JPS5930487Y2 - 3 winding transformer - Google Patents

Description

【考案の詳細な説明】 本考案は３巻線トランスに係り、入力信号が供給される
１次巻線と、入力信号と略同−波形で互いに逆相関係に
ある信号を出力する２次巻線及び３次巻線とを夫々所定
の巻き方をすることにより、従来にくらべて高域の劣化
が少なく、シかも音響機器に適用した場合は音質に優れ
た３巻線トランスを提供することを目的とする。[Detailed Description of the Invention] The present invention relates to a three-winding transformer, including a primary winding to which an input signal is supplied, and a secondary winding to output a signal having approximately the same waveform as the input signal and having an opposite phase relationship with each other. To provide a three-winding transformer that has less deterioration in high frequencies than conventional ones and has excellent sound quality when applied to audio equipment by winding the wire and the tertiary winding in a predetermined manner. With the goal.

従来より人力信号を１次巻線に入力し、互いに逆相関係
にある信号を２次巻線及び３次巻線より夫々出力する３
巻線トランスが、例えば真空管プッシュプルアンプのド
ライブ回路内の位相反転用ドライバトランスとして用い
られることが知られている。Conventionally, a human input signal is input to the primary winding, and signals having an opposite phase relationship to each other are output from the secondary winding and tertiary winding.
It is known that a wire-wound transformer is used, for example, as a phase inversion driver transformer in a drive circuit of a vacuum tube push-pull amplifier.

しかしながら、この従来の３巻線トランスは、１次巻線
、２次巻線及び３次巻線の夫々がすべて同方向に巻回さ
れているため、２次巻線又は３次巻線の高域の周波数特
性が極めて悪く、また２次巻線と３次巻線の周波数特性
が揃っていないという欠点があった。However, in this conventional three-winding transformer, the primary, secondary, and tertiary windings are all wound in the same direction, so the height of the secondary or tertiary winding is The disadvantage was that the frequency characteristics in the region were extremely poor, and the frequency characteristics of the secondary and tertiary windings were not the same.

本考案は上記欠点を除去したものであり、以下図面と共
にその一実施例について説明する。The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

第１図は本考案になる３巻線トランスの一実施例の回路
図、第２図は本考案になる３巻線トランスの巻線の巻き
方向を模式的に示す断面図である。FIG. 1 is a circuit diagram of an embodiment of a three-winding transformer according to the present invention, and FIG. 2 is a sectional view schematically showing the winding direction of the windings of the three-winding transformer according to the present invention.

第１図において、Ｌｌは端子１及び２を有する１次巻線
で、巻線ＬｌａとＬｌｂとが直列に接続されて構成され
ている。In FIG. 1, Ll is a primary winding having terminals 1 and 2, and windings Lla and Llb are connected in series.

Ｌ２は端子３及び４を有する２次巻線、Ｌ３は端子５及
び６を有する３次巻線である。L2 is a secondary winding with terminals 3 and 4, and L3 is a tertiary winding with terminals 5 and 6.

各巻線Ｌｌ、Ｌ２及びＬ３は夫々同一の巻線を使用した
場合は同一の巻数とされている。Each of the windings Ll, L2, and L3 has the same number of turns when the same winding wire is used.

また＋、−は端子１〜６に印加される信号の極性を示す
。Further, + and - indicate the polarities of the signals applied to the terminals 1 to 6.

また第２図において、７は２次巻線Ｌ２と３次巻線Ｌ３
とを区分するためのセパレータ、８は鉄心である。In Fig. 2, 7 is the secondary winding L2 and the tertiary winding L3.
A separator 8 is an iron core.

鉄心８には上記セパレータ７が貫通固定されており、こ
の鉄心８上に２次巻線Ｌ２が矢印ａ方向の巻き方向で巻
回される一方、３次巻線Ｌ３が矢印す方向の巻き方向で
巻回される。The separator 7 is fixed through the iron core 8, and the secondary winding L2 is wound on the iron core 8 in the direction of arrow a, while the tertiary winding L3 is wound in the direction of arrow a. It is wound with.

このように２次巻線Ｌ２と３次巻線Ｌ３とが夫々互いに
逆方向に巻回されている。In this way, the secondary winding L2 and the tertiary winding L3 are wound in opposite directions.

第３図は２次巻線Ｌ２と３次巻線Ｌ３とが夫々互いに逆
方向に鉄心８に巻回されている状態を示す。FIG. 3 shows a state in which the secondary winding L2 and the tertiary winding L3 are wound around the iron core 8 in opposite directions.

なお、第２図及び第３図中、Ｓは巻線の巻き始め位置、
Ｆは巻線の巻終り位置を示す。In addition, in FIG. 2 and FIG. 3, S is the winding start position of the winding,
F indicates the end position of the winding.

