, wherein: threaded holes (9) are formed in the strip-shaped through grooves (6), and one ends, opposite to the threaded rods (7), are in threaded connection with the two threaded holes (9) in the top respectively.