CN218447482U

CN218447482U - Single-ended output transformer of electronic tube power amplifier

Info

Publication number: CN218447482U
Application number: CN202222399818.8U
Authority: CN
Inventors: 利小聪
Original assignee: Huizhou Fugu Sound Co ltd
Current assignee: Huizhou Fugu Sound Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-02-03
Anticipated expiration: 2032-09-09

Abstract

The single-ended output transformer of the electronic tube power amplifier comprises an EE type silicon steel sheet group and an enameled coil. The EE type silicon steel sheet group is formed by stacking a plurality of EE type silicon steel sheets. The EE type silicon steel sheet is formed by butting the opening edges of two opposite E type silicon steel sheets. By using the EE type silicon steel sheet, half of the layers of the coil can be reduced under the same number of turns, the primary and secondary distances are shorter, the coupling degree is improved, the efficiency is higher, and the bandwidth is wider. The EE structure can also increase 100 percent of winding space and 80 percent of power without increasing the plane space, and the air gaps of the single-ended transformer are symmetrically separated at the inner side of the iron core group piece, thereby minimizing the edge magnetic flux noise, improving the integral conversion efficiency and finally improving the output power of the single-ended power amplifier of the electronic tube.

Description

Single-ended output transformer of electronic tube power amplifier

Technical Field

The utility model relates to a transformer field specifically is a single-ended output transformer of electron tube power amplifier.

Background

The transformer consists of an iron core and a coil, wherein the coil is provided with two or more than two windings, the winding connected with a power supply is called a primary coil, and the other windings are called secondary coils. The core acts to enhance the magnetic coupling between the two coils. To reduce eddy current and hysteresis losses in the iron, the core is made of a stack of multiple sheets of silicon steel.

In the prior art, the structure of the single-ended output transformer of the electron tube power amplifier is formed by stacking a plurality of E-type silicon steel sheets and a plurality of I-type silicon steel sheets, and the E-type silicon steel sheets and the I-type silicon steel sheets and the primary and secondary sides of an enameled coil form the single-ended output transformer of the electron tube power amplifier. The traditional electronic tube power amplifier single-ended output transformer has the problems of small winding space, low power space and high edge magnetic flux noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a electron tube power amplifier single-ended output transformer who constitutes by EE type blade group and the winding of enamelled coil primary level.

The purpose of the utility model is realized through the following technical scheme:

the single-ended output transformer of the electronic tube power amplifier comprises an EE type silicon steel sheet group and an enameled coil.

The EE type silicon steel sheet group is formed by stacking a plurality of EE type silicon steel sheets.

The EE type silicon steel sheet is formed by butting the opening edges of two opposite E type silicon steel sheets.

The primary and secondary enameled coils are composed of enameled wires wound with EE type silicon steel sheet groups.

The utility model discloses beneficial effect:

the utility model discloses owing to adopted above-mentioned technical scheme, space utilization is high, and under the condition that does not increase the plane space, EE structure edge magnetic flux noise is littleer, can increase 100% wire winding space, increases 80% power to under equal winding number of turns, reduce half the number of piles, make primary level distance shorter, the coincidence is inseparabler, and efficiency is higher, and the frequency width is wider.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 view showing the composition of E-type and I-type silicon steel sheets in the prior art.

FIG. 2 is a schematic diagram of a prior art coil wound on an E-type silicon steel sheet and an I-type silicon steel sheet.

Fig. 3 is a front view of the present invention.

FIG. 4 is a schematic view of an E-type silicon steel sheet.

FIG. 5 is a schematic view of EE type silicon steel sheet.

FIG. 6 is a schematic view of an EE-type silicon steel sheet set.

The reference numbers in the figures represent: e type silicon steel sheet 1, EE type silicon steel sheet 2, EE type silicon steel sheet group 3, primary and secondary enameled coil 4, I type silicon steel sheet 5, opening edge 6, coil 7.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are illustrated in the accompanying drawings. The 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 invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 and 2 are schematic diagrams of the prior art. The structure of the single-ended output transformer of the electron tube power amplifier is formed by stacking a plurality of E-shaped silicon steel sheets 1 and a plurality of I-shaped silicon steel sheets 5.

The utility model discloses please refer to fig. 3-6: a single-ended output transformer of a tube power amplifier comprises a silicon steel sheet set and a primary and secondary enameled coil, wherein the silicon steel sheet set is an EE-type silicon steel sheet set 3. The EE type silicon steel sheet group 3 is composed of a plurality of EE type silicon steel sheets 2 which are stacked.

By adopting the technical scheme, the EE structure is used, the air gap of the single-end transformer can be symmetrically separated from the inner side of the iron core sheet, the edge magnetic flux noise can be minimized and can influence the overall conversion efficiency, and the iron core is saturated too early, so that the EE structure can improve the overall conversion efficiency and finally improve the single-end power amplifier output power of the electronic tube.

Referring to fig. 5 and 6, the EE type silicon steel sheet 2 is formed by butting two opposite open edges 6 of an E type silicon steel sheet 1.

By adopting the technical scheme, the two opposite E-shaped silicon steel sheets 1 are used, so that the winding space can be increased without increasing the plane space, and the power is improved.

The primary and secondary enameled coils 4 are composed of an enameled wire wound EE type silicon steel sheet group 3.

Through adopting above-mentioned technical scheme, can let the coil reduce half number of piles under equal number of turns, make primary and secondary distance shorter, improve the degree of coupling, let efficiency higher, the frequency width is wider.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a single-ended output transformer of electron tube power amplifier, includes silicon steel sheet group, primary and secondary enameled coil, its characterized in that: the silicon steel sheet set is an EE type silicon steel sheet set (3), the EE type silicon steel sheet set (3) is formed by stacking a plurality of EE type silicon steel sheets (2), the EE type silicon steel sheets (2) are formed by butting opening edges (6) of two opposite E type silicon steel sheets (1), and the primary and secondary enameled coils (4) are formed by winding the EE type silicon steel sheet set (3) by enameled wires.