上記２次巻線Ｌ２上には第２図中、矢印Ｃ方向に巻線Ｌ
１ａが巻回され、また上記３次巻線Ｌ３上には同図中、
矢印ｄ方向に巻線Ｌ１ｂが巻回されており、これらの巻
線Ｌ １ａ 、 Ｌ １ｂは夫々直列に接続されて前記
１次巻線Ｌ１を構成する。A winding L is placed on the secondary winding L2 in the direction of arrow C in FIG.
1a is wound, and on the tertiary winding L3, in the same figure,
A winding L1b is wound in the direction of arrow d, and these windings L1a and L1b are connected in series to form the primary winding L1.

ここで、Ｌｌａ、Ｌｔｂに分割された１次巻線Ｌ１と２
次巻線Ｌ２及び３次巻線Ｌ３との間の電位差が小なるほ
ど、２次巻線Ｌ２及び３次巻線Ｌ３の出力信号の周波数
特性は高域の劣化が少なくなる。Here, the primary windings L1 and 2 are divided into Lla and Ltb.
As the potential difference between the secondary winding L2 and the tertiary winding L3 becomes smaller, the frequency characteristics of the output signals of the secondary winding L2 and the tertiary winding L3 deteriorate less in high frequencies.

従って、分割された１次巻線Ｌ１は通常は並列に接続さ
れて１次巻線Ｌ１の２次巻線Ｌ２と３次巻線Ｌ３に面し
た方の端子がアース電位等にされる。Therefore, the divided primary windings L1 are usually connected in parallel, and the terminal of the primary winding L1 facing the secondary winding L2 and the tertiary winding L3 is set to a ground potential or the like.

しかし、並列に接続すると、互いのコイルのリーケージ
フラックスなどのため意図しない電圧が発生してそれが
ショートし、鉄心に余計なフラックスが増えて歪が増大
し、音質が劣化する。However, when connected in parallel, unintended voltage is generated due to leakage flux of each coil, which causes a short circuit, which increases unnecessary flux in the iron core, increases distortion, and deteriorates sound quality.

一方、分割された１次巻線Ｌ１を直列に接続した場合は
上記の音質の劣化は殆ど無い。On the other hand, when the divided primary windings L1 are connected in series, there is almost no deterioration in the sound quality described above.

そこで、本実施例では第２図に示す如＜Ｌｔａ。Therefore, in this embodiment, as shown in FIG. 2, <Lta.

Ｌｌｂに分割された１次巻線Ｌ１は直列に接続される。The primary winding L1 divided into Llb is connected in series.

しかしながら、単に直列に接続したのでは１次巻線Ｌ１
対２次巻線Ｌ２の周波数特性と、■次巻線Ｌ１対３次巻
線Ｌ３の周波数特性とが夫々揃わないことがある。However, if the primary winding L1 is simply connected in series,
The frequency characteristics of the secondary winding L2 pair and the frequency characteristics of the secondary winding L1 pair and the tertiary winding L3 may not be the same.

例えば第４図に示す如く巻線Ｌｌａの巻始め位置Ｓを２
次巻線Ｌ２より離間した位置とし、かつ、巻線Ｌｌｂの
巻始めの位置Ｓを３次巻線Ｌ３に面した位置とすると、
端子１に正の電圧を印加する場合は巻線Ｌ２とＬｌａと
の間の電位差の方が、巻線Ｌ３とＬ工、との間の電位差
に比し大となってしまう。For example, as shown in Figure 4, the winding start position S of the winding Lla is set to 2.
Assuming that the position is spaced apart from the next winding L2, and the winding start position S of the winding Llb is a position facing the tertiary winding L3,
When applying a positive voltage to the terminal 1, the potential difference between the windings L2 and Lla is larger than the potential difference between the windings L3 and L.

そこで、本実施例では第５図に示す如く、巻終り位置Ｆ
に端子が接続される巻線Ｌ１ａ及びＬｌｂの各巻始め位
置Ｓを巻線Ｌ２．Ｌ３に面する位置に配設したものであ
る。Therefore, in this embodiment, as shown in FIG.
The winding start positions S of the windings L1a and Llb whose terminals are connected to the windings L2. It is arranged at a position facing L3.

これにより、２次巻線Ｌ２とＬｔａとの間の電位差と、
３次巻線Ｌ３とＬｔｂとの間の電位差が共に等しく、シ
かも低い値となる（但し、Ｌｌａ。As a result, the potential difference between the secondary windings L2 and Lta,
The potential differences between the tertiary windings L3 and Ltb are both equal and have a low value (however, Lla.

Ｌｌｂの巻数は等しく 、Ｌ２． Ｌ３の巻き数も等し
いものとする）。The number of turns of Llb is equal, L2. The number of turns of L3 is also assumed to be the same).

これにより、分割された１次巻線が並列接続された従来
の３巻線トランスに比し音質の劣化は少なく、シかも２
次巻線Ｌ２と巻線ＬｌＢ、３次巻線Ｌ３と巻線Ｌ１ｂと
の間の電位差が等しいことより、両巻線Ｌ２及びＬ３の
各出力信号の周波数特性が等しくなる。As a result, there is less deterioration in sound quality compared to a conventional three-winding transformer in which the divided primary windings are connected in parallel, and it is possible to
Since the potential differences between the secondary winding L2 and the winding LlB and between the tertiary winding L3 and the winding L1b are equal, the frequency characteristics of the output signals of both the windings L2 and L3 are equal.

ここで、２次巻線Ｌ２と３次巻線Ｌ３とを同一方向に巻
回したとすると、２次巻線Ｌ２と３次巻線Ｌ３の一方の
巻線の２つの端子の極性が反転して一次巻線Ｌ１に対し
て分布容量が増えて２次巻線Ｌ２又は３次巻線Ｌ３の出
力信号の周波数特性が第６図に破線で示す如く高域周波
数領域で減衰する。Here, if the secondary winding L2 and the tertiary winding L3 are wound in the same direction, the polarity of the two terminals of one of the secondary winding L2 and the tertiary winding L3 will be reversed. As a result, the distributed capacitance increases with respect to the primary winding L1, and the frequency characteristics of the output signal of the secondary winding L2 or the tertiary winding L3 are attenuated in the high frequency region as shown by the broken line in FIG.

しかしながら、本考案になる３巻線トランスによれば第
２図及び第３図と共に説明したように、上記両巻線Ｌ２
及びＬ３の巻き方向を互いに異ならしめて平衡をとった
ので、上記の極性反転現象は生ぜず、しかも巻線Ｌ１ａ
、Ｌｘｂの間の電位差が小であることから、２次巻線Ｌ
２又は３次巻線Ｌ３の出力信号の周波数特性は第６図に
実線で示す如く上記高周波数領域における減衰度が小と
なり、高域での周波数特性が向上する。However, according to the three-winding transformer of the present invention, as explained in conjunction with FIGS. 2 and 3, both windings L2
Since the winding directions of winding L1a and L3 are made different from each other to achieve balance, the above polarity reversal phenomenon does not occur, and moreover, winding L1a
, Lxb is small, so the secondary winding L
As for the frequency characteristics of the output signal of the secondary or tertiary winding L3, as shown by the solid line in FIG. 6, the degree of attenuation in the high frequency region is small, and the frequency characteristics in the high frequency region are improved.

なお、第６図に示す周波数特性では１次巻線Ｌ１がフラ
ットな周波数帯域を有するものとしである。In the frequency characteristics shown in FIG. 6, it is assumed that the primary winding L1 has a flat frequency band.

かかる本考案になる３巻線トランスは、例えばステレオ
アンプを大出力のモノラルアンプに変換するために使用
して好適である。The three-winding transformer according to the present invention is suitable for use, for example, in converting a stereo amplifier into a high-output monaural amplifier.

すなわち、１次巻線Ｌ１の端子１，２にモノラル信号が
供給されると、２次巻線Ｌ２．Ｌ３より互いに逆相のモ
ノラル信号が高域での周波数特性の劣化が少なく取り出
されてステレオアンプの左チヤンネル入力端子と右チヤ
ンネル入力端子とに夫々印加される。That is, when a monaural signal is supplied to terminals 1 and 2 of the primary winding L1, the secondary windings L2 . Mono signals having mutually opposite phases are extracted from L3 with little deterioration of frequency characteristics in high frequencies and are applied to the left channel input terminal and right channel input terminal of the stereo amplifier, respectively.

ここで、このステレオアンプ０のイ氏出力インピーダン
スの２つのスピーカ出力端子の例えば左チャンネルと右
チャンネルの各正側端子間にスピーカを接続することに
より、このスピーカには通常のモノラルアンプの２倍の
電圧が印加されることとなり、よってスピーカより理論
的には４倍の大出力が得られる。Here, by connecting a speaker between the two positive side terminals of the left channel and right channel of the two speaker output terminals of this stereo amplifier with an output impedance of Therefore, theoretically, an output four times as large as that of the speaker can be obtained.

なお、前記の実施例において、１次巻線Ｌ１は２次巻線
Ｌ２と３次巻線Ｌ３の外側に巻回したが、これとは逆に
１次巻線り、の外側に２次巻線Ｌ２．３次巻線Ｌ３を巻
回してもよい。In the above embodiment, the primary winding L1 was wound outside the secondary winding L2 and the tertiary winding L3, but on the contrary, the secondary winding was wound outside the primary winding. The wire L2 may be wound with the tertiary winding L3.

上述の如く、本考案になる３巻線トランスは、２次巻線
と３次巻線の巻き方向を互いに逆方向とする共に、該２
次巻線及び３次巻線の外側又は内側に、該２次巻線に面
する位置に巻き始め位置を有する第１の巻線と該３次巻
線に面する位置に巻き始め位置を有する第２の巻線とを
夫々互いに略同−の巻回数で巻回し、かつ、該第１及び
第２の巻線の両巻き始め位置を直列接続して上記１次巻
線とするよう構成したため、２次巻線及び３次巻線より
夫々互いに逆相関係にある信号を共に略同−の周波数特
性で出力することができ、また上記１次巻線を直列に接
続したためリーケージフラックスの発生が少なく並列を
接続したものに比し音質を向上でき、また上記電位差が
小なる値で、しかも２次巻線と３次巻線とは互いに逆方
向に巻回されているから、２次巻線、３次巻線の夫々よ
り取り出される信号の周波数特性中の高域特性を従来の
ものに比し向上することができる等の特長を有するもの
である。As mentioned above, the three-winding transformer according to the present invention has the secondary winding and the tertiary winding in opposite directions, and
A first winding having a winding start position facing the secondary winding and a winding start position facing the tertiary winding outside or inside the secondary winding and the tertiary winding. The second winding is wound with substantially the same number of turns as each other, and both the winding start positions of the first and second windings are connected in series to form the primary winding. , the secondary winding and the tertiary winding can output signals that are in an anti-phase relationship with each other with substantially the same frequency characteristics, and since the primary windings are connected in series, leakage flux is prevented from occurring. The sound quality can be improved compared to those connected in parallel, and the potential difference is small, and since the secondary and tertiary windings are wound in opposite directions, the secondary winding , the high-frequency characteristics of the signals extracted from each of the tertiary windings can be improved compared to conventional ones.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案になる３巻線トランスの一実施例を示す
回路図、第２図は本考案になる３巻線トランスの巻線の
巻き方向を模式的に示す断面図、第３図は本考案になる
３巻線トランスの完成途中の一状態を示す外観図、第４
図は１次巻線の直列接続の一例を模式的に示す図、第５
図は本考案になる３巻線トランスの１次巻線の直列接続
の一実施例を模式的に示す図、第６図は本考案になる３
巻線トランスの出力信号の周波数特性と２次巻線と３次
巻線とを同方向に巻回した３巻線トランスの出力信号の
周波数特性とを対比して示す図である。 １〜６・・・・・・端子、７・・・・・・セパレータ、
８・・・・・・鉄心、Ｌｌ・・・・・・１次巻線、Ｌ２
・・・・・・２次巻線、Ｌ３・・・・・・３次巻線。Fig. 1 is a circuit diagram showing an embodiment of the three-winding transformer of the present invention, Fig. 2 is a sectional view schematically showing the winding direction of the three-winding transformer of the present invention, and Fig. 3 4 is an external view showing a state in which the three-winding transformer of the present invention is in the process of being completed.
The figure is a diagram schematically showing an example of series connection of primary windings.
The figure is a diagram schematically showing an example of the series connection of the primary windings of a three-winding transformer according to the present invention, and FIG.
FIG. 3 is a diagram showing a comparison between the frequency characteristics of an output signal of a wire-wound transformer and the frequency characteristics of an output signal of a three-winding transformer in which a secondary winding and a tertiary winding are wound in the same direction. 1 to 6...terminal, 7...separator,
8...Iron core, Ll...Primary winding, L2
...Secondary winding, L3...Third winding.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] １次巻線に供給された入力信号を互いに独立した２次巻
線と３次巻線より互いに逆相関係の信号として夫々出力
する３巻線トランスにおいて、上記２次巻線と３次巻線
の巻き方向を互いに逆方向とする共に、該２次巻線及び
３次巻線の外側又は内側に、該２次巻線に面する位置に
巻き始め位置を有する第１の巻線と該３次巻線に面する
位置に巻き始め位置を有する第２の巻線とを夫々互いに
略同−の巻回数で巻回し、かつ、該第１及び第一２の巻
線の両巻き始め位置を直列接続して上記１次巻線とする
よう構成した３巻線トランス。In a three-winding transformer that outputs an input signal supplied to the primary winding as a signal having an opposite phase relationship from mutually independent secondary and tertiary windings, the secondary winding and the tertiary winding a first winding having winding directions opposite to each other and having a winding start position outside or inside the secondary winding and the tertiary winding at a position facing the secondary winding; A second winding having a winding start position facing the next winding is wound with approximately the same number of turns, and the winding start position of both the first and second windings is A three-winding transformer configured to be connected in series to form the above-mentioned primary winding